CN104551072B - Bipyramid wedge self-centering fixture - Google Patents

Bipyramid wedge self-centering fixture Download PDF

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Publication number
CN104551072B
CN104551072B CN201410760509.6A CN201410760509A CN104551072B CN 104551072 B CN104551072 B CN 104551072B CN 201410760509 A CN201410760509 A CN 201410760509A CN 104551072 B CN104551072 B CN 104551072B
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China
Prior art keywords
pull bar
wedge
cone core
activity cone
mandrel
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CN201410760509.6A
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Chinese (zh)
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CN104551072A (en
Inventor
汪舵海
孙书义
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANHUI WHITE RABBIT LAKE POWER Co Ltd
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ANHUI WHITE RABBIT LAKE POWER Co Ltd
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Priority to CN201410760509.6A priority Critical patent/CN104551072B/en
Publication of CN104551072A publication Critical patent/CN104551072A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B31/00Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/40Expansion mandrels
    • B23B31/42Expansion mandrels characterised by features relating primarily to remote control of the gripping means

Abstract

The invention provides a kind of bipyramid wedge self-centering fixture, can be consolidated with cylinder cover inner hole radial positioning, clamping, workpiece is easy for going up and down, and cylinder jacket is respectively to uniform force, and machining accuracy is high.It includes the mandrel being connected to through flange on lathe, it is characterised in that:The mandrel inner chamber is provided with pull bar, and the pull bar is connected in flange side with hydraulic cylinder piston;On described mandrel fixed axoid is cut with along its excircle, activity cone core is set with described pull bar, holding set is set with pull bar between the fixed axoid and activity cone core, described to keep set front end to be provided with the preceding wedge matched with fixed axoid, the holding set rear end is provided with the rear wedge matched with activity cone core;Terminal pad is set with pull bar on the outside of the activity cone core, the terminal pad is fixed on pull bar through multiple nuts.

Description

Bipyramid wedge self-centering fixture
Technical field
The present invention relates to auto parts and components clamp for machining, and in particular to a kind of cylinder packaged clamp.
Background technology
Gas engine part major part cylinder jacket industry tradition roughing technique is rough bore, then to rough turn cylindrical.Slightly Bore hole positioning is to make cylindrical tight with plane locating clip with cylinder liner blank two ends.Cylinder liner blank is centrifugal casting, both ends of the surface The depth of parallelism and it is cylindrical be less rule.So cylinder jacket inside and outside circle allowance it is very big [7 millimeters of Excircle machining amount (diameter value), 9-10 millimeters of endoporus processing capacity (diameter value)].
By quantitative pouring, endoporus obtains good surface quality to the advantage of centrifugal casting, and hole size tolerance can control At IT14 grades(About 1 millimeter), internal-external circle concentricity can be controlled in IT11 grades (0.22 millimeter).The roughing skill of so cylinder jacket can With the rough turn cylindrical inclined both ends of the surface of Internal hole positioning, rough turn cylindrical, shortage adaptation in the prior art is then positioned with cylindrical and both ends of the surface The clamps of above-mentioned technique.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of bipyramid wedge self-centering fixture, can be with cylinder jacket Hole radial positioning, clamping is consolidated, and workpiece is easy for going up and down, and cylinder jacket is respectively to uniform force, and machining accuracy is high.
In order to solve the above technical problems, bipyramid wedge self-centering fixture of the invention, including be connected on lathe through flange Mandrel, it is characterised in that:The mandrel inner chamber is provided with pull bar, and the pull bar is connected in flange side with hydraulic cylinder piston; Fixed axoid is cut with along its excircle on described mandrel, activity cone core, the fixed axoid are set with described pull bar Set is kept with being set with the pull bar between activity cone core, the holding set front end is provided with before being matched with fixed axoid tiltedly Wedge, the holding set rear end is provided with the rear wedge matched with activity cone core;It is set with pull bar on the outside of the activity cone core Terminal pad, the terminal pad is fixed on pull bar through multiple nuts.
After employing above-mentioned technical proposal, by hydraulic cylinder piston tensile ties, through terminal pad pushes on movable cone core and guarantor Set is held, preceding wedge, rear wedge, from inner side tensioner workpiece, realize stabilizing grip along conical surface radial motion, unclamp hydraulic cylinder piston When, radial pressure is disappeared, and workpiece can be removed, easy for going up and down;Due to before multiple wedge and multiple after wedge in workpiece lumen It is uniformly distributed along the circumference, thus cylinder jacket is each to uniform force, and deformation is not produced, machining accuracy is high.
After the completion of clamping, workpiece is interlocked with preceding wedge, rear wedge, will not be unclamped naturally, in order to solve this problem, the present invention Multiple pins further are disposed radially in the middle part of described holding set, the pin is fixed through lock-screw with activity cone core Connection.When hydraulic cylinder piston is moved to right, activity cone core drives through multiple pins and keeps set to move to right, and preceding wedge, retread radial wedge pressure Disappear, workpiece is unclamped automatically.
Preceding wedge outer surface described in is provided with annular groove, and preceding wedge auxiliary positioning spring is provided with described annular groove; Rear wedge outer surface described in is provided with annular groove, and rear wedge auxiliary positioning spring is provided with described annular groove.Further increase Strong locating effect between preceding wedge, rear wedge and workpiece.
Sealing ring is provided with the axle for keeping set binding site, holding can be limited and be enclosed within axial stroke.
Brief description of the drawings
Fig. 1 is the structural representation of bipyramid wedge self-centering fixture of the invention;
Fig. 2 is sectional views of the Fig. 1 along line A-A.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, bipyramid wedge self-centering fixture of the invention, including the mandrel 2 on lathe is connected to through flange 1, It is characterized in that:The inner chamber of the mandrel 2 is provided with pull bar 3, and the pull bar 3 is connected in the side of flange 1 with hydraulic cylinder piston 4;Institute Fixed axoid 20 is cut with along its excircle on the mandrel 2 stated, activity cone core 5, the fixed cone are set with described pull bar 3 Holding set 6 is set with pull bar 3 between face 20 and activity cone core 5, it is described to keep 6 front ends of set to be provided with and fixed axoid 20 The preceding wedge 7 matched somebody with somebody, it is described to keep 6 rear ends of set to be provided with the rear wedge 8 matched with activity cone core 5;The outside of the activity cone core 5 Terminal pad 9 is set with pull bar 3, the terminal pad 9 is fixed on pull bar 3 through multiple nuts 90.
As shown in Figure 2, in axial direction, preceding wedge 7 can be covered on 6 along keeping set 6 to slide in order to preceding wedge 7 is assembled into holding, Various assembling modes can be taken, as one of implementation, some fins 60 is provided with the described excircle for keeping cover 6, The inner chamber of described preceding wedge 7 matches setting groove accordingly, and groove coordinates with the gap of fin 60, realizes relative slip.
The described middle part of holding set 6 has been disposed radially multiple pins 61, and the pin 61 is through lock-screw 62 and activity Cone core 5 is fixedly connected.
The outer surface of preceding wedge 7 described in is provided with annular groove, and preceding wedge auxiliary positioning spring is provided with described annular groove 70;The outer surface of rear wedge 8 described in is provided with annular groove, and rear wedge auxiliary positioning spring 80 is provided with described annular groove.
Sealing ring 21 is provided with the axle 2 for keeping 6 binding sites of set.
Clamping process of the present invention:Cylinder jacket 10 is sleeved on outside preceding wedge 7, rear wedge 8, hydraulic cylinder piston 4 is moved to left, through drawing Bar 3 tenses terminal pad 9, activity cone core 5, keeps set 6 successively, and preceding wedge 7 is along fixed axoid 20, rear wedge 8 along activity cone core 5 The conical surface is moved radially, and locking cylinder covers 10 inner chambers, then can be processed operation.
Blanking process of the present invention:Hydraulic cylinder piston 4 is moved to right, and axial compressive force disappears, and activity cone core 5 is moved to right, the band of distribution 61 Dynamic to keep set 6 to move to right, preceding wedge 7, the radial pressure of rear wedge 8 are disappeared, and cylinder jacket 10 can be removed.

Claims (1)

1. a kind of bipyramid wedge self-centering fixture, including through flange(1)It is connected to the mandrel on lathe(2), it is characterised in that:Institute State mandrel(2)Inner chamber is provided with pull bar(3), the pull bar(3)In flange(1)Side and hydraulic cylinder piston(4)Connection;Described Mandrel(2)On be cut with fixed axoid along its excircle(20), described pull bar(3)On be set with activity cone core(5), it is described solid Determine the conical surface(20)With activity cone core(5)Between pull bar(3)On be set with holding set(6), it is described to keep set(6)Front end is provided with With fixed axoid(20)The preceding wedge of matching(7), it is described to keep set(6)Rear end is provided with and activity cone core(5)What is matched retreads Wedge(8);The activity cone core(5)The pull bar in outside(3)On be set with terminal pad(9), the terminal pad(9)Through multiple nuts (90)It is fixed on pull bar(3)On;Described holding set(6)Middle part has been disposed radially multiple pins(61), the pin(61) Through lock-screw(62)With activity cone core(5)It is fixedly connected;Preceding wedge described in(7)Outer surface is provided with annular groove, described Preceding wedge auxiliary positioning spring is provided with annular groove(70);Rear wedge described in(8)Outer surface is provided with annular groove, described ring Rear wedge auxiliary positioning spring is provided with groove(80);Covered with holding(6)The mandrel of binding site(2)On be provided with sealing ring (21).
CN201410760509.6A 2014-12-12 2014-12-12 Bipyramid wedge self-centering fixture Active CN104551072B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410760509.6A CN104551072B (en) 2014-12-12 2014-12-12 Bipyramid wedge self-centering fixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410760509.6A CN104551072B (en) 2014-12-12 2014-12-12 Bipyramid wedge self-centering fixture

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CN104551072A CN104551072A (en) 2015-04-29
CN104551072B true CN104551072B (en) 2017-06-30

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110027983B (en) * 2019-04-23 2020-11-06 杭州富阳春江汽车空调厂 Prefabricated T roof beam template L type hoist
CN114770025A (en) * 2022-06-21 2022-07-22 四川航天长征装备制造有限公司 Double-angle wedge sliding block piston ring

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87201957U (en) * 1987-03-23 1988-08-31 长春第一汽车制造厂 Clamp for machining outside circularity of cylinder sleeve of motor
CN202336601U (en) * 2011-10-24 2012-07-18 河南森茂机械有限公司 Pneumatic fixture for processing cylinder sleeve
CN203061915U (en) * 2012-12-12 2013-07-17 重庆巨康建材有限公司 Wedge mechanism of hydraulic type expanding mandrel
CN203418134U (en) * 2013-08-21 2014-02-05 扬州五亭桥缸套有限公司 High-precision cylinder sleeve outer circle finish-turning fixture
CN203944863U (en) * 2014-07-17 2014-11-19 瑞安市作权冲压件有限公司 A kind of clamping device
CN204449379U (en) * 2014-12-12 2015-07-08 安徽白兔湖动力股份有限公司 Bipyramid wedge self-centering fixture

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10059209A1 (en) * 2000-11-29 2002-06-13 Roehm Gmbh Clamping device for a hollow shaft

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87201957U (en) * 1987-03-23 1988-08-31 长春第一汽车制造厂 Clamp for machining outside circularity of cylinder sleeve of motor
CN202336601U (en) * 2011-10-24 2012-07-18 河南森茂机械有限公司 Pneumatic fixture for processing cylinder sleeve
CN203061915U (en) * 2012-12-12 2013-07-17 重庆巨康建材有限公司 Wedge mechanism of hydraulic type expanding mandrel
CN203418134U (en) * 2013-08-21 2014-02-05 扬州五亭桥缸套有限公司 High-precision cylinder sleeve outer circle finish-turning fixture
CN203944863U (en) * 2014-07-17 2014-11-19 瑞安市作权冲压件有限公司 A kind of clamping device
CN204449379U (en) * 2014-12-12 2015-07-08 安徽白兔湖动力股份有限公司 Bipyramid wedge self-centering fixture

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