CN220807014U - Quick-change clamp for machining spiral trajectory of steering gear nut - Google Patents
Quick-change clamp for machining spiral trajectory of steering gear nut Download PDFInfo
- Publication number
- CN220807014U CN220807014U CN202322396452.3U CN202322396452U CN220807014U CN 220807014 U CN220807014 U CN 220807014U CN 202322396452 U CN202322396452 U CN 202322396452U CN 220807014 U CN220807014 U CN 220807014U
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- liner
- sleeve
- screw
- clamp
- clamping
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- 238000003754 machining Methods 0.000 title claims abstract description 14
- 239000010730 cutting oil Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 14
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 230000008602 contraction Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Abstract
The utility model relates to a quick-change clamp, in particular to a quick-change clamp for machining a spiral trajectory of a steering gear nut. The quick-change clamp comprises a locking device, a sleeve and a clamping liner, wherein the sleeve and the clamping liner are respectively in cup-shaped, the clamping liner is inserted into the sleeve, and the middle upper part of the circumferential surface of the clamping liner and the middle upper part of the inner wall of the sleeve are respectively conical; the center of the bottom of the clamping liner is provided with a locking device. The quick-change clamp can enable the clamp liner to shrink inwards, and because the clamp liner synchronously shrinks inwards along the radial direction, the whole circumferential surface of the workpiece is clamped, namely the inner wall of the clamp liner and the whole circumferential surface of the workpiece are stressed, and even if the inner wall of the clamp liner is worn, the inner wall of the clamp liner is synchronously worn, so that the position of the workpiece can be always kept in the process of clamping the workpiece, and the workpiece is not easy to deviate in processing; the gear is not contacted with the gear of the workpiece, so that the gear on the circumferential surface of the workpiece is not easy to wear, and normal transmission can be ensured; the problem that the existing clamp is easy to cause machining deviation and easy to influence transmission due to stress is solved.
Description
Technical Field
The utility model relates to a quick-change clamp, in particular to a quick-change clamp for machining a spiral trajectory of a steering gear nut.
Background
In the field of automobile industry, a power steering gear is connected with a steering wheel and a tire, and the steering of an automobile is realized during running through the power steering gear. The power steering gear comprises a nut, a screw rod and a steel ball, wherein the nut and the screw rod are respectively provided with a spiral trajectory, the trajectories of the nut and the screw rod are separated by the steel ball, and the screw rod realizes the displacement of the nut in the axial direction through the rotation of the spiral trajectory and the steel ball.
The nut needs to be clamped and fixed in the process of milling the spiral trajectory. The patent application with the publication number of CN207014042U discloses a nut turning and grinding roller way clamp, which comprises a clamp body, wherein one side of the clamp body is connected with a taper shank, a positioning through hole is formed in the clamp body, a positioning column is arranged in the positioning through hole, a hexagon screw is arranged on the clamp body above the positioning column, a screw mounting hole is formed in the clamp body, and the clamp body is fixed onto a connecting plate through a screw. The utility model has the advantages of simple structure, convenient use, no damage to the appearance of the nut and more beautiful parts; the dimensional accuracy of the nut raceway is greatly improved, and the rejection rate is reduced; meanwhile, the processing difficulty of operators is reduced, the production efficiency is improved, and the production cost is reduced.
When the fixture is used for fixing the nut, the acting force of the fixture on the nut is downward when the fixing nut is screwed by the hexagonal screw, the stress point of the fixture on the nut is teeth on the outer circle of the nut, which are contacted with the positioning column, and the bottom of the fixture body is extruded with the bottom of the nut under the action of the downward pressure of the hexagonal screw. The nut and the clamp inevitably wear during the processing process, and particularly the wear at the stress point is the greatest. When the teeth on the outer circle of the nut are worn, so that transmission is affected; when vibrating between anchor clamps body bottom and the nut bottom, can lead to anchor clamps body bottom wearing and tearing in the long-term use, can lead to the nut to shift downwards at the central axis of centre gripping in-process nut after the anchor clamps body bottom wearing and tearing, easily lead to the nut to process the degree of depth of spiral trajectory and can appear the deviation when spiral trajectory. It is therefore necessary to design a quick change jig for steering gear nut processing spiral trajectory to solve the above-mentioned problems.
Disclosure of Invention
The utility model aims at: aiming at the defects of the prior art, the quick-change clamp for processing the spiral trajectory of the steering gear nut, which is used for solving the problems that the existing clamp is easy to cause processing deviation and influence transmission due to stress, is not easy to cause deviation in the processing process and is not easy to influence transmission, is provided.
The technical scheme of the utility model is as follows:
A quick change anchor clamps for steering gear nut processing spiral trajectory, is the sleeve and presss from both sides courage, its characterized in that is cup dress including locking device and respectively: the sleeve is internally inserted with a clamping liner, and the middle upper part of the circumferential surface of the clamping liner and the middle upper part of the inner wall of the sleeve are respectively conical which can press the clamping liner inwards when the clamping liner and the sleeve slide relatively; the center of the bottom of the clamping liner is provided with a locking device for pushing the clamping liner and the sleeve to slide relatively.
The locking device consists of a mandrel, a screw and a supporting ring, wherein the screw is arranged on the mandrel through a locking nut, a limit shoulder is arranged at the middle upper part of the screw, and the supporting ring is sleeved on the screw above the limit shoulder; the screw rod and the mandrel respectively penetrate through the liner and extend to the outer side of the sleeve, and the screw rod is in threaded connection with the sleeve; the top end of the mandrel is provided with a screw cap which is respectively in abutting connection with the bottom of the inner wall of the clamping liner and the screw rod; the supporting ring is in abutting connection with the end face of the bottom of the outer wall of the clamping liner.
The middle upper part of the mandrel is square, and the middle upper part of the mandrel is in limit connection with the screw rod so that the mandrel can drive the screw rod to rotate when the mandrel rotates.
The end face of the sleeve is provided with a limiting block through a fixing bolt, the limiting block is L-shaped, and the top end of the limiting block extends to the upper part of the clamping liner.
The circumference of the clamping liner is uniformly provided with axial expansion joints, and the bottom end head of each axial expansion joint is provided with a crack-stopping hole.
Guide holes are uniformly distributed at the bottom of the clamping liner, supporting guide rods are arranged at the bottom of the sleeve in a threaded manner, and extend into the clamping liner through the guide holes.
Cutting oil channels are respectively arranged at the bottoms of the liner and the sleeve between the supporting guide rods.
The utility model has the beneficial effects that:
The quick-change clamp for the steering gear nut processing spiral trajectory drives the clamping liner and the sleeve to slide relatively through the locking device, so that the inner wall of the clamping liner can shrink inwards in the radial direction to clamp a nut (workpiece), and the inner wall of the clamping liner synchronously shrinks inwards in the radial direction to clamp the workpiece; the workpiece is clamped on the circumferential surface of the workpiece and is not contacted with the teeth on the circumferential surface of the workpiece, so that the teeth on the circumferential surface of the workpiece are not easy to wear, and normal transmission can be ensured; the problem that the existing clamp is easy to cause machining deviation and easy to influence transmission due to stress is solved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the structure of the locking device of the present utility model;
FIG. 3 is a schematic view of the structure in the direction A-A in FIG. 2;
FIG. 4 is a schematic view of the structure of the screw of the present utility model;
FIG. 5 is a schematic view of the structure of the sleeve of the present utility model;
FIG. 6 is a schematic top view of the sleeve of the present utility model;
FIG. 7 is a schematic view of a bladder of the present utility model;
Fig. 8 is a schematic top view of the inventive bladder.
In the figure: 1. sleeve, 2, double-layered courage, 3, dabber, 4, screw rod, 5, backing ring, 6, lock nut, 7, spacing circular bead, 8, nut, 9, stopper, 10, axial expansion joint, 11, crack arrest hole, 12, guiding hole, 13, support guide arm, 14, cutting oil passageway, 15, work piece.
Detailed Description
This a quick change anchor clamps for steering gear nut processing spiral trajectory, including locking device and be the sleeve 1 and the clamp courage 2 of cup dress respectively, insert in sleeve 1 and be equipped with clamp courage 2, the circumference face middle upper portion of clamp courage 2 is the circular cone form, the inner wall middle upper portion of sleeve 1 is the circular cone form, when clamp courage 2 and sleeve 1 relative slip, because the inner wall of sleeve 1 is by sleeve 1 port to sleeve 1 bottom sleeve 1's internal diameter taper, simultaneously because the circumference face of clamp courage 2 is by clamp courage 2's bottom to clamp courage 2's port clamp courage 2 external diameter taper, can inwards extrude clamp courage 2 through sleeve 1, thereby force clamp courage 2's port inwards shrink, clamp courage 2 port through the shrink is fixed with the work piece centre gripping. Because clamp courage 2 centre gripping, when fixed work piece, carry out the centre gripping fixed to the work piece through the mode of pressing from both sides the inward contraction of courage 2 port, press from both sides the stress point of courage 2 and work piece and be the circle that presss from both sides the inner wall of courage 2 port and the whole excircle of work piece, press from both sides the port inner wall synchronous wear of courage 2 when wearing and tearing, can not change the position of pressing from both sides courage 2 central axis, from both sides courage 2 and only need press from both sides courage 2 more inward contraction and can the centre axis of work piece centre gripping, and can not change the position of cartridge in pressing from both sides courage 2 when wearing and tearing work piece processing, and then be difficult for appearing the deviation is guaranteed to the work piece. Because the clamping liner 2 clamps and fixes the end circumference surface of the workpiece, the clamping liner 2 cannot contact with teeth on the circumference of the workpiece, and the teeth on the circumference of the workpiece are not easy to abrade, so that normal transmission can be ensured. The center of the bottom of the clamping liner 2 is provided with a locking device for pushing the clamping liner 2 to slide relative to the sleeve 1, and when the locking device drives the clamping liner 2 to slide relative to the sleeve 1, the sleeve 1 can inwards squeeze the clamping liner 2 so as to force the clamping liner 2 to clamp a workpiece and fix the workpiece.
The locking device consists of a mandrel 3, a screw 4 and a supporting ring 5, the screw 4 is sleeved on the mandrel 3, a locking nut 6 is arranged at the end of the mandrel 3 below the screw 4 in a threaded manner, and the locking nut 6 is in abutting connection with the screw 4. The lock nut 6 has the function of limiting the relative position of the mandrel 3 and the bottom end of the screw 4 through the lock nut 6; on the other hand, the spindle 3 can be driven to move downwards by the lock nut 6 when the screw 4 moves downwards. The middle upper part of the mandrel 3 is square, the top end face of the screw 4 is provided with a square hole, the square part of the middle upper part of the mandrel 3 is connected with the square hole of the screw 4 in an inserting way, and then the middle upper part of the mandrel 3 is in limit connection with the screw 4, so that the screw 4 cannot rotate relative to the mandrel 3 through shape limitation, and the mandrel 3 can drive the screw 4 to rotate when the mandrel 3 rotates. The middle upper part of the screw 4 is provided with a limit shoulder 7, and the screw 4 above the limit shoulder 7 is sleeved with a supporting ring 5. The screw 4 and the mandrel 3 respectively penetrate through the liner 2 to extend to the outer side of the sleeve 1, and the screw 4 is in threaded connection with the sleeve 1; the top end of the mandrel 3 is provided with a screw cap 8, and the screw cap 8 is respectively in abutting connection with the bottom of the inner wall of the liner 2 and the screw 4; the supporting ring 5 is in abutting connection with the end face of the bottom of the outer wall of the clamping liner 2. The function of the screw 4 is that the screw 4 pushes the screw 4 to move relative to the sleeve 1 when the screw 4 rotates through threads between the screw 4 and the sleeve 1, and the screw 4 drives the mandrel 3 to move through the lock nut 6 in the process of moving the screw 4 to the outer side of the sleeve 1, so that the mandrel 3 can drive the liner 2 to move into the sleeve 1 through the nut 8, the sleeve 1 can squeeze the liner 2, and the port of the liner 2 is promoted to shrink inwards; in the process that the screw 4 moves to the outer side of the sleeve 1, the screw 4 drives the supporting ring 5 to move through the limiting shoulder 7, and therefore the supporting ring 5 pushes the liner clamping 2 to reset.
The end face of the sleeve 1 is provided with a limiting block 9 through a fixing bolt, the limiting block 9 is L-shaped, and the top end of the limiting block 9 extends to the upper part of the liner 2. The limiting block 9 is used for limiting the movement of the liner 2 to the outer side of the outer sleeve 1, and preventing the liner 2 from being separated from the sleeve 1.
The axial expansion joints 10 are uniformly distributed on the circumference of the clamp liner 2, so that the acting force required by inward contraction of the clamp liner 2 is reduced through the axial expansion joints 10, and the acting force required by pushing the clamp liner 2 to move is further reduced, so that the acting force required by screwing the mandrel 3 is reduced, and the workpiece is conveniently locked by pushing the clamp liner 2 to move; on the other hand, the inward contraction distance of the clamping liner 2 can be effectively increased through the axial expansion joint 10, so that the diameter range of a workpiece clamped by the clamping liner 2 can be effectively enlarged, and the universality of the clamping liner 2 is enhanced; and the clamp liner 2 can have more abrasion allowance, and the workpiece can be clamped after the port of the clamp liner 2 is worn. The bottom end of the axial expansion joint 10 is provided with a crack stopper hole 11, so that stress is reduced through the crack stopper hole 11 and concentrated at the bottom end of the axial expansion joint 10, and the clamp liner 2 is prevented from tearing downwards when the clamp liner 2 is contracted inwards.
Guide holes 12 are uniformly distributed at the bottom of the clamping liner 2, a support guide rod 13 is arranged at the bottom of the sleeve 1 in a threaded manner, and the support guide rod 13 penetrates through the guide holes 12 and extends into the clamping liner 2. The supporting guide rod 13 has the function of limiting the liner clamping 2 through the supporting guide rod 13 to prevent the liner clamping 2 from shifting in the moving process; on the other hand, the insertion depth of the workpiece can be controlled by the supporting guide rod 13, and the workpiece can be conveniently positioned.
Cutting oil channels 14 are respectively arranged at the bottoms of the clamping liner 2 and the sleeve 1 between the supporting guide rods 13, so that cutting oil can sequentially pass through the sleeve 1 and the clamping liner 2 to enter a workpiece through the cutting oil channels 14, and the workpiece can be cooled and lubricated through the cutting oil in the workpiece machining process.
When the quick-change clamp for processing the spiral trajectory by the steering gear nut clamps and fixes a workpiece, the end head of the workpiece is inserted into the port of the clamp liner 2 until the workpiece abuts against the support guide rod 13 in the clamp liner 2. After the workpiece is inserted in place, the nut 8 is rotated by inserting the nut 8 at the top of the mandrel 3 through the socket wrench, the mandrel 3 is driven to rotate, the screw 4 is driven to rotate, the sleeve 1 and the machine head of the lathe are relatively fixed and cannot rotate in the rotation process of the screw 4, and the screw 4 and the sleeve 1 are further relatively rotated. The screw 4 and the sleeve 1 move outwards through the threaded screw 4 between the screw 4 and the sleeve 1 in the relative rotation process, the clamping liner 2 is driven to move inwards of the sleeve 1 through the lock nut 6, the mandrel 3 and the nut 8 in sequence in the movement process of the screw 4, the sleeve 1 extrudes the clamping liner 2 inwards in the movement process of the clamping liner 2, the port of the clamping liner 2 is contracted inwards to clamp a workpiece, and the workpiece is fixed. After the workpiece is fixed, the screw 4 is self-locked with the sleeve 1 through threads, so that the clamping of the liner to the workpiece is maintained.
The quick-change clamp for processing the spiral trajectory of the steering gear nut drives the clamping liner 2 and the sleeve 1 to slide relatively through the locking device, so that the inner wall of the clamping liner 2 can shrink inwards in the radial direction to clamp a workpiece, and as the inner wall of the clamping liner 2 shrinks inwards synchronously in the radial direction, the whole circumferential surface of the workpiece is clamped when the workpiece is clamped, namely the inner wall of the clamping liner 2 and the whole circumferential surface of the workpiece are stressed, and even if the inner wall of the clamping liner is worn, the inner wall of the clamping liner is worn synchronously, thereby the position of the central axis of the workpiece can be kept all the time in the process of clamping the workpiece, and the workpiece is not easy to deviate when the workpiece is processed; the workpiece is clamped on the circumferential surface of the workpiece and is not contacted with the teeth on the circumferential surface of the workpiece, so that the teeth on the circumferential surface of the workpiece are not easy to wear, and normal transmission can be ensured; the problem that the existing clamp is easy to cause machining deviation and easy to influence transmission due to stress is solved.
Claims (7)
1. A quick change anchor clamps for steering gear nut processing spiral trajectory, is sleeve (1) and double-layered courage (2) that cup was adorned including locking device and respectively, its characterized in that: the sleeve (1) is internally provided with the clamping liner (2), and the middle upper part of the circumferential surface of the clamping liner (2) and the middle upper part of the inner wall of the sleeve (1) are respectively conical, so that the clamping liner (2) can be inwards extruded when the clamping liner (2) and the sleeve (1) slide relatively; the center of the bottom of the clamping liner (2) is provided with a locking device for pushing the clamping liner (2) and the sleeve (1) to slide relatively.
2. A quick change clamp for steering gear nut machining spiral trajectory as claimed in claim 1, wherein: the locking device consists of a mandrel (3), a screw (4) and a supporting ring (5), wherein the screw (4) is arranged on the mandrel (3) through a locking nut (6), a limit shoulder (7) is arranged at the middle upper part of the screw (4), and the supporting ring (5) is sleeved on the screw (4) above the limit shoulder (7); the screw (4) and the mandrel (3) respectively penetrate through the liner (2) to extend to the outer side of the sleeve (1), and the screw (4) is in threaded connection with the sleeve (1); a screw cap (8) is arranged at the top end of the mandrel (3), and the screw cap (8) is respectively in abutting connection with the bottom of the inner wall of the liner (2) and the screw rod (4); the supporting ring (5) is in abutting connection with the end face of the bottom of the outer wall of the clamping liner (2).
3. A quick change clamp for steering gear nut machining spiral trajectory as claimed in claim 2, wherein: the middle upper part of the mandrel (3) is square, and the middle upper part of the mandrel (3) is in limit connection with the screw (4) so that the mandrel (3) can drive the screw (4) to rotate when the mandrel (3) rotates.
4. A quick change clamp for steering gear nut machining spiral trajectory as claimed in claim 1, wherein: the end face of the sleeve (1) is provided with a limiting block (9) through a fixing bolt, the limiting block (9) is L-shaped, and the top end of the limiting block (9) extends to the upper part of the liner (2).
5. The quick change clamp for steering gear nut machining spiral trajectory of claim 4, wherein: the circumference of the clamping liner (2) is uniformly provided with axial expansion joints (10), and the bottom end of the axial expansion joints (10) is provided with crack-stopping holes (11).
6. The quick change clamp for steering gear nut machining spiral trajectory of claim 4, wherein: guide holes (12) are uniformly distributed at the bottom of the clamping liner (2), a support guide rod (13) is installed at the bottom of the sleeve (1) in a threaded manner, and the support guide rod (13) penetrates through the guide holes (12) and extends into the clamping liner (2).
7. The quick change clamp for steering gear nut machining spiral trajectory of claim 6, wherein: cutting oil channels (14) are respectively arranged at the bottoms of the liner (2) and the sleeve (1) between the supporting guide rods (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322396452.3U CN220807014U (en) | 2023-09-05 | 2023-09-05 | Quick-change clamp for machining spiral trajectory of steering gear nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322396452.3U CN220807014U (en) | 2023-09-05 | 2023-09-05 | Quick-change clamp for machining spiral trajectory of steering gear nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220807014U true CN220807014U (en) | 2024-04-19 |
Family
ID=90673825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322396452.3U Active CN220807014U (en) | 2023-09-05 | 2023-09-05 | Quick-change clamp for machining spiral trajectory of steering gear nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220807014U (en) |
-
2023
- 2023-09-05 CN CN202322396452.3U patent/CN220807014U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |