CN219703725U - Clamp suitable for rack gear grinding machining - Google Patents
Clamp suitable for rack gear grinding machining Download PDFInfo
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- CN219703725U CN219703725U CN202321004448.1U CN202321004448U CN219703725U CN 219703725 U CN219703725 U CN 219703725U CN 202321004448 U CN202321004448 U CN 202321004448U CN 219703725 U CN219703725 U CN 219703725U
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- pressing block
- rack
- flat plate
- mounting groove
- movable
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- 238000003754 machining Methods 0.000 title abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 79
- 206010006514 bruxism Diseases 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 238000001514 detection method Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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Abstract
The utility model relates to a clamp suitable for machining a rack gear, and belongs to the technical field of automobile steering gear part detection tools. The gear grinding device comprises a bottom plate, a gear grinding box body, a hydraulic cylinder, a limiting block, a flat plate, a movable pressing block, a fixed pressing block and a supporting plate, wherein the flat plate is arranged on the surface of the gear grinding box body, a mounting groove is obliquely arranged on the flat plate at intervals, one end of the hydraulic cylinder extends into the mounting groove, the movable pressing block is arranged at the end of the hydraulic cylinder extending into the mounting groove, and the fixed pressing block is arranged in the mounting groove at two sides of the movable pressing block. The movable pressing blocks and the fixed pressing blocks are arranged on the flat plate at intervals, so that the use amount of the hydraulic cylinder is effectively reduced, and the width of the fixed pressing blocks is smaller than that of the movable pressing blocks, so that the whole width of the clamp is reduced, and the production cost is reduced; the rack is placed on the flat plate, so that the processing difficulty of the flat plate is reduced, the flat plate does not need to be replaced according to the model of the rack, the problems of time and labor waste, poor universality and large production cost due to the fact that each pressing block is provided with a hydraulic cylinder are solved.
Description
Technical Field
The utility model relates to a clamp suitable for machining a rack gear, and belongs to the technical field of automobile steering gear part detection tools.
Background
The rack is an important part in the gear-rack steering gear, and along with the increasingly competitive automobile industry, the quality of products is improved, the production cost is reduced, and the gear-rack steering gear becomes the leading idea of manufacturers of various automobile parts. During processing of the rack, one end of the rack is clamped and fixed by a clamp, the rack is placed in an arc-shaped groove of a working table plate by the aid of a pressing and clamping mode when the rack is clamped by the existing clamp, pressing blocks are arranged on two sides of the arc-shaped groove through hydraulic cylinders, the sides of the pressing blocks are arc-shaped, the two sides of the rack are pressed together by the pressing blocks on two sides of the arc-shaped groove, the rack is fixed in the arc-shaped groove, and tooth-shaped processing is carried out on the rack by a tooth grinding machine tool.
In the course of working, the briquetting carries out the centre gripping to the rack, along with the long-term use of briquetting, the arc face of briquetting is difficult to take place wearing and tearing, leads to skidding easily between briquetting and the rack, can't satisfy the profile of tooth precision of rack processing, needs the wearing and tearing spare of periodic replacement, but in daily processing production, current anchor clamps still have following problem: 1. the rack and pinion steering gear has different types, the outer diameter and the spiral angle of the adopted racks are also different, and the types of clamps adopted for racks of different types are also different; 2. in the production process of the clamp, as the hydraulic cylinders are required to drive the pressing blocks, and each pressing block independently acts, each pressing block is required to be provided with the hydraulic cylinder, so that the production cost of the clamp is high.
Disclosure of Invention
The utility model aims to provide the clamp which has good universality and can effectively reduce the production cost, is suitable for rack grinding processing, and solves the problems that when the existing clamp processes racks of different types, the working table plate is required to be replaced, time and labor are wasted, the universality is poor, each pressing block is provided with a hydraulic cylinder, and the production cost is high.
The technical scheme of the utility model is as follows:
the utility model provides a anchor clamps suitable for rack grinding processing, it comprises bottom plate, grinding tooth box, pneumatic cylinder, stopper, dull and stereotyped, move briquetting, decide briquetting and backup pad, its characterized in that: be provided with the gear grinding box on the bottom plate, the internal interval form of gear grinding box is provided with the pneumatic cylinder, and the surface of gear grinding box is provided with the flat board, and the interval form slope is provided with the mounting groove on the flat board, and the one end of pneumatic cylinder extends to in the mounting groove, extends to the pneumatic cylinder end of mounting groove and is provided with movable briquetting, is provided with in the mounting groove of movable briquetting both sides, and flat board one side is provided with the stopper with fixed briquetting and movable briquetting dislocation, is provided with the backup pad on the gear grinding box of flat board opposite side.
The movable pressing block is strip-shaped, the section of the movable pressing block is waist-shaped, and the side surface of the movable pressing block is provided with an arc-shaped surface.
The width of the fixed pressing block is smaller than that of the dynamic pressing block.
The supporting plate is U-shaped.
And a workpiece groove is formed in the flat plate between the fixed pressing block and the movable pressing block.
The beneficial effects of the utility model are as follows:
according to the clamp suitable for rack grinding, the movable pressing blocks and the fixed pressing blocks are arranged on the flat plate at intervals, so that the use amount of a hydraulic cylinder is effectively reduced, and the width of the fixed pressing blocks is smaller than that of the movable pressing blocks, so that the whole width of the clamp is reduced, and the production cost is reduced; through placing the rack on the flat board between fixed pressure piece and movable pressure piece, reduced the processing degree of difficulty of arc groove on the flat board, simultaneously, need not change the flat board according to the model of rack, when having solved current anchor clamps and processing the rack of different models, still need change the work platen, waste time and energy, the commonality is relatively poor, every briquetting all disposes the pneumatic cylinder, problem that manufacturing cost is great.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic side view of the present utility model;
FIG. 3 is a schematic view of the structure of FIG. 2 in partial cross section in the direction A-A.
In the figure: 1. a bottom plate; 2. a gear grinding box body; 3. a hydraulic cylinder; 4. a limiting block; 5. a flat plate; 6. a dynamic pressing block; 7. a fixed pressing block; 8. a mounting groove; 9. a support plate; 10. positioning holes; 11. a positioning pin; 12. a workpiece groove; 13. a rack.
Detailed Description
The clamp suitable for rack gear grinding consists of a bottom plate 1, a gear grinding box body 2, a hydraulic cylinder 3, a limiting block 4, a flat plate 5, a dynamic pressure block 6, a fixed pressure block 7 and a supporting plate 9, wherein waist-shaped positioning holes 10 are formed in two sides of the bottom plate 1, the gear grinding box body 2 is arranged on the bottom plate 1, positioning pins 11 are arranged on two sides of the gear grinding box body 2, and the gear grinding box body 2 is connected with the bottom plate 1 in a matched manner through the positioning pins 11 and the positioning holes 10.
Two rows of hydraulic cylinders 3 are transversely arranged in the gear grinding box body 2 at intervals, a flat plate 5 is arranged on the surface of the gear grinding box body 2, a mounting groove 8 is obliquely arranged on the flat plate 5 at intervals, one end of each hydraulic cylinder 3 extends into the corresponding mounting groove 8, a movable pressing block 6 is arranged at the end head of each hydraulic cylinder 3 extending to the corresponding mounting groove 8 through a joint bearing, each movable pressing block 6 is strip-shaped, the section of each movable pressing block 6 is waist-shaped, an arc-shaped surface is arranged on the side face of each movable pressing block 6, fixed pressing blocks 7 are arranged in the mounting grooves 8 on the two sides of each movable pressing block 6, movable pressing blocks 6 are arranged between the fixed pressing blocks 7 on the flat plate 5 in a staggered mode, and because the number of the fixed pressing blocks 7 is larger than that of the movable pressing blocks 6, the number of the hydraulic cylinders 3 required by the clamp is reduced on the same clamp, and the production cost of the clamp is effectively reduced.
The workpiece groove 12 is arranged on the flat plate 5 between the fixed pressing block 7 and the movable pressing block 6, the bottom of the workpiece groove 12 is a plane, an arc groove for placing the rack 13 is not required to be processed on the flat plate 5 between the mounting grooves 8, the processing difficulty of the flat plate 5 is greatly reduced, meanwhile, the universality of the flat plate 5 is improved by adopting the workpiece groove 12 with the plane bottom due to different arc grooves corresponding to racks of different types, the circumference of the rack 13 is in three-point type abutting with the fixed pressing block 7, the movable pressing block 6 and the flat plate 5 through the joint cooperation of the fixed pressing block 7, the movable pressing block 6 and the flat plate 5, so that the rack 13 is tightly clamped in the workpiece groove 12 of the flat plate 5, and when the racks 13 of different types are processed, the movable pressing block 6 is only required to be replaced, the fixed pressing block 7 and the flat plate 5 do not need to be replaced, the rack 13 can be kept fixed in the three-point type collision state of the fixed pressing block 7, the dynamic pressing block 6 and the flat plate 5, the universality of the fixed pressing block 7 is improved, the replacement steps of racks 13 of different types during processing are effectively reduced, the overall production efficiency is improved, meanwhile, when the flat plate 5, the fixed pressing block 7 and the dynamic pressing block 6 are worn in the use process, workers only need to replace the fixed pressing block 7 and the dynamic pressing block 6 and polish the ground of the workpiece groove 12 roughly, the stability of clamping the rack 13 can be guaranteed, the wearing parts are reduced, the dynamic pressing block 6 is enabled to move up and down in the installation groove 8 through the hydraulic cylinder 3 during working, and the rack 13 is clamped between the flat plate 5 and the fixed pressing block 7.
The width of the fixed pressing block 7 is smaller than that of the dynamic pressing block 6, so that the whole width of the clamp is reduced, the grinding stroke of the gear grinding machine tool is shortened, the machining efficiency of the rack 13 is improved, and meanwhile, the production cost of the fixed pressing block 7 is reduced.
The utility model discloses a gear grinding box, including flat board 5, work piece groove 12, and the work piece groove 12 is corresponding to be provided with stopper 4, and stopper 4 is dislocation form setting with fixed pressure piece 7 and dynamic pressure piece 6, and the effect of stopper 4 is spacing the end of rack 13, is provided with backup pad 9 on the gear grinding box 2 of flat board 5 opposite side, and backup pad 9 is "U" font, and backup pad 9's effect is supporting the other end of rack 13, is provided with the gasket with work piece groove 12 correspondence on the backup pad 9, avoids the fish tail with rack 13.
This anchor clamps are when production, through setting up work piece groove 12 bottom into the plane, compare with the arc groove of current anchor clamps, both improved the commonality of dull and stereotyped 5, reduced the processing degree of difficulty of dull and stereotyped 5 again, through setting up fixed briquetting 7, shortened holistic width, under the condition with current anchor clamps same width, can set up more work piece grooves 12 on the dull and stereotyped 5 to the machining station of rack 13 has been increased, rack 13's machining efficiency has been improved.
When the clamp is used, the movable blocks 6 are lifted through the hydraulic cylinders 3, racks 13 to be machined are placed in the workpiece grooves 12, one ends of the racks 13 are abutted against the limiting blocks 4, the other ends of the racks 13 are placed on the supporting plates 9, then the movable blocks 6 are lowered through the hydraulic cylinders 3, the movable blocks 6 are matched with the fixed blocks 7 on two sides, the racks 13 on two sides of the movable blocks 6 are tightly clamped in the workpiece grooves 12, each hydraulic cylinder 3 controls one movable block 6 to be matched with the fixed blocks 7 to tightly clamp the two racks 13, the use efficiency of the hydraulic cylinders 3 is improved, and after the racks 13 are clamped and fixed, the racks 13 which are arranged on the flat plates 5 in parallel are ground in a reciprocating mode through a gear grinding machine tool to machine tooth shapes.
When racks 13 of different types are required to be processed, only the movable pressing block 6 is required to be replaced, so that the replacement steps are greatly reduced, and the problems that the flat plate 5 is replaced, time and labor are wasted and normal production is influenced are avoided; with the use of the fixed pressing block 7 and the movable pressing block 6, the fixed pressing block 7 and the movable pressing block 6 are worn and replaced on the cambered surfaces, and at the moment, only the fixed pressing block 7 and the movable pressing block 6 are required to be replaced regularly, and the flat plate 5 does not need to be replaced, so that the stability of clamping the rack 13 is ensured, and the bottom surface of the workpiece groove 12 is polished and roughened by a worker, so that the slipping of the rack 13 and the bottom surface of the workpiece groove 12 is avoided.
According to the clamp suitable for rack grinding, the movable pressing blocks 6 and the fixed pressing blocks 7 are arranged on the flat plate 5 at intervals, so that the use amount of the hydraulic cylinder 3 is effectively reduced, the width of the fixed pressing blocks 7 is smaller than that of the movable pressing blocks 6, the whole width of the clamp is reduced, and the production cost is reduced; the flat plate 5 between the fixed pressing block 7 and the movable pressing block 6 is placed through the rack 13, so that the processing difficulty of the arc-shaped groove on the flat plate 5 is reduced, meanwhile, the flat plate 5 does not need to be replaced according to the types of the rack 13, the problem that when the racks 13 of different types are processed by the existing clamp, a working table plate needs to be replaced, time and labor are wasted, the universality is poor, each pressing block is provided with the hydraulic cylinder 3, and the production cost is high is solved.
Claims (5)
1. The utility model provides a anchor clamps suitable for rack grinding, it comprises bottom plate (1), grinding case (2), pneumatic cylinder (3), stopper (4), dull and stereotyped (5), movable block (6), fixed pressure piece (7) and backup pad (9), its characterized in that: be provided with on bottom plate (1) and grind tooth box (2), the interval form is provided with pneumatic cylinder (3) in grinding tooth box (2), the surface of grinding tooth box (2) is provided with dull and stereotyped (5), the interval form slope is provided with mounting groove (8) on dull and stereotyped (5), the one end of pneumatic cylinder (3) extends to in mounting groove (8), extend to pneumatic cylinder (3) end of mounting groove (8) and be provided with movable briquetting (6), be provided with in mounting groove (8) of movable briquetting (6) both sides and decide briquetting (7), dull and stereotyped (5) one side is provided with stopper (4) with fixed briquetting (7) and movable briquetting (6) dislocation, be provided with backup pad (9) on grinding tooth box (2) of dull and stereotyped (5) opposite side.
2. A fixture for rack grinding according to claim 1, characterized in that: the dynamic pressure block (6) is long-strip-shaped, the section of the dynamic pressure block (6) is waist-shaped, and the side surface of the dynamic pressure block (6) is provided with an arc-shaped surface.
3. A fixture for rack grinding according to claim 1, characterized in that: the width of the fixed pressing block (7) is smaller than that of the dynamic pressing block (6).
4. A fixture for rack grinding according to claim 3, wherein: the flat plate (5) between the fixed pressing block (7) and the dynamic pressing block (6) is provided with a workpiece groove (12).
5. A fixture for rack grinding according to claim 1, characterized in that: the supporting plate (9) is U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321004448.1U CN219703725U (en) | 2023-04-28 | 2023-04-28 | Clamp suitable for rack gear grinding machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321004448.1U CN219703725U (en) | 2023-04-28 | 2023-04-28 | Clamp suitable for rack gear grinding machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219703725U true CN219703725U (en) | 2023-09-19 |
Family
ID=87999484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321004448.1U Active CN219703725U (en) | 2023-04-28 | 2023-04-28 | Clamp suitable for rack gear grinding machining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219703725U (en) |
-
2023
- 2023-04-28 CN CN202321004448.1U patent/CN219703725U/en active Active
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