CN216097523U - Independent floating auxiliary positioning fixture for piston - Google Patents
Independent floating auxiliary positioning fixture for piston Download PDFInfo
- Publication number
- CN216097523U CN216097523U CN202023320638.3U CN202023320638U CN216097523U CN 216097523 U CN216097523 U CN 216097523U CN 202023320638 U CN202023320638 U CN 202023320638U CN 216097523 U CN216097523 U CN 216097523U
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- piston
- locating piece
- seat
- tang
- spigot
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Abstract
The utility model provides an independent floating auxiliary positioning fixture for a piston, which can solve the technical problem of low positioning precision of the traditional fixture. The utility model provides an independent floating auxiliary positioning anchor clamps of piston, includes the tight round pin, the tight body of straining and tang seat, its characterized in that: the tang seat is equipped with a pair of tang complex tang profile modeling locating piece with the piston both sides, anchor clamps still include with the unsteady locating piece of the key seat plane one-to-one of piston, the locating piece that floats sets up between a pair of tang profile modeling locating piece of tang seat, through a pair of bolt direction cooperation between unsteady locating piece and the tang seat, the screw rod of bolt run through behind the guiding hole of unsteady locating piece with chassis fixed connection, the cover is equipped with the spring on the screw rod, the both ends of spring elasticity respectively support to lean on unsteady locating piece and chassis, the upper portion of unsteady locating piece be equipped with the key seat plane complex locating surface of piston.
Description
Technical Field
The utility model relates to the technical field of auxiliary tools for piston machining, in particular to an independent floating auxiliary positioning clamp for a piston.
Background
The blank of the piston product is made by forging, and the coaxiality of the inner cavity and the excircle is poor, namely the eccentric structure. When processing annular, combustion chamber, top surface or the excircle of piston, traditional anchor clamps adopt taut clamping mode, mainly include taut round pin, taut body and tang seat. However, as shown in fig. 1, the spigot of the piston is arranged at the bottom of the two non-closed arc-shaped side walls, and the positioning accuracy of the conventional fixture is low, so that the product processing accuracy is low, and the customer requirements are difficult to meet.
SUMMERY OF THE UTILITY MODEL
The utility model provides an independent floating auxiliary positioning fixture for a piston, which can solve the technical problem of low positioning precision of the traditional fixture.
The technical scheme is that, a floating auxiliary positioning fixture of piston, including taut round pin, taut body and tang seat, taut body include with piston cavity profile complex inner chamber profile modeling locating piece, connect the cylinder in inner chamber profile modeling locating piece lower part, set up the pinhole that supplies taut round pin to pass on the inner chamber profile modeling locating piece, the cylinder runs through the locating piece that floats in proper order with the tang seat, its characterized in that: the tang seat be equipped with a pair of tang complex tang profile modeling locating piece with the piston both sides, anchor clamps still include with the round pin base plane one-to-one of piston the locating piece that floats, the locating piece that floats sets up between a pair of tang profile modeling locating piece of tang seat, the locating piece that floats with through a pair of bolt direction cooperation between the tang seat, the screw rod of bolt run through behind the guiding hole of the locating piece that floats with chassis fixed connection, the cover is equipped with the spring on the screw rod, the both ends of spring elasticity respectively support by the locating piece that floats with the chassis, the upper portion of the locating piece that floats be equipped with the round pin base plane complex locating surface of piston.
Furthermore, the cross sections of the screw rod and the guide hole are all round-angle rectangles.
Furthermore, the spigot seat is provided with an installation groove matched with the spring.
Furthermore, the lateral part of cylinder is equipped with the stopper, the tang seat with the inboard in cylinder complex post hole is equipped with the spacing groove, the stopper with spacing groove guide fit.
According to the independent floating auxiliary positioning fixture, on the basis of positioning and matching of the spigot copying positioning blocks and the spigots, the floating positioning blocks which correspond to the pin boss planes of the pistons one by one are additionally arranged between the spigot copying positioning blocks, the floating positioning blocks are pushed upwards under the elastic action of the springs and are in positioning and matching with the pin boss planes of the pistons, so that the positioning precision of the fixture is effectively improved, the product processing precision is improved, and the product customer satisfaction is high.
Drawings
Fig. 1 is a schematic structural diagram of a first view angle of a piston to be machined.
Fig. 2 is a schematic structural diagram of a piston to be machined from a second viewing angle.
Fig. 3 is a schematic cross-sectional view of the clamp of the present invention in its entirety, with the piston assembled.
Fig. 4 is a schematic cross-sectional view taken along line D-D of fig. 3, with the piston assembled.
Detailed Description
As shown in fig. 1 and 2, a pin boss plane P2 is provided at the bottom of the pin hole P1 of the piston to be machined, arc-shaped side walls P3 are respectively provided at both sides of the pin hole P1 of the piston to be machined, and a spigot is provided at the inner side of the bottom of the arc-shaped side wall P3.
As shown in fig. 3 and 4, an independent floating auxiliary positioning fixture for a piston comprises a tensioning pin 4, a tensioning body 3 and a spigot seat 1, wherein the tensioning body 3 comprises an inner cavity profiling positioning block 3a matched with the inner cavity profile of the piston P and a cylinder 3b connected to the lower part of the inner cavity profiling positioning block 3a, the inner cavity profiling positioning block 3a is provided with a pin hole for the tensioning pin 4 to pass through, the cylinder 3b sequentially penetrates through the floating positioning block and the spigot seat 1, the spigot seat 1 is provided with a pair of spigot profiling positioning blocks 1a matched with spigots at two sides of the piston P, the fixture further comprises floating positioning blocks 2 one-to-one corresponding to the pin seat planes of the piston P to be processed, the floating positioning blocks 2 are arranged between the pair of spigot profiling positioning blocks 1a of the spigot seat 1, the floating positioning blocks 2 are in guiding fit with the spigot seat 1 through a pair of bolts 5, the screws of the bolts 5 penetrate through the guiding holes of the floating positioning blocks 2 and then are fixedly connected with a chassis, the cross-section of screw rod and guiding hole is the fillet rectangle, and the cover is equipped with spring 6 on the screw rod, and spring 6's both ends elasticity respectively supports and leans on locating piece 2 and chassis that float, tang seat 1 be equipped with spring 6 complex mounting groove 1b, the upper portion of locating piece 2 that float be equipped with piston P's key seat plane complex locating surface.
The lateral part of cylinder 3b is equipped with the stopper, and the tang seat 1 is equipped with the spacing groove with the inboard in cylinder 3b complex post hole, and the stopper slides, the direction cooperation with the spacing groove to prevent that cylinder 3b from rotating, realize the quick positioning assembly of tensioning pin.
Claims (4)
1. The utility model provides an independent unsteady assistance-localization real-time anchor clamps of piston, includes taut round pin, taut body and tang seat, taut body include with piston cavity profile complex inner chamber profile modeling locating piece, connect the cylinder in inner chamber profile modeling locating piece lower part, set up the pinhole that supplies taut round pin to pass on the inner chamber profile modeling locating piece, the cylinder run through in proper order the locating piece that floats with the tang seat, its characterized in that: the spigot seat is provided with a pair of spigot-matched spigot copying locating blocks on two sides of the piston, the fixture further comprises a floating locating block in one-to-one correspondence with the plane of the pin boss of the piston, the floating locating block is arranged between the pair of spigot copying locating blocks of the spigot seat, the floating locating block is in guiding fit with the spigot seat through a pair of bolts, screw rods of the bolts are fixedly connected with the chassis after penetrating through guide holes of the floating locating block, springs are sleeved on the screw rods, the two ends of the springs are respectively elastically abutted against the floating locating block and the chassis, and the upper portions of the floating locating blocks are provided with locating faces matched with the plane of the pin boss of the piston.
2. The independent floating auxiliary positioning fixture of a piston as claimed in claim 1, wherein: the cross sections of the screw and the guide hole are all round corner rectangles.
3. The independent floating auxiliary positioning fixture of a piston as claimed in claim 2, wherein: the spigot seat is provided with a mounting groove matched with the spring.
4. The independent floating auxiliary positioning fixture of a piston as claimed in claim 1, wherein: the lateral part of cylinder is equipped with the stopper, the tang seat with the inboard in cylinder complex post hole is equipped with the spacing groove, the stopper with spacing groove guide fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023320638.3U CN216097523U (en) | 2020-12-31 | 2020-12-31 | Independent floating auxiliary positioning fixture for piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023320638.3U CN216097523U (en) | 2020-12-31 | 2020-12-31 | Independent floating auxiliary positioning fixture for piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216097523U true CN216097523U (en) | 2022-03-22 |
Family
ID=80686018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023320638.3U Active CN216097523U (en) | 2020-12-31 | 2020-12-31 | Independent floating auxiliary positioning fixture for piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216097523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114888592A (en) * | 2022-05-13 | 2022-08-12 | 安徽省恒泰动力科技有限公司 | Point positioning device for machining lightweight piston and positioning method thereof |
-
2020
- 2020-12-31 CN CN202023320638.3U patent/CN216097523U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114888592A (en) * | 2022-05-13 | 2022-08-12 | 安徽省恒泰动力科技有限公司 | Point positioning device for machining lightweight piston and positioning method thereof |
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