CN112658067A - Device and method for adjusting straightness of shaft workpiece - Google Patents
Device and method for adjusting straightness of shaft workpiece Download PDFInfo
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Abstract
本发明公开了一种轴类工件直线度调整装置及其调整方法，其中所述调整装置包括用于给所述轴类工件提供径向压力的调直机构和在径向方向上上下夹紧所述轴类工件的夹紧定位机构，其中：所述调直机构包括压头、用于驱动所述压头上下移动的调直驱动机构和给所述压头提供直线导向的导向机构；所述夹紧定位机构固定设置的上夹紧块和利用双级驱动结构驱动的下夹紧块。本发明适用于不同硬度、不同径向跳动量的轴类工件，可有效提高调直效率。
The invention discloses a straightness adjusting device for a shaft workpiece and an adjusting method thereof, wherein the adjusting device comprises a straightening mechanism for providing radial pressure to the shaft workpiece and a clamping mechanism for clamping up and down in the radial direction. The clamping and positioning mechanism for the shaft workpiece, wherein: the straightening mechanism comprises an indenter, a straightening drive mechanism for driving the indenter to move up and down, and a guide mechanism for providing linear guidance to the indenter; the The clamping and positioning mechanism has a fixed upper clamping block and a lower clamping block driven by a double-stage driving structure. The invention is suitable for shaft workpieces with different hardness and different radial runout, and can effectively improve the straightening efficiency.
Description
Technical Field
The invention relates to the technical field of shaft workpiece processing, in particular to a device and a method for adjusting the straightness of a shaft workpiece.
Background
In the machining industry, thin shaft workpieces are usually machined in a turning or grinding mode, and straightness is not easy to guarantee in the machining process, so that radial run-out of the tail end is poor. At present, two process routes of a sleeve straightening method and a straightening bar straightening method are mainly adopted as process methods for straightening a slender shaft, wherein the principle of the sleeve straightening method is that a shaft to be straightened passes through a standard straightening sleeve, and the clearance between the sleeve and the shaft and the feeding speed are strictly controlled, so that the integral straightening of the shaft part is realized. However, the method is mainly used for straightening the optical axis and is difficult to meet the straightening requirement of the stepped shaft; the straightening force of the straightening bar straightening method is large, the straightening bar is not easy to rebound after straightening, and the straightening bar straightening method is generally used for straightness adjustment of large structural parts and has the defects that the small straightening force is difficult to control, the overshoot phenomenon is easy to generate when the critical point is approached, repeated straightening is needed, and the efficiency is influenced. Therefore, the invention designs a device for adjusting the straightness of the shaft workpiece aiming at the structural characteristics of the stepped slender shaft.
Disclosure of Invention
The invention aims to provide a straightness adjusting device for a shaft workpiece, aiming at the defect that straightening equipment aiming at a stepped shaft is lacked in the prior art, and the straightness adjusting device is suitable for straightening a slender stepped shaft and an optical axis.
The invention also aims to provide an adjusting method based on the straightness adjusting device for the shaft workpieces, which is suitable for shaft workpieces of different models and has high straightening efficiency.
The technical scheme adopted for realizing the purpose of the invention is as follows:
the straightness adjusting device for the shaft workpieces comprises a straightening mechanism for providing radial pressure for the shaft workpieces and a clamping and positioning mechanism for clamping the shaft workpieces up and down in the radial direction, wherein:
the straightening mechanism comprises a pressure head, a straightening driving mechanism and a guide mechanism, the straightening driving mechanism is used for driving the pressure head to move up and down, the guide mechanism provides linear guide for the pressure head, and a straightening force application surface is formed at the bottom of the pressure head;
the double-stage driving structure comprises a secondary power mechanism and a primary power mechanism driven by the secondary power mechanism, wherein the secondary power mechanism is used for driving the lower clamping block;
the length directions of the straightening force application surface and the pressing surface are both positioned in the axial direction of the shaft workpiece.
In the technical scheme, the upper clamping block is fixed on the bottom plate through a support, the primary power mechanism is a first cylinder fixed at the lower part of the bottom plate, the secondary power mechanism is a second cylinder driven by the first cylinder and provided with a guide, the bottom of a guide rod of the second cylinder is fixed at the top of a cylinder rod of the first cylinder through a guide rod connecting plate, and the lower clamping block is fixed at the top of the second cylinder.
In the above technical scheme, a V-shaped groove is arranged on the symmetrical plane of the long side direction of the supporting surface, and the pressing surface is a plane.
In the above technical solution, a chamfer is formed on the outer side of the upper clamping block in the long side direction.
In the above technical scheme, the lower clamping block is fixed at the top of the second cylinder through a connecting plate, through holes are formed in two ends of the guide rod connecting plate and are respectively used for connecting two guide rods of the second cylinder, threaded holes are formed in the end surfaces of the guide rods, and fastening screws penetrate through the through holes and then enter the threaded holes to fix the guide rod connecting plate on the end surfaces of the guide rods.
In the technical scheme, the support is an inverted L-shaped plate, the top surface of the upper clamping block is fixed on the lower bottom surface of a horizontal plate at the top of the L-shaped plate, the bottom of a vertical plate of the L-shaped plate is fixed on the bottom plate, and a right-angled triangular reinforcing rib is fixed between the vertical plate and the bottom plate.
In the above technical scheme, the straightening driving mechanism is an electric cylinder, the electric cylinder is fixed on the bottom plate through a support frame, the support frame comprises a horizontal electric cylinder bearing plate and a vertical supporting vertical plate, and the electric cylinder is fixed on the top of the electric cylinder bearing plate.
In the above technical scheme, the straightening mechanism further comprises a pressure sensor for sensing the pressure of the pressure head, one end of the pressure sensor is fixed on the extending guide rod of the electric cylinder, and the other end of the pressure sensor is fixed on the pressure head.
In the technical scheme, the two ends of the pressure sensor are provided with external thread screws, the upper external thread screw is connected with the extending guide rod of the electric cylinder, and the lower external thread screw is connected with the top of the pressure head.
In the technical scheme, a connecting through hole for the end part of the pressure sensor to penetrate is formed in the upper end face of the pressure head, a square blind hole communicated with the connecting through hole is formed in the middle of the front side face of the pressure head, and the cover plate is detachably fixed on the front side face of the pressure head to cover the square blind hole.
In the technical scheme, the lower end face of the pressure head is of an arc-shaped structure.
In the above technical scheme, the guide mechanism includes two guide limit blocks fixed on the support vertical plate and two convex blocks respectively formed on two side faces of the pressure head, and the convex blocks are in clearance fit with the corresponding guide grooves on the guide limit blocks.
In the above technical solution, the distance between the clamping and positioning mechanism and the straightening mechanism is adjustable.
In the technical scheme, the bottom of the supporting vertical plate is fixed on the bottom plate through an adjustable positioning assembly, the adjustable positioning assembly comprises a plurality of optional adjusting through holes formed in the bottom plate, the adjusting through holes are uniformly distributed along the length direction of the shaft workpiece, and the supporting vertical plate is fixed in the adjusting through holes of the bottom plate through positioning screws.
In the technical scheme, the first air cylinder is fixed on the bottom plate through the position adjusting assembly, the first air cylinder is fixed at the bottom of the lower seat plate, the lower seat plate is fixed on the bottom plate through the position adjusting assembly, a through hole for the air cylinder rod to pass through is formed in the lower seat plate, and a square hole is formed in the bottom plate to provide a moving space for the guide rod connecting plate.
In another aspect of the present invention, an adjusting method of the straightness adjusting device for a shaft-like workpiece includes the following steps:
and 3, selecting a driving mode to enable the clamping force to be larger than the straightening force:
for the shaft workpiece with higher hardness, the first-stage power mechanism and the second-stage power mechanism are simultaneously started and driven, the lower clamping block is upwards applied with force while in the two-stage driving structure, and the upper clamping block is matched to clamp one end of the shaft workpiece;
for the shaft workpiece with lower hardness, the two-stage power mechanism is started, the lower clamping block is upward under the force application of the two-stage power mechanism, and the upper clamping block is matched to clamp one end of the shaft workpiece;
and 4, starting the straightening driving mechanism, and applying a radial straightening force to the large-jumping position of the shaft workpiece by the pressure head.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the straightness adjusting mechanism for the long-axis parts, the straightening mechanism is pushed by the electric cylinder, continuous pressing straightening force is provided in a servo stepping mode, the rebound of a workpiece can be prevented, and the straightening effect is guaranteed.
2. The mechanism is also provided with a position adjusted along the axial direction of the workpiece, namely the distance between the clamping and positioning mechanism and the straightening mechanism is adjustable, so that the equal-force straightening operation under the condition of different arm lengths can be met, and the straightening efficiency can be effectively improved.
3. The pressure sensor can monitor the size of the straightening force generated by the electric cylinder in real time and feed back the straightening force to the control system, can match corresponding straightening forces for different shaft workpieces, and has certain intelligent functions.
4. In the design of the two-stage stressing retaining mechanism, the tail end of the guide rod of the double-guide-rod cylinder is provided with the connecting plate, and the guide rod of the stressing cylinder acts on the middle part of the connecting plate and is connected with the air passage of the clamping cylinder in series to keep linkage, so that after the straightening positioning mechanism is in place, the lower clamping block (the lower V-shaped positioning seat) realizes three-point stress, the straightening effect is effectively improved, and the straightening efficiency is improved.
5. The design of the two-stage driving structure of the clamping mechanism ensures that the double-stage driving mechanism can be suitable for shaft workpieces with different hardness, a single-stage power mechanism is started for the shaft workpieces with smaller hardness, and a two-stage power mechanism is started for the shaft workpieces with larger hardness, so that the output clamping force is ensured to be greater than the straightening force, the clamping part is prevented from returning, repeated straightening is avoided, and the working efficiency is improved.
6. The device has wide application range, is suitable for optical axis workpieces, stepped shaft workpieces and shaft workpieces with other structures on the surfaces, and is also suitable for shaft workpieces made of materials with different hardness.
Drawings
Fig. 1 shows a front view of the present invention.
Fig. 2 shows a cross-sectional view of the present invention.
Fig. 3 is a side view of the present invention.
Fig. 4 is an isometric view of the present invention.
In the figure: 1-bottom plate, 2-upper clamping block, 3-lower clamping block, 4-first air cylinder, 5-guide rod connecting plate, 6-air cylinder rod, 7-second air cylinder, 8-guide rod, 9-shaft workpiece, 10-connecting plate, 11-lower seat plate, 14-bracket, 15-reinforcing rib, 19-through hole, 20-chamfer, 21-fixed hole position, 22-pressure head, 23-electric cylinder, 24-electric cylinder bearing plate, 25-supporting vertical plate, 26-pressure sensor, 27-cover plate, 28-guiding limiting block, 29-lug and 30-adjusting through hole.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The utility model provides an axle type work piece straightness accuracy adjusting device, is including being used for giving axle type work piece 9 provides radial pressure's alignment mechanism and presss from both sides tight clamping position mechanism of axle type work piece 9 from top to bottom in radial direction, wherein:
the straightening mechanism comprises a pressure head 22, a straightening driving mechanism for driving the pressure head 22 to move up and down and a guide mechanism for providing linear guide for the pressure head, and a straightening force application surface is formed at the bottom of the pressure head 22;
the clamping positioning mechanism is fixedly provided with an upper clamping block 2 and a lower clamping block 3 driven by a two-stage driving structure, the bottom surface of the upper clamping block 2 forms a lower pressing surface for pressing a shaft workpiece 9, the top surface of the lower clamping block 3 forms a supporting surface for supporting the shaft workpiece 9, the two-stage driving structure comprises a two-stage power mechanism and a one-stage power mechanism driven by the two-stage power mechanism, and the lower clamping block 3 is driven by the two-stage power mechanism with guide;
the length directions of the straightening force application surface and the pressing surface are both positioned in the axial direction of the shaft workpiece.
The straightening mechanism applies straightening force in the direction opposite to the jumping direction at the large jumping position close to the tail end of the long shaft, the clamping and positioning mechanism clamps and positions the shaft workpiece 9 at the reaction force point and provides clamping force larger than the straightening force, and the straightness straightening of the shaft part is realized. When the straightening pressure is applied, the action point of the generated feedback force is a reaction force point due to the lever action. To the less axle type work piece 9 of hardness, press from both sides tight piece 3 down and upwards cooperate and press from both sides tight piece 2 and press from both sides tight axle type work piece 9 on the drive of second grade power unit, prevent that the clamp force is too big, axle type work piece 9 takes place deformation, and to the great axle type work piece 9 of hardness, one-level power unit and second grade power unit drive down simultaneously and press from both sides tight piece 3 upwards and cooperate and press from both sides tight piece 2 and press from both sides tight axle type work piece 9 on.
Example 2
For the clamp positioning mechanism:
preferably, the upper clamping block 2 is fixed on the bottom plate 1 through a bracket 14, the first-stage power mechanism is a first cylinder 4 fixed at the lower part of the bottom plate 1, the second-stage power mechanism is a second cylinder 7 driven by the first cylinder 4 and provided with a guide, the bottom of a guide rod 8 of the second cylinder 7 is fixed at the top of a cylinder rod 6 of the first cylinder 4 through a guide rod connecting plate 5, and the lower clamping block 3 is fixed at the top of the second cylinder 7.
The reaction force point of the shaft workpiece 9 is placed on the supporting surface of the lower clamping block 3, the second cylinder 7 is started for the shaft workpiece 9 with low hardness, the guide rod 8 extends out, the bottom of the second cylinder 7 faces upwards, and the lower clamping block 3 is driven until the top end of the shaft workpiece 9 abuts against the lower pressing surface.
For a shaft workpiece 9 with high hardness, the first cylinder 4 and the second cylinder 7 are started simultaneously, the cylinder rod 6 extends out, the guide rod connecting plate 5 faces upwards, the guide rod 8 extends out, the second cylinder 7 faces upwards, the lower clamping block 3 faces upwards under the action of force while in a double-stage driving structure, and the output force is larger. Because when the aligning force is great, under the lever principle effect, lower clamp piece 3 can produce and roll back, and the lifting force that second cylinder 7 provided is not enough to offset the aligning force completely, and at this moment, the thrust of first cylinder 4 acts on guide arm 8, forms bigger stopping force, improves the aligning effect and improves aligning efficiency.
Preferably, the second cylinder with guide 7 is a double-guide-rod cylinder. In addition, the second cylinder 7 with guide can be a common single-rod cylinder and an axial guide mechanism, the double-guide-rod cylinder is a standard universal pneumatic element, and the double-guide-rod structure can avoid annular rotation when the cylinder body extends out, so that the unidirectionality of the feeding direction is ensured. Providing a clamping force on the shaft workpiece 9 in the radial direction.
Preferably, a V-shaped groove is formed in a symmetrical plane of the support surface in the long side direction, and the pressing surface is a plane. When the shaft type workpiece clamping device is used, the shaft type workpiece 9 is placed in the V-shaped groove, and three-point positioning is formed by combining the pressing surface of the plane structure of the upper clamping block 2.
Preferably, a chamfer 20 is formed on the outer side of the upper clamp block 2 in the longitudinal direction. The chamfer forms a space for taking and placing the shaft workpiece 9, so that the shaft workpiece is convenient to take and place, and more preferably, the chamfer is a chamfer of 5 multiplied by 45 degrees.
Preferably, the lower clamping block 3 is fixed to the top of the second cylinder 7 by a connecting plate 10. The lower end face of the lower clamping block 3 is provided with a threaded hole and is fixed on the connecting plate 10 through a screw, and the connecting plate 10 is fixed on the top of the second cylinder 7 through a screw.
Preferably, through holes are formed in two ends of the guide rod connecting plate 5 and are respectively used for connecting two guide rods 8 of the second air cylinder 7, threaded holes are formed in the end surfaces of the guide rods 8, and fastening screws penetrate through the through holes and then enter the threaded holes to fix the guide rod connecting plate 5 on the end surfaces of the guide rods 8. The guide rod connecting plate 5 is a bearing part of the acting force of the first air cylinder 4.
Preferably, the support 14 is an inverted L-shaped plate, the top surface of the upper clamping block 2 is fixed on the lower bottom surface of a horizontal plate at the top of the L-shaped plate, and the bottom of a vertical plate of the L-shaped plate is fixed on the bottom plate 1. An inverted L-shaped plate provides support and location for the upper clamping block 2.
Preferably, a reinforcing rib 15 in the shape of a right triangle is fixed between the vertical plate and the bottom plate 1. Two right-angle sides of the reinforcing rib 15 are respectively fixed on the bottom plate 1 and the vertical plate through screws, so that a larger supporting force is provided for the support 14, and the vertical plate is prevented from deforming. Thereby providing greater support for the clamp locating feature.
Example 3
For the straightening mechanism:
the straightening mechanism also includes a pressure sensor 26 for sensing the pressure of the ram 22. The pressure sensor 26 is a component for monitoring the size of the straightening force of the straightening mechanism, and the pressure sensor is in communication connection with the control unit and can control the pressure of the pressure head 22 so as to control the straightening force and prevent the straightening force from being too large and difficult to rebound.
The straightening driving mechanism is an electric cylinder 23, and the electric cylinder 23 is fixed on the bottom plate 1 through a support frame. The support frame includes horizontally electric jar loading board 24 and vertical support riser 25, electric jar 23 is fixed in the top of electric jar loading board 24, and electric jar loading board 24 up end is equipped with the screw that is used for connecting support riser 25, and the lower terminal surface is equipped with the screw that is used for connecting electric jar 23. The flatness and the face parallelism of the film are not more than 0.05 mm. The electric cylinder 23 is a general electric actuator and can provide straightening force.
Preferably, one end of the pressure sensor 26 is fixed to the extension rod of the electric cylinder 23, and the other end is fixed to the ram 22. Two ends of the pressure sensor 26 are provided with external thread screws, the upper external thread screw is connected with the extending guide rod of the electric cylinder 23, and the lower external thread screw is connected with the top of the pressure head 22. The tail end of the extending guide rod of the electric cylinder 23 is provided with an external thread, and an upper external thread screw of the pressure sensor is fixed at the tail end of the extending guide rod by using a locking nut.
Preferably, a connecting through hole for the end of the pressure sensor 26 to penetrate through is formed on the upper end surface of the pressure head 22, a square blind hole communicated with the connecting through hole is formed in the middle of the front side surface of the pressure head 22, and a cover plate 27 is detachably fixed on the front side surface of the pressure head 22 to cover the square blind hole. The connecting through hole is used for penetrating a wire connecting head (a lower external thread screw) at the bottom end of the pressure sensor 26, the cover plate 27 is detached, a fastening nut is sent into the square blind hole and then fastened on the lower external thread screw, the pressure sensor 26 is fixed to the top of the pressure head 22, and the cover plate 27 is fixed to the front side face of the pressure head 22 through a screw.
Preferably, the lower end surface of the pressing head 22 is of an arc structure. The contact between the pressure head 22 and the shaft workpiece 9 is ensured not to cause scratches.
Preferably, the guide mechanism includes two guide limit blocks 28 fixed on the supporting vertical plate 25 and two protrusions 29 respectively formed on two side surfaces of the pressing head 22, and the protrusions 29 are in clearance fit with the corresponding guide grooves on the guide limit blocks. Two direction stopper 28 all are equipped with the countersunk head through-hole, and connecting screw passes the countersunk head through-hole and will lead stopper 28 and be fixed in the preceding facade upper portion of supporting riser 25 and be close to the both sides of side facade, and the distance of two direction stoppers 28 is used for realizing sliding clearance fit with the pressure head and is the standard design, guarantees that the pressure head pushes down or the straightness accuracy of promotion is not more than 0.02mm, and when the pressure head reciprocated, lug 29 slides in the guide way.
Example 4
The distance between the clamping and positioning mechanism and the straightening mechanism is adjustable. Therefore, the distance between the clamping mechanism and the force application mechanism is adjusted, the distance between the force application point and the feedback force application point is adjustable, and the clamping mechanism is suitable for shaft workpieces 9 with different radial runout sizes.
As a preferable mode, the bottom of the supporting vertical plate 25 is fixed on the bottom plate 1 through an adjustable positioning assembly, the adjustable positioning assembly includes a plurality of optional adjusting through holes 30 formed on the bottom plate 1, the adjusting through holes are uniformly distributed along the length direction of the shaft-like workpiece 9, and the supporting vertical plate 25 is fixed in the adjusting through holes 30 of the bottom plate 1 through positioning screws.
Or the first air cylinder 4 is fixed on the bottom plate 1 through a position adjusting component, the first air cylinder 4 is fixed at the bottom of the lower seat plate 11, the lower seat plate 1 is fixed on the bottom plate 1 through the position adjusting component, a through hole 19 for the air cylinder rod 6 to pass through is formed in the lower seat plate 11, and a square hole is formed in the bottom plate 1 to provide a moving space for the guide rod connecting plate 5. The position adjusting assembly comprises a plurality of selectable fixing hole positions 21 formed on the bottom plate 1, the plurality of fixing hole positions 21 are uniformly distributed along the axial direction of the shaft workpiece 9 and are symmetrically arranged on the left side and the right side of the square hole, and the lower seat plate 11 is fixed in the fixing hole positions 21 through screws. The lower seat plate 11 is a bearing part of the first cylinder 4, and is provided with a threaded hole and a through hole for connecting the first cylinder 4 and the bottom plate 1.
When the cylinder rod 6 returns, the guide rod connecting plate 5 enters the square hole, and when the position of the lower seat plate 11 is adjusted through the adjusting assembly, the guide rod connecting plate 5 moves left and right correspondingly at the position in the square hole.
In this embodiment, the distance between the clamping and positioning mechanism and the straightening mechanism can be adjusted by adjusting the position of the supporting vertical plate 25 or the position of the lower seat plate 1, so that the device is convenient and fast, the application range is expanded, and the device is suitable for shaft workpieces with different radial runout.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (16)
1. The straightness adjusting device for the shaft workpieces is characterized by comprising a straightening mechanism for providing radial pressure for the shaft workpieces and a clamping and positioning mechanism for clamping the shaft workpieces up and down in the radial direction, wherein:
the straightening mechanism comprises a pressure head, a straightening driving mechanism and a guide mechanism, the straightening driving mechanism is used for driving the pressure head to move up and down, the guide mechanism provides linear guide for the pressure head, and a straightening force application surface is formed at the bottom of the pressure head;
the double-stage driving structure comprises a secondary power mechanism and a primary power mechanism driven by the secondary power mechanism, wherein the secondary power mechanism is used for driving the lower clamping block;
the length directions of the straightening force application surface and the pressing surface are both positioned in the axial direction of the shaft workpiece.
2. The straightness adjusting device for shaft-like workpieces as claimed in claim 1, wherein the upper clamping block is fixed on the bottom plate through a bracket, the primary power mechanism is a first cylinder fixed on the lower portion of the bottom plate, the secondary power mechanism is a second cylinder driven by the first cylinder and provided with a guide, the bottom of the guide rod of the second cylinder is fixed on the top of the cylinder rod of the first cylinder through a guide rod connecting plate, and the lower clamping block is fixed on the top of the second cylinder.
3. The straightness adjusting device for shaft-like workpieces according to claim 1, wherein a V-shaped groove is formed in a symmetrical plane in the long side direction of the supporting surface, and the pressing surface is a plane.
4. The straightness adjusting device for shaft-like workpieces according to claim 1, wherein a chamfer is formed on the outer side in the longitudinal direction of the upper clamping block.
5. The straightness adjusting device for shaft-like workpieces as claimed in claim 2, wherein the lower clamping block is fixed on the top of the second cylinder through a connecting plate, through holes are formed at two ends of the guide rod connecting plate and are respectively used for connecting two guide rods of the second cylinder, threaded holes are formed in end faces of the guide rods, and fastening screws penetrate through the through holes and enter the threaded holes to fix the guide rod connecting plate on the end faces of the guide rods.
6. The straightness adjusting device for shaft workpieces as claimed in claim 2, wherein the support is an inverted L-shaped plate, the top surface of the upper clamping block is fixed on the lower bottom surface of the top horizontal plate of the L-shaped plate, the bottom of the vertical plate of the L-shaped plate is fixed on the bottom plate, and a right triangle reinforcing rib is fixed between the vertical plate and the bottom plate.
7. The straightness adjusting device for shaft-like workpieces as claimed in claim 1, wherein the straightening driving mechanism is an electric cylinder, the electric cylinder is fixed on the bottom plate through a support frame, the support frame comprises a horizontal electric cylinder bearing plate and a vertical support vertical plate, and the electric cylinder is fixed on the top of the electric cylinder bearing plate.
8. The straightness adjusting device for shaft-like workpieces as claimed in claim 7, wherein the straightening mechanism further comprises a pressure sensor for sensing the pressure of the pressing head, one end of the pressure sensor is fixed on the extending guide rod of the electric cylinder, and the other end of the pressure sensor is fixed on the pressing head.
9. The straightness adjusting device for shaft-like workpieces as claimed in claim 7, wherein the pressure sensor is provided with external threaded screws at both ends, the upper external threaded screw is connected with the extending guide rod of the electric cylinder, and the lower external threaded screw is connected with the top of the pressure head.
10. The straightness adjusting device for shaft workpieces as claimed in claim 9, wherein a connecting through hole for the end of the pressure sensor to penetrate is formed on the upper end face of the pressure head, a square blind hole communicated with the connecting through hole is formed in the middle of the front side face of the pressure head, and a cover plate is detachably fixed on the front side face of the pressure head to cover the square blind hole.
11. The straightness adjustment device for shaft workpieces as set forth in claim 9, wherein the lower end surface of said indenter has an arcuate configuration.
12. The straightness adjusting device for shaft-like workpieces according to claim 9, wherein the guiding mechanism comprises two guiding limiting blocks fixed on the supporting vertical plate and two convex blocks respectively formed on two side surfaces of the pressure head, and the convex blocks are in clearance fit with the corresponding guiding grooves on the guiding limiting blocks.
13. The straightness adjustment device for shaft-like workpieces according to claim 2, wherein a distance between the clamping and positioning mechanism and the straightening mechanism is adjustable.
14. The straightness adjustment device for shaft-like workpieces according to claim 13, wherein the bottom of the supporting vertical plate is fixed on the bottom plate through an adjustable positioning assembly, the adjustable positioning assembly comprises a plurality of optional adjusting through holes formed on the bottom plate, the adjusting through holes are uniformly distributed along the length direction of the shaft-like workpiece, and the supporting vertical plate is fixed in the adjusting through holes of the bottom plate through positioning screws.
15. The apparatus for adjusting the straightness of shaft-like workpieces according to claim 13, wherein the first cylinder is fixed to the bottom plate by a position adjusting assembly, the first cylinder is fixed to a bottom of a lower seat plate, the lower seat plate is fixed to the bottom plate by the position adjusting assembly, a through hole for the cylinder rod to pass through is formed in the lower seat plate, and a square hole is formed in the bottom plate to provide a moving space for the rod connecting plate.
16. A method for adjusting the straightness adjusting means for shaft workpieces according to any one of claims 1 to 15, comprising the steps of:
step 1, adjusting the distance between a clamping and positioning mechanism and the straightening mechanism to ensure that the distance between a straightening force application point and a clamping force application point is matched with the radial runout amount of a shaft workpiece;
step 2, placing one end of the shaft workpiece on a supporting surface, so that the position with larger runout of the shaft workpiece is positioned in the direction opposite to the straightening force;
and 3, selecting a driving mode to enable the clamping force to be larger than the straightening force:
for the shaft workpiece with higher hardness, the first-stage power mechanism and the second-stage power mechanism are simultaneously started and driven, the lower clamping block is upwards applied with force while in the two-stage driving structure, and the upper clamping block is matched to clamp one end of the shaft workpiece;
for the shaft workpiece with lower hardness, the two-stage power mechanism is started, the lower clamping block is upward under the force application of the two-stage power mechanism, and the upper clamping block is matched to clamp one end of the shaft workpiece;
and 4, starting the straightening driving mechanism, and applying a radial straightening force to the large-jumping position of the shaft workpiece by the pressure head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910979711.0A CN112658067B (en) | 2019-10-15 | 2019-10-15 | Shaft workpiece straightness adjustment device and adjustment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910979711.0A CN112658067B (en) | 2019-10-15 | 2019-10-15 | Shaft workpiece straightness adjustment device and adjustment method |
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| US3626732A (en) * | 1969-03-04 | 1971-12-14 | Kieserling & Albrecht | Straightening machine for metallic bars or the like |
| CN201417802Y (en) * | 2009-04-29 | 2010-03-03 | 深圳市吉阳自动化科技有限公司 | Clamping mechanism |
| CN104226745A (en) * | 2014-09-10 | 2014-12-24 | 浙江江丰股份有限公司 | Novel elevator guide rail automatic straightening device |
| CN205732382U (en) * | 2016-06-22 | 2016-11-30 | 中船澄西船舶（广州）有限公司 | Axle correcting tool |
| CN106702109A (en) * | 2016-12-15 | 2017-05-24 | 王小明 | Pre-stress straightening device, quenching equipment and thermal treatment method for long-axis workpieces |
| CN207681214U (en) * | 2017-12-28 | 2018-08-03 | 宜昌奥通汽车维修有限公司 | A kind of vehicle spindle means for correcting |
| CN211100898U (en) * | 2019-10-15 | 2020-07-28 | 中核(天津)科技发展有限公司 | Straightness adjusting device for shaft workpieces |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3626732A (en) * | 1969-03-04 | 1971-12-14 | Kieserling & Albrecht | Straightening machine for metallic bars or the like |
| CN201417802Y (en) * | 2009-04-29 | 2010-03-03 | 深圳市吉阳自动化科技有限公司 | Clamping mechanism |
| CN104226745A (en) * | 2014-09-10 | 2014-12-24 | 浙江江丰股份有限公司 | Novel elevator guide rail automatic straightening device |
| CN205732382U (en) * | 2016-06-22 | 2016-11-30 | 中船澄西船舶（广州）有限公司 | Axle correcting tool |
| CN106702109A (en) * | 2016-12-15 | 2017-05-24 | 王小明 | Pre-stress straightening device, quenching equipment and thermal treatment method for long-axis workpieces |
| CN207681214U (en) * | 2017-12-28 | 2018-08-03 | 宜昌奥通汽车维修有限公司 | A kind of vehicle spindle means for correcting |
| CN211100898U (en) * | 2019-10-15 | 2020-07-28 | 中核(天津)科技发展有限公司 | Straightness adjusting device for shaft workpieces |
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| CN112658067B (en) | 2024-12-03 |
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