CN103252515A - Special fixture for processing outer circle of long-cylinder part - Google Patents

Special fixture for processing outer circle of long-cylinder part Download PDF

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Publication number
CN103252515A
CN103252515A CN2013102255424A CN201310225542A CN103252515A CN 103252515 A CN103252515 A CN 103252515A CN 2013102255424 A CN2013102255424 A CN 2013102255424A CN 201310225542 A CN201310225542 A CN 201310225542A CN 103252515 A CN103252515 A CN 103252515A
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CN
China
Prior art keywords
mandrel
sleeves
long
taper
special fixture
Prior art date
Application number
CN2013102255424A
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Chinese (zh)
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CN103252515B (en
Inventor
叶华辉
周素琪
刘俊良
张琪锋
刘少荣
Original Assignee
新余钢铁集团有限公司
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Publication date
Application filed by 新余钢铁集团有限公司 filed Critical 新余钢铁集团有限公司
Priority to CN201310225542.4A priority Critical patent/CN103252515B/en
Publication of CN103252515A publication Critical patent/CN103252515A/en
Application granted granted Critical
Publication of CN103252515B publication Critical patent/CN103252515B/en

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Abstract

The invention relates to a machining fixture, and discloses a special fixture for processing an outer circle of a long-cylinder part. Guide sleeves, taper sleeves and lock nuts are mounted at the two ends of a central spindle of the special fixture symmetrically and sequentially from inside to outside; the guide sleeves are in large-small end structures; the small ends of the guide sleeves are fixed with the central spindle by set screws; through holes are formed in casings at the large ends of the guide sleeves; ejection blocks are arranged in the through holes; cambered surfaces and grooves are arranged and formed at the outer ends of the ejection blocks; taper surfaces are arranged at the inner ends of the ejection blocks; cones of the taper sleeves eject the taper surfaces of the ejection blocks; and annular springs are mounted around the grooves of the ejection blocks. According to the special fixture, radial ejection block ejecting workpieces are added on the basis of axial clamping; radial motion during the processing of the outer circles of the workpieces is avoided; the centering precision is high; with the adoption of the matched design of the guide sleeves and the taper sleeves, and added shaft sleeves, centering clamping can be adjusted conveniently according to the length and an inner hole of the long-cylinder part; and the generality of the tool fixture for processing the outer circle of the long-cylinder part is improved.

Description

A kind of long tube kind part cylindrical Special Fixture for Machining

Technical field

The present invention relates to a kind of clamping tool for machine work, relate in particular to a kind of long tube kind part cylindrical Special Fixture for Machining.

Background technology

Long tube kind part cylindricalo grinding and turning processing adopt mandrel+support ring with the endoporus positioning and clamping usually.The clamping structure of the mandrel+support ring of Shi Yonging mostly was fixed one to one in the past: namely the long tube kind part of a kind of length specification, endoporus can only dispose a kind of mandrel+support ring anchor clamps by Element Design.The cylindricalo grinding of the long barrel part of different length, endoporus and turning processing need with corresponding different mandrel+support ring anchor clamps, and this makes an enterprise need dispose a lot of mandrels+support ring anchor clamps, and quantity is various, and management inconvenience has increased anchor clamps, the processing cost height.In order to install and remove mandrel, the mandrel support ring cooperates with long tube endoporus need certain clearance simultaneously.The gap is big to influence centering precision, mandrel mounting or dismounting inconveniences that the gap is little.Even the hole of same size is subjected to dimensional tolerance to influence also difficult control of gap.The mode that also has a kind of positioning and clamping is that the two-port of circle in long tube kind part adopts the taper sheath location to clamp, this positioning and clamping mode can be because two-port contact position precision, and influence the quality of part processing, so above-mentioned dual mode, even the hole of same size is subjected to dimensional tolerance to influence also difficult control machining accuracy of gap.

Summary of the invention

Technical problem to be solved by this invention is to improve the centering precision of long tube kind part cylindricalo grinding and turning machining, improves the versatility of frock clamp.

The present invention takes following technical scheme, a kind of long tube kind part cylindrical Special Fixture for Machining, comprise mandrel, it is characterized in that, the two ends symmetry of described mandrel is equipped with guide pin bushing, tapered sleeve and locking nut successively from inside to outside, and guide pin bushing is big or small end structure, and the guide pin bushing small end is fixedlyed connected with mandrel by holding screw, at least be arranged with one group of through hole on the big end sleeve of guide pin bushing, jacking block places in the through hole; The jacking block outer end is cambered surface and groove radially is set that the inner is set to the conical surface, and matches with the cone of tapered sleeve; The groove of jacking block is interior around ring spring is housed.

Between described tapered sleeve and the locking nut axle sleeve is housed.

When the present invention uses, choose the mandrel of a long tube kind part earlier according to Workpiece length, if mandrel is long, do not possess clamping, the axle sleeve that then is equipped with respective length is contained between locking nut and the tapered sleeve.Adjust guide pin bushing relevant position on mandrel according to Workpiece length, and be fixed with holding screw; Unclamp locking nut, tapered sleeve is outwards spurred, jacking block shrinks under the ring-spring effect inwards, when jacking block is contracted to less than the workpiece aperture, mandrel is packed in the workpiece hole, tapered sleeve is promoted inwards again.Make jacking block rise the supporting workpiece endoporus, screw locking nut then, finish the centering clamping.Unclamp nut pulling tapered sleeve during the dismounting mandrel, can easily take out mandrel.

Advantage of the present invention is that original support ring is designed to guide pin bushing, tapered sleeve fit system, increases radially top tight workpiece of jacking block on the basis that axially clamps, and excircle of workpiece processing can radial-play, the centering precision height; The matching design of guide pin bushing, tapered sleeve, the axle sleeve of increase can be regulated the centering clamping according to length, the endoporus of long tube kind part easily, no longer need fixedly one to one, have improved the versatility of long tube kind part cylindrical machining tool fixture.

Description of drawings

Fig. 1 is structural representation of the present invention.

Fig. 2 is A place structure for amplifying schematic diagram among Fig. 1.

Fig. 3 is the schematic diagram of guide pin bushing 3 among Fig. 1.

Fig. 4 is the axial arrangement schematic diagram of mandrel 1, tapered sleeve 2 and jacking block 4 combinations.

Among the figure: 1. mandrel, 2. tapered sleeve, 3. guide pin bushing, 4. jacking block, 5. locking nut, 6. ring spring, 7. holding screw is 8. grown a workpiece, 9. axle sleeve.

The specific embodiment

The invention will be further described below in conjunction with drawings and Examples, referring to Fig. 1 to Fig. 4, a kind of long tube kind part cylindrical Special Fixture for Machining, comprise mandrel 1, it is characterized in that the two ends symmetry of described mandrel 1 is equipped with guide pin bushing 3, tapered sleeve 2 and locking nut 5 successively from inside to outside, guide pin bushing 3 is big or small end structure, guide pin bushing 3 small ends are fixedlyed connected with mandrel 1 by holding screw 7, are arranged with one group of through hole at least on the guide pin bushing 1 big end sleeve, and jacking block 4 places in the through hole; Jacking block 4 outer ends are cambered surface and groove radially are set that the inner is set to the conical surface, and matches with the cone of tapered sleeve 2; The groove of jacking block 4 is interior around ring spring 6 is housed.

Between described tapered sleeve 2 and the locking nut 5 axle sleeve 9 is housed.

Embodiment:A preferred embodiments of the present invention is as follows, as shown in Figures 1 to 4, a kind of long tube kind part cylindrical Special Fixture for Machining, by forming with lower member, mandrel 1 is one, and axle sleeve 9, tapered sleeve 2 and guide pin bushing 3 respectively are two, jacking block 4 is eight, ring-spring 6 is two, and holding screw 7 is eight, and locking nut 5 is four.Guide pin bushing 3 is big or small end structure, and its small end is fixed on the mandrel 1 by four holding screws 7, is arranged with one group of through hole at least on the guide pin bushing 3 big end sleeves, and present embodiment is symmetrical arranged two groups of four through holes.Jacking block 4 all is installed in the through hole, and jacking block 4 outer ends are cambered surface, and jacking block 4 the inners are provided with the conical surface, have the outer end of cambered surface also radially to be provided with groove, have the inner of the conical surface to install towards mandrel 1, and the conical surface of jacking block 4 contact with the cone cone match of tapered sleeve 2.Ring-spring 6 is stuck in the groove of four jacking blocks 4, and the jacking block 4 that is equipped with in 3 four through holes of guide pin bushing is blocked, and on the outer end mandrel 1 of tapered sleeve 2 locking nut 5 is installed, and tapered sleeve 2 is regulated by locking nut 5 and made jacking block 4 movable in through hole.Mobile at mandrel 1 by tapered sleeve 2, make jacking block 4 liftings, thereby hold out against the endoporus of long tube workpiece 8, realize the purpose of the long tube of convenient mounting or dismounting workpiece 8.When the present invention uses, choose the mandrel 1 of a long tube kind part earlier according to long tube workpiece 8 length, if mandrel 1 is long, do not possess clamping, the axle sleeve 9 that then is equipped with respective length is contained between locking nut 5 and the tapered sleeve 2, can push up the endoporus at long tube workpiece 8 two ends to guarantee jacking block 4.

Using method of the present invention is as follows: first position according to the good guide pin bushing 3 of long tube workpiece 8 length adjustment, and with holding screw 7 that itself and mandrel 1 is fixing; Mandrel 1 is packed in the hole of long tube workpiece 8, again tapered sleeve 2 is promoted inwards.Jacking block 4 is risen support long tube workpiece 8 endoporus, screw locking nut 5 then, finish the centering clamping.Unclamp locking nut 5 pulling tapered sleeves 2 during dismounting mandrel 1, can easily take out mandrel 1.

The invention solves the defective of traditional structure mandrel clamping, a kind of mandrel adds Upper shaft sleeve can clamping length, interior hole dimension multiple long tube kind part within the specific limits, the centering precision height, and mounting or dismounting are convenient.

Claims (2)

1. one kind long tube kind part cylindrical Special Fixture for Machining, comprise mandrel, it is characterized in that, the two ends symmetry of described mandrel is equipped with guide pin bushing, tapered sleeve and locking nut successively from inside to outside, guide pin bushing is big or small end structure, the guide pin bushing small end is fixedlyed connected with mandrel by holding screw, is arranged with one group of through hole at least on the big end sleeve of guide pin bushing, and jacking block places in the through hole; The jacking block outer end is cambered surface and groove radially is set that the inner is set to the conical surface, and matches with the cone of tapered sleeve; The groove of jacking block is interior around ring spring is housed.
2. a kind of long tube kind part cylindrical Special Fixture for Machining according to claim 1 is characterized in that, between described tapered sleeve and the 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 CN103252515B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310225542.4A CN103252515B (en) 2013-06-07 2013-06-07 A kind of long excircle of barrel-shaped parts Special Fixture for Machining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310225542.4A CN103252515B (en) 2013-06-07 2013-06-07 A kind of long excircle of barrel-shaped parts Special Fixture for Machining

Publications (2)

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CN103252515A true CN103252515A (en) 2013-08-21
CN103252515B CN103252515B (en) 2016-04-06

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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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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104907595A (en) * 2015-06-23 2015-09-16 宁波市鸿腾机电有限公司 Inner support expansion fixture and cutting technology of ultra-thin wall large-scale cylinder type cutting workpiece
CN105234796A (en) * 2015-10-19 2016-01-13 广州珠江钢琴集团股份有限公司 Automatic polishing wheel alignment type polishing machine and automatic alignment method thereof
CN105252032A (en) * 2015-10-13 2016-01-20 永安市培鑫工贸有限公司 Valve body clamp
CN105345055A (en) * 2015-11-12 2016-02-24 贵州凯星液力传动机械有限公司 Clamping device suitable for thin-wall cylinder
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
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
CN106736770A (en) * 2016-12-26 2017-05-31 南通百盛精密机械有限责任公司 A kind of optical sight shank Excircle machining special fixture
CN109513960A (en) * 2018-11-23 2019-03-26 贵州航天风华精密设备有限公司 A kind of swelling device of processing thin-walled cylinder shape part

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
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

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104907595A (en) * 2015-06-23 2015-09-16 宁波市鸿腾机电有限公司 Inner support expansion fixture and cutting technology of ultra-thin wall large-scale cylinder type cutting workpiece
CN104907595B (en) * 2015-06-23 2017-06-09 宁波市鸿腾机电有限公司 The inner support swelling fixture and Cutting Process of ultra-thin-wall large-size cylinder body class cutting workpiece
CN105252032A (en) * 2015-10-13 2016-01-20 永安市培鑫工贸有限公司 Valve body clamp
CN105234796A (en) * 2015-10-19 2016-01-13 广州珠江钢琴集团股份有限公司 Automatic polishing wheel alignment type polishing machine and automatic alignment method thereof
CN105234796B (en) * 2015-10-19 2017-12-12 广州珠江钢琴集团股份有限公司 A kind of polishing wheel automatic aligning formula polishing machine and its automatic aligning method
CN105345055A (en) * 2015-11-12 2016-02-24 贵州凯星液力传动机械有限公司 Clamping device suitable for thin-wall cylinder
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
CN106736770A (en) * 2016-12-26 2017-05-31 南通百盛精密机械有限责任公司 A kind of optical sight shank Excircle machining special fixture
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
CN109513960A (en) * 2018-11-23 2019-03-26 贵州航天风华精密设备有限公司 A kind of swelling device of processing thin-walled cylinder shape part

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