CN211071283U - Impact-resistant cold rolling mill chuck box - Google Patents
Impact-resistant cold rolling mill chuck box Download PDFInfo
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- CN211071283U CN211071283U CN201921891246.7U CN201921891246U CN211071283U CN 211071283 U CN211071283 U CN 211071283U CN 201921891246 U CN201921891246 U CN 201921891246U CN 211071283 U CN211071283 U CN 211071283U
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- shifting fork
- box body
- box
- cold rolling
- hydraulic cylinder
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Abstract
The utility model discloses an impact-resistant cold rolling machine chuck case, include: a box body; one end of the hydraulic cylinder is fixedly connected to the box body; the hollow shaft penetrates through the box body, and one end of the hollow shaft is connected with a clamping device for clamping and fixing a workpiece; one end of the shifting fork is rotatably arranged at the bottom of the box body, the other end of the shifting fork is in transmission connection with the output end of the hydraulic cylinder through a fisheye bearing, and a power arm of the shifting fork is longer than a resistance arm of the shifting fork; the shifting fork is in transmission connection with the clamping device and drives the clamping device to perform clamping and opening actions. The chuck box of the impact-resistant cold rolling mill optimizes the fixed position of the shifting fork, and is beneficial to the normal work of the precise gear inside the chuck box; the stress condition of the shifting fork is optimized, the shifting fork can be made of steel with lower price, and the accessory cost of the chuck box is reduced; and the hydraulic cylinder is ensured to be isolated from the torque of the shifting fork, so that the action precision of the hydraulic cylinder is improved and the service life of the hydraulic cylinder is prolonged.
Description
Technical Field
The utility model relates to the technical field of cold pilger mills,
especially, the utility model relates to an impact-resistant cold rolling machine chuck case.
Background
The shifting fork of the chuck box of the existing cold rolling machine adopts an equiarm lever, and the rotation center of the shifting fork is welded on the upper cover of the chuck box; the scheme has high requirements on the mechanical strength and the wear resistance of the shifting fork, the 45# steel cannot meet the working strength requirement of the shifting fork, alloy steel needs to be used, and the manufacturing cost of accessories is high; in addition, the scheme transmits the rolling force to the upper cover of the chuck box, thus aggravating the complexity of the working condition of the chuck box and being not beneficial to the normal work of the precise gear in the chuck box; the shifting fork fixing bracket in the scheme is of a long cantilever structure and has poor rigidity; this kind of scheme shift fork transmits the moment of torsion to the pneumatic cylinder, and it is very big to the pneumatic cylinder steady operation influence, easily leads to the hydro-cylinder piston rod to warp.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide an impact-resistant cold rolling machine chuck box.
In order to solve the above problem, the utility model adopts the following technical scheme:
an impact resistant cold mill jaw housing comprising:
a box body;
one end of the hydraulic cylinder is fixedly connected to the box body;
the hollow shaft penetrates through the box body, and one end of the hollow shaft is connected with a clamping device for clamping and fixing a workpiece; and
one end of the shifting fork is rotatably arranged at the bottom of the box body, the other end of the shifting fork is in transmission connection with the output end of the hydraulic cylinder through a fisheye bearing, and a power arm of the shifting fork is longer than a resistance arm of the shifting fork;
the shifting fork is in transmission connection with the clamping device and drives the clamping device to perform clamping and opening actions.
Preferably, the clamping device comprises at least two inclined plane jaws sleeved on one end of the hollow shaft, the inner side surface of the clamping device is matched with a driving part of the inclined plane jaws, the driving part is provided with a sliding groove in the axial direction of the hollow shaft, and the driving part is in transmission connection with the shifting fork through a sliding block in the sliding groove.
Preferably, the inclined plane jaws are uniformly arranged along the center of the hollow shaft.
Preferably, one end of the shifting fork is connected with the bottom of the box body through a pin shaft.
Preferably, the length ratio of the power arm to the resistance arm is 2: 1.
Compared with the prior art, the utility model discloses a technical effect embodies:
the impact-resistant cold rolling machine chuck box optimizes the fixed position of the shifting fork, does not use the upper cover of the chuck box as a fulcrum, and sets the fulcrum to the bottom of the chuck box body, thereby being beneficial to the normal work of the precise gear in the chuck box; the power arm of the shifting fork is longer than the resistance arm of the shifting fork, so that the labor is saved, the stress condition of the shifting fork is optimized, the shifting fork can be made of steel with lower price, and the accessory cost of the chuck box is reduced; and the hydraulic cylinder is ensured to be isolated from the torque of the shifting fork, so that the action precision of the hydraulic cylinder is improved and the service life of the hydraulic cylinder is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a chuck box of an impact-resistant cold rolling mill provided by an embodiment of the present invention;
fig. 2 is a schematic front view of a chuck box of an impact-resistant cold rolling mill provided by an embodiment of the present invention;
fig. 3 is a schematic top view of a chuck box of an impact-resistant cold rolling mill according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a right-side view structure of a chuck box of an impact-resistant cold rolling mill provided by an embodiment of the present invention;
fig. 5 is a schematic structural view of a power arm and a resistance arm of a chuck box of an impact-resistant cold rolling mill provided by an embodiment of the present invention;
fig. 6 is a schematic sectional structure view of the chuck box of the impact-resistant cold rolling mill along the section a-a according to the embodiment of the present invention.
In the figure, the device comprises a box body 1, a box body 2, a hydraulic cylinder 3, a hollow shaft 4, a shifting fork 5, a fisheye bearing 6, an inclined plane jaw 7, a driving part 8, a sliding groove 9, a sliding block 10, a pin shaft L1, the length of a power arm L2 and the length of a resistance arm.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
The embodiment of the utility model provides an impact-resistant cold rolling machine chuck case, the structure is as shown in figure 1~ 6. An impact-resistant cold rolling machine chuck box comprises a box body 1, a hydraulic cylinder 2, a hollow shaft 3 and a shifting fork 4. One end of the hydraulic cylinder 2 is fixedly connected to the upper cover of the box body 1; the hollow shaft 3 penetrates through the box body 1, and one end of the hollow shaft 3 is connected with a clamping device for clamping and fixing a workpiece; one end of a shifting fork 4 is rotatably arranged at the bottom of the box body 1, the other end of the shifting fork 4 is in transmission connection with the output end of the hydraulic cylinder 2 through a fisheye bearing 5, and a power arm of the shifting fork 4 is longer than a resistance arm of the shifting fork; the shifting fork 4 is in transmission connection with the clamping device to drive the clamping device to perform clamping and opening actions. During operation, the hydraulic cylinder 2 drives the shifting fork 4 to move, and the shifting fork 4 drives the clamping device on the hollow shaft 3 to perform clamping and opening actions, so that clamping and fixing of workpieces are completed.
The impact-resistant cold rolling mill chuck box optimizes the fixed position of the shifting fork 4, does not use the upper cover of the chuck box body 1 as a fulcrum, and sets the fulcrum to the bottom of the chuck box body 1, thereby being beneficial to the normal work of the precise gear in the chuck box; the power arm of the shifting fork 4 is longer than the resistance arm of the shifting fork, so that labor is saved, the stress condition of the shifting fork 4 is optimized, the shifting fork 4 can be made of steel with lower price, and the fitting cost of the chuck box is reduced; and guarantee pneumatic cylinder 2 and 4 moment of torsion isolations of shift fork, improved the action precision and the life of pneumatic cylinder 2.
Preferably, the clamping device of this embodiment includes that three cover establishes the inclined plane jack catch 6 on one end of hollow shaft 3, and three inclined plane jack catch 6 encircles 3 peripheries of hollow shaft and evenly sets up, is 120 contained angles each other, and 6 overcoat of inclined plane jack catch are equipped with medial surface and inclined plane jack catch 6 matched with driving piece 7, and driving piece 7 has seted up spout 8 along 3 axial directions of hollow shaft, and driving piece 7 passes through the slider 9 transmission connection in the spout 8 with shift fork 4. As shown in fig. 4-6, the middle position of the shifting fork 4 is connected with the sliding block 9 through a screw, the hydraulic cylinder 2 moves to drive the shifting fork 4 to move, and further drive the sliding block 9 to move back and forth along the axial direction of the hollow shaft 3 in the sliding groove 8 of the driving part 7, the moving of the sliding block 9 drives the driving part 7 to move back and forth, the inner side surface of the driving part 7 is provided with an inclined surface matched with the inclined surface clamping jaw 6, so that the inclined surface clamping jaw 6 can move up and down along the radial direction of the hollow shaft 3, and further clamping or loosening of a.
Preferably, the inclined jaws 6 are arranged uniformly along the centre of the hollow shaft 3. The uniformly arranged inclined plane clamping jaws can uniformly apply clamping force to the periphery of the workpiece.
Preferably, one end of the shifting fork 4 is connected with the bottom of the box body 1 by a pin shaft 10. The pin shaft type connection has high rigidity and simple structure.
Preferably, the length ratio of the length L2 of the power arm to the length L1 of the resistance arm is 2:1, the design structure is reasonable, the torque isolation of the hydraulic cylinder 2 and the shifting fork 4 is guaranteed while labor is saved, and the action precision and the service life of the hydraulic cylinder 2 are improved.
The present invention is not limited to the above-described specific embodiments, and various modifications and changes are possible. Any modification, equivalent replacement, improvement and the like of the above embodiments according to the technical spirit of the present invention should be included in the scope of the present invention.
Claims (5)
1. An impact resistant cold rolling mill jaw box, comprising:
a box body;
one end of the hydraulic cylinder is fixedly connected to the box body;
the hollow shaft penetrates through the box body, and one end of the hollow shaft is connected with a clamping device for clamping and fixing a workpiece; and
one end of the shifting fork is rotatably arranged at the bottom of the box body, the other end of the shifting fork is in transmission connection with the output end of the hydraulic cylinder through a fisheye bearing, and a power arm of the shifting fork is longer than a resistance arm of the shifting fork;
the shifting fork is in transmission connection with the clamping device and drives the clamping device to perform clamping and opening actions.
2. The chuck box of impact-resistant cold rolling mill according to claim 1, wherein the clamping device comprises at least two inclined plane jaws fitted over one end of the hollow shaft, and a driving member having an inner side surface fitted with the inclined plane jaws, the driving member having a sliding groove formed along an axial direction of the hollow shaft, the driving member being in transmission connection with the shifting fork via a sliding block in the sliding groove.
3. The impact resistant cold rolling mill chuck box according to claim 2, wherein said beveled jaws are uniformly disposed along the center of said hollow shaft.
4. The impact resistant cold rolling mill chuck box according to claim 1, wherein one end of the shifting fork is connected with the bottom of the box body by a pin shaft.
5. The jaw box of an impact resistant cold rolling mill of any one of claims 1 to 4, wherein the power arm to resistance arm length ratio is 2: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921891246.7U CN211071283U (en) | 2019-11-05 | 2019-11-05 | Impact-resistant cold rolling mill chuck box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921891246.7U CN211071283U (en) | 2019-11-05 | 2019-11-05 | Impact-resistant cold rolling mill chuck box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211071283U true CN211071283U (en) | 2020-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921891246.7U Active CN211071283U (en) | 2019-11-05 | 2019-11-05 | Impact-resistant cold rolling mill chuck box |
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| CN (1) | CN211071283U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110756596A (en) * | 2019-11-05 | 2020-02-07 | 浙江辛子精工机械有限公司 | Impact-resistant cold rolling mill chuck box |
-
2019
- 2019-11-05 CN CN201921891246.7U patent/CN211071283U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110756596A (en) * | 2019-11-05 | 2020-02-07 | 浙江辛子精工机械有限公司 | Impact-resistant cold rolling mill chuck box |
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