CN102357826B - Self-centering fixture - Google Patents
Self-centering fixture Download PDFInfo
- Publication number
- CN102357826B CN102357826B CN2011102866594A CN201110286659A CN102357826B CN 102357826 B CN102357826 B CN 102357826B CN 2011102866594 A CN2011102866594 A CN 2011102866594A CN 201110286659 A CN201110286659 A CN 201110286659A CN 102357826 B CN102357826 B CN 102357826B
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- Prior art keywords
- axle
- expansion set
- workpiece
- adjusting nut
- ring flange
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Abstract
The invention discloses a self-centering fixture which comprises a mandrel and an expansion sleeve, wherein the mandrel is mounted on a machine tool through a flange; the expansion sleeve is sleeved on the outer circumference of the mandrel and can move axially; multiple expansion joints are arranged on the outer wall of the expansion sleeve; the outer wall of the mandrel and the inner wall of the expansion sleeve are matched conical surfaces; the mandrel is provided with an adjusting nut for driving the expansion sleeve to move along the mandrel; a pull rod and a stop ring are arranged between the mandrel and the expansion sleeve to pull the expanded sleeve to a shrinkage end; and through the expansion and shrinkage of the expansion joints, the outer diameter is controlled to increase/reduce so as to position/dismantle a workpiece. The fixture has a simple structure, is convenient to use and can realize self centering; and moreover, the processing accuracy of the workpiece is improved, the concentricity and verticality between the processed surface and an inner hole of the workpiece can be ensured, and the fixture deserves popularization and application in the fields realizing positioning and clamping by use of the inner hole of the workpiece.
Description
Technical field
the present invention relates to a kind of work piece holder, particularly, relate 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
of the present invention provide a kind of can self-centering anchor clamps.
For solving the problems of the technologies described above, the present invention 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 invention has the beneficial effects as follows: 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 self-centering fixture of the present invention;
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 present invention;
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 technical scheme of the present invention is done following detailed description the in detail:
shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, self-centering fixture of the present invention 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, and 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; Ring flange far away 1 end of axle 2 has one section external screw thread; This section external screw thread place is equipped with adjusting nut 4, circumferentially is arranged with a slidably baffle ring 5 outside the axle 2, offers 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; One end of pull bar 12 and baffle ring 5 fix through a pin 8, and pin 8 is through in a pair of chute 6, also can slides along it, and the other end of pull bar 12 is fixed with a catch 7; 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; 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 offers a plurality of expansion joints 10 of expanding and shrinking be convenient on the expansion set 3, and 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, enlarge, thereby offset with the inwall of workpiece because of 10 at the expansion joint on the expansion set 3 makes external diameters greatly to the direction that the external diameter of axle 2 increases; 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.
self-centering fixture of the present invention 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 only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
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 described pull bar and described baffle ring; 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 |
|---|---|---|---|
| CN2011102866594A CN102357826B (en) | 2011-09-26 | 2011-09-26 | Self-centering fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102866594A CN102357826B (en) | 2011-09-26 | 2011-09-26 | Self-centering fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102357826A CN102357826A (en) | 2012-02-22 |
| CN102357826B true CN102357826B (en) | 2012-11-07 |
Family
ID=45583235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102866594A Expired - Fee Related CN102357826B (en) | 2011-09-26 | 2011-09-26 | Self-centering fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102357826B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814519A (en) * | 2012-05-03 | 2012-12-12 | 沈阳富创精密设备有限公司 | Internal expansion tool for mechanical processing |
| CN102814520B (en) * | 2012-08-22 | 2014-08-13 | 浙江联宜电机股份有限公司 | Expansion clamping tool |
| CN103008710A (en) * | 2012-11-23 | 2013-04-03 | 大连滨城活塞制造有限公司 | Rigid multipurpose expanding tire |
| CN103042399A (en) * | 2012-12-10 | 2013-04-17 | 佛山市顺德区金泰德胜电机有限公司 | Clamp for processing motor end cover |
| CN103009128A (en) * | 2012-12-10 | 2013-04-03 | 佛山市顺德区金泰德胜电机有限公司 | Clamp for machining motor end cover |
| CN103465080A (en) * | 2013-09-13 | 2013-12-25 | 河南省中原大化集团有限责任公司 | High-pressure sealing gasket machining tool and application method |
| CN104607682B (en) * | 2014-12-17 | 2018-01-19 | 重庆第二机床厂有限责任公司 | A kind of thin-wall part high accuracy processing localization method |
| CN109917316B (en) * | 2017-12-12 | 2021-05-18 | 航天科工惯性技术有限公司 | Self-centering positioning clamping device for fluxgate |
| CN108356305A (en) * | 2018-04-20 | 2018-08-03 | 宁波丰州机械有限公司 | Internal expanding chuck |
| CN109249050A (en) * | 2018-11-14 | 2019-01-22 | 无锡信捷电气股份有限公司 | Inner hole automatic centering clamping mechanism |
| CN111805277B (en) * | 2019-04-10 | 2022-08-09 | 安徽美芝制冷设备有限公司 | Work fixture |
| CN110744477A (en) * | 2019-10-14 | 2020-02-04 | 浙江柏润机械有限公司 | Positioning fixture for mounting sealing ring on end part of right-angle pipe joint |
| CN115946029B (en) * | 2023-03-10 | 2023-05-23 | 河北通达泵阀集团有限公司 | Polishing device for valve element of ball valve |
| CN117066984B (en) * | 2023-10-16 | 2024-01-26 | 靖江佳晟真空技术有限公司 | New energy automobile motor shaft excircle grinds adds clamping apparatus |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0061075A1 (en) * | 1981-03-17 | 1982-09-29 | Utensileria Sassolese S.a.s. di Casanova Emilio - Liverani Edgardo & C. | Selfcentering device for attaching tools to the spindle of a machine tool |
| DD218008A1 (en) * | 1983-08-15 | 1985-01-30 | Dsf Waermeanlagenbau | DEVICE FOR CENTERING A SHAFT OR AXLE |
| DE4409603A1 (en) * | 1993-03-22 | 1994-09-29 | Etp Transmission Ab | Device for clamping a tool or a workpiece |
| JP2001079725A (en) * | 1999-09-10 | 2001-03-27 | Nt Tool Corp | Tool holder |
| CN201768931U (en) * | 2010-07-12 | 2011-03-23 | 安徽白兔湖汽配有限公司 | Cylinder jacket inner expansion type finish turning fixture |
| CN201862802U (en) * | 2010-11-09 | 2011-06-15 | 强胜精密机械(苏州)有限公司 | Inner expansion type positioning clamp |
| CN202240624U (en) * | 2011-09-26 | 2012-05-30 | 江苏富丽华通用设备有限公司 | Self-centering fixture |
-
2011
- 2011-09-26 CN CN2011102866594A patent/CN102357826B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0061075A1 (en) * | 1981-03-17 | 1982-09-29 | Utensileria Sassolese S.a.s. di Casanova Emilio - Liverani Edgardo & C. | Selfcentering device for attaching tools to the spindle of a machine tool |
| DD218008A1 (en) * | 1983-08-15 | 1985-01-30 | Dsf Waermeanlagenbau | DEVICE FOR CENTERING A SHAFT OR AXLE |
| DE4409603A1 (en) * | 1993-03-22 | 1994-09-29 | Etp Transmission Ab | Device for clamping a tool or a workpiece |
| JP2001079725A (en) * | 1999-09-10 | 2001-03-27 | Nt Tool Corp | Tool holder |
| CN201768931U (en) * | 2010-07-12 | 2011-03-23 | 安徽白兔湖汽配有限公司 | Cylinder jacket inner expansion type finish turning fixture |
| CN201862802U (en) * | 2010-11-09 | 2011-06-15 | 强胜精密机械(苏州)有限公司 | Inner expansion type positioning clamp |
| CN202240624U (en) * | 2011-09-26 | 2012-05-30 | 江苏富丽华通用设备有限公司 | Self-centering fixture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102357826A (en) | 2012-02-22 |
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