CN201376103Y - Clamping expansion core jig for lathe machining of ultra-long and large workpieces - Google Patents

Clamping expansion core jig for lathe machining of ultra-long and large workpieces Download PDF

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Publication number
CN201376103Y
CN201376103Y CN200920038163U CN200920038163U CN201376103Y CN 201376103 Y CN201376103 Y CN 201376103Y CN 200920038163 U CN200920038163 U CN 200920038163U CN 200920038163 U CN200920038163 U CN 200920038163U CN 201376103 Y CN201376103 Y CN 201376103Y
Authority
CN
China
Prior art keywords
push rod
jig
workpieces
radial slider
clamping
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
CN200920038163U
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Chinese (zh)
Inventor
张希平
周开华
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.)
Jiangsu Shuguang Petroleum Drilling Equipment Co Ltd
Original Assignee
Jiangsu Shuguang Petroleum Drilling Equipment 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 Jiangsu Shuguang Petroleum Drilling Equipment Co Ltd filed Critical Jiangsu Shuguang Petroleum Drilling Equipment Co Ltd
Priority to CN200920038163U priority Critical patent/CN201376103Y/en
Application granted granted Critical
Publication of CN201376103Y publication Critical patent/CN201376103Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a clamping expansion core jig for the lathe machining of ultra-long and large workpieces. The jig mainly comprises a jig body, a push rod and radial sliding blocks, wherein the push rod is mounted in an inner hole of the jig body; a cone-shaped part of the push rod is in contact with the radial sliding blocks located in lateral through holes of the jig body; the sliding blocks number three to four; and a rubber ring is arranged at the excircle of each sliding block. When in use, the jig body is connected with a bidirectional automatic hydraulic chuck, so that a hydraulic piston inside the chuck can drive the push rod to move, which further drives the radial sliding blocks to simultaneously tighten inner holes at the two end of a workpiece by expansion. The expansion core jig has the advantages that the high intensity and the large expansion-tightening force can meet the clamping requirements of the lathe machining of ultra-long and large workpieces; a head-turning lathe is not required during the machining, thereby eliminating the problem of jointing and guaranteeing the coaxiality precision and relevant machining precisions of workpieces; and apart from the convenient operation and the high production efficiency, the sliding blocks can be replaced so as to meet the clamping of workpieces with different apertures.

Description

The large-piece processing clamping core anchor clamps that expand
Technical field
The utility model relates to a kind of clamp for turning, particularly for the bloated core anchor clamps of the processing clamping of large-piece.
Background technology
The clamping anchor clamps were to adopt a folder one top to add the version of centre frame again when generally speaking, large-piece turning was processed.One folder, one top adds centre frame again and is meant: an end of clamping workpiece with spindle chuck, withstand the other end of workpiece with the live center of tailstock, use the middle part of centre frame holding workpieces again, this installation way is less demanding at internal-external circle concentricity, the uncomplicated workpiece of surface configuration is fine, but the large-piece of joint of petroleum drill rod one class just is difficult to reach processing request.Adopt a folder one top to add the installation way of centre frame again, workpiece reverses end for end to process always, can not ward off to have coaxial sum of errors indirect cutter problem with exempting from.As remove centre frame, only, solved indirect cutter problem, but tackling the live center requirement mutually will improve, and have a live center strength problem with a folder one top.But also to reverse end for end turning, then the axiality problem still exists.Add the clamping structure of chicken core chuck as for the Double Tops point, can solve indirect cutter problem, improve the axiality of workpiece the machining slender shaft of small workpiece.But just not all right concerning large-piece, Double Tops points requirement of strength is high especially, and when using live center, all there are certain problem in feed and withdrawing during turning.
The utility model content
The large-piece processing clamping that the purpose of this utility model is to provide a kind of easy to operate, reliable clamping, can improve workpiece coaxial accuracy and Surface Machining precision is with the core anchor clamps that expand.
The technical solution of the utility model is: the core anchor clamps that expand mainly are made of clamp body, push rod and one group of radial slider, described push rod is located in the clamp body endoporus, one section conical section is arranged on the push rod, radial slider is located in the side direction through hole of clamp body, both are slidingly matched by one-tenth, and this radial slider has 3~4, circumferentially evenly distribute along clamp body, radial slider conical section inboard and on the push rod contacts, and the radial slider outside is positioned on the same face of cylinder.
Further scheme is that described radial slider is 3; Be provided with rubber ring in the deep-slotted chip breaker in the described radial slider outside; The conical surface gradient of described push rod conical section is 7 °~9 °; Described push rod and radial slider contact position are provided with rolling element.
When clamping anchor clamps of the present utility model use, clamp body one end is connected with two-way automatic hydraulic chuck, because two-way automatic hydraulic chuck axiality is good, keep strokes, expand core anchor clamps intensity height, tension force is big, thereby can satisfy the clamping requirement of large-piece Vehicle Processing, do not need to reverse end for end car in the processing, do not have the cutter problem that connects, can guarantee axiality and phase closing precision.Change as hole dimension in the workpiece, can select one group of radial slider of various outer diameter for use, easy to operate, can enhance productivity.Push rod and radial slider contact site then make this clamping further flexible and efficient as being provided with rolling elements such as roller, steel ball in the bloated core anchor clamps.
Description of drawings
Fig. 1 is a used bloated core anchor clamps schematic diagram in the utility model;
Fig. 2 is an A-A place profile among Fig. 1.
The specific embodiment
Consult accompanying drawing, present embodiment structure and behaviour in service are described: an end of the clamp body 3 of a pair of bloated core anchor clamps is connected with two-way automatic hydraulic chuck respectively, the other end stretches in the endoporus that workpiece 5 (joint of petroleum drill rod) processes, start two-way automatic hydraulic chuck, the push rod 4 that drives in the anchor clamps by the hydraulic piston in the chuck protracts, rely on the taper seat promotion radial slider 2 of 7 °~9 ° of gradients of push rod front end outwards to move in the footpath simultaneously, swelling workpiece endoporus two ends can machine.Three evenly distribution, identical radial slider 2 are respectively arranged in the bloated core anchor clamps of each end, be provided with twice rubber ring 1 in the deep-slotted chip breaker at same group of radial slider cylindrical place, after machining, push rod retreats, and radial slider is inwardly shunk, and unclamps workpiece.

Claims (5)

1, a kind of large-piece processing clamping core anchor clamps that expand, it is characterized in that these anchor clamps mainly are made of clamp body, push rod and one group of radial slider, described push rod is located in the clamp body endoporus, one section conical section is arranged on the push rod, and radial slider is located in the side direction through hole of clamp body, and both are slidingly matched by one-tenth, this radial slider has 3~4, circumferentially evenly distribute along clamp body, radial slider conical section inboard and on the push rod contacts, and the radial slider outside is positioned on the same face of cylinder.
2, by the described large-piece processing clamping of the claim 1 core anchor clamps that expand, it is characterized in that described radial slider is 3.
3, by the described large-piece processing clamping of claim 1 with the core anchor clamps that expand, it is characterized in that being provided with rubber ring in the deep-slotted chip breaker in the described radial slider outside.
4, by the described large-piece processing clamping of the claim 1 core anchor clamps that expand, the conical surface gradient that it is characterized in that described push rod conical section is 7 °~9 °.
5, by the described large-piece processing clamping of the claim 1 core anchor clamps that expand, it is characterized in that described push rod and radial slider contact position are provided with rolling element.
CN200920038163U 2009-01-16 2009-01-16 Clamping expansion core jig for lathe machining of ultra-long and large workpieces Expired - Fee Related CN201376103Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920038163U CN201376103Y (en) 2009-01-16 2009-01-16 Clamping expansion core jig for lathe machining of ultra-long and large workpieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920038163U CN201376103Y (en) 2009-01-16 2009-01-16 Clamping expansion core jig for lathe machining of ultra-long and large workpieces

Publications (1)

Publication Number Publication Date
CN201376103Y true CN201376103Y (en) 2010-01-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN200920038163U Expired - Fee Related CN201376103Y (en) 2009-01-16 2009-01-16 Clamping expansion core jig for lathe machining of ultra-long and large workpieces

Country Status (1)

Country Link
CN (1) CN201376103Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102847969A (en) * 2012-09-17 2013-01-02 江苏飞船股份有限公司 Double-end core expansion type mandrel fixture
CN103111635A (en) * 2013-02-25 2013-05-22 重庆市国毅机械厂 Dual-power-head machine tool
CN104400051A (en) * 2014-10-30 2015-03-11 无锡职业技术学院 Combined-type variable-diameter core-shaft clamp for machining

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102847969A (en) * 2012-09-17 2013-01-02 江苏飞船股份有限公司 Double-end core expansion type mandrel fixture
CN103111635A (en) * 2013-02-25 2013-05-22 重庆市国毅机械厂 Dual-power-head machine tool
CN104400051A (en) * 2014-10-30 2015-03-11 无锡职业技术学院 Combined-type variable-diameter core-shaft clamp for machining

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Legal Events

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

Granted publication date: 20100106

Termination date: 20180116

CF01 Termination of patent right due to non-payment of annual fee