CN103769900A - Flexible self-centering fixture - Google Patents
Flexible self-centering fixture Download PDFInfo
- Publication number
- CN103769900A CN103769900A CN201410063031.1A CN201410063031A CN103769900A CN 103769900 A CN103769900 A CN 103769900A CN 201410063031 A CN201410063031 A CN 201410063031A CN 103769900 A CN103769900 A CN 103769900A
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- China
- Prior art keywords
- axle
- sides
- flexible
- positioning sleeve
- positioning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/40—Expansion mandrels
Abstract
The invention relates to a flexible self-centering fixture, wherein two ends of a mandrel are respectively provided with a through groove, pressing plates are movably and cooperatively connected into the through grooves, a positioning sleeve is cooperatively connected with the outer cylinder of the mandrel, a flexible tensioning ring is mounted between each of two sides of the positioning sleeve and the pressing plate, two pressing plates are connected with threaded shafts at two sides of a screw in the center hole of the mandrel, one pressing plate is connected with the left thread of the threaded shaft of the screw, the other pressing plate is connected with the right thread of the threaded shaft of the screw, the inner sides faces of the threaded shafts at two sides of the screw are in contact connection with the inner end faces of two sides in the center hole of the mandrel, and the front end of the mandrel is fixedly connected with the flange. The flexible self-centering fixture is simple in structure and convenient to load and unload workpieces, and can implement self-centering; particularly after the flexible tensioning ring is used, when in the machining process of loading and clamping a long thin-wall component, the long thin-wall component is clamped by the flexible positioning tensioning ring, so that the machined long thin-wall component is small in deformation, the positioning accuracy is high, the coaxiality and perpendicularity of the long thin-wall component can be ensured, and the long thin-wall component is convenient to load and unload.
Description
Technical field
The present invention relates to a kind of thin-walled parts centralizer, particularly a kind of self-centering fixture of thin-walled parts.
Background technology
In machining, some workpiece are positioned and are clamped by its endoporus, and existing fixture or complicated structure, be exactly unload cumbersome, and order scarcely can realize self-centering, the requirement that often can not satisfy condition, causes machining accuracy poor.Therefore, Chinese invention patent application number: 201110286659.4, a kind of self-centering fixture is disclosed, axle is the cone of hollow, and the external diameter of nearly ring flange end is greater than the external diameter of ring flange end far away, the ring flange end far away of axle has one section of external screw thread, this section of external screw thread place is equipped with adjusting nut, axle is circumferentially arranged with a slidably baffle ring outward, axle is provided with a pair of chute along distributing in axle, the axle center of axle is hung with a pull bar, one end of pull bar and baffle ring fix by a pin, pin is through in a pair of chute, and can slide along it, the other end of pull bar is fixed with a catch, the inwall of expansion set is the conicoid matching with the outer wall of axle, outer wall is column face, the nearly ring flange end of expansion set has the locating ring for axial location workpiece of circumferential protrusion, on expansion set, axially offer multiple expansion joints of being convenient to expansion and shrinking, expansion set is set between baffle ring and adjusting nut, when adjusting nut is during to direction turn near described ring flange, the direction that expansion set increases to the external diameter of axle moves and external diameter is expanded, thereby offset with the inwall of workpiece, when adjusting nut is during to direction turn away from ring flange, adjusting nut drives described catch by pull bar and baffle ring, and expansion set is moved to the direction of the reduced diameter of described axle, the reduced diameter of expansion set and being separated with the inwall of workpiece.But this fixture, in the process of clamping thin-walled parts, easily causes thin-walled parts distortion.Particularly the distortion of thin-walled elongated workpieces is larger.
Summary of the invention
The present invention is the technical problem that clamps machining deformation that will solve thin-walled elongated workpieces, and a kind of flexible self-centering fixture is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of flexible self-centering fixture, comprise axle, flange, pressing plate, screw rod, positioning sleeve, axle two ends have groove, the activity pressing plate that is connected in groove, positioning sleeve is connected in axle outside cylinder, flexible positioning expander collar is housed respectively between positioning sleeve both sides and pressing plate, two block pressur plates are connected with the thread spindle of the screw rod both sides in axle centre bore respectively, wherein, one block pressur plate is connected with screw flight axle left-hand thread, another block pressur plate is connected with screw flight axle right-hand thread, the thread spindle medial surface of screw rod both sides is connected with the both sides inner face contact in axle centre bore respectively, the front end of axle is fixedly connected with flange.
Positioning sleeve external cylindrical surface is connected with thin-walled elongated workpieces endoporus matched in clearance.While clamping thin-walled elongated workpieces, flexible positioning expander collar both sides contact and are connected with pressing plate with positioning sleeve respectively.Between positioning sleeve and axle, interference fit is connected.Flexible positioning expander collar is rubber positioning expander collar.
The invention has the beneficial effects as follows: simple in structure, workpiece easy to loading and unloading, and can realize self-centering, particularly use after flexible positioning expander collar, in the process of clamping thin-walled elongated workpieces, clamped thin-walled elongated workpieces by flexible positioning expander collar, make the thin-walled elongated workpieces deflection after processing little, positioning precision is high, can guarantee axiality and the perpendicularity of the thin-walled elongated workpieces after processing, and is convenient to the handling of thin-walled elongated workpieces.
Accompanying drawing explanation
Fig. 1 is structure cutaway view of the present invention;
Fig. 2 is the cutaway view along A-A in Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As Fig. 1, shown in 2, a kind of flexible self-centering fixture, comprises axle 1, flange 2, positioning sleeve 3, flexible positioning expander collar 4, pressing plate 5, screw rod 6.
Positioning sleeve 3 external cylindrical surfaces are connected with thin-walled elongated workpieces 7 endoporus matched in clearance.While clamping thin-walled elongated workpieces 7, flexible positioning expander collar 4 both sides contact and are connected with pressing plate 5 with positioning sleeve 3 respectively.Between positioning sleeve 3 and axle 1, interference fit is connected.Flexible positioning expander collar 4 is rubber positioning expander collar.
In the time of rotating screw bolt 6, two block pressur plates, under left and right thread spindle effect, inwardly push flexible positioning expander collar 4, make the outside expansion of flexible positioning expander collar 4 contact and push against with the inwall of thin-walled elongated workpieces 7.
In the time rotating backward screw rod 6, two block pressur plates are under left and right thread spindle effect, and outwards mobile and flexible positioning expander collar 4 is unclamped, and flexible positioning expander collar 4 is inwardly shunk with the inwall of thin-walled elongated workpieces 7 and is separated under elastic reaction.
Claims (5)
1. a flexible self-centering fixture, comprise axle (1), flange (2), positioning sleeve (3), it is characterized in that: described axle (1) two ends have groove, the activity pressing plate (5) that is connected in groove, positioning sleeve (3) is connected in axle (1) outside cylinder, between positioning sleeve (3) both sides and pressing plate (5), flexible positioning expander collar (4) is housed respectively, two block pressur plates (5) are connected with the thread spindle of screw rod (6) both sides in axle (1) centre bore respectively, wherein, one block pressur plate (5) is connected with the thread spindle left-hand thread of screw rod (6), another block pressur plate (5) is connected with the thread spindle right-hand thread of screw rod (6), the thread spindle medial surface of screw rod (6) both sides is connected with the both sides inner face contact in axle (1) centre bore respectively, the front end of axle (1) is fixedly connected with flange (2).
2. flexible self-centering fixture according to claim 1, is characterized in that: described positioning sleeve (3) external cylindrical surface is connected with thin-walled elongated workpieces (7) endoporus matched in clearance.
3. flexible self-centering fixture according to claim 1, it is characterized in that: while clamping thin-walled elongated workpieces (7), described flexible positioning expander collar (4) both sides contact and are connected with pressing plate (5) with positioning sleeve (3) respectively.
4. flexible self-centering fixture according to claim 1, is characterized in that: between described positioning sleeve (3) and axle (1), interference fit is connected.
5. flexible self-centering fixture according to claim 1, is characterized in that: described flexible positioning expander collar (4) is rubber positioning expander collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063031.1A CN103769900A (en) | 2014-02-23 | 2014-02-23 | Flexible self-centering fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063031.1A CN103769900A (en) | 2014-02-23 | 2014-02-23 | Flexible self-centering fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103769900A true CN103769900A (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410063031.1A Pending CN103769900A (en) | 2014-02-23 | 2014-02-23 | Flexible self-centering fixture |
Country Status (1)
| Country | Link |
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| CN (1) | CN103769900A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070384A (en) * | 2014-06-10 | 2014-10-01 | 苏州创丰精密五金有限公司 | Milling machine fixture |
| CN104959638A (en) * | 2015-06-17 | 2015-10-07 | 苏州华冲精密机械有限公司 | Novel clamp for machining thin-wall cylinder part |
| CN106271858A (en) * | 2016-08-31 | 2017-01-04 | 中航动力股份有限公司 | A kind of vibration absorber processing thin-walled axial workpiece |
| CN110539248A (en) * | 2019-09-29 | 2019-12-06 | 苏州微创关节医疗科技有限公司 | polishing head and grinding tool |
| CN112605738A (en) * | 2020-11-16 | 2021-04-06 | 中国航发西安动力控制科技有限公司 | Method for clamping thin-wall non-metal part with inner ring groove by cylindrical grinding and machining device |
| CN112692318A (en) * | 2021-01-06 | 2021-04-23 | 贵州龙飞气弹簧有限责任公司 | Tool for machining outer circle of thin-wall long aluminum pipe and using method of tool |
| CN112705966A (en) * | 2020-11-25 | 2021-04-27 | 河南航天液压气动技术有限公司 | Internal supporting and clamping fixture for precise thin-walled piece |
| CN115265276A (en) * | 2022-07-28 | 2022-11-01 | 无锡市星迪仪器有限公司 | Multi-axis positioning device and method |
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| EP1600233A2 (en) * | 2004-05-18 | 2005-11-30 | Alfred Jäger GmbH | Holder for a tool drive unit, in particular for the automatic deburring, the removal of sharp edges or the smoothing of workpieces |
| CN202240624U (en) * | 2011-09-26 | 2012-05-30 | 江苏富丽华通用设备有限公司 | Self-centering fixture |
| CN202607310U (en) * | 2012-06-06 | 2012-12-19 | 无锡新宏泰电器科技股份有限公司 | Self-centering fixture for thin-wall part |
| CN103111863A (en) * | 2012-12-09 | 2013-05-22 | 重庆盾铭电磁阀有限公司 | Spiral drive centering clamping device |
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| US20130154173A1 (en) * | 2011-08-10 | 2013-06-20 | Timothy J. Farnham | Clamp rod assembly |
| CN203171272U (en) * | 2012-12-09 | 2013-09-04 | 重庆盾铭电磁阀有限公司 | Spiral transmission centering fastening device |
| CN203184985U (en) * | 2013-04-22 | 2013-09-11 | 中国北车集团大同电力机车有限责任公司 | Processing and positioning device of hollow shaft sleeve |
-
2014
- 2014-02-23 CN CN201410063031.1A patent/CN103769900A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1600233A2 (en) * | 2004-05-18 | 2005-11-30 | Alfred Jäger GmbH | Holder for a tool drive unit, in particular for the automatic deburring, the removal of sharp edges or the smoothing of workpieces |
| US20130154173A1 (en) * | 2011-08-10 | 2013-06-20 | Timothy J. Farnham | Clamp rod assembly |
| CN202240624U (en) * | 2011-09-26 | 2012-05-30 | 江苏富丽华通用设备有限公司 | Self-centering fixture |
| CN202607310U (en) * | 2012-06-06 | 2012-12-19 | 无锡新宏泰电器科技股份有限公司 | Self-centering fixture for thin-wall part |
| CN202985146U (en) * | 2012-11-29 | 2013-06-12 | 舒丽琴 | Centering fixture |
| CN103111863A (en) * | 2012-12-09 | 2013-05-22 | 重庆盾铭电磁阀有限公司 | Spiral drive centering clamping device |
| CN203171272U (en) * | 2012-12-09 | 2013-09-04 | 重庆盾铭电磁阀有限公司 | Spiral transmission centering fastening device |
| CN203184985U (en) * | 2013-04-22 | 2013-09-11 | 中国北车集团大同电力机车有限责任公司 | Processing and positioning device of hollow shaft sleeve |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070384A (en) * | 2014-06-10 | 2014-10-01 | 苏州创丰精密五金有限公司 | Milling machine fixture |
| CN104959638A (en) * | 2015-06-17 | 2015-10-07 | 苏州华冲精密机械有限公司 | Novel clamp for machining thin-wall cylinder part |
| CN106271858A (en) * | 2016-08-31 | 2017-01-04 | 中航动力股份有限公司 | A kind of vibration absorber processing thin-walled axial workpiece |
| CN110539248A (en) * | 2019-09-29 | 2019-12-06 | 苏州微创关节医疗科技有限公司 | polishing head and grinding tool |
| CN112605738A (en) * | 2020-11-16 | 2021-04-06 | 中国航发西安动力控制科技有限公司 | Method for clamping thin-wall non-metal part with inner ring groove by cylindrical grinding and machining device |
| CN112605738B (en) * | 2020-11-16 | 2023-09-05 | 中国航发西安动力控制科技有限公司 | Cylindrical grinding clamping method and processing device for thin-wall nonmetallic part with inner ring groove |
| CN112705966A (en) * | 2020-11-25 | 2021-04-27 | 河南航天液压气动技术有限公司 | Internal supporting and clamping fixture for precise thin-walled piece |
| CN112692318A (en) * | 2021-01-06 | 2021-04-23 | 贵州龙飞气弹簧有限责任公司 | Tool for machining outer circle of thin-wall long aluminum pipe and using method of tool |
| CN115265276A (en) * | 2022-07-28 | 2022-11-01 | 无锡市星迪仪器有限公司 | Multi-axis positioning device and method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140507 |