CN203887253U - Outwards-pressing-type inner expansion clamp cover - Google Patents

Outwards-pressing-type inner expansion clamp cover Download PDF

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Publication number
CN203887253U
CN203887253U CN201420183745.1U CN201420183745U CN203887253U CN 203887253 U CN203887253 U CN 203887253U CN 201420183745 U CN201420183745 U CN 201420183745U CN 203887253 U CN203887253 U CN 203887253U
Authority
CN
China
Prior art keywords
sleeve
inner expansion
cone
expanding sleeve
spindle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420183745.1U
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Chinese (zh)
Inventor
黄泉龙
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.)
Jiangxi Jiangling Chassis Co Ltd
Original Assignee
Jiangxi Jiangling Chassis Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangxi Jiangling Chassis Co Ltd filed Critical Jiangxi Jiangling Chassis Co Ltd
Priority to CN201420183745.1U priority Critical patent/CN203887253U/en
Application granted granted Critical
Publication of CN203887253U publication Critical patent/CN203887253U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides an outwards-pressing-type inner expansion clamp cover. The clamp cover comprises a tailstock spindle and an inner expansion sleeve. The tailstock spindle is divided into an external cone, a spindle body and a handle part. The inner expansion sleeve is divided into an internal cone and a sleeve body. A clinging end face corresponding to a workpiece is arranged on the outer end face of the sleeve body of the inner expansion sleeve. The inner expansion sleeve is an elastic body. The internal cone of the inner expansion sleeve is in sliding connection with the external cone of the tailstock spindle in a cooperating manner. The inner wall of the sleeve body of the inner expansion sleeve is in cooperating connection with the spindle body of the tailstock spindle. According to the utility model, the workpiece is expanded from inside by the inner expansion sleeve, so ovality generated during rebounding can be effectively reduced. The clamp cover performs clamping by use of the pressing force of a tail stock of a machine tool completely without additional clamping force. Thus, a difficult in inner expansion-type elastic clamping in a tail stock end can be successively solved.

Description

A kind of outer top formula internal expanding chuck
Technical field
The utility model belongs to plant equipment field, relates to the outer top formula internal expanding chuck that a kind of tail stock uses.
Background technology
Lathe is very extensive in the use of manufacturing, and what in turning, generally face is not that axial workpiece is exactly pipe part.In the time of processing pipe part, conventional clamping is that two ends top top endoporus or spindle end press from both sides excircle of workpiece, top top inner hole of workpiece for tailstock end, be originally to adopt top endoporus mode at tailstock end group, the difficult point of which turning is to be easily out of shape in the time of processing light wall pipe class workpiece: on lathe, measuring workpieces is normal, but in the time that workpiece is measured after fixture takes out again, the ellipse that often has 0.04MM to 0.1MM not wait.The former of its generation produces irregular deformation by workpiece because toply contact inhomogeneously with inner hole of workpiece while holding out against, and process and take off rear workpiece resilience, thus existence ellipse.
General lathe main shaft end, as needs can design and produce internal expansion type spring chuck etc., is fixed on chuck to rotate with workpiece; But tailstock end is driven end, there is no to be used for fixing the space of spring chuck, thus generally can only be with top top endoporus at tailstock end, therefore, prior art need to improve.
Utility model content
The purpose of this utility model is to provide a kind of outer top formula internal expanding chuck for tail stock, effectively reduces the ovality after the turning of tubing workpiece, ensures its crudy.
The technical solution of the utility model: a kind of outer top formula internal expanding chuck, it comprises tail spindle and inner expanding sleeve, described tail spindle is divided into outer cone, axle body and shank, inner expanding sleeve is divided into inner cone and cover body, inner expanding sleeve cover body outer face is provided with the laminating end face corresponding with workpiece, inner expanding sleeve is elastomer, and the inner cone of inner expanding sleeve coordinates and is slidably connected with the outer cone of tail spindle, and the cover body inwall of inner expanding sleeve and the axle body of tail spindle are connected.
The outer cone front end face of described tail spindle is connected with block, and described block outside diameter is greater than the inner cone portlet diameter of inner expanding sleeve.
The laminating end face of described inner expanding sleeve cover body is provided with shoulder, the spacing connection of laminating end face of shoulder and workpiece.
The handle designs of described tail spindle is the Outer Taper being connected with the internal taper hole of alternate form rolling center.
The outer wall of the inner cone of described inner expanding sleeve and cover body connecting portion is provided with transition groove, and inwall is provided with transition shoulder.
The utility model adopts inner expanding sleeve from inside workpiece tensioner workpiece, because chuck is the distortion of rising of whole even circumferential, thereby ensures that when workpiece contacts be also whole circumferencial direction homogeneous deformation outward, so the ovality effectively producing when decreasing rebound.Clamping of the present utility model, utilizes tailstock tool pressure completely, does not need especially to apply chucking power.Therefore, this outer top formula internal expanding chuck has successfully solved a difficult problem for tailstock end employing internal expansion type elastic clamping.
Brief description of the drawings
Fig. 1 is the main TV structure schematic diagram of the utility model embodiment 1.
Fig. 2 is the main TV structure schematic diagram of inner expanding sleeve that the utility model is executed example 1.
Fig. 3 is the inner expanding sleeve side-looking structural representation that the utility model is executed example 1.
Detailed description of the invention
The utility model can specifically be implemented according to the technology in technical scheme, further illustrates embodiment with following non-limiting embodiment.
Embodiment 1:
Taking the SUV of Jiangling group automobile N350 front axle housing as example, for the cylindrical of this propons sleeve pipe of turning is to diameter 63+0.12+0.06mm, ensure this joint cylindrical length 72 ± 0.3mm, cylindrical Ra3.2mm etc., the tailstock centre using in processing be this outer top formula internal expanding chuck and alternate form rolling center group all-in-one-piece top, the Digit Control Machine Tool using is CAK6150D.
Outer top formula internal expanding chuck comprises tail spindle 1, inner expanding sleeve 2 and block 3 and fastening bolt 4.Described tail spindle 1 is divided into outer cone, axle body and shank, inner expanding sleeve 2 is divided into inner cone and cover body, inner expanding sleeve 2 overlaps body outer face and is provided with the laminating end face corresponding with workpiece 5, inner expanding sleeve 2 is elastomer, the inner cone of inner expanding sleeve 2 coordinates and is slidably connected with the outer cone of tail spindle 1, and the cover body inwall of inner expanding sleeve 2 and the axle body of tail spindle 1 are connected.
The outer cone front end face of described tail spindle 1 is connected with block 3, and block 3 is connected with the outer cone front end face of tail spindle 1 by fastening bolt 4, and described block 3 outside diameters are greater than the inner cone portlet diameter of inner expanding sleeve 2.
The laminating end face that described inner expanding sleeve 2 overlaps body is provided with shoulder, the spacing connection of laminating end face of shoulder and workpiece 5.
The handle designs of described tail spindle 1 is the Outer Taper being connected with the internal taper hole of alternate form rolling center.To insert in the internal taper hole of alternate form rolling center, thereby form one with alternate form rolling center.
The outer wall of the inner cone of described inner expanding sleeve 2 and cover body connecting portion is provided with transition groove, and inwall is provided with transition shoulder.
After described outer top formula internal expanding chuck and alternate form rolling center composition one, be connected by alternate form rolling center shank and tailstock tool.In the time that tailstock tool screws sinciput, workpiece 5 is pressed to machine tool chief axis end by the shoulder of inner expanding sleeve 2, in the time that spindle end cannot move forward again, the just relative inner expanding sleeve 2 of tail spindle 1 moves ahead, the inner cone relative sliding of the outer cone of tail spindle 1 and inner expanding sleeve 2, force inner expanding sleeve 2 to produce the outer distortion of rising along its male cone (strobilus masculinus), thus tensioner workpiece 5 inwalls, the clamping of realization to workpiece 5.
Respectively being of a size of of the outer top formula internal expanding chuck of the present embodiment: the outer outside diameter of inner expanding sleeve 2 is 52.4 ± 0.05 mm, and roughness is Ra0.8, and height of shoulder is 2.5mm, and interior coning angle is 30o ± 0.1o, and roughness is Ra0.8; Even circumferential is opened 8 grooves, every groove width 3 mm; Tail spindle 1 head tapering is 30o ± 0.1o, and large footpath, tapering is 42-0.2-0.4 mm, connects flat with cylindrical; Related unit is general marker method.
The present embodiment adopts inner expanding sleeve from inside workpiece tensioner workpiece, because chuck is the distortion of rising outward of whole even circumferential, thereby while ensureing workpiece contact, be also that whole circumferencial direction distortion is even, after processing, the ovality of excircle of workpiece size 63+0.12+0.06 mm is down to 0.01 mm to 0.02 mm by 0.08 mm to 0.12 mm left and right before it.

Claims (5)

1. an outer top formula internal expanding chuck, it comprises tail spindle (1) and inner expanding sleeve (2), it is characterized in that: described tail spindle (1) is divided into outer cone, axle body and shank, inner expanding sleeve (2) is divided into inner cone and cover body, inner expanding sleeve (2) cover body outer face is provided with the laminating end face corresponding with workpiece (5), inner expanding sleeve (2) is elastomer, and the inner cone of inner expanding sleeve (2) coordinates and is slidably connected with the outer cone of tail spindle (1), and the axle body of the cover body inwall of inner expanding sleeve (2) and tail spindle (1) is connected.
2. the outer top of one according to claim 1 formula internal expanding chuck, is characterized in that: the outer cone front end face of described tail spindle (1) is connected with block (3), and described block (3) outside diameter is greater than the inner cone portlet diameter of inner expanding sleeve (2).
3. the outer top of one according to claim 1 and 2 formula internal expanding chuck, is characterized in that: the handle designs of described tail spindle (1) is the Outer Taper being connected with the internal taper hole of alternate form rolling center.
4. the outer top of one according to claim 1 and 2 formula internal expanding chuck, is characterized in that: the shank of described tail spindle (1) is Outer Taper, and the internal taper hole of Outer Taper and alternate form rolling center is connected.
5. the outer top of one according to claim 1 and 2 formula internal expanding chuck, is characterized in that: the outer wall of the inner cone of described inner expanding sleeve (2) and cover body connecting portion is provided with transition groove, and inwall is provided with transition shoulder.
CN201420183745.1U 2014-04-16 2014-04-16 Outwards-pressing-type inner expansion clamp cover Expired - Fee Related CN203887253U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420183745.1U CN203887253U (en) 2014-04-16 2014-04-16 Outwards-pressing-type inner expansion clamp cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420183745.1U CN203887253U (en) 2014-04-16 2014-04-16 Outwards-pressing-type inner expansion clamp cover

Publications (1)

Publication Number Publication Date
CN203887253U true CN203887253U (en) 2014-10-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420183745.1U Expired - Fee Related CN203887253U (en) 2014-04-16 2014-04-16 Outwards-pressing-type inner expansion clamp cover

Country Status (1)

Country Link
CN (1) CN203887253U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103894641A (en) * 2014-04-16 2014-07-02 江西江铃底盘股份有限公司 Outer-ejection-type inner expansion clamping sleeve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103894641A (en) * 2014-04-16 2014-07-02 江西江铃底盘股份有限公司 Outer-ejection-type inner expansion clamping sleeve

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141022

Termination date: 20180416