CN211028998U - Special tool for turning and clamping - Google Patents
Special tool for turning and clamping Download PDFInfo
- Publication number
- CN211028998U CN211028998U CN201922222149.5U CN201922222149U CN211028998U CN 211028998 U CN211028998 U CN 211028998U CN 201922222149 U CN201922222149 U CN 201922222149U CN 211028998 U CN211028998 U CN 211028998U
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- Prior art keywords
- special tool
- pyramis
- hole
- clamping according
- dabber
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- 238000001125 extrusion Methods 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 9
- 238000003754 machining Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a tight special frock of turn around clamp, which comprises a mandrel, the front end of dabber is equipped with the location portion that suits with the hole of work piece, the rear end of dabber is equipped with connecting portion, the front end of location portion is narrowed and is equipped with the pyramis, the cover is equipped with elasticity cover that rises on the pyramis, the front end of pyramis is equipped with can the axial extrusion the briquetting of elasticity cover that rises, the briquetting with be equipped with locking structure between the pyramis. The utility model discloses a tight special frock of turn around sets up the dabber and fixes a position the work piece, when processing oil blanket groove, need not to carry out the secondary and proofreads, and the clamping is convenient, fixes a position accurately, presss from both sides tightly fast, helps improving machining efficiency.
Description
Technical Field
The utility model relates to a machine tooling positioner technical field, more specifically say, it relates to a tight special frock of tune clamp.
Background
At present, when oil seal grooves are required to be processed at two ends of an inner hole of a workpiece, the coaxiality of the oil seal grooves at the two ends and the inner hole is required to be within 0.025 mm, and in order to meet the requirement, a common method is to clamp the excircle of the workpiece by using a three-jaw chuck, and to machine the inner hole and the oil seal groove at one end; then the three-jaw chuck on the main shaft needs to be replaced by a four-jaw chuck to clamp the workpiece, the outer circle of the other end of the workpiece is clamped by the four-jaw chuck, an oil seal groove of an inner hole at the other end of the workpiece is turned after the surface is calibrated, the clamping is time-consuming, and the machining efficiency is low.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is not enough to the above-mentioned of prior art, the utility model aims at providing a clamping is convenient, quick tune presss from both sides tight special frock.
For realizing the above-mentioned purpose, the utility model provides a turn around tight special frock, which comprises a mandrel, the front end of dabber is equipped with the location portion that suits with the hole of work piece, the rear end of dabber is equipped with connecting portion, the front end narrowing of location portion is equipped with the pyramis, the cover is equipped with elasticity cover that rises on the pyramis, the front end of pyramis is equipped with can the axial extrusion the briquetting of elasticity cover that rises, the briquetting with be equipped with locking structure between the pyramis.
Furthermore, the rear end of the positioning part is provided with a positioning step.
Furthermore, the connecting part is of a Morse taper shank structure.
As a further improvement, a guide hole extending axially is formed in the axis of the cone, and the press block comprises a sliding part located at the rear end and matched with the guide hole and a limiting convex edge protruding radially from the front end of the sliding part.
As a further improvement, the elastic expansion sleeve comprises a sleeve body, a positioning spigot which is arranged at the front end of an inner hole of the sleeve body and matched with the limiting convex edge, and a tapered hole which is arranged at the rear end of the inner hole of the sleeve body.
Furthermore, the two ends of the side wall of the elastic expansion sleeve are alternately provided with axially extending cracks.
Furthermore, a through hole is formed in the side wall of the elastic expansion sleeve at the end part of the crack.
Furthermore, the locking structure is a screw rod structure which penetrates through the pressing block and is connected with the cone part.
Furthermore, a transition shaft part is arranged between the cone part and the positioning part, and the diameter of the transition shaft part is smaller than that of the positioning part.
Advantageous effects
Compared with the prior art, the utility model discloses a turn round the beneficial effect of tight special frock as follows: this tight special frock of turn around sets up the dabber and fixes a position the work piece, when processing oil blanket groove, need not to carry out the secondary and proofreads, and the clamping is convenient, fixes a position accurately, presss from both sides tightly fast, helps improving machining efficiency.
Drawings
Fig. 1 is a schematic structural view of the special tool for turning and clamping the head of the utility model;
fig. 2 is a schematic structural view of the central spindle of the present invention;
FIG. 3 is a sectional view of the pressing block of the present invention;
FIG. 4 is a perspective view of the elastic expansion sleeve of the present invention;
FIG. 5 is a front view of the elastic expansion sleeve of the present invention;
fig. 6 is a structural sectional view in the direction of a-a of the present invention.
In the figure: 1. a workpiece; 2. a positioning part; 3. a connecting portion; 4. a pyramid part; 5. an elastic expansion sleeve; 51. a sleeve body; 52. a tapered hole; 53. positioning a spigot; 54. cracking; 55. a through hole; 6. briquetting; 7. a locking structure; 8. positioning a step; 9. a guide hole; 10. a sliding part; 11. a limiting convex edge; 12. a transition shaft portion; 13. an oil seal groove; 53. and (6) positioning the spigot.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
The specific implementation manner of the utility model is as follows: as shown in fig. 1-6, a special tool for turning and clamping includes a mandrel, a positioning portion 2 adapted to an inner hole of a workpiece 1 is disposed at a front end of the mandrel, a connecting portion 3 is disposed at a rear end of the mandrel, a taper portion 4 is disposed at a front end of the positioning portion 2, an elastic expansion sleeve 5 is sleeved on the taper portion 4, taper of a taper hole of the elastic expansion sleeve 5 is the same as taper of the taper portion 4, a pressing block 6 capable of axially pressing the elastic expansion sleeve 5 is disposed at a front end of the taper portion 4, and a locking structure 7 is disposed between the pressing block 6 and the taper portion 4. In this tight special frock of tune clamp, after the hole of the good work piece 1 of processing on the lathe and the oil blanket groove 13 of one end, dismantle work piece 1, insert the location portion 2 of dabber in the hole of work piece 1, elasticity rises and overlaps 5 covers on pyramis 4, rethread briquetting 6 compresses tightly elasticity rise cover 5, make work piece 1 and location portion 2 quick fixation together, then install the connecting portion 3 of dabber on the anchor clamps of lathe spindle and press from both sides tightly, start the oil blanket groove 13 that the main shaft can process the work piece 1 other end, need not the alignment, the clamping is convenient, the location is accurate, it is tight fast to press from both sides, help improving machining efficiency.
In this embodiment, the rear end of the positioning portion 2 is provided with a positioning step 8, the positioning portion 2 is of a smooth round shaft structure and is the same as the diameter of the inner hole of the workpiece 1, and the positioning step 8 is adapted to the end face of one end of the inner hole, so that the coaxiality of the workpiece 1 and the mandrel is ensured.
In this embodiment, connecting portion 3 is morse taper shank structure, and connecting portion 3 is connected with the laminating of the morse taper hole on the lathe main shaft, guarantees the axiality of dabber and lathe main shaft, and through morse taper structure positioning, the precision is high, easy dismounting.
In this embodiment, a guide hole 9 extending axially is provided at the axial center of the cone 4, and the pressing block 6 includes a sliding portion 10 at the rear end and adapted to the guide hole 9, and a limiting flange 11 protruding radially from the front end of the sliding portion 10.
The elastic expansion sleeve 5 comprises a sleeve body 51, a positioning spigot 53 which is arranged at the front end of the inner hole of the sleeve body 51 and is matched with the limiting convex edge 11, and a tapered hole 52 which is arranged at the rear end of the inner hole of the sleeve body 51, wherein the taper of the tapered hole 52 is the same as that of the tapered part 4.
The two ends of the side wall of the elastic expansion sleeve 5 are alternately provided with axially extending slits 54.
The limiting convex edge 11 extrudes the elastic expansion sleeve 5, the elastic expansion sleeve 5 is axially extruded to the rear end to be radially expanded, the larger the axial extrusion force applied to the elastic expansion sleeve 5 is, the larger the opening amplitude of the crack 54 is, and the pyramid part 4, the workpiece 1 and the elastic expansion sleeve 5 can be locked without relative displacement.
In this embodiment, the locking structure 7 is a screw structure passing through the pressing block 6 to connect with the cone 4, and the pressing block 6 is pressed by the screw structure, so that the pressing block 6 presses the elastic expansion sleeve 5.
In the present embodiment, a transition shaft portion 12 is provided between the tapered portion 4 and the positioning portion 2, and the diameter of the transition shaft portion 12 is smaller than that of the positioning portion 2. The transition shaft part 12 is arranged to enable the maximum diameter of the cone part 4 to be smaller than the inner diameter of the inner hole of the workpiece 1, so that after the elastic expansion sleeve 5 slides on the top end of the cone part 4, the elastic expansion sleeve 5 slides into a cavity between the inner walls of the inner hole of the workpiece 1 of the transition shaft part 12 due to extrusion deformation, and interference is prevented.
The above is only a preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility of the invention and the utility of the patent.
Claims (9)
1. The utility model provides a turn around tight special frock, includes the dabber, its characterized in that, the front end of dabber is equipped with location portion (2) that suit with the hole of work piece (1), the rear end of dabber is equipped with connecting portion (3), the front end narrowing of location portion (2) is equipped with pyramis (4), the cover is equipped with elasticity cover (5) that rises on pyramis (4), the front end of pyramis (4) is equipped with can axial extrusion briquetting (6) of elasticity cover (5) that rises, briquetting (6) with be equipped with locking structure (7) between pyramis (4).
2. The special tool for turning around and clamping according to claim 1, wherein a positioning step (8) is arranged at the rear end of the positioning part (2).
3. The special tool for turning and clamping according to claim 2, wherein the connecting part (3) is of a Morse taper shank structure.
4. The special tool for turning around and clamping according to claim 1, 2 or 3, wherein a guide hole (9) extending axially is formed in the axis of the cone part (4), and the pressing block (6) comprises a sliding part (10) located at the rear end and matched with the guide hole (9) and a limiting convex edge (11) protruding radially from the front end of the sliding part (10).
5. The special tool for U-turn clamping according to claim 4, wherein the elastic expansion sleeve (5) comprises a sleeve body (51), a positioning spigot (53) arranged at the front end of the inner hole of the sleeve body (51) and matched with the limiting convex edge (11), and a tapered hole (52) arranged at the rear end of the inner hole of the sleeve body (51).
6. The special tool for turning clamping according to claim 5, wherein the two ends of the side wall of the elastic expansion sleeve (5) are alternately provided with axially extending slits (54).
7. The special tool for turning around and clamping according to claim 6, wherein a through hole (55) is formed in the side wall of the elastic expansion sleeve (5) at the end of the slit (54).
8. The special tool for turning clamping according to claim 4, wherein the locking structure (7) is a screw structure which penetrates through the pressing block (6) and is connected with the conical part (4).
9. The special tool for the U-turn clamping according to claim 4, wherein a transition shaft part (12) is arranged between the cone part (4) and the positioning part (2), and the diameter of the transition shaft part (12) is smaller than that of the positioning part (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922222149.5U CN211028998U (en) | 2019-12-12 | 2019-12-12 | Special tool for turning and clamping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922222149.5U CN211028998U (en) | 2019-12-12 | 2019-12-12 | Special tool for turning and clamping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211028998U true CN211028998U (en) | 2020-07-17 |
Family
ID=71565137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922222149.5U Active CN211028998U (en) | 2019-12-12 | 2019-12-12 | Special tool for turning and clamping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211028998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112605672A (en) * | 2020-12-17 | 2021-04-06 | 陕西宝成航空仪表有限责任公司 | Auxiliary clamp for machining parts by taking square holes as reference |
-
2019
- 2019-12-12 CN CN201922222149.5U patent/CN211028998U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112605672A (en) * | 2020-12-17 | 2021-04-06 | 陕西宝成航空仪表有限责任公司 | Auxiliary clamp for machining parts by taking square holes as reference |
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