CN204397092U - A kind of internal-expansion type clamping device - Google Patents
A kind of internal-expansion type clamping device Download PDFInfo
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- CN204397092U CN204397092U CN201420802609.6U CN201420802609U CN204397092U CN 204397092 U CN204397092 U CN 204397092U CN 201420802609 U CN201420802609 U CN 201420802609U CN 204397092 U CN204397092 U CN 204397092U
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- cart
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- swelling
- pull bar
- face
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Abstract
The utility model discloses a kind of internal-expansion type clamping device, comprise main shaft, the positioning disk be fixedly connected with main shaft, the end face of described positioning disk installs bevel gear, the endoporus of bevel gear is provided with swelling dish, swelling back-end disk face is connected with positioning disk, swelling dish front end face is connected with helping pull a cart, help pull a cart and be enclosed within pull bar, pull bar is connected with power set, the top of pull bar is provided with boss, the top of helping pull a cart is provided with the groove holding boss, overcoat of helping pull a cart has spacer shell, between spacer shell and positioning disk, latch is installed, pull bar drives movement of helping pull a cart, pulling force of helping pull a cart makes the inner ring of swelling dish compress, swelling dish end face cone angle is changed, radial direction is swollen, thus the endoporus of swelling part bevel gear to be processed, clamping cone gear.The utility model when swelling dish after axially carrying out straining, the radial direction of swelling dish swollen, therefore produce very large chucking power, ensure the reliable retention of part under very big cutting moment of torque action condition.
Description
Technical field
The utility model relates to a kind of mechanical gripping means, is specifically related to a kind of internal-expansion type clamping device adopting swelling dish.
Background technology
On tooth Profile Machining lathe and Digit Control Machine Tool, widely used various hydraulic power fixture all has that chucking power is large, the requirement of centering precision high-technology.The widely used all kinds of fixture of current each machine works, some structures are comparatively complicated, composition fixture number of components many, manufacture time-consuming, assembling and setting process is also longer; The manufacturability also had is complicated especially, and part manufacture requirements is high especially, and manufacturing expense is very high.Therefore, each factory all requires that the structure of this type of fixture is simple as far as possible, easy to manufacture, part clamping is convenient and reliable, also easily reaches very high centering precision requirement.
Therefore, a kind of new technical pattern scheme is needed to solve the problems referred to above
Utility model content
Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides a kind of internal-expansion type clamping device, meet the requirement of high pulling torque cutting and high centering precision, and structure is simple, easy to manufacture, cost is low.
Technical scheme: for achieving the above object, a kind of internal-expansion type clamping device of the present utility model, comprise main shaft, the positioning disk be fixedly connected with main shaft, the end face of described positioning disk is provided with bevel gear to be processed, the endoporus of bevel gear is provided with swelling dish, swelling back-end disk face is connected with positioning disk, swelling dish front end face is connected with helping pull a cart, help pull a cart and be enclosed within pull bar, pull bar is connected with power set, the top of pull bar is provided with boss, the top of helping pull a cart is provided with the groove holding boss, overcoat of helping pull a cart has spacer shell, between spacer shell and positioning disk, latch is installed, pull bar is driven to move by power set, pull bar drives movement of helping pull a cart, pulling force of helping pull a cart makes the inner ring of swelling dish compress, swelling dish end face cone angle is changed, radial direction is swollen, thus the endoporus of swelling part bevel gear to be processed, clamping cone gear.
As preferably, described spacer shell and feather key is housed between helping pull a cart, making to help pull a cart can along slippage before and after spacer shell axis, unlikely generation spacer shell and occur relatively rotating between helping pull a cart.
As preferably, the disk body of described swelling dish has multiple groove along directions of rays, studs with rubber filling thing in groove, makes swelling dish have certain elasticity, the angle of the conical surface easily changes, meet the distortion needs that cylindrical swells.
As preferably, described power set are the angling cylinder simultaneously rotated with main shaft.
As preferably, the front end face of described swelling dish and the axis angle of rear end face and pull bar are acute angle.
As preferably, the size of described acute angle is 75 °-85 °.
Beneficial effect: internal-expansion type clamping device of the present utility model, when swelling dish after axially carrying out straining, the radial direction of swelling dish swollen, therefore produce very large chucking power, ensure the reliable retention of part under very big cutting moment of torque action condition; Because pull bar produces pulling force backward, part is adjacent to firmly on positioning disk end face; Under the effect of draw-bar pull, the cylindrical of swelling dish is in evenly swelling, the centering effect of part is very good, therefore fixture has very high centering precision, and structure is simple, manufacture is also comparatively easy, uses when being applicable to very much the part processing and loading clamp in tooth Profile Machining lathe and Digit Control Machine Tool precision cylindrical shape hole.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of swelling dish in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
As depicted in figs. 1 and 2, a kind of internal-expansion type clamping device of the present utility model, comprise main shaft 10, the positioning disk 1 be fixedly connected with main shaft 10, the end face of positioning disk 1 is provided with bevel gear 2 to be processed, the endoporus of bevel gear 2 is provided with swelling dish 4, swelling dish 4 rear end face is connected with positioning disk 1, swelling dish 4 front end face 9 to be connected with helping pull a cart, help pull a cart and 9 be enclosed within pull bar 8, pull bar 8 is connected with the angling cylinder 11 pulling pull bar 8 to move, the top of pull bar 8 is provided with boss, help pull a cart 9 top be provided with and hold the groove of boss, pull bar 8 pulls by boss 9 motions of helping pull a cart, 9 overcoats of helping pull a cart have spacer shell 6, latch 5 is installed between spacer shell 6 and positioning disk 1, pull bar 8 is driven to move by angling cylinder 11, pull bar 8 drives to help pull a cart and 9 to move, 9 pulling force of helping pull a cart make the inner ring of swelling dish 4 compress, swelling dish 4 end face cone angle is changed, radial direction is swollen, thus the endoporus of swelling part bevel gear 2 to be processed.
In the utility model, spacer shell 6 and help pull a cart between 9 feather key 7 is housed, making to help pull a cart 9 can along slippage before and after spacer shell 6 axis, unlikely generation spacer shell 6 and help pull a cart between 9 and occur relatively rotating; The disk body of swelling dish 4 has multiple groove along directions of rays, studs with rubber filling thing in groove, makes swelling dish 4 have certain elasticity, the angle of the conical surface easily changes, meet the distortion needs that cylindrical swells.Swelling dish 4 is made for having flexible material, such as, can be polytetrafluoroethylene (PTFE) etc., and the axis angle of the front end face of swelling dish 4 and rear end face and pull bar 8 is acute angle, and the preferred size of acute angle is 75 °-85 °.
In the utility model, latch 5 is housed between spacer shell 6 and positioning disk 1, make spacer shell 6, positioning disk 1 and main shaft 10 realize synchronous axial system, the relative angular position between unlikely generation spacer shell 6 and positioning disk 1 changes; 9 outer round surface of helping pull a cart are equipped with feather key 7, and the endoporus of spacer shell 6 has straight trough, and helping pull a cart 9 can along slippage before and after the axis of spacer shell 6, unlikely generation spacer shell 6 and relatively rotating between 9 of helping pull a cart; The disk body 13 of swelling dish 4 has multiple groove along directions of rays, all studs with rubber filling thing 12 in each groove, makes swelling dish 4 have certain elasticity, the angle of the conical surface easily changes, meet the distortion needs that cylindrical swells; The rear portion of pull bar 8 is threaded connection is equipped with angling cylinder 11, and this angling cylinder 11 is assembled together with main shaft 10, is passed to by pulling force help pull a cart 9 in work is rotated by pull bar 8; Positioning disk 1 is assembled together by one group of screw 3 and main shaft 10.
A kind of internal-expansion type clamping device of the present utility model is when real work, first part bevel gear 2 is contained in the outer round surface of swelling dish 4, the left side of bevel gear 2 is close on positioning disk 1 right side, drive angling cylinder 11, pull bar 8 is moved to the left, pull bar 8 is contained in helps pull a cart in the hole of 9, the cascaded surface of pull bar 8 right-hand member with help pull a cart 9 counterbore coordinate, make to help pull a cart and 9 to be moved to the left along feather key 7 in the hole of spacer shell 6, help pull a cart 9 anterior left sides near the inner ring also compressing swelling dish 4 gradually, because swelling dish 4 outer ring left surface is near positioning disk 1 right side be fixed wtih, help pull a cart 9 pulling force swelling dish 4 end face cone angle is changed, excircle dimension is swollen, therefore the endoporus of swelling bevel gear 2 is able to, reach the object of Clamp blocks.
When after part completion of processing, again drive angling cylinder 11, pull bar 8 is moved right, the cascaded surface of pull bar 8 right-hand member contacts with 9 disengagements of helping pull a cart, the inner ring of swelling dish 4 loses pressure, because swelling dish 4 has very large elasticity, make that disk body 13 face deformation returns to original shape, excircle dimension reduces, bevel gear 2 throws off with swelling dish 4 and contacts, operator can take off the part processed, and changes the row processing again of new part.
The above is only preferred embodiment of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. an internal-expansion type clamping device, it is characterized in that: comprise main shaft, the positioning disk be fixedly connected with main shaft, the end face of described positioning disk is provided with bevel gear to be processed, the endoporus of bevel gear is provided with swelling dish, swelling back-end disk face is connected with positioning disk, swelling dish front end face is connected with helping pull a cart, help pull a cart and be enclosed within pull bar, pull bar is connected with the power set pulling pull bar to move, the top of pull bar is provided with boss, the top of helping pull a cart is provided with the groove holding boss, motion of helping pull a cart is driven by pull bar, overcoat of helping pull a cart has spacer shell, between spacer shell and positioning disk, latch is installed, pull bar is driven to move by power set, pull bar drives movement of helping pull a cart, pulling force of helping pull a cart makes the inner ring of swelling dish compress, swelling dish end face cone angle is changed, radial direction is swollen, thus the endoporus of swelling part bevel gear to be processed, clamping cone gear.
2. internal-expansion type clamping device according to claim 1, is characterized in that: described spacer shell and feather key is housed between helping pull a cart.
3. internal-expansion type clamping device according to claim 1, is characterized in that: the disk body of described swelling dish has multiple groove along directions of rays, studs with rubber filling thing in groove.
4. internal-expansion type clamping device according to claim 1, is characterized in that: described power set are the angling cylinder simultaneously rotated with main shaft.
5. internal-expansion type clamping device according to claim 1, is characterized in that: the front end face of described swelling dish and the axis angle of rear end face and pull bar are acute angle.
6. internal-expansion type clamping device according to claim 5, is characterized in that: the size of described acute angle is 75 °-85 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420802609.6U CN204397092U (en) | 2014-12-16 | 2014-12-16 | A kind of internal-expansion type clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420802609.6U CN204397092U (en) | 2014-12-16 | 2014-12-16 | A kind of internal-expansion type clamping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204397092U true CN204397092U (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420802609.6U Active CN204397092U (en) | 2014-12-16 | 2014-12-16 | A kind of internal-expansion type clamping device |
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| Country | Link |
|---|---|
| CN (1) | CN204397092U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108436506A (en) * | 2018-03-29 | 2018-08-24 | 广西玉林达业机械配件有限公司 | A kind of clamp for machining of flywheel ring gear outer circle and end face |
| CN108687369A (en) * | 2017-04-06 | 2018-10-23 | 宁波立强机械有限公司 | Swollen location structure and processing technology in one kind |
-
2014
- 2014-12-16 CN CN201420802609.6U patent/CN204397092U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108687369A (en) * | 2017-04-06 | 2018-10-23 | 宁波立强机械有限公司 | Swollen location structure and processing technology in one kind |
| CN108687369B (en) * | 2017-04-06 | 2024-05-14 | 宁波立强机械有限公司 | Internal expansion positioning structure and processing technology |
| CN108436506A (en) * | 2018-03-29 | 2018-08-24 | 广西玉林达业机械配件有限公司 | A kind of clamp for machining of flywheel ring gear outer circle and end face |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210113 Address after: 210000 9 Yingjia Road, sangyuan community, Lukou street, Jiangning District, Nanjing City, Jiangsu Province (Jiangning Development Zone) Patentee after: Nanjing Ruixin Intelligent Manufacturing Co.,Ltd. Patentee after: NANJING INSTITUTE OF MECHATRONIC TECHNOLOGY Address before: 210014 no.3-2, Lianhe village, Qinhuai District, Nanjing City, Jiangsu Province Patentee before: NANJING XINGNONG GEAR MANUFACTURING Co.,Ltd. Patentee before: NANJING INSTITUTE OF MECHATRONIC TECHNOLOGY |
|
| TR01 | Transfer of patent right |