CN202240624U - Self-centering fixture - Google Patents
Self-centering fixture Download PDFInfo
- Publication number
- CN202240624U CN202240624U CN2011203623415U CN201120362341U CN202240624U CN 202240624 U CN202240624 U CN 202240624U CN 2011203623415 U CN2011203623415 U CN 2011203623415U CN 201120362341 U CN201120362341 U CN 201120362341U CN 202240624 U CN202240624 U CN 202240624U
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- CN
- China
- Prior art keywords
- axle
- expansion set
- ring flange
- adjusting nut
- mandrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a self-centering fixture, which comprises a mandrel and an expansion sleeve, wherein the mandrel is installed on a machine tool by a flange plate; the expansion sleeve is sheathed on the periphery of the mandrel and can axially move; the outer wall of the expansion sleeve is provided with a plurality of expansion joints; the outer wall of the mandrel and the inner wall of the expansion sleeve are in an adaptive conical surface; the mandrel is provided with a regulating nut which drives the expansion sleeve to move along the mandrel; a baffle ring and a draw bar which is used for pulling the expanded expansion sleeve to a contraction end are arranged between the mandrel and the expansion sleeve; and the expansion joints are expanded and contracted to control the external diameter of the expansion joints to be enlarged and reduced so as to position and unload workpieces. The fixture has a simple structure, is convenient to use and can be centered by self, the machining precision of the workpieces is improved, the concentricity and the verticality of a machined surface and the inner hole of the workpiece can be guaranteed, and the self-centering fixture is suitable to popularize and use in fields which realize the purposes of clamping and positioning by the inner hole of the workpiece.
Description
Technical field
the utility model relates to a kind of work piece holder, particularly, relates to a kind of self-centering fixture.
Background technology
In
machining; Some workpiece position and clamp through its endoporus; And existing anchor clamps or structure more complicated, or be exactly to unload cumbersomely, and scarcely can realize self-centering; The requirement that often can not satisfy condition causes machining accuracy poor.
Summary of the invention
the utility model provide a kind of can self-centering anchor clamps.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of self-centering fixture comprises through ring flange being installed in axle on the lathe, being set in described axle periphery and can axially movable expansion set,
Described axle is the external diameter of cone and nearly ring flange end of hollow greater than the external diameter of ring flange end far away; The ring flange end far away of described axle has one section external screw thread, and this section external screw thread place is equipped with adjusting nut, and described axle circumferentially is arranged with a slidably baffle ring outward; Offer a pair of chute that distributes vertically on the described axle; The axle center of described axle is hung with a pull bar, and an end of described pull bar and described baffle ring fix through a pin, and described pin is through in a pair of described chute, also can slides along it; The other end of described pull bar is fixed with a catch
The internal face of described expansion set is the column face for conicoid, the outside wall surface that the outside wall surface with described axle is complementary; The nearly ring flange end of described expansion set has the locating ring that is used for the axial location workpiece of circumferential protrusion; Axially offer a plurality of expansion joints of expanding and shrinking be convenient on the described expansion set
described expansion set is set between described baffle ring and the described adjusting nut; When described adjusting nut near the direction turn of described ring flange the time; The direction that described expansion set increases to the external diameter of described axle moves and external diameter is enlarged, thereby offsets with the inwall of workpiece; When described adjusting nut to away from the direction turn of described ring flange the time; Described adjusting nut drives described catch through the described baffle ring of described pull bar; And described expansion set is moved to the direction of the reduced diameter of described axle, the reduced diameter of described expansion set and being separated with the inwall of workpiece.
preferably are provided with the binder pad between described adjusting nut and the described expansion set.
The beneficial effect of
the utility model is: simple in structure; Workpiece easy to loading and unloading; And can realize self-centering, improved machining accuracy, reliable in structure; Can guarantee concentricity, the perpendicularity of machined surface and workpiece endoporus, promote the use of in the field that is adapted at relying on the workpiece endoporus to realize locating and clamping.
Description of drawings
Accompanying drawing 1 is the structural scheme of mechanism of the self-centering fixture of the utility model;
Accompanying drawing 2 be in the accompanying drawing 1 A-A to cross-sectional schematic;
Accompanying drawing 3 is the structural representation of the expansion set in the self-centering fixture of the utility model;
accompanying drawing 4 is a B place enlarged diagram in the accompanying drawing 3.
In
accompanying drawing: 1, ring flange; 2, axle; 3, expansion set; 4, adjusting nut; 5, baffle ring; 6, chute; 7, catch; 8, pin; 9, locating ring; 10, expansion joint; 11, binder pad; 12, pull bar.
The specific embodiment
Below in conjunction with embodiment shown in the drawings the technical scheme of the utility model is done following detailed description the in detail:
are shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4; The self-centering fixture of the utility model comprises through ring flange 1 and is installed in axle 2 on the lathe, is set in axle 2 peripheries and can axially movable expansion set 3; Axle 2 is the external diameter of cone and nearly ring flange 1 end of hollow greater than the external diameter of ring flange 1 end far away, and ring flange far away 1 end of axle 2 has one section external screw thread, and this section external screw thread place is equipped with adjusting nut 4; Circumferentially be arranged with a slidably baffle ring 5 outside the axle 2; Offer a pair of chute 6 that distributes vertically on the axle 2, the axle center of axle 2 is hung with a pull bar 12, and an end of pull bar 12 and baffle ring 5 fix through a pin 8; Pin 8 is through in a pair of chute 6, also can slides along it; The other end of pull bar 12 is fixed with a catch 7, and the internal face of expansion set 3 is the column face for conicoid, the outside wall surface that the outside wall surface with axle 2 is complementary, and nearly ring flange 1 end of expansion set 3 has the locating ring that is used for the axial location workpiece 9 of circumferential protrusion; Axially offer a plurality of expansion joints 10 of expanding and shrinking be convenient on the expansion set 3; Expansion set 3 is set between baffle ring 5 and the adjusting nut 4, when adjusting nut 4 near the direction turn of ring flange 1 time, promote expansion set 3 and move to the direction that the external diameter of axle 2 increases; Enlarge because of 10 at the expansion joint on the expansion set 3 makes external diameters greatly, thereby offset with the inwall of workpiece; When adjusting nut 4 to away from the direction turn of ring flange 1 time; Adjusting nut 4 drives catch 7 through pull bar 12 baffle rings 5; And expansion set 3 is moved to the direction of the reduced diameter of axle 2, the expansion joint 10 on the expansion set 3 is contracted to initial size and makes the reduced diameter of expansion set 3, thereby is separated with the inwall of workpiece; So just easily the workpiece that machines is taken off, between adjusting nut 4 and expansion set 3, be provided with binder pad 11.
The self-centering fixture of
the utility model is simple in structure; Workpiece easy to loading and unloading; And can realize self-centering, improved machining accuracy, reliable in structure; Can guarantee concentricity, the perpendicularity of machined surface and workpiece endoporus, promote the use of in the field that is adapted at relying on the workpiece endoporus to realize locating and clamping.
the foregoing description is only for explaining the technical conceive and the characteristics of the utility model; Its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection domain of the utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the utility model.
Claims (2)
1. self-centering fixture is characterized in that: comprises through ring flange being installed in axle on the lathe, being set in described axle periphery and can axially movable expansion set,
Described axle is the external diameter of cone and nearly ring flange end of hollow greater than the external diameter of ring flange end far away; The ring flange end far away of described axle has one section external screw thread, and this section external screw thread place is equipped with adjusting nut, and described axle circumferentially is arranged with a slidably baffle ring outward; Offer a pair of chute that distributes vertically on the described axle; The axle center of described axle is hung with a pull bar, and an end of described pull bar and described baffle ring fix through a pin, and described pin is through in a pair of described chute, also can slides along it; The other end of described pull bar is fixed with a catch
The internal face of described expansion set is the column face for conicoid, the outside wall surface that the outside wall surface with described axle is complementary; The nearly ring flange end of described expansion set has the locating ring that is used for the axial location workpiece of circumferential protrusion; Axially offer a plurality of expansion joints of expanding and shrinking be convenient on the described expansion set
Described expansion set is set between described baffle ring and the described adjusting nut; When described adjusting nut near the direction turn of described ring flange the time; The direction that described expansion set increases to the external diameter of described axle moves and external diameter is enlarged, thereby offsets with the inwall of workpiece; When described adjusting nut to away from the direction turn of described ring flange the time; Described adjusting nut drives described catch through the described baffle ring of described pull bar; And described expansion set is moved to the direction of the reduced diameter of described axle, the reduced diameter of described expansion set and being separated with the inwall of workpiece.
2. a kind of self-centering fixture according to claim 1 is characterized in that: be provided with the binder pad between described adjusting nut and the described expansion set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203623415U CN202240624U (en) | 2011-09-26 | 2011-09-26 | Self-centering fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203623415U CN202240624U (en) | 2011-09-26 | 2011-09-26 | Self-centering fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202240624U true CN202240624U (en) | 2012-05-30 |
Family
ID=46101925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203623415U Withdrawn - After Issue CN202240624U (en) | 2011-09-26 | 2011-09-26 | Self-centering fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202240624U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357826A (en) * | 2011-09-26 | 2012-02-22 | 江苏富丽华通用设备有限公司 | Self-centering fixture |
| CN103769900A (en) * | 2014-02-23 | 2014-05-07 | 张鸿来 | Flexible self-centering fixture |
| CN104717837A (en) * | 2015-03-25 | 2015-06-17 | 竞陆电子(昆山)有限公司 | Expanding-collapsing-type PCB alignment pin mechanism |
| CN105692336A (en) * | 2016-02-15 | 2016-06-22 | 江苏永鼎股份有限公司 | Damping device for optical fiber disk |
| CN107764227A (en) * | 2017-12-20 | 2018-03-06 | 晋江市安海联诚机械有限公司 | Self-centering cubing for inner hole part |
| CN109773450A (en) * | 2019-03-13 | 2019-05-21 | 上海新松机器人有限公司 | Expanding guide extension assembly machine |
-
2011
- 2011-09-26 CN CN2011203623415U patent/CN202240624U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357826A (en) * | 2011-09-26 | 2012-02-22 | 江苏富丽华通用设备有限公司 | Self-centering fixture |
| CN102357826B (en) * | 2011-09-26 | 2012-11-07 | 江苏富丽华通用设备有限公司 | Self-centering fixture |
| CN103769900A (en) * | 2014-02-23 | 2014-05-07 | 张鸿来 | Flexible self-centering fixture |
| CN104717837A (en) * | 2015-03-25 | 2015-06-17 | 竞陆电子(昆山)有限公司 | Expanding-collapsing-type PCB alignment pin mechanism |
| CN105692336A (en) * | 2016-02-15 | 2016-06-22 | 江苏永鼎股份有限公司 | Damping device for optical fiber disk |
| CN105692336B (en) * | 2016-02-15 | 2018-08-17 | 江苏永鼎股份有限公司 | A kind of fiber reel vibration absorber |
| CN107764227A (en) * | 2017-12-20 | 2018-03-06 | 晋江市安海联诚机械有限公司 | Self-centering cubing for inner hole part |
| CN107764227B (en) * | 2017-12-20 | 2023-12-15 | 晋江市安海联诚机械有限公司 | Self-centering gauge for inner hole part |
| CN109773450A (en) * | 2019-03-13 | 2019-05-21 | 上海新松机器人有限公司 | Expanding guide extension assembly machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120530 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |