CN211387838U - Machining clamp for brake bottom plate of automobile brake - Google Patents
Machining clamp for brake bottom plate of automobile brake Download PDFInfo
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- CN211387838U CN211387838U CN201922109028.XU CN201922109028U CN211387838U CN 211387838 U CN211387838 U CN 211387838U CN 201922109028 U CN201922109028 U CN 201922109028U CN 211387838 U CN211387838 U CN 211387838U
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Abstract
The utility model discloses a processing clamp of an automobile brake braking bottom plate, which comprises a clamp body and a workpiece clamped and fixed on the clamp body; two sides of the fixture body are symmetrically provided with a clamping and positioning component; each clamping and positioning assembly comprises a positioning guide sleeve, a positioning disc, lever hydraulic cylinders and positioning support pins, wherein the positioning guide sleeve is positioned and installed in a preformed hole of the fixture body, the positioning disc is slidably arranged in the positioning guide sleeve, the lever hydraulic cylinders are uniformly distributed at four corners of the periphery of the positioning guide sleeve, and the positioning support pins are uniformly distributed between the positioning guide sleeve and the lever hydraulic cylinders according to the shape of a workpiece; the lower part of the positioning guide sleeve is provided with an air cylinder; a piston rod of the air cylinder is fixedly connected with the positioning disc through a positioning screw; the upper top surface of the fixture body is also fixedly provided with two positioning blocks; a positioning adjusting screw is arranged on the positioning block in a penetrating manner; the utility model discloses a processing anchor clamps of car brake backing plate, anchor clamps location is reliable, press from both sides tight firm, loading and unloading convenience, and the machining precision is high.
Description
Technical Field
The utility model relates to an automobile brake adds clamping apparatus, concretely relates to automobile brake braking bottom plate's adds clamping apparatus belongs to automobile brake processing equipment technical field.
Background
The automobile brake is a safety part on an automobile, the brake bottom plate is a key part of the brake, and the requirement on machining precision is high, particularly the requirement on position precision and shape precision of a middle positioning hole, two shoe plate shaft pin holes at one end and a cam shaft hole at the other end is high. In the prior similar clamp design, the middle hole of the brake bottom plate is mostly used for positioning, and the middle hole, the shoe pin hole, the camshaft hole and the mounting hole are processed in different processes, so that certain positioning and mounting errors exist, the error is large, and the defective rate is high. Therefore, in order to solve the above problems, it is necessary to design a machining fixture for an automobile brake backing plate, which has reliable positioning, firm clamping, convenient assembly and disassembly, and high machining precision.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an automobile brake braking bottom plate's adds clamping apparatus has realized that the camshaft hole of two shoe axle pinholes and the other end of intervalve and one side is processed in process one, has eliminated positioning error, has improved the machining precision of product, has also improved production efficiency simultaneously.
The utility model discloses a processing clamp of an automobile brake braking bottom plate, which comprises a clamp body and a workpiece clamped and fixed on the clamp body; two sides of the fixture body are symmetrically provided with a clamping and positioning component;
each clamping and positioning assembly comprises a positioning guide sleeve, a positioning disc, lever hydraulic cylinders, an oil supply system and positioning support pins, wherein the positioning guide sleeve is positioned and installed in a preformed hole of the fixture body, the positioning disc is slidably arranged in the positioning guide sleeve, the lever hydraulic cylinders are uniformly distributed at four corners of the periphery of the positioning guide sleeve, the oil supply system is connected with the lever hydraulic cylinders, and the positioning support pins are uniformly distributed between the positioning guide sleeve and the lever hydraulic cylinders according to the shape of a workpiece;
the positioning guide sleeve is fixed on the clamp body through a screw; the lower part of the positioning guide sleeve is provided with an air cylinder; the air cylinder is fixedly connected with the clamp body through an air cylinder fixing seat; a piston rod of the air cylinder is fixedly connected with the positioning disc through a positioning screw; the air cylinder is connected with a pneumatic manual reversing valve through an air path pipeline and an air path tee;
the upper top surface of the fixture body is also fixedly provided with two positioning blocks; a positioning adjusting screw is arranged on the positioning block in a penetrating manner; and the rear end of the positioning adjusting screw is in threaded connection with an adjusting nut.
Furthermore, support legs are fixed at four corners of the lower bottom surface of the fixture body; the oil supply system is distributed on the lower bottom surface of the fixture body; the oil supply system comprises an oil circuit board connected with an external hydraulic station, an oil distributor connected with the oil circuit board, and a plurality of oil circuit pipelines connected with the oil distributor through oil pipe joints; the other end of each oil pipeline is respectively connected with a lever hydraulic cylinder, an oil circuit in the clamp is connected with an external hydraulic station, and a hydraulic control system is connected with a machine tool interface.
Furthermore, a reversing valve fixing seat is fixedly connected to one side, away from the oil circuit board, of the clamp body; the pneumatic manual reversing valve is fixedly arranged above the reversing valve fixing seat.
Furthermore, a positioning clamping groove for clamping a workpiece is formed between the positioning adjusting screws of the two positioning blocks.
Furthermore, the head of the positioning adjusting screw is of a cone frustum-shaped structure, a generatrix of a cone surface of the head of the positioning adjusting screw is movably contacted with the workpiece, and the adjustment adjusting nut can enable the generatrix of the cone surface of the head of the positioning adjusting screw to be contacted with the workpiece, so that the workpiece cannot rotate in the circumferential direction of the positioning disc, the degree of freedom of the workpiece in the circumferential direction is limited, and the workpiece is positioned firmly.
Further, the cylinder fixing seat is fixedly connected with the clamp body through a fastening screw.
In a preferred embodiment, a labyrinth sealing structure is formed between the positioning disc and the positioning guide sleeve to prevent cutting chips from entering between the positioning disc and the positioning guide sleeve and facilitate the sliding of the positioning disc.
Compared with the prior art, the utility model discloses a processing anchor clamps of car brake bottom plate, the whole set of anchor clamps are equipped with two stations, can the clamping two work pieces simultaneously; the positioning disc is jacked up during positioning and retreated during machining, so that holes in the workpiece and other holes are machined in one sequence, the machining precision of the workpiece is guaranteed, hydraulic clamping is adopted, the labor intensity is reduced, the tool changing times are reduced, the production efficiency is improved, and an oil way in the clamp is connected with an external hydraulic station; the pneumatic and manual reversing valve is adopted for reversing and ventilating, so that the operation is simple and rapid; the clamp has the advantages of reliable positioning, firm clamping, convenient assembly and disassembly and high processing precision, and obtains good economic benefit in practical application.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic top view of the present invention.
Fig. 3 is a front view structure diagram of the present invention.
Fig. 4 is a left side view structure diagram of the present invention.
Fig. 5 is a schematic bottom view of the present invention.
Fig. 6 is a schematic sectional view of the structure of the utility model A-A.
The components in the drawings are labeled as: 1-a workpiece, 2-a fixture body, 3-a positioning block, 4-a positioning adjusting screw, 5-an adjusting nut, 6-a lever hydraulic cylinder, 7-a positioning support pin, 8-a positioning disc, 9-a positioning guide sleeve, 10-a support leg, 11-a pneumatic manual reversing valve, 12-an air passage pipeline, 13-a positioning screw, 14-an oil passage pipeline, 15-an oil pipe joint, 16-an oil separator, 17-an oil passage board, 18-an air cylinder fixing seat, 19-a reversing valve fixing seat, 20-an air passage tee joint, 21-an air cylinder, 22-a fastening screw and 23-a hydraulic cylinder pressing plate.
Detailed Description
As shown in fig. 1 to 6, the clamp for processing the brake bottom plate of the automobile brake of the present invention comprises a clamp body 2 and a workpiece 1 clamped and fixed on the clamp body 2; two sides of the fixture body 2 are symmetrically provided with a clamping and positioning component;
each clamping and positioning assembly comprises a positioning guide sleeve 9 which is positioned and installed in a preformed hole of the fixture body 2, a positioning disc 8 which is slidably arranged in the positioning guide sleeve 9, lever hydraulic cylinders 6 which are uniformly distributed at four corners of the periphery of the positioning guide sleeve 9, an oil supply system connected with the lever hydraulic cylinders 6, and positioning support pins 7 which are uniformly distributed between the positioning guide sleeve 9 and the lever hydraulic cylinders 6 according to the shape of the workpiece 1;
the positioning guide sleeve 9 is fixed on the clamp body 2 through a screw; the lower part of the positioning guide sleeve 9 is provided with an air cylinder 21; the air cylinder 21 is fixedly connected with the clamp body 2 through an air cylinder fixing seat 18; a piston rod of the air cylinder 21 is fixedly connected with the positioning disc 8 through a positioning screw 13; the air cylinder 21 is connected with the pneumatic manual reversing valve 11 through an air path pipeline 12 and an air path tee 20;
the upper top surface of the fixture body 2 is also fixedly provided with two positioning blocks 3; a positioning adjusting screw 4 is arranged on the positioning block 3 in a penetrating manner; the rear end of the positioning adjusting screw 4 is in threaded connection with an adjusting nut 5.
Four corners of the lower bottom surface of the fixture body 2 are fixed with support legs 10; the oil supply system is distributed on the lower bottom surface of the fixture body 2; the oil supply system comprises an oil path plate 17 connected with an external hydraulic station, an oil separator 16 connected with the oil path plate 17, and a plurality of oil path pipelines 14 connected with the oil separator 16 through oil pipe joints 15; the other end of each oil pipeline 14 is respectively connected with a lever hydraulic cylinder 6.
A reversing valve fixing seat 19 is fixedly connected to one side, away from the oil circuit board 17, of the fixture body 2; the pneumatic manual reversing valve 11 is fixedly arranged above the reversing valve fixing seat 19.
A positioning slot (not shown) for clamping the workpiece 1 is formed between the positioning adjusting screws 4 of the two positioning blocks 3.
The head of the positioning and adjusting screw 4 is in a cone frustum-shaped structure, and a generatrix of a cone surface of the head of the positioning and adjusting screw is movably contacted with the workpiece 1.
The cylinder fixing seat 18 is fixedly connected with the clamp body 2 through a fastening screw 22.
A labyrinth seal structure is formed between the positioning disc 8 and the positioning guide sleeve 9.
The utility model discloses a processing clamp of automobile brake braking bottom plate, the whole set of clamp is provided with two stations, and can carry out positioning clamping and processing on two workpieces 1; the fixture body 2 is provided with two preformed holes, a positioning guide sleeve 9 is positioned and installed in each preformed hole and fixed on the fixture body 2 through screws, the positioning disc 8 can slide up and down in the positioning guide sleeve 9, the lower part of the positioning guide sleeve 9 is provided with an air cylinder 21 fixed on an air cylinder fixing seat, the air cylinder fixing seat 18 is connected with the fixture body 2 through a fastening screw 22, and a piston rod of the air cylinder 21 is connected with the positioning disc 8 and fixed through a positioning screw 13; when the air is ventilated, a piston rod of the air cylinder 21 is pushed up, and the pneumatic manual reversing valve 11 is reversed and falls; a plurality of positioning support pins 7 are arranged on the fixture body 2 and are used for supporting the workpiece 1; the fixture body 2 is also provided with a positioning block 3, a positioning adjusting screw 4 is mounted on the positioning block 3, the head of the positioning adjusting screw 4 is in a truncated cone structure, and an adjusting nut 5 of the positioning adjusting screw 4 is adjusted to enable a head conical surface bus of the positioning adjusting screw 4 to be in contact with the workpiece 1, so that the workpiece 1 is ensured not to rotate in the circumferential direction of a positioning disc 8, the degree of freedom of the workpiece 1 in the circumferential direction is limited, and the workpiece 1 is firmly positioned;
the pneumatic-hydraulic clamp is adopted for clamping in a hydraulic mode, the positioning disc 8 used for positioning the middle hole in the brake bottom plate is pneumatically positioned after the positioning disc 8 in the middle is positioned, so that the middle positioning hole is conveniently machined, the middle positioning hole, the two shoe shaft pin holes on one side, the camshaft hole on the other end and the bottom plate mounting holes around the middle positioning hole are machined in one process, and the good effect is achieved in practical application; a simple labyrinth seal is adopted between the positioning disc and the positioning guide sleeve to prevent cutting scraps from entering between the positioning disc and the positioning guide sleeve, so that the sliding of the positioning disc is facilitated.
The utility model discloses an automobile brake braking bottom plate's adds clamping apparatus's action process as follows:
1) initially, a piston rod of the air cylinder 21 is ejected, the positioning disc 8 is ejected under the action of the air cylinder 21, the piston rod of the lever hydraulic cylinder 6 retracts at the uppermost end, and the hydraulic cylinder pressure plate 23 is lifted;
2) placing a workpiece 1 on a positioning support pin 7 on a fixture body 2, sleeving a middle positioning hole (a middle hole) of the workpiece 1 on the excircle of a positioning disc 8, placing two side surfaces of one end of the workpiece 1 in a positioning clamping groove formed between two adjusted positioning adjusting screws 4, and finishing positioning the workpiece 1;
3) starting a machining program, enabling the lever hydraulic cylinder 6 to act, enabling a hydraulic cylinder pressure plate 23 to press downwards to tightly press the workpiece 1, shifting a handle of the pneumatic manual reversing valve 11, enabling the air cylinder 21 to act, enabling a piston rod of the air cylinder 21 to retract, enabling the positioning disc 8 to withdraw from the workpiece 1 and keep a certain distance from the workpiece 1, and facilitating machining of a positioning hole in the middle of the workpiece 1;
4) after the machining is finished, the lever hydraulic cylinder 6 acts, the hydraulic cylinder pressure plate 23 is lifted, the workpiece 1 is loosened, the workpiece 1 is taken out, the handle of the pneumatic manual reversing valve 11 is poked, the positioning disc 8 is jacked up, and the next round of installation and machining of two workpieces is carried out.
The above-mentioned embodiment is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention are included in the claims of the present invention.
Claims (7)
1. A machining clamp for a brake bottom plate of an automobile brake comprises a clamp body and a workpiece clamped and fixed on the clamp body; the method is characterized in that: two sides of the fixture body are symmetrically provided with a clamping and positioning component;
each clamping and positioning assembly comprises a positioning guide sleeve, a positioning disc, lever hydraulic cylinders, an oil supply system and positioning support pins, wherein the positioning guide sleeve is positioned and installed in a preformed hole of the fixture body, the positioning disc is slidably arranged in the positioning guide sleeve, the lever hydraulic cylinders are uniformly distributed at four corners of the periphery of the positioning guide sleeve, the oil supply system is connected with the lever hydraulic cylinders, and the positioning support pins are uniformly distributed between the positioning guide sleeve and the lever hydraulic cylinders according to the shape of a workpiece;
the positioning guide sleeve is fixed on the clamp body through a screw; the lower part of the positioning guide sleeve is provided with an air cylinder; the air cylinder is fixedly connected with the clamp body through an air cylinder fixing seat; a piston rod of the air cylinder is fixedly connected with the positioning disc through a positioning screw; the air cylinder is connected with a pneumatic manual reversing valve through an air path pipeline and an air path tee;
the upper top surface of the fixture body is also fixedly provided with two positioning blocks; a positioning adjusting screw is arranged on the positioning block in a penetrating manner; and the rear end of the positioning adjusting screw is in threaded connection with an adjusting nut.
2. The machining jig for the brake spider of the automobile brake according to claim 1, wherein: four corners of the lower bottom surface of the fixture body are fixed with support legs; the oil supply system is distributed on the lower bottom surface of the fixture body; the oil supply system comprises an oil circuit board connected with an external hydraulic station, an oil distributor connected with the oil circuit board, and a plurality of oil circuit pipelines connected with the oil distributor through oil pipe joints; and the other end of each oil pipeline is respectively connected with a lever hydraulic cylinder.
3. The machining jig for the brake spider of the automobile brake according to claim 1, wherein: one side of the clamp body, which is far away from the oil circuit board, is fixedly connected with a reversing valve fixing seat; the pneumatic manual reversing valve is fixedly arranged above the reversing valve fixing seat.
4. The machining jig for the brake spider of the automobile brake according to claim 1, wherein: and a positioning clamping groove for clamping a workpiece is formed between the positioning adjusting screws of the two positioning blocks.
5. The machining jig for the brake spider of the automobile brake according to claim 1 or 4, wherein: the head of the positioning and adjusting screw is of a cone frustum-shaped structure, and a generatrix of a cone surface of the head of the positioning and adjusting screw is movably contacted with a workpiece.
6. The machining jig for the brake spider of the automobile brake according to claim 1, wherein: the cylinder fixing seat is fixedly connected with the clamp body through a fastening screw.
7. The machining jig for the brake spider of the automobile brake according to claim 1, wherein: a labyrinth seal structure is formed between the positioning disc and the positioning guide sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922109028.XU CN211387838U (en) | 2019-11-30 | 2019-11-30 | Machining clamp for brake bottom plate of automobile brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922109028.XU CN211387838U (en) | 2019-11-30 | 2019-11-30 | Machining clamp for brake bottom plate of automobile brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211387838U true CN211387838U (en) | 2020-09-01 |
Family
ID=72207140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922109028.XU Active CN211387838U (en) | 2019-11-30 | 2019-11-30 | Machining clamp for brake bottom plate of automobile brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211387838U (en) |
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2019
- 2019-11-30 CN CN201922109028.XU patent/CN211387838U/en active Active
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