CN100398857C - Retainer for roller bearing - Google Patents
Retainer for roller bearing Download PDFInfo
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- CN100398857C CN100398857C CNB2004800126235A CN200480012623A CN100398857C CN 100398857 C CN100398857 C CN 100398857C CN B2004800126235 A CNB2004800126235 A CN B2004800126235A CN 200480012623 A CN200480012623 A CN 200480012623A CN 100398857 C CN100398857 C CN 100398857C
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- pin
- side plate
- annular side
- retainer
- roller bearing
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Abstract
An end portion of a pin (2) rotatably supporting a rolling body (1) is fitted in a pin-receiving hole (4) formed in an annular side plate (3). The pin-receiving hole (4) has interference in a range from 5 to 40 mum between itself and the outer diameter of the pin (2). The end portion of the pin (2) pressed in the pin-receiving hole (4) with 5 - 40 mum interference is welded to the annular side plate (3).
Description
Technical field
The present invention relates to a kind of roller bearing that is used in, as the retainer in roller bearing or the tapered roller bearing, more particularly, it relates to a kind of retainer that is used in the roller bearing, is called pin formula retainer.
Background technique
In the rolling bearing of the retarder that for example is used in milling train or press, because fluctuation suddenly radially takes place repeatedly in load, cylindrical or conical roller is used as the rolling element that is assemblied between outer bearing back-up ring and the inner bearing back-up ring.Be used to keep the retainer of the rolling element of this rolling bearing (hereinafter being called " roller bearing ") to comprise various types, and those retainers that are called pin formula retainer are to constitute like this, an end that promptly inserts the pin that passes roller (rolling element) center hole is mounted in the pin joint batter, and with annular side plate and pin welding, so that cover the whole end surfaces of pin (it is assembled in the pin joint batter), wherein, described pin joint batter is formed on one of them annular side plate of annular side plate of pair of opposing, roller is arranged on this between the annular side plate simultaneously, and is disclosed as JP60-182525U or JP11-325063A.
Yet, in above-mentioned pin formula retainer, as shown in figure 49, because the aperture of pin joint batter 4 is greater than the outer end diameter of pin 2, so gap g is formed between the pin joint batter 4 and pin in the annular side plate 3.Therefore, when radial load is applied on the pin 2, will produces stress at the weld part 6 of 3 of pin 2 and annular side plate and concentrate, break as slight crack thereby may cause because the stress that welding portion 6 produced is concentrated.
And, in existing pin formula retainer, because being welded into, annular side plate 3 and pin 2 cover the whole end surfaces that is assembled to the pin 2 in the pin joint batter 4, produce slight crack etc. owing to stress is concentrated so that prevent weld part, therefore, the residual-tensile stress that produces at the weld part of 3 of pin 2 and annular side plate will cause intensity to reduce.
In addition, in the pin formula retainer described in the JP11-325063A, mainly move and during with pin contacts towards annular side plate at rolling element, it may contact with the more shallow part of the part that does not have cementation zone or surface hardening layer depth.In addition, on the pin surface that does not form cementation zone, compare with the part that is formed with cementation zone, except wear resistance was low, the mechanical strength of flexural stress was also lower.
Summary of the invention
The purpose of this invention is to provide a kind of retainer that is used in the pin formula roller bearing, it is concentrated by the weld part generation stress that suppresses pin and annular side plate, obtains excellent mechanical intensity.
Retainer according to roller bearing of the present invention comprises a plurality of pins and a pair of annular side plate, wherein, described pin is used for the rotatably rolling element of support rollers bearing, described annular side plate is used for keeping rolling element by means of described a plurality of pins, described rolling element equidistantly is provided with along the circumferencial direction of roller bearing, wherein, the pin joint batter that is used for cooperating with an end of a plurality of pins is formed on a pair of annular side plate, wherein, interference fit between pin and the pin joint batter is 5 μ m or higher, wherein, pin has axial region, this axial region passes the rolling element patchhole that is formed in the rolling element axle center, and the diameter at two ends that is coupled to the pin in the pin joint batter is separately all greater than the diameter of axial region, and the diameter that is coupled to the two ends of the pin in the pin joint batter differs from one another.
At the retainer that is used for roller bearing according to first embodiment, the interference fit between pin and the pin joint batter is preferably 5 μ m or higher and 40 μ m or lower.In addition, the end that preferred pin is coupled in the pin joint batter is soldered on the annular side plate, and described annular side plate has weld part, welds together to be used for will selling on outer side surface with annular side plate, and described weld part is configured as the annular of constant width.In this case, preferably form weld part, weld together will sell with annular side plate by TIG welding or plasma welding.In addition, it is desirable to, the weld part of annular side plate with respect to the elongation of outer side surface in 0.5mm.
In addition, at the retainer that is used for roller bearing according to first embodiment, the end that pin is assembled in the pin joint batter preferably forms by grinding, and in addition, the surface roughness of pin joint batter is preferably 1.2 μ m or lower.In addition, use method of surface finish such as barreling processing (barrel fabrication), honing processing or electropolishing to form the end in the pin joint batter of being coupled to of pin.
In addition, at the retainer that is used for roller bearing according to first embodiment of the invention, the pin joint batter can be formed in a pair of annular side plate.In this case, the diameter of the wherein end in the two ends of pin is preferably little than the other end.
In addition, preferably, pin has axial region, and the diameter at two ends that is coupled to the pin in the pin joint batter is bigger than the diameter of axial region, and wherein, described axial region passes the rolling element patchhole, and described rolling element patchhole is formed on the rolling element axle center.In this case, pin has chamfered part on its top end surface, and chamfered part is preferably 30 degree or lower with respect to the gradient of the external peripheral surface of pin.In this case, chamfered part preferably axially is configured as arc along pin.
In addition, the pin joint batter preferably has chamfered part on the internal surface of annular side plate.In addition, pin has tapering part between axial region and its rear end.In this case, tapering part is preferably 30 degree or lower with respect to the gradient of the external peripheral surface of pin, and the rear end of pin and the border between the axial region axially preferably are chamfered to arc along pin.
In addition, pin has cementation zone on the surface layer of axial region, and the whole length of hypothesis pin is L
1, the axial length between the two end part of pin is L
2, and to be used for along the axial length of the axial formation cementation zone of pin be L
3, preferably it is defined as: L
1＞L
3＞L
1-2L
2In addition, supposing to be used for along the zone of the axial formation cementation zone of pin is L
3, the thickness of annular side plate is T, preferably it is defined as: L
3＞L
1-2L
2＞L
1-2T.
In this case, just can be provided to circumferential surface to pin and carry out RF RF electric current on the used RF load coil when quenching, perhaps control the RF load coil separately and form cementation zone with respect to the relative moving speed of pin for other parts of the two ends of pin or pin by control.
In addition, the retainer that is used for roller bearing according to a second embodiment of the present invention comprises a plurality of pins, a pair of annular side plate and a plurality of axle sleeve, wherein, described pin is used for the rotatably rolling element of support rollers bearing, described annular side plate is used for keeping equidistantly being located at each rolling element on the circumferencial direction of end ring by means of described a plurality of pins, has cone shape hole on each comfortable core of described axle sleeve, this cone shape hole be used for be formed on pin one end on tapering part cooperate, the matching hole that is used for cooperating with axle sleeve is formed at least one annular side plate of a pair of annular side plate, wherein, the interference fit between axle sleeve and the matching hole is 5 μ m or higher.
Retainer according to roller bearing of the present invention, owing to be different from the weld part that forms between pin and the annular side plate under the situation of existing weld part, can guarantee the join strength between pin and the annular side plate, this just can prevent that the weld part of shotpin and annular side plate produces stress and concentrates or slight crack etc. occurs.In addition, this also can prevent mating part generation fretting between pin and pin joint batter etc.
According to the retainer that is used for roller bearing of the present invention, except producing above-mentioned effect, the axial length that can guarantee rolling element is greater than the length under the existing situation.
According to the retainer that is used for roller bearing of the present invention, except producing above-mentioned effect, when the end that will sell is coupled in the pin joint batter of annular side plate, can prevent to produce scraping.
According to the retainer that is used for roller bearing of the present invention,, therefore just can easily assemble retainer because pin can be coupled in the pin joint batter that is formed in the annular side plate from a direction.
According to the retainer that is used for roller bearing of the present invention, except producing above-mentioned effect, when being coupled in the pin joint batter in the annular side plate, can prevent to produce burr in end with pin.
According to the retainer that is used for roller bearing of the present invention, an end that can be suppressed at pin takes place than galling owing to contacting with rolling element, though rolling element in using when annular side plate moves, the mechanical strength of pin flexural strength can be improved.In addition, can suppress to sell mating part between annular side plate and pin owing to fretting is worn and torn, and can prevent heel and toe wear, wherein, this heel and toe wear can cause pin to form the concentrated trigger point of stress.
According to the retainer that is used for roller bearing of the present invention, on the circumferential surface of pin, form the cementation zone of the homogeneous degree of depth, even when the external diameter at the core of pin and two ends is inequality.
According to the retainer that is used for roller bearing of the present invention, owing to be different from the weld part that forms between axle sleeve and the annular side plate under the situation of existing weld part, can guarantee the join strength between axle sleeve and annular side plate, and the weld part generation stress that can suppress axle sleeve and annular side plate is concentrated.
Description of drawings
Fig. 1 is the lateral elevational view that is used for a part of retainer of roller bearing according to the first embodiment of the present invention;
Fig. 2 is along the viewgraph of cross-section shown in the II-II line of Fig. 1;
Fig. 3 is according to a second embodiment of the present invention, and the lateral elevational view of a part of retainer that is used for roller bearing is shown;
Fig. 4 is along the viewgraph of cross-section shown in the IV-IV line of Fig. 3;
Fig. 5 is an a third embodiment in accordance with the invention, is used for the lateral elevational view of a part of retainer of roller bearing;
Fig. 6 is along the viewgraph of cross-section shown in the VI-VI line of Fig. 5;
Fig. 7 is the view of the mating part between pin and the pin joint batter;
Fig. 8 is the planimetric map of the welding portion shown in Fig. 7;
Fig. 9 is illustrated under the situation that the aperture of each pin joint batter equates, the exemplary view of the fitting method of pin, and wherein, described pin joint batter passes a left side and right annular side plate;
Figure 10 is used to explain that a third embodiment in accordance with the invention is used for the function of retainer of roller bearing and the explanatory of effect;
Figure 11 is the segment viewgraph of cross-section of the roller bearing retainer shown in Fig. 5;
Figure 12 is the segment viewgraph of cross-section of the roller bearing retainer of a fourth embodiment in accordance with the invention;
Figure 13 is by using welding wire will sell the view of the welding portion that welds with annular side plate;
Figure 14 is the segment viewgraph of cross-section of roller bearing retainer according to a fifth embodiment of the invention;
Figure 15 is the lateral elevational view of the pin shown in Figure 14;
Figure 16 is the view that the pin top is shown;
Figure 17 is the view that the pin rear end is shown;
Figure 18 is the segment viewgraph of cross-section of annular side plate, and pin is coupled on the side of this annular side plate;
Figure 19 be in assembling shown in Figure 14 under the situation of retainer, be used to explain the view of the cooperation direction of pin;
Figure 20 is the segment viewgraph of cross-section according to the roller bearing retainer of sixth embodiment of the invention;
Figure 21 is the segment viewgraph of cross-section according to the roller bearing retainer of seventh embodiment of the invention;
Figure 22 is the lateral elevational view of pin shown in Figure 21;
Figure 23 is the view that the top of pin is shown;
Figure 24 is the view that the rear end of pin is shown;
Figure 25 is the segment viewgraph of cross-section of annular side plate, and wherein, pin is coupled on the side of this annular side plate;
Figure 26 be in as shown in figure 21 assembling under the situation of retainer, be used to explain the view of the installation direction of pin;
Figure 27 is the view of testing apparatus that is used for the Stromeyer test of pin formula retainer;
Figure 28 is result's the chart that the Stromeyer test of pin formula retainer is shown;
Figure 29 is the chart that is illustrated in the buckling curve of Structural Alloy Steel under the rotation situation;
Figure 30 is the segment viewgraph of cross-section according to the roller bearing of the eighth embodiment of the present invention;
Figure 31 is forming under the situation of RF quench hardened case on the circumferential surface as shown in figure 30, is used to explain the view of its formation method;
Figure 32 is the segment viewgraph of cross-section according to the roller bearing of the ninth embodiment of the present invention;
Figure 33 is applied to the present invention on the embodiment's of roller bearing view;
Figure 34 is the view that the present invention is applied to the embodiment of radial spherical roller bearing;
Figure 35 is the view that the present invention is applied to the embodiment of spherical roller thrust bearing;
Figure 36 is the view that the present invention is applied to the embodiment of cylindrical roller thrust bearing;
Figure 37 is the view that the present invention is applied to the embodiment of tapered roller thrust bearing;
Figure 38 is the segment viewgraph of cross-section according to the roller bearing retainer of the tenth embodiment of the present invention;
Figure 39 is used to explain that pin with retainer is coupled to the view of the step in the pin joint batter of annular side plate;
Figure 40 explains the view of the minor diameter axial region of pin being clogged the step in the little receiving hole that is coupled to annular side plate;
Figure 41 is the segment viewgraph of cross-section of the roller bearing retainer of the 11st embodiment of the present invention;
Figure 42 explains that pin with retainer is coupled to the view of the step in the pin joint batter of annular side plate;
Figure 43 explains that the end face in the pin joint batter that will be coupled to annular side plate forms the view of the step of cone shape hole;
Figure 44 is the segment viewgraph of cross-section according to the roller bearing retainer of the 12nd embodiment of the present invention;
Figure 45 is the segment viewgraph of cross-section according to the 12 embodiment's roller bearing retainer;
Figure 46 is the view of example that is used for the welding gun of soldering pin and annular side plate;
Figure 47 explains to sell the cold interior view of pin joint batter that is coupled to annular side plate;
Figure 48 is the view with the pin joint batter shrinkage fit of the annular side plate method to the pin;
Figure 49 is the view that the example of existing pin formula retainer is shown;
Figure 50 is the view that another example of existing pin formula retainer is shown.
Embodiment
With reference to accompanying drawing embodiments of the invention are described.
According to the first embodiment of the present invention, the retainer that is used for roller bearing comprises a plurality of pins 2 and a pair of annular side plate 3,3, as illustrated in fig. 1 and 2, wherein, described a plurality of pin 2 is used for rotatably a plurality of rolling elements 1 of support cylinder roller bearing, described annular side plate is used for keeping rolling element by means of described pin, and each rolling element 1 equidistantly is provided with along the circumferencial direction of unshowned end ring.
On the other hand, a plurality of pin joint batters 4 pass the annular side plate 3 on the right side that is arranged in Fig. 2, and selling 2 a end relative with screw section 12 is interference fit in each pin joint batter 4, this value of interference fit is about 5 to 40 μ m, wherein, described a plurality of pin joint batter 4 is formed on the circumferencial direction of annular side plate 3 with intended distance.
A pin end that is coupled to pin joint batter 4 of 2 is soldered on the annular side plate 3, and sell 2 and the weld part 13 of annular side plate 3 on the outer side surface of annular side plate 3, form the annular of constant width with pin joint batter 4.
As mentioned above, because the cooperation between pin 2 and the pin joint batter 4 is the interference fit of about 5 μ m to 40 μ m, under the situation that the weld part of pin 2 and annular side plate 3 needn't weld part as shown in figure 49 forms like that, can guarantee the join strength between pin 2 and the annular side plate 3.Therefore since can suppress to sell 2 and the weld part of annular side plate 3 stress occurs and concentrate, this just can prevent from slight crack etc. to occur at the weld part of pin 2 and annular side plate 3.
In addition, owing to being different from weld part shown in Figure 49 (this welding portion covers the whole end face of pin), the weld part in pin 2 and annular side plate 3 forms like that, can prevent to concentrate the slight crack etc. of the welding portion caused, and can prevent because the stress reduction that welding causes by stress.In addition, the TIG welding can be used for soldering pin 2 and annular side plate 3, and this has just reduced residual-tensile stress.Although preferably fetch soldering pin and annular side plate with TIG welding or plasma welding, also can wait and weld by the MAG welding, in the process that this method of employing is welded, can reduce current value, and reduce residual stress by the specific gas flow rate in the control welding process.
Then, with reference to the figure 3 and the 4 narration second embodiment of the present invention.
Shown in Fig. 3 and 4, according to a second embodiment of the present invention, the retainer that is used for rolling bearing comprises a plurality of pins 2, a pair of annular side plate 3 and a plurality of axle sleeve 8, wherein, described pin 2 is used for the rotatably rolling element 1 of support cylinder roller bearing, described annular side plate 3 is used for keeping rolling element 1 by means of described pin, each pin 2 circumferencial directions along unshowned end ring equidistantly are provided with, each comfortable center of described a plurality of axle sleeve has cone shape hole, described cone shape hole is used to cooperate the tapering part 14 towards the top convergent, this tapering part 14 is formed on an end of pin 2, and the annular side plate 3 that is positioned at the right side among Fig. 4 is formed with and is used for a plurality of matching holes 7 of cooperating with a plurality of axle sleeves 8.Matching hole 7 equidistantly is provided with along the circumferencial direction of annular side plate 3 separately, and the cooperation that axle sleeve 8 and matching hole are 7 is 5 μ m or higher and 40 μ m or lower interference fit.The annular side plate 3 that is positioned at Fig. 4 left side is formed with a plurality of tapped holes 5, tapered thread part 12 threaded joint on this tapped hole 5 and the end that is formed on pin 2, and separately with the circumferencial direction setting of intended distance along annular side plate 3.
Axle sleeve 8 is welded on the annular side plate 3, and the weld part 15 of 8 on this annular side plate 3 and axle sleeve forms the annular of weld width constant on the outer side surface of annular side plate 3, and wherein, described annular side plate 3 has matching hole 7.In addition, pin 2 is welded on the axle sleeve 8, and the weld part 16 of 2 of axle sleeve 8 and pins is configured as the annular of weld width constant on the exterior edge face of this axle sleeve 8.
As mentioned above; because the matching hole 7 that is formed in the annular side plate 3 is 5 μ m or more and 40 μ m or lower interference fit with cooperating of 8 on axle sleeve; under the situation that the weld part 15 of annular side plate 3 and 8 formation of axle sleeve needn't weld part as shown in figure 50 forms like that; can guarantee the join strength of 8 on annular side plate 3 and axle sleeve, and the weld part generation stress that can suppress 8 on annular side plate 3 and axle sleeve is concentrated.
In addition, because at the weld part and the axle sleeve 8 of 8 on annular side plate 3 and axle sleeve with sell 2 weld part and needn't form like that by weld part as shown in figure 50, can prevent to concentrate the weld part caused to break etc., and can prevent the stress decrease that caused by welding by stress.In addition, can weld (also can by methods such as plasma welding) by TIG and can form weld part, and this can reduce the tensile residual stresses that is caused by welding at pin 2 and 3 of annular side plate.
Then, with reference to figure 5 to the 10 narration third embodiment of the present invention.
As illustrated in Figures 5 and 6, the retainer that is used for roller bearing of a third embodiment in accordance with the invention comprises a plurality of pins 2, a pair of annular side plate 3,3, wherein, described pin 2 is used for the rotatably rolling element 1 of support cylinder roller bearing, described annular side plate 3 is used for keeping rolling element 1 by means of described pin, and described each rolling element 1 equidistantly is provided with along the circumferencial direction of unshowned end ring.In each annular side plate 3, be formed with a plurality of pin joint batters 4 with penetrating, wherein, described a plurality of pin joint batters 4 respectively be formed on each auxiliary section 17,18 of selling on 2 two ends and carry out interference fit to the magnitude of interference of 40 μ m with 5 μ m.Described a plurality of pin joint batter 4 penetrates formation with intended distance along the circumferencial direction of annular side plate 3 separately, and the surface that is used for each pin joint batter 4 forms by machined into, and roughness is Ra=1.2 μ m or lower.The surface of pin joint batter 4 also can form by similar approach such as grindings with the same procedure of making pin 2 ends.
Then, the external diameter of supposing the auxiliary section 17 of pin on 2 one ends is d
1, the external diameter of selling the auxiliary section 18 on 2 the other ends is d
2, the external diameter of auxiliary section 17,18 is defined as: d
1＜d
2In addition, suppose that pin 2 external diameter is d
3, then the external diameter with auxiliary section 17,18 is defined as: d
3＜d
1＜d
2
In this case, by will sell 2 and the TIG of 3 welding of annular side plate welding or plasma welding method form the weld part 19,20 of 3 of auxiliary section 17,18 and annular side plate, wherein, weld part 19,20 is 0.5mm or lower with respect to the elongation of the outer side surface of annular side plate 3.
As among above-mentioned the 3rd embodiment, because the cooperation that the pin joint batter in auxiliary section 17,18 on pin 2 two ends and the annular side plate 3 is 4 is an interference fit, its magnitude of interference is roughly 5 μ m to 40 μ m, under the situation that the weld part 19,20 of 3 of pin 2 and annular side plate needn't weld part as shown in figure 49 forms like that, can guarantee the join strength of 3 of pin 2 and annular side plate.Thereby, even when the load on sense of rotation (circumferencial direction) is applied on the pin, also can suppress to sell and annular side plate between weld part generation stress concentrate.
In addition, since in the auxiliary section 17,18 and the weld part 19,20 of 3 formation of annular side plate needn't form like that by weld part (this weld part covers the whole end face of pin) as shown in figure 49, can prevent to concentrate breaking of the weld part caused etc., can prevent that also the stress that is caused by welding from reducing by stress.In addition, can use the TIG welding method will sell 2 and annular side plate 3 welding, and this can reduce the tensile residual stresses that is caused by welding.To sell the welding of cyclization shape side plate although preferably adopt TIG welding method or plasma welding method, but also can adopt welding methods such as MAG, in the process that adopts this method welding, current value can reduce, and in welding process, reduce residual stress by the control gas flow rate.
In addition, in the above-described embodiments, by the outside diameter d of definition auxiliary section 17,18
1, d
2For: d
1＜d
2, preferably, d
3＜d
1＜d
2(d
3: the pin external diameter), can easily assemble retainer.That is to say that under the equal situation of the external diameter of auxiliary section 17,18, the assembly direction that auxiliary section 17,18 is coupled to pin joint batter 4 is opposite, as shown in Figure 9.Yet, by outside diameter d with auxiliary section 17,18
1, d
2Be defined as: d
1＜d
2,, as shown in figure 10, then can easily assemble retainer because the assembly direction of auxiliary section 17,18 can be identical.
In addition, in the 3rd embodiment,, when being assembled to auxiliary section 17,18 in the pin joint batter 4, prevented the generation of scraping because the external peripheral surface of auxiliary section 17,18 forms by grinding.In addition, because in the above-described embodiments, the weld part 19,20 that pin 2 and annular side plate are 3 forms by TIG welding method or plasma welding method, and the elongation of weld part 19,20 can be inhibited than usual.And because weld part 19,20 is 0.5mm or lower with respect to the elongation of the outer side surface of annular side plate 3, the axial length that then can guarantee rolling element is than long under the existing situation.
In above-mentioned the 3rd embodiment, although sell 2 end surfaces and the outer side surface of annular side plate is formed on the same level, the end surfaces 2a of pin 2 can be from the outstanding 0.5mm of outer side surface or the littler scope of annular side plate 3, as shown in figure 11.Replacedly, as shown in figure 12, the outer side surface 3a of annular side plate 3 can give prominence to 0.5mm or littler scope with respect to the end surfaces 2a of pin 2.
In addition, in the 3rd embodiment, although can be by under the situation of not using welding rod, directly base material is welded to each other the weld part 19,20 that together can form 3 of pin 2 and annular side plate, also can form the weld part 19,20 of 3 of pin 2 and annular side plate by using welding rod shown in Figure 13.
Then, narrate the fourth embodiment of the present invention referring now to figs. 14 through Figure 19.
As shown in figure 14, the retainer that is used for roller bearing of a fourth embodiment in accordance with the invention comprises a plurality of pins 2 and a pair of annular side plate 3,3, wherein, described pin 2 is used for the rotatably rolling element 1 of support cylinder roller bearing, described annular side plate 3 is used for keeping rolling element 1 by means of described pin, and described rolling element 1 equidistantly is provided with along the circumferencial direction of unshowned end ring.In each annular side plate 3, be formed with a plurality of pin joint batters 4 with penetrating, wherein, described a plurality of pin joint batters 4 respectively be formed on each auxiliary section 17,18 of selling on 2 two ends and cooperate to the magnitude of interference of 40 μ m with 5 μ m.Described a plurality of pin joint batter 4 penetrates formation with intended distance along the circumferencial direction of annular side plate 3 separately, and the surface that is used for each pin joint batter 4 forms by machined into, and roughness is Ra=1.2 μ m or lower.
Then, the external diameter of supposing to be formed on the auxiliary section 17 of pin 2 one ends is d
1, the external diameter that is formed on the auxiliary section 18 of pin 2 the other ends is d
2, the external diameter of auxiliary section 17,18 is defined as: d
1＜d
2In addition, suppose that pin 2 external diameter is d
3, then the external diameter with auxiliary section 17,18 is defined as: d
3＜d
1＜d
2
As shown in figure 15, pin has axial region 2c between auxiliary section 17 and auxiliary section 18.The diameter of axial region 2c is less than the diameter of the rear end (auxiliary section 18) of pin 2, and tapering part 21 (with reference to Figure 17) is formed between the rear end (auxiliary section 18) and axial region 2c of pin 2, with respect to the tilt angle theta of the circumferential surface of pin 2
2It is 30 ° or lower.
The diameter on the top (auxiliary section 17) of pin 2 is greater than the diameter of axial region 2c, and chamfered part 22 (with reference to Figure 16) is formed on the top end surface of pin 2, and it is with respect to the tilt angle theta of the circumferential surface of pin 2
1It is 30 ° or lower.Chamfered part 23 (with reference to Figure 18) is formed in the pin joint batter 4, and wherein, pin 2 top is assembled in it, to reduce and the surface friction drag of 2 of pins.In addition, chamfered part 23 on pin 2 the top end surface and sell border between 2 tops and axially be chamfered to the arc that radius of curvature is R along pin 2, as shown in figure 16, and sell 2 rear end and the border between the tapering part 21 is chamfered to arc, it is R along pin 2 axial radius of curvature.
In above-mentioned the 4th embodiment, because between the pin joint batter 4 in auxiliary section 17,18 on pin 2 two ends and the annular side plate 3 is the interference fit of 5 μ m to the magnitude of interference of 40 μ m, under the situation that the weld part of 3 of pin 2 and annular side plate needn't weld part as shown in figure 49 forms like that, can guarantee the join strength of 3 of pin 2 and annular side plate.Thereby, even when the load on the sense of rotation (circumferencial direction) is applied on the pin, also can suppress to sell and annular side plate between weld part generation stress concentrate.
In addition, in the 4th above-mentioned embodiment, because the outside diameter d of auxiliary section 17,18
1, d
2Be defined as: d
1＜d
2, preferably, d
3＜d
1＜d
2(d
3: the pin external diameter), can easily assemble retainer, as the 3rd embodiment.In addition, because chamfered part 22 (its gradient with respect to the circumferential surface of pin 2 is 30 ° or lower) is positioned on pin 2 top end surfaces, the top of pin 2 can easily be assembled in the pin joint batter 4 of annular side plate 3, and can easily assemble retainer.In addition, because the chamfered part 22 on the top end surface of pin 2 and sell border between 2 the top end surface and axially be chamfered to arc with radius of curvature R along pin 2, when the top that will sell 2 is assembled in the pin joint batter 4 of annular side plate 3, just can prevent the generation of burr etc.
In addition, in the 4th embodiment, because by between the rear end (auxiliary section 18) of pin 2 and axial region 2c, tapering part 21 being set, the rear end of pin 2 can easily be assembled in the pin joint batter 4 of annular side plate 3, and can easily assemble retainer, wherein, this tapering part 21 is 30 ° with respect to the angle of inclination of the circumferential surface of pin 2.In addition, because the rear end and the border between the tapering part 21 of pin 2 axially is chamfered to the arc that radius of curvature is R along pin 2, when being assembled in the pin joint batter 4 of annular side plate 3, can prevent the generation of burr etc. in the rear end that will sell 2.In addition, because the surface roughness of pin joint batter 4 is reduced to 1.2 μ mRa or lower, just can prevent the generation of burr etc. in the time of in the two ends that will sell 2 are assembled to pin joint batter 4.
In above-mentioned the 4th embodiment, although be formed on the outside diameter d of the auxiliary section 17 on pin 2 one ends
1With the outside diameter d that is formed on the auxiliary section 18 on pin 2 the other ends
2Be defined as: d
1＜d
2, sell the outside diameter d of the auxiliary section 17 on 2 one ends
1Outside diameter d with auxiliary section 18 on pin 2 the other ends
2Also can be defined as: d
1＜d
2, as the 5th embodiment shown in Figure 20.Yet the assembly direction of pin 2 is opposite with the assembly direction among the 4th embodiment.
Then, narrate the sixth embodiment of the present invention with reference to Figure 21 to Figure 26.
As shown in figure 21, the retainer that is used for roller bearing according to a sixth embodiment of the invention comprises a plurality of pins 2 and a pair of annular side plate 3,3, wherein, described pin 2 is used for the rotatably rolling element 1 of support cylinder roller bearing, described annular side plate 3 is used for keeping rolling element 1 by means of described pin, and described each rolling element 1 equidistantly is provided with along the circumferencial direction of unshowned end ring.In each annular side plate 3, be formed with a plurality of pin joint batters 4 with penetrating, wherein, described a plurality of pin joint batters 4 respectively be formed on each auxiliary section 17,18 of selling on 2 two ends and cooperate to the magnitude of interference of 40 μ m with 5 μ m.
Then, the external diameter of supposing the auxiliary section 17 of pin on 2 one ends is d
1, the external diameter of selling the auxiliary section 18 on 2 the other ends is d
2, the external diameter of auxiliary section 17,18 is defined as: d
1＜d
2In addition, suppose that pin 2 external diameter is d
3, then the external diameter with auxiliary section 17,18 is defined as: d
3＜d
1＜d
2
Pin joint batter 4 is formed on each annular side plate 3 with intended distance along the circumferencial direction of annular side plate 3 with penetrating, and the surface of each pin joint batter 4 forms by machined into, and roughness is 1.2 μ mRa or lower.
As shown in figure 22, pin 2 has axial region 2c between auxiliary section 17 and auxiliary section 18.The diameter of axial region 2c is less than the diameter of pin 2 rear ends (auxiliary section 18), and tapering part 21 (with reference to Figure 24) is formed between the rear end (auxiliary section 18) and axial region 2c of pin 2, and it is with respect to the tilt angle theta of the circumferential surface of pin 2
2It is 30 ° or lower.
Sell the chamfered part 22 on 2 top end surfaces and sell between 2 tops the border along pin 2 axially be chamfered to the arc that radius of curvature is R, as shown in figure 23.In addition, pin 2 rear end and the border between the tapering part 21 axially are chamfered to the arc that radius of curvature is R along pin 2, as shown in figure 24.Chamfered part 23 (with reference to Figure 25) is formed in the pin joint batter 4, to reduce the surface friction drag with 2 of pins, wherein, sells 2 and is assembled in this pin joint batter 4.
In aforesaid the 6th embodiment, because the outside diameter d of auxiliary section 17,18
1, d
2Be defined as: d
1＜d
2, preferably, d
3＜d
1＜d
2(d
3: the pin external diameter), can easily assemble retainer, as the 3rd to the 6th embodiment.In addition, because by on the end surfaces of pin 2, forming chamfered part 22 (this chamfered part 22 is 30 ° or lower with respect to the angle of inclination of the circumferential surface of pin 2), the top of pin 2 easily can be assembled in the pin joint batter 4 of annular side plate 3, therefore, can easily assemble retainer.In addition, because the chamfered part 22 on the top end surface of pin 2 and sell border between 2 the top and axially be chamfered to arc with radius of curvature R along pin 2, when the top that will sell 2 is assembled in the pin joint batter 4 of annular side plate 3, just can prevent the generation of burr etc.
In addition, in the 6th embodiment, because by between the rear end (auxiliary section 19) of pin 2 and axial region 2c, forming tapering part 21, this tapering part 21 is 30 ° or lower with respect to the angle of inclination of the circumferential surface of pin 2, the rear end of pin 2 can easily be assembled in the tapering part 21 of annular side plate 3, therefore, can easily assemble retainer.In addition and since the rear end of pin 2 and the border between the tapering part 21 along pin 2 axially be chamfered to the arc that radius of curvature is R, in the time of in will selling the 2 pin joint batters 4 that are assembled in the annular side plate 3, just can prevent to produce burr etc.In addition, because the surface roughness of pin joint batter 4 is reduced to 1.2 μ mRa or lower, just can prevent to produce burr etc. in the time of in the two ends that will sell 2 are assembled to pin joint batter 4.
In addition, the surface roughness by the pin joint batter is reduced to 1.2 μ mRa or lower, just can prevent to produce burr etc. when being assembled in the pin joint batter 4 will selling 2.
By adopting the specification sample shown in the table 1, the inventor has carried out the Stromeyer test of pin formula retainer, so that confirm to be used in the effect according to the retainer in the roller bearing of the present invention.Especially, each sample in the table 1 is set to (by the Servo Pulser EH-15 of SimazuSeisakusho manufacturing) in the testing apparatus shown in Figure 27, and carries out the 20Hz bidirectional experimental under predetermined test load (stress).
Table 1
| Comparative example 1 | Comparative example 2 | Example 1 | Example 2 | Example 3 | |
| |
2 grades of pins | Tapered hub | Directly | Directly | Tapered hub |
| The gap | 0.1-0.2mm | 0mm | - | - | |
| Interference | - | 0-5μm | 13-18μm | Driven quantity control | |
| The welding scope | Submerged arc welding in the side plate hole | Submerged arc welding in the side plate hole | Only on circumference | Only on circumference | On two circumference |
Figure 28 illustrates the test result of above-mentioned Stromeyer test.Test result from figure can confirm, compares with comparative example 2 with comparative example 1, and example 1 to 3 of the present invention has been improved fatigue strength, and it is until the fatigue strength of the base material that has reached pin, as shown in figure 29.Because under the situation of magnitude of interference less than the lower limit of 5 μ m of 4 pairs of pins 2 of pin joint batter, the mating part between pin 2 and the pin joint batter 4 is easy to take place fretting etc., the lower limit of interference is set to 5 μ m.In addition, owing to be set to 41 μ m or when higher in the CLV ceiling limit value of the magnitude of interference of 4 pairs of pin joint batters pin 2, need excessive coordinate force and swipe will sell 2 generations when being coupled to pin joint batter 4 in, as shown in table 2, and when 40 μ m or higher magnitude of interference, produce scraping or burr etc., so, the CLV ceiling limit value of interference is arranged to 40 μ m.
Table 2
Surface pressure that cooperates and the example of calculating coordinate force
Average surface pressure:
Coordinate force:
F＝μ·pm·π·d·B
μ＝0.12
| |
|
|
|
Sample calculation 5 | Sample calculation 6 | |
|
| D: the diameter of axle (mm) | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 |
| B: width (mm) | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
| Δ d: effectively interference (mm) | 0.005 | 0.01 | 0.015 | 0.02 | 0.025 | 0.030 | 0.040 |
| E: Young's modulus | 207760 | 207760 | 207760 | 207760 | 207760 | 207760 | 207760 |
| Side plate thickness (mm) | 35 | 35 | 35 | 35 | 35 | 35 | 35 |
| K: thickness ratio | 0.36 | 0.36 | 0.36 | 0.36 | 0.36 | 0.36 | 0.36 |
| Ko: pin-and- |
0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Pm: average surface pressure (N/mm) | 35.879 | 71.756 | 107.643 | 143.521 | 179.399 | 215.268 | 287.024 |
| μ: friction factor | 0.120 | 0.120 | 0.120 | 0.120 | 0.120 | 0.120 | 0.120 |
| F: based on the coordinate force (N) of pin cooperation | 2726.92 | 5453.84 | 8180.76 | 10907.66 | 13634.58 | 16361.52 | 21815.36 |
| The quantity of pin | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Total pressure load (N) when being coupled in the side plate | 73627.4 | 147254.8 | 220882.2 | 294509.6 | 368137 | 441761 | 589014 |
Figure 30 illustrates an embodiment who the present invention is applied to the pin formula retainer of tapered roller bearing.As shown in the figure, pin formula retainer according to this embodiment comprises a plurality of pins 2 (one of them pin only is shown in the drawings) and a pair of annular side plate 3,3, wherein, described pin 2 is used for rotatably supporting the rolling element 1 of tapered roller bearing, described annular side plate 3 is used for keeping rolling element 1 by means of described pin 2, and described rolling element 1 equidistantly is provided with along the circumferencial direction of end ring (not shown).In each annular side plate 3, be formed with a plurality of pin joint batters 4 with penetrating, wherein, described a plurality of pin joint batters 4 respectively be formed on each auxiliary section 17,18 of selling on 2 two ends and cooperate to the magnitude of interference of 40 μ m with 5 μ m.
In addition, pin 2 is formed by iron or steel, and as SNCM431, S35C, S38C etc., RF quench hardened case 24 is formed on each pin surface as cementation zone.RF quench hardened case 24 is formed on the circumferential surface of pin 2, so that satisfy relation: L
1＞L
3＞L
1-2L
2, preferably, L
1-2T＞L
3＞L
1-2L
2, wherein, suppose that the whole length of pin 2 is L
1, the axial length of auxiliary section 17,18 is L
2, be L along the zone length of the RF quench hardened case 24 of the axial formation of pin 2
3, the thickness of annular side plate 3 is T.
On the two ends (auxiliary section 17,18) of pin 2 RF quench hardened case 24 is arranged also, wherein, by being defined as: L along the area L 3 of the pin 2 axial RF quench hardened cases 24 that form
1＞L
3＞L
1-2L
2, preferably, L
1-2T＞L
3＞L
1-2L
2, the two ends of described pin 2 are coupled in the pin joint batter 4 of annular side plate 3.Owing to can suppress the galling of rolling element 1 on pin 2 two ends like this, even in use rolling element 1 is shifted to annular side plate and is contacted with the end of pin 2, so, can increase the mechanical strength of pin 2 resistant to bending stresses.
Figure 31 is the exemplary view that is illustrated under the situation that forms RF quench hardened case 24 on the circumferential surface of pin 2.As shown in the figure, forming on the circumferential surface of pin 2 under the situation of RF quench hardened case 24, the RF electric current (it supplies to RF load coil 25) or the RF load coil 25 that carry out at the circumferential surface to pin 2 being adopted when RF quenches are controlled with respect to the relative moving speed of pin 2, wherein, described RF electric current and relative moving speed are respectively applied for the two ends (auxiliary section 17,18) of pin 2 and are used for other parts of pin 2.
As mentioned above, when on the circumferential surface of pin 2, forming the RF quench hardened case 24 as cementation zone, respectively control be used for pin 2 two ends (auxiliary section 17,18) and be used for the RF electric current (it supplies to RF load coil 25) of other parts or RF load coil 25 with respect to the relative moving speed of pin 2, can on the circumferential surface of pin 2, form the RF quench hardened case 24 of the homogeneous depth of quenching, even under the external diameter at the core of pin 2 and two ends situation inequality.
The invention is not restricted to the foregoing description.For example, although in the 7th embodiment shown in Figure 30, tapering part 21 is formed between the rear end (auxiliary section 18) and axial region 2c of pin 2, and tapering part 21 also can be formed between the auxiliary section 17 and axial region 2c on pin 2 the other ends, shown in the 8th embodiment as shown in Figure 32.In addition, although in the 7th and the 8th embodiment's illustrated the present invention is applied to the situation of the pin formula retainer of tapered roller bearing, but the present invention also may be used on perhaps being applied in the spheric roller bearing shown in Figure 31 in the roller bearing shown in Figure 33.In addition, although Figure 30, Figure 32 to each embodiment's illustrated shown in Figure 34 the present invention is applied to example in the pin formula retainer of radial roller bearing, but, for example, the present invention also may be used in the spherical roller thrust bearing shown in Figure 35, in the cylindrical roller thrust bearing shown in Figure 36 and in the tapered roller thrust bearing shown in Figure 37.
Then, narrate the ninth embodiment of the present invention with reference to Figure 38 to Figure 40.
As shown in figure 38, pin formula retainer according to the ninth embodiment of the present invention comprises a plurality of pins 2 (one of them pin only is shown in the drawings) and a pair of annular side plate 3,3, wherein, described pin 2 is used for rotatably supporting the rolling element 1 of tapered roller bearing, described annular side plate 3 is used for keeping rolling element 1 by means of described pin, and described rolling element 1 equidistantly is provided with along the circumferencial direction of end ring (not shown).A plurality of pin joint batters 4 are formed in each annular side plate 3 with penetrating, cooperate to the magnitude of interference of 40 μ m with 5 μ m with pin 2 ends being used for.
The two ends that are coupled to the pin 2 in the pin joint batter 4 are welded to respectively on the annular side plate 3, are configured as the annular of weld width constant on the outer side surface of weld part 19,20 each the comfortable annular side plate 3 between pin 2 and annular side plate.
Under the situation of aforesaid rigging pilotage formula retainer, the pad 30 that is used for size adjustment at first is connected to pin 2 from the outstanding two ends of the both ends of the surface of rolling element 1, as shown in figure 39, sells 2 two ends then and is mounted in the pin joint batter 4 in the annular side plate 3.Then, as shown in figure 40, the outer side surface of annular side plate 3 is become concave shape by calking tool (caulking jig) by plastic deformation, and after caulking is formed into the external peripheral surface of the minor diameter axial region 29 on pin 2 two ends, and the two ends and the annular side plate 3 of pin 2 welded together.
As mentioned above, because the pin joint batter 4 in the annular side plate 3 and to sell 2 cooperation be that magnitude of interference is the interference fit of 5 μ m to 40 μ m, weld part 19,20 in pin 2 and 3 formation of annular side plate is different under the situation of weld part as shown in Figure 4, can guarantee the join strength of 3 of pin 2 and annular side plate.Thereby, even when the load on sense of rotation (circumferencial direction) is applied on the pin, also can be suppressed at weld part between pin and annular side plate and produces stress and concentrate.
In addition, because diameter places the two ends of pin 2 less than the minor diameter axial region 29 of the external diameter of pin 2, as shown in figure 40, be assembled in the pin joint batter 4 of annular side plate 3, utilize compaction tool 31 just can easily make the part of annular side plate produce plastic deformation in case will sell 2 two ends by compaction tool 31.Thereby pin 2 can be fixed on the annular side plate 3 tightly, though sell 2 and the value of interference fit of 4 of pin joint batters be that 40 μ m are to 60 μ m.
Then, with reference to Figure 41 to 43 narration tenth embodiment of the present invention.
As shown in figure 41, be used in according to the pin formula retainer in the roller bearing of the tenth embodiment of the present invention and comprise a plurality of pins 2 (one of them pin only is shown in the drawings) and a pair of annular side plate 3,3, wherein, described pin 2 is used for rotatably supporting the rolling element 1 of tapered roller bearing, described annular side plate 3 is used for keeping rolling element 1 by means of described pin, and described rolling element 1 equidistantly is provided with along the circumferencial direction of end ring (not shown).In each annular side plate 3, be formed with a plurality of pin joint batters 4 respectively with penetrating, cooperate to the magnitude of interference of 40 μ m with 5 μ m with pin 2 ends being used for.
The two ends of pin 2 are welded to respectively on the annular side plate 3, be configured as the annular of weld width constant on the outer side surface of weld part 19,20 each the comfortable annular side plate 3 between pin 2 and annular side plate, be used for pin 2 and annular side plate 3 fixing lock screws 30 are revolved within it.
Under the situation of aforesaid rigging pilotage formula retainer, in pin 2 at first is assembled to pin joint batter 4 in the annular side plate 3 from the outstanding two ends of the both ends of the surface of rolling element 1, as shown in figure 42.Then, as shown in figure 43, screw 31 is formed on the both ends of the surface that pin is coupled to pin joint batter 4, and lock screw 30 screws in the screws 31, with will sell 2 and annular side plate 3 fixing, will sell 2 two ends and be connected on the annular side plate 3 by welding then.
As mentioned above, because the pin joint batter 4 in the annular side plate 3 and sell 2 cooperation and carry out interference fit to the magnitude of interference of 40 μ m with about 5 μ m, weld part 19,20 in pin 2 and 3 formation of annular side plate is different under the situation of weld part shown in Figure 4, can guarantee the join strength of 3 of pin 2 and annular side plate.Thereby, even when the load on sense of rotation (circumferencial direction) is applied on the pin, also can suppress to sell and annular side plate between welding portion produce stress and concentrate.
Then, narrate the 11st embodiment of the present invention with reference to Figure 44 to Figure 47.
As shown in figure 44, be used in according to the pin formula retainer in the roller bearing of the 11st embodiment of the present invention and comprise a plurality of pins 2 (one of them pin only is shown in the drawings) and a pair of annular side plate 3,3, wherein, described pin 2 is used for rotatably supporting the rolling element 1 of tapered roller bearing, described annular side plate 3 is used for keeping rolling element 1 by means of described pin, and described rolling element 1 equidistantly is provided with along the circumferencial direction of end ring (not shown).In each annular side plate 3, be formed with a plurality of pin joint batters 4 respectively, to be used for carrying out interference fit with 5 μ m to the magnitude of interference of 40 μ m with pin 2 ends with penetrating.
The two ends that are coupled to the pin 2 in the pin joint batter 4 are welded to respectively on the annular side plate 3, and by the blast burner for soldering 33 of shape as shown in figure 46, spot-welding part 32 is formed on the outer side surface of annular side plate 3, is welded on it, as shown in figure 45 will sell 2.
The inventor etc. have prepared two pin formula retainers, sell in the formula retainer for one therein, pin is connected (during weldering: be approximately 14 minutes) with annular side plate by spot welding, in another pin formula retainer, sell with annular side plate between be connected (during weldering: about 30 minutes) by having welding method now.Then, under the state of the dextrorotation ripple of the pin 20Hz that gives pin formula retainer, repeat to load tension load and compression load (load that applies: 1600kg), with research tapered roller bearing (external diameter: 650mm, internal diameter: 400mm, width: 250mm, rolling element quantity: 27, pin diameter: 12.6mm, retainer external diameter: 580mm, the retainer internal diameter: 542mm), bearing life, rupture owing to tired up to the base material of pin.The result is shown in the table 3.
Table 3
| The life estimate value | |
| Example 4 | 10 |
| Comparative example 3 | 1 |
| Comparative example 4 | 12 |
In table 3, example 4 is illustrated in by under the situation that spot welding will be sold and annular side plate links together, the life estimate value of tapered roller bearing, comparative example 3 is illustrated in not by under the situation that welding will be sold and annular side plate links together, the life estimate value of tapered roller bearing, and comparative example 4 is illustrated in under the situation that existing welding method will be sold and annular side plate links together the life estimate value of tapered roller bearing.
Can obviously find out from the test result shown in the table 3, by will sell 2 and annular side plate 3 usefulness spot-welded on can obtain together with existing situation under the bearing life of same degree.Thereby, by will sell with spot welding 2 and annular side plate 3 weld together, can be under the situation of the mechanical strength that does not reduce retainer widely, the weld part that can prevent 3 of shotpin 2 and annular side plate produces stress and concentrates.
Under the situation in will selling the 2 pin joint batters 4 that are assembled in the annular side plate 3, preferred adopt an end of cooling pin 2, will sell 2 methods that are assembled to pin joint batter 4 (cold cooperation) then, as shown in figure 47, perhaps adopt the circumferential section of heating pin receiving hole 4 and will sell the method that an end of 2 is assembled to (shrinkage fit) in the pin joint batter 4 then, as shown in figure 48.
Claims (19)
1. retainer that is used in the roller bearing, comprise a plurality of pins and a pair of annular side plate, wherein, described pin is used for the rotatably rolling element of support rollers bearing, and described annular side plate is used for keeping equidistantly being arranged on each rolling element on the bearing circumferencial direction by means of pin, wherein, the pin joint batter that cooperates with an end of pin is formed on the described a pair of annular side plate, wherein, the cooperation between pin and pin joint batter is the interference fit of 5 μ m or higher magnitude of interference
Wherein, pin has axial region, and this axial region passes the rolling element patchhole that is formed in rolling element the axle center in, and the diameter at two ends that is coupled to the pin in the pin joint batter is separately all greater than the diameter of axial region, and the diameter that is coupled to the two ends of the interior pin of pin joint batter differs from one another.
2. the retainer that is used in the roller bearing as claimed in claim 1 wherein, carries out interference fit with 5 μ m or higher and 40 μ m or littler magnitude of interference between pin and pin joint batter.
3. the retainer that is used in the roller bearing as claimed in claim 1 or 2, wherein, the end that is coupled to the pin in the pin joint batter is soldered on the annular side plate, and annular side plate has the weld part that is used for pin and annular side plate on outer side surface, and weld part is configured as the annular of constant width.
4. the retainer that is used in the roller bearing as claimed in claim 3 wherein, fetches the weld part that forms pin and annular side plate by TIG or plasma welding.
5. the retainer that is used in the roller bearing as claimed in claim 4, wherein, the weld part of annular side plate with respect to the elongation of its outer side surface in the 0.5mm scope.
6. as each described retainer that is used in the roller bearing in the claim 1 to 2, wherein, the end that pin is coupled in the pin joint batter forms by grinding.
7. as each described retainer that is used in the roller bearing in the claim 1 to 2, wherein, the surface roughness of pin joint batter is 1.2 μ m or lower.
8. as each described retainer that is used in the roller bearing in the claim 1 to 2, wherein, the pin joint batter is formed on the two of described a pair of annular side plate.
9. the retainer that is used in the roller bearing as claimed in claim 1, wherein, pin has chamfered part on its top end surface.
10. the retainer that is used in the roller bearing as claimed in claim 9, wherein, chamfered part is 30 ° or lower with respect to the angle of inclination of the circumferential surface of pin.
11. the retainer that is used in the roller bearing as claimed in claim 9, wherein, chamfered part axially is configured as arc along pin.
12. the retainer that is used in the roller bearing as claimed in claim 9, wherein, the pin joint batter has chamfered part at the internal surface place of annular side plate.
13. the retainer that is used in the roller bearing as claimed in claim 9, wherein, pin has tapering part between axial region and its rear end.
14. the retainer that is used in the roller bearing as claimed in claim 13, wherein, tapering part is 30 ° or lower with respect to the angle of inclination of the external peripheral surface of pin.
15. the retainer that is used in the roller bearing as claimed in claim 13, wherein, the rear end of pin and the border between the axial region axially are chamfered to arc along pin.
16. the retainer that is used in the roller bearing as claimed in claim 9, wherein, pin has cementation zone at the surface layer place of axial region.
17. the retainer that is used in the roller bearing as claimed in claim 16, wherein, the whole length of selling in hypothesis is L
1, the axial length between the two ends of pin is L
2, be L along the zone length of the axial formation cementation zone of pin
3The time, it is defined as: L
1＞L
3＞L
1-2L
2
18. the retainer that is used in the roller bearing as claimed in claim 16, wherein, the whole length of selling in hypothesis is L
1, the axial length between the two ends of pin is L
2, be L along the zone of the axial formation cementation zone of pin
3And the thickness of annular side plate is defined as it: L when being T
3＞L
1-2L
2＞L
1-2T.
19. the retainer that is used in the roller bearing as claimed in claim 16, wherein, be provided at circumferential surface by control and carry out the RF electric current of the RF load coil that uses when RF quenches and control the high-frequency induction heating coil separately forming cementation zone with respect to the relative moving speed of pin for the two ends of pin and other parts of pin to pin.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003132896 | 2003-05-12 | ||
| JP132896/2003 | 2003-05-12 | ||
| JP206549/2003 | 2003-08-07 | ||
| JP358338/2003 | 2003-10-17 | ||
| JP129959/2004 | 2004-04-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1784556A CN1784556A (en) | 2006-06-07 |
| CN100398857C true CN100398857C (en) | 2008-07-02 |
Family
ID=36773840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800126235A Expired - Fee Related CN100398857C (en) | 2003-05-12 | 2004-05-12 | Retainer for roller bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100398857C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009113534A1 (en) * | 2008-03-10 | 2009-09-17 | 株式会社ジェイテクト | Pin type retainer and method of assembling pin type retainer |
| DE102009012241A1 (en) * | 2009-03-07 | 2010-09-09 | Werner Beuerlein | Rolling bearing with segmented cage |
| GB2494399B (en) * | 2011-09-05 | 2018-04-18 | Cooper Roller Bearings Company Ltd | Roller bearing with pin mounted rollers |
| CN102518676A (en) * | 2011-12-30 | 2012-06-27 | 瓦房店轴承集团有限责任公司 | Three-row cylindrical roller bearing cage |
| CN104791379A (en) * | 2014-01-17 | 2015-07-22 | 舍弗勒技术股份两合公司 | Roller bearing |
| CN108097816A (en) * | 2017-12-26 | 2018-06-01 | 瓦房店轴承集团有限责任公司 | A kind of new retainer clinching method |
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| JP2002372053A (en) * | 2001-06-12 | 2002-12-26 | Tsubakimoto Chain Co | Roller bearing and chain with roller bearing built therein |
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|---|---|---|---|---|
| DE9109881U1 (en) * | 1991-08-09 | 1991-09-19 | SKF GmbH, 8720 Schweinfurt | Cage for roller bearing |
| JPH0891530A (en) * | 1994-09-28 | 1996-04-09 | Tsubakimoto Chain Co | Joint link for conveyor chain |
| JPH105899A (en) * | 1996-06-25 | 1998-01-13 | Japan Miyaki:Kk | Method for joining journal part to hollow roll end |
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| US6022147A (en) * | 1997-10-06 | 2000-02-08 | Nsk Ltd. | Roller bearing with a cage |
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| DE10031427A1 (en) * | 2000-06-28 | 2002-01-17 | Skf Gmbh | Cage for roller bearing comprises two disks connected by bolts, each of which runs through center of roller and is connected to each disk by sleeve mounted in bore in disk and which is press-fitted over bolt |
| JP2002206536A (en) * | 2001-01-10 | 2002-07-26 | Ntn Corp | Holder for roller bearing |
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| Publication number | Publication date |
|---|---|
| CN1784556A (en) | 2006-06-07 |
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