CN100470068C - Method for manufacturing linear bearing made from full stainless steel - Google Patents
Method for manufacturing linear bearing made from full stainless steel Download PDFInfo
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- CN100470068C CN100470068C CNB200710069894XA CN200710069894A CN100470068C CN 100470068 C CN100470068 C CN 100470068C CN B200710069894X A CNB200710069894X A CN B200710069894XA CN 200710069894 A CN200710069894 A CN 200710069894A CN 100470068 C CN100470068 C CN 100470068C
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- linear bearing
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- thin piece
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Abstract
This invention relates to a manufacturing method for stainless steel linear bearings including the following steps: first of all cutting a stainless steel tube to a tubular stock, then turning it to a tubular inside wall with interphase axial concave arc side and axial salient small concave arc side to prepare a bearing ferrule after heat process and rough grinding, in which a holder is made by punching a stainless steel cold-rolled plate on a punch with a die to a blank plate, then punching a middle groove, pulling a rolling runner, then punching a ball bearing groove, cutting outskirt and shaping it precisely.
Description
Technical field
The present invention relates to a kind of linear bearing manufacture method, particularly about the production and processing method of stainless steel linear bearing.
Background technique
The lasso of generic linear bearing adopts GGr15 Bearing Steel steel tubing in different shapes, earlier external diameter in the lasso is located processing in tolerance range behind blanking, then whole lasso is heat-treated, and external diameter slightly finish grindes processing in carrying out again, reaches the collar precision requirement at last.Retainer is to adopt engineering plastics to be injection molded into the tubular shape finished product by injection machine, by the steel ball and the rubber dust cap of bearing steel all size.Before assembling, to carry out the rank sorting, then by sorting rank assembling finished product to bearing ring.Because the generic linear bearing can not be used in special and rugged environment, particularly when acid, alkalescence and high humidity environment use, inside and outside short-term inner bearing lasso and steel ball produce corrosion and corrosion phenomenon.Retainer is that engineering plastics are made, and it is worked in temperature more than 100 ℃ and will deform and can not often work.The linear bearing retainer is main part in addition, and plastic cage is the injection molding machine of plastic injection molding product, without other processing, very strict in the processing in injection moulding to heater voltage, current requirements, and injecting products is all worked in three shifts, therefore by day with evening electric current and voltage variant, there is some difference to produce product, therefore quality just is difficult to guarantee stability in assembling.In addition, the plastic cage mechanical strength is not very strong, raceway both sides surface roughness less than 1.6, steel ball and plastic cage raceway are worked in the reciprocation cycle friction, raceway face produces wearing and tearing behind the work certain hour, thereby the reduction tolerance grade, also influences the service life of other parts and integrated equipment at reduction of service life.
Summary of the invention
The present invention is directed to the existing problem of generic linear bearing, design a kind of manufacture method of linear bearing made from full stainless steel, make product have acidproof, alkaline-resisting, humidity and resistant to elevated temperatures characteristic, reach and improve precision, increase the service life, and can with generic linear bearing general purpose mutually.
The present invention realizes above-mentioned target by the following technical solutions.
The manufacture method of linear bearing made from full stainless steel may further comprise the steps:
A, stainless steel shaft bearing ring earlier with stainless pipe through cutting into pipe shape blank, the turning shaft little interior alternate round tube inner wall face of concaved circular cambered surface of great circle cambered surface and axial projections that concaves after heat treatment slightly finish grindes again then, makes bearing ring;
B, stainless steel holder adopt stainless steel cold-rolled plate, stamp out retainer base sheet with press tool on punch press, through the punching press intermediate groove, and the stretching raceway, the punching press ball grooves is cut outside mouth and precision truing, makes the stainless steel holder slice, thin piece;
C, external coordination spare stainless steel ball, radially snap ring and dust cover carry out the accuracy tolerance check, remove reject;
D, with above-mentioned through being up to the standards stainless steel lasso, stainless steel holder slice, thin piece, stainless steel ball, radially snap ring and dust cover are assembled into the stainless steel linear bearing with the special tool anchor clamps.
The stainless steel linear bearing comprises bearing ring, steel ball, retainer sheet, main part in addition such as snap ring, dust cover radially, bearing ring and steel ball adopt the 9Gr18 stainless steel to make, this material Shu Mashi build stainless steel, contain high-carbon, high chromium element, therefore mechanical strength is big, can reach more than the HRC60 through hardness after the high-temperature heat treatment, and keep the stainless premium properties of other type, be to make the linear bearing optimal material of part in addition.
Described stainless steel holder slice, thin piece is a critical component of the present invention, select 1Gr13 stainless-steel cold-rolling sheet material for use, by the impact briquetting gradually on press machine of various moulds, the particularly making of the steel ball raceway of retainer slice, thin piece, carry out punching stretch forming by precision die and precision stamping lathe, and carry out surface treatment, and improve mechanical strength, improve operational efficiency, increase the service life.
The present invention is directed to the generic linear bearing exists not acidproof, not alkaline-resisting, can not water be arranged and surpass the present situation of working in the environment of temperature more than 100 ℃ at high humidity, for solving above shortcoming, and reach and the mutual general purpose of generic linear bearing energy, for this material to bearing ring, other part of steel ball adopts the 9Gr18 stainless steel material, this material can be acidproof, alkaline-resisting, can and water be arranged and the environment of temperature in 100 ℃～350 ℃ scopes can keep reaching using effect at high humidity.And in rugged environment over a long time, do not corrode, do not influence the product tolerance grade.Retainer adopts stainless steel 1Gr13 substituted for plastic material, and this kind stainless steel material has above characteristic outer and mechanical strength is big, and surface roughness can reach 0.8.Steel ball is done the reciprocation cycle motion on steel retainer raceway friction factor is significantly smaller than plastic cage, has not only prolonged working life and also can keep the product accuracy tolerance for a long time simultaneously.
Description of drawings
Fig. 1～6 are stainless steel shaft bearing ring flow process chart, and A is for axially analysing and observe, and B is for radially analysing and observe.
Fig. 7～13 are stainless steel holder slice, thin piece flow process chart, and A is for overlooking, and B is for vertically analysing and observe.
Figure 14 is a stainless steel linear bearing structural drawing.
Embodiment
The stainless steel sleeve circle manufacturing method
The work flow of stainless steel shaft bearing ring is shown in Fig. 1～6, the stainless steel shaft bearing ring adopts 9Gr18 to contain high carbon and chromium martensitic type stainless steel, its performance mainly is that mechanical strength is big, can reach more than the HRC60 by high-temperature heat treatment hardness, this stainless steel is the same with other stainless steel simultaneously acidproof, alkaline-resisting, an anti-high humility.Can in high-temperature and water environment, work, not corrosion, not corrode, and price is than other stainless steel cheap 40%.But this stainless steel cutting difficulty of processing is big, and the supply of material has only stainless steel bars or tubing in the market, and existing is the manufacture method of example explanation stainless steel shaft bearing ring with the stainless steel pipe.Tubing blanking lasso blank is carried out interior external diameter surplus cutting, other working surface is processed by actual tolerance, earlier lasso blank inwall is carried out turning and produce the little interior concaved circular cambered surface that radius is R1, again to the turning of inwall both ends of the surface outward-dipping 10～15 the degree the slope, on broaching machine, the lasso inwall is drawn the indent great circle cambered surface that several radiuses are R2 by special broaching tool again, the number that draws is decided general 4～6 by the caliber size.
The tolerance grade of concaved circular cambered surface is important in bearing ring inwall broaching tool draws, therefore broaching tool adopts Rapid Tool Steel 9w18Cr4v, this material has the back of quenching hardness Gao Keda HRC67, and has anti-seismic performance and anti-cutting ability all to be eager to excel than other tool steel.Broaching tool belongs to the spline type broaching tool, according to such broach length and diameter than length overall about 30D, it is longer than common product to add workpiece, be difficult for cutting again, the required precision height, so length overall increases about 5～10D concaved circular cambered surface required precision in could guaranteeing so again.Imperial palace concaved circular cambered surface broaching precision is IT7～IT8, surface roughness 1.6.The concaved circular cambered surface precision is IT6～IT7 in little, needs through accurate spheric grinding machine polishing, and surface roughness reaches 0.8, and broaching machine is selected the higher 40T hydraulic broaching machine equipment of precision simultaneously.
Then through high-temperature heat treatment, quenching temperature is 1000～1050 ℃, again through 200 ℃ of insulation tempering, can reach more than the HRC60 by integral hardness after the heat treatment, substantially reach the requirement of Bearing Steel heat treatment hardness, stainless steel lasso after the heat treatment carries out thick fine ginding by interior mill, outer flat surface grinding grinding machine to both ends of the surface inside and outside the lasso, is processed into qualified lasso.
Stainless steel holder slice, thin piece making method
The stainless steel holder slice, thin piece is oval steel ball raceway 3 in the middle of the slice, thin piece 2 shown in Fig. 7～13, and this raceway is made up of ball grooves and half elliptic roller track ditch butt joint of half elliptical openings, is provided with in the middle of the slice, thin piece two ends and the fixing locating notch 10 of lasso.
The stainless steel holder slice, thin piece is the critical piece of stainless steel linear bearing.When not only moving to bearing ball, it plays the maintenance effect, also have steel ball directly to contact with the retainer raceway, move in circles to undertake in the operation work and support and the unblocked row that holds up carrying out straight line, if being in operation above the tolerance range steel ball, the steel ball slot rolling width on the retainer will fall steel ball, if the retardance phenomenon can take place too small being in operation of tolerance, guarantee that therefore the retainer precision is to guarantee the good reliable assurance of bearing linear movement.
For making the stainless steel holder structure reach the tolerance grade requirement, on different press machines, carry out continuous productive process by special-purpose particular mold, the concrete employing do not have the manufacturing of cutting process for stamping, may further comprise the steps, shown in Fig. 7～13:
A, employing stainless-steel cold-rolling sheet material stamp out the retainer slice, thin piece blank that leaves surplus with the J23-6 press machine in mould, shown in Figure 7;
B, upper track is fallen slice, thin piece be put in the drawing die, stamp out intermediate groove with the J23-6 press machine, shown in Figure 8;
C, the another side that will stamp out the intermediate groove slice, thin piece are put in the high-precision drawing die, press stretching raceway 3 in CAF-10 precision stamping lathe upper punch, and precision keeps IT6～IT7 level, and is shown in Figure 9;
D, the slice, thin piece that will stretch through raceway carry out the opening slot punching press by specialized mould to the raceway ball grooves 4 of punched openings on one side on CAF-10 precision stamping lathe, accuracy tolerance is in IT6～IT7 level, and is shown in Figure 10;
E, to raceway and the in type slice, thin piece of ball grooves two ends punching press positioning port, on the J23-6 press machine, positioning port is opened at the slice, thin piece two ends, shown in Figure 11;
F, the slice, thin piece of handling through last operation is placed on the precision truing mould, carries out precision truing with accurate CAT-6 press machine, the raceway precision by shaping reaches about the IT6 level, and is shown in Figure 12;
G, be placed on through the slice, thin piece that precision truing is crossed and cut edge around carrying out on the J23-6 press bed, cut the surplus part;
H, at last the qualified retainer slice, thin piece of punching press, be put into and adopt small abrasive grains and lapping liquid to carry out the deburring unhairing on the GST type vibrations buffing machine, threw through 30～40 minutes to grind for every and reach full wafer and do not have burr, surface roughness reaches about 0.8, and is shown in Figure 13.
In the above-mentioned manufacturing process, pay close attention to machining accuracy and surface roughness, because of stainless-steel cold-rolling sheet material is higher than common cold rolled sheet far away in that mechanical strength, difficulty of processing etc. are former, require high again to the drawing and forming tolerance grade, therefore all kinds of moulds such as drawing and forming are selected for use wear resistance, impact, the Hardmetal materials of the stronger G20 trade mark is made, and these alloy material hardness are higher than the common die material far away, therefore on the make through the technology demonstration, on general making basis, just should do further refine to special crucial mould.The drawing die precision reaches IT5 level roughness and reaches about 0.2.The mould reliability is guaranteed, not only reaches raising working life but also make the workpiece quality that stamps out in the tolerance grade scope of designing requirement.Press machine requires choose reasonable according to product sequence, particularly the master operation of steel ball rolling channel processing is a stretching process, should select for use the precision stamping lathe to combine with precision die, guarantee that other part form and position tolerance of operation reaches required precision, thereby the global tolerance precision of retainer is reached in the designing requirement scope.
Each accessory of stainless steel linear bearing is prepared to put in place, can assemble it, and manufacturing process is as follows:
At first the stainless steel lasso of machine shaping, the stainless steel holder slice, thin piece cleans clean the processing, and the steel ball that lasso behind the sorting classifying and each specification match is placed in same position is convenient to assemble.
Stainless steel holder is the rectangular slice, thin piece, therefore specific packaging technology is arranged in assembling, referring to Figure 14, earlier slice, thin piece 2 a slice a slice skewers are gone in the lasso 1, with before lasso cooperates, every slice, thin piece is filled steel ball 6, again slice, thin piece being connected the steel ball skewer goes in the lasso, spin groove 4 should be aimed at the little arc surface of lasso internal projection on the fashionable slice, thin piece of skewer, steel ball 6 is alignd with the microscler spin groove 4 of retainer on lasso projection working surface 5, and special-purpose pincet is fixed on slice, thin piece on the lasso inwall, treats that slice, thin piece all packs into customization circular arc snap ring 7 that retainer and lasso is fixed again behind the lasso inwall.
The both ends of the surface dust cover adopts special fixture that stainless steel dust cover 8 is fixedly buckled at the lasso two ends.
Assembling finished product employing standard is ended drift finished product is detected examination, remove reject and carry out inching or finishing, finally reach 100% qualified finished product blocking dumb product with flexible axle.
Claims (5)
1, the manufacture method of linear bearing made from full stainless steel may further comprise the steps:
A, stainless steel shaft bearing ring earlier with stainless pipe through cutting into pipe shape blank, the turning shaft little interior alternate round tube inner wall face of concaved circular cambered surface of great circle cambered surface and axial projections that concaves after heat treatment slightly finish grindes again then, makes bearing ring;
B, stainless steel holder adopt stainless steel cold-rolled plate, stamp out retainer base sheet with press tool on punch press, through the punching press intermediate groove, and the stretching raceway, the punching press ball grooves is cut outside mouth and precision truing, makes the stainless steel holder slice, thin piece;
C, external coordination spare stainless steel ball, radially snap ring and dust cover carry out the accuracy tolerance check, remove reject;
D, with above-mentioned through being up to the standards stainless steel lasso, stainless steel holder slice, thin piece, stainless steel ball, radially snap ring and dust cover are assembled into the stainless steel linear bearing with the special tool anchor clamps.
2, the manufacture method of linear bearing made from full stainless steel according to claim 1, it is characterized in that pipe shape blank inwall is carried out turning produces the little interior concaved circular cambered surface that radius is R1, to the slope of outward-dipping 10～15 degree of inwall both ends of the surface turning, on broaching machine, the lasso inwall is drawn the indent great circle cambered surface that several radiuses are R2 by special broaching tool more again.
3, the manufacture method of linear bearing made from full stainless steel according to claim 1 is characterized in that the heat treated quenching temperature of lasso is 1000～1050 ℃, through 200 ℃ of insulation tempering, can reach HRC60 by integral hardness after the heat treatment again.
4, the manufacture method of linear bearing made from full stainless steel according to claim 1, it is characterized in that the stainless steel holder slice, thin piece that will stretch through raceway carries out the ball grooves of punched openings by specialized mould on the precision stamping lathe, accuracy tolerance is in IT6～IT7 level.
5, the manufacture method of linear bearing made from full stainless steel according to claim 1, it is characterized in that the stainless steel holder slice, thin piece, adopt small abrasive grains and lapping liquid to carry out the deburring unhairing through being put into behind the precision truing on the vibrations buffing machine, threw through 30～40 minutes to grind for every and reach full wafer and do not have burr, surface roughness reaches 0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710069894XA CN100470068C (en) | 2007-07-04 | 2007-07-04 | Method for manufacturing linear bearing made from full stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710069894XA CN100470068C (en) | 2007-07-04 | 2007-07-04 | Method for manufacturing linear bearing made from full stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101092989A CN101092989A (en) | 2007-12-26 |
| CN100470068C true CN100470068C (en) | 2009-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200710069894XA Expired - Fee Related CN100470068C (en) | 2007-07-04 | 2007-07-04 | Method for manufacturing linear bearing made from full stainless steel |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019545B (en) * | 2010-09-28 | 2012-04-25 | 洛阳世必爱特种轴承有限公司 | Super-finishing method for bearing raceway surface |
| CN102029513B (en) * | 2010-09-28 | 2012-04-25 | 洛阳世必爱特种轴承有限公司 | Convexity modifying method for bearing raceway |
| CN104763743A (en) * | 2014-01-08 | 2015-07-08 | 全球传动科技股份有限公司 | Method for manufacturing rectilinear-motion module |
| CN110594233B (en) * | 2019-09-03 | 2021-06-29 | 浙江大学 | Hydraulic cylinder structure of hydraulic system with higher frequency response requirement and limited installation space |
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