CN103252515B - A kind of long excircle of barrel-shaped parts Special Fixture for Machining - Google Patents

A kind of long excircle of barrel-shaped parts Special Fixture for Machining Download PDF

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Publication number
CN103252515B
CN103252515B CN201310225542.4A CN201310225542A CN103252515B CN 103252515 B CN103252515 B CN 103252515B CN 201310225542 A CN201310225542 A CN 201310225542A CN 103252515 B CN103252515 B CN 103252515B
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China
Prior art keywords
guide pin
pin bushing
jacking block
mandrel
excircle
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CN201310225542.4A
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CN103252515A (en
Inventor
叶华辉
周素琪
刘俊良
张琪锋
刘少荣
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Xinyu Iron and Steel Co Ltd
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Xinyu Iron and Steel Co Ltd
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Abstract

The present invention relates to a kind of clamping tool for machine work, disclose a kind of long excircle of barrel-shaped parts Special Fixture for Machining, the two ends symmetry of its mandrel is provided with guide pin bushing, tapered sleeve and locking nut successively from inside to outside, end structure sized by guide pin bushing, guide pin bushing small end is fixed on mandrel by holding screw, the large end sleeve of guide pin bushing is provided with through hole, and jacking block is placed in through hole; Jacking block outer end is cambered surface and arranges groove, and the inner is provided with the conical surface, and the cone of tapered sleeve peaks at the conical surface of jacking block; Around jacking block groove built with ring spring.The present invention increases the radial top tight workpiece of jacking block on the basis of axial grip, and excircle of workpiece processing can not radial-play, and centering precision is high; The matching design of guide pin bushing, tapered sleeve, the axle sleeve of increase can regulate centering clamping according to the length of long tube kind part, endoporus easily, improve the versatility of long excircle of barrel-shaped parts machining tool fixture.

Description

A kind of long excircle of barrel-shaped parts Special Fixture for Machining
Technical field
The present invention relates to a kind of clamping tool for machine work, particularly relate to a kind of long excircle of barrel-shaped parts Special Fixture for Machining.
Background technology
Long excircle of barrel-shaped parts grinding and turnery processing adopt mandrel+support ring with endoporus positioning and clamping usually.The clamping structure of the mandrel+support ring in the past used mostly is fixed one to one: namely the long tube kind part of a kind of length specification, endoporus can only configure a kind of mandrel+support ring fixture by Element Design.The cylindricalo grinding of the long barrel part of different length, endoporus and turnery processing, need with corresponding different mandrel+support ring fixtures, and this makes an enterprise need configure a lot of mandrels+support ring fixture, and quantity is various, and management inconvenience, add fixture, processing cost is high.Simultaneously in order to install and remove mandrel, mandrel support ring and long cylinder inner hole need certain gap.Gap is large affects centering precision, and gap is little, and mandrel mounting or dismounting are inconvenient.Even if the hole of same size affects by dimensional tolerance, gap is also difficult to be controlled.A kind of mode of positioning and clamping is also had to be adopt the clamping of taper sheath location in the two-port of long tube kind part inner circle, this positioning and clamping mode can because two-port contact position precision, and affect the quality of part processing, therefore above-mentioned two kinds of modes, even if the hole of same size affects gap also difficult controlled working precision by dimensional tolerance.
Summary of the invention
Technical problem to be solved by this invention improves the centering precision of long excircle of barrel-shaped parts grinding and turning machining, improves the versatility of frock clamp.
The present invention takes following technical scheme, a kind of long excircle of barrel-shaped parts Special Fixture for Machining, comprise mandrel, it is characterized in that, the two ends symmetry of described mandrel is provided with guide pin bushing, tapered sleeve and locking nut successively from inside to outside, end structure sized by guide pin bushing, and guide pin bushing small end is fixedly connected with mandrel by holding screw, the large end sleeve of guide pin bushing is at least arranged with one group of through hole, and jacking block is placed in through hole; Jacking block outer end is cambered surface and radial direction arranges groove, and the inner is set to the conical surface, and matches with the cone of tapered sleeve; The groove inner ring of jacking block has installed around ring spring.
Between described tapered sleeve and locking nut, axle sleeve is housed.
When the present invention uses, first choose the mandrel of a long tube kind part according to Workpiece length, if mandrel is long, do not possess clamping, then the axle sleeve being equipped with corresponding length is contained between locking nut and tapered sleeve.Adjust guide pin bushing relevant position on mandrel according to Workpiece length, and be fixed with holding screw; Unclamp locking nut, pulled out by tapered sleeve, jacking block shrinks inwards under ring-spring effect, is less than workpiece aperture, is loaded in workpiece hole by mandrel, then promoted inwards by tapered sleeve when jacking block is contracted to.Jacking block is risen and supports inner hole of workpiece, then screw locking nut, complete centering clamping.Unclamp nut during dismounting mandrel and pull tapered sleeve, easily can take out mandrel.
Advantage of the present invention is that original support ring is designed to guide pin bushing, tapered sleeve fit system, and the basis of axial grip increases the radial top tight workpiece of jacking block, and excircle of workpiece processing can not radial-play, and centering precision is high; The matching design of guide pin bushing, tapered sleeve, the axle sleeve of increase can regulate centering clamping according to the length of long tube kind part, endoporus easily, no longer need fixed one to one, improve the versatility of long excircle of barrel-shaped parts machining tool fixture.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is A place structure for amplifying schematic diagram in Fig. 1.
Fig. 3 is the schematic diagram of guide pin bushing 3 in Fig. 1.
Fig. 4 is the axial arrangement schematic diagram of mandrel 1, tapered sleeve 2 and jacking block 4 combination.
In figure: 1. mandrel, 2. tapered sleeve, 3. guide pin bushing, 4. jacking block, 5. locking nut, 6. ring spring, 7. holding screw, 8. grow a workpiece, 9. axle sleeve.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described, see Fig. 1 to Fig. 4, a kind of long excircle of barrel-shaped parts Special Fixture for Machining, comprise mandrel 1, it is characterized in that, the two ends symmetry of described mandrel 1 is provided with guide pin bushing 3, tapered sleeve 2 and locking nut 5 successively from inside to outside, end structure sized by guide pin bushing 3, guide pin bushing 3 small end is fixedly connected with mandrel 1 by holding screw 7, and guide pin bushing 1 is held greatly on sleeve and is at least arranged with one group of through hole, and jacking block 4 is placed in through hole; Jacking block 4 outer end is cambered surface and radial direction arranges groove, and the inner is set to the conical surface, and matches with the cone of tapered sleeve 2; The groove inner ring of jacking block 4 has installed around ring spring 6.
Between described tapered sleeve 2 and locking nut 5, axle sleeve 9 is housed.
embodiment:a better embodiment of the present invention is as follows, as shown in Figures 1 to 4, a kind of long excircle of barrel-shaped parts Special Fixture for Machining, form by with lower member, mandrel 1 is one, and axle sleeve 9, tapered sleeve 2 and guide pin bushing 3 are respectively two pieces, jacking block 4 is eight, ring-spring 6 is two pieces, and holding screw 7 is eight, and locking nut 5 is four.End structure sized by guide pin bushing 3, its small end is fixed on mandrel 1 by four holding screws 7, and guide pin bushing 3 is held greatly on sleeve and is at least arranged with one group of through hole, and the present embodiment is symmetrical arranged two groups of four through holes.All be provided with jacking block 4 in through hole, jacking block 4 outer end is cambered surface, and jacking block 4 the inner is provided with the conical surface, have the outer end of cambered surface also radial direction be provided with groove, have the inner of the conical surface to install towards mandrel 1, and the conical surface of jacking block 4 contacts with the cone cone match of tapered sleeve 2.Ring-spring 6 is stuck in the groove of four jacking blocks 4, by guide pin bushing 3 four through holes built with jacking block 4 block, the outer end mandrel 1 of tapered sleeve 2 is provided with locking nut 5, and tapered sleeve 2 is regulated by locking nut 5 and makes jacking block 4 movable in through hole.Moved on mandrel 1 by tapered sleeve 2, jacking block 4 is elevated, thus hold out against the endoporus of long cylinder workpiece 8, realize the object of the long cylinder workpiece 8 of convenient mounting or dismounting.When the present invention uses, first choose the mandrel 1 of a long tube kind part according to long cylinder workpiece 8 length, if mandrel 1 is long, do not possess clamping, the axle sleeve 9 being then equipped with corresponding length is contained between locking nut 5 and tapered sleeve 2, to ensure that jacking block 4 can push up the endoporus at long cylinder workpiece 8 two ends.
Using method of the present invention is as follows: first according to the position of the good guide pin bushing 3 of long cylinder workpiece 8 length adjustment, and itself and mandrel 1 are fixed with holding screw 7; Mandrel 1 is loaded in the hole of long cylinder workpiece 8, then tapered sleeve 2 is promoted inwards.Jacking block 4 is risen and supports long cylinder workpiece 8 endoporus, then screw locking nut 5, complete centering clamping.Unclamp locking nut 5 during dismounting mandrel 1 and pull tapered sleeve 2, can easily take out mandrel 1.
The invention solves the defect of traditional structure mandrel clamping, a kind of mandrel adds Upper shaft sleeve can clamping length, hole size multiple long tube kind part within the specific limits, and centering precision is high, and mounting or dismounting are convenient.

Claims (2)

1. one kind long excircle of barrel-shaped parts Special Fixture for Machining, comprise mandrel, it is characterized in that, the two ends symmetry of described mandrel is provided with guide pin bushing, tapered sleeve and locking nut successively from inside to outside, end structure sized by guide pin bushing, guide pin bushing small end is fixedly connected with mandrel by holding screw, and the large end sleeve of guide pin bushing is at least arranged with one group of through hole, and jacking block is placed in through hole; Jacking block outer end is cambered surface and radial direction arranges groove, and the inner is set to the conical surface, and matches with the cone of tapered sleeve; The groove inner ring of jacking block has installed around ring spring.
2. the long excircle of barrel-shaped parts Special Fixture for Machining of one according to claim 1, is characterized in that, between described tapered sleeve and locking nut, axle sleeve is housed.
CN201310225542.4A 2013-06-07 2013-06-07 A kind of long excircle of barrel-shaped parts Special Fixture for Machining Active CN103252515B (en)

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CN201310225542.4A CN103252515B (en) 2013-06-07 2013-06-07 A kind of long excircle of barrel-shaped parts Special Fixture for Machining

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CN201310225542.4A CN103252515B (en) 2013-06-07 2013-06-07 A kind of long excircle of barrel-shaped parts Special Fixture for Machining

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CN103252515B true CN103252515B (en) 2016-04-06

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CN105345055B (en) * 2015-11-12 2017-10-03 贵州凯星液力传动机械有限公司 A kind of clamping device suitable for thin-wall barrel
CN105522182A (en) * 2016-02-25 2016-04-27 四川聚能核技术工程有限公司 Internal expansion centering clamp and application thereof
CN106112709A (en) * 2016-08-25 2016-11-16 浙江通力重型齿轮股份有限公司 Adjustable outer core grinding axle clamp for machining
CN106392117A (en) * 2016-11-16 2017-02-15 天津市源泉机电设备制造有限公司 Hollow shell machining fixture
CN106736770B (en) * 2016-12-26 2019-12-20 南通百盛精密机械有限责任公司 Special fixture for processing excircle of optical sighting telescope body
CN106736774A (en) * 2017-02-24 2017-05-31 山东豪迈机械科技股份有限公司 Link-type self-centering universal fixturing
CN108031880B (en) * 2017-11-01 2020-07-28 厦工(三明)重型机器有限公司 Wedge internal expansion type centering device and centering method
CN109513960B (en) * 2018-11-23 2021-03-16 贵州航天风华精密设备有限公司 Expansion device for processing thin-wall cylindrical part
CN109940526B (en) * 2019-04-17 2020-11-27 中国航发湖南动力机械研究所 Conical surface centering structure and assembly method
CN110303428B (en) * 2019-06-28 2021-02-19 山东国晶新材料有限公司 Centering and clamping device for ceramic thin-wall sleeve part and working method of centering and clamping device
CN112611302A (en) * 2020-11-27 2021-04-06 松下压缩机(大连)有限公司 Measuring device for detecting perpendicularity of crankshaft and upper support of compressor
CN113059490A (en) * 2021-03-09 2021-07-02 广东今科机床有限公司 Adjustable shaft core grinding clamp

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CN102554301A (en) * 2012-02-12 2012-07-11 唐维刚 Machine tool fixture for machining sleeve parts
CN202317099U (en) * 2011-11-22 2012-07-11 贵州航天乌江机电设备有限责任公司 Fixture for processing part with step hole
CN202356655U (en) * 2011-11-01 2012-08-01 龙岩理尚精密机械有限公司 Automatic centralizer for machining sleeve parts
CN203281915U (en) * 2013-06-07 2013-11-13 新余钢铁集团有限公司 Clamp for long-cylinder part outer circle machining

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20314255U1 (en) * 2003-09-13 2003-11-06 Isad Electronic Sys Gmbh & Co Rapid clamping chuck for spinning thin workpieces has a threaded fastener with two interacting tapering thrust sleeves to grip the inside of the mounting aperture of the workpiece
CN202356655U (en) * 2011-11-01 2012-08-01 龙岩理尚精密机械有限公司 Automatic centralizer for machining sleeve parts
CN202317099U (en) * 2011-11-22 2012-07-11 贵州航天乌江机电设备有限责任公司 Fixture for processing part with step hole
CN102554301A (en) * 2012-02-12 2012-07-11 唐维刚 Machine tool fixture for machining sleeve parts
CN203281915U (en) * 2013-06-07 2013-11-13 新余钢铁集团有限公司 Clamp for long-cylinder part outer circle machining

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