CN202877950U - Tubular workpiece self-centering holding device - Google Patents

Tubular workpiece self-centering holding device Download PDF

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Publication number
CN202877950U
CN202877950U CN 201220565414 CN201220565414U CN202877950U CN 202877950 U CN202877950 U CN 202877950U CN 201220565414 CN201220565414 CN 201220565414 CN 201220565414 U CN201220565414 U CN 201220565414U CN 202877950 U CN202877950 U CN 202877950U
Authority
CN
China
Prior art keywords
tubular workpiece
holding device
support arm
conical sleeve
workpiece self
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
CN 201220565414
Other languages
Chinese (zh)
Inventor
程冬冬
冯娜
刘臣才
束永平
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.)
Donghua University
Original Assignee
Donghua University
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 Donghua University filed Critical Donghua University
Priority to CN 201220565414 priority Critical patent/CN202877950U/en
Application granted granted Critical
Publication of CN202877950U publication Critical patent/CN202877950U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a tubular workpiece self-centering holding device. The tubular workpiece self-centering holding device is characterized in that the tubular workpiece self-centering holding device comprises a lead screw drive mechanism. A cone-shaped sleeve is fixedly connected with the lead screw drive mechanism. At least three supporting arm structures which can freely move in a radial direction are evenly scattered at the periphery of the cone-shaped sleeve. One end of the supporting arm is contacted with the cone-shaped sleeve which drives the supporting arm structure to stretch out in the radial direction so that the other end of the supporting arm abuts against the inner wall of the workpiece and a centring clamping is formed. The holding device used for tubular workpieces with different radiuses is designed usingthe lead screw mechanism and a three-point centring principle. Workpiece axis centring of different diameters is guaranteed, high coaxiality of the processed workpiece is guaranteed and the positional accuracy is also extremely high. The tubular workpiece self-centering holding device has the advantages of being simple in structure and convenient to adjust.

Description

A kind of tubular workpiece self-centering clamping device
Technical field
The utility model relates to a kind of tubular workpiece self-centering clamping device, belongs to the Machining Technology field.
Background technology
The modes that adopt sides to fix a side side pressure are come clamping work pieces more during present lathe processing tubular workpiece, and what often cause locating is inaccurate, and rigidity is lower, center line also can occur and depart from, so that the tubular workpiece axiality that processes is lower.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of tubular workpiece self-centering clamping device, clamping that can be convenient and reliable, and applicable diameter of work changes greatly, and centering precision is high.
In order to solve the problems of the technologies described above, the technical solution of the utility model has provided a kind of tubular workpiece self-centering clamping device, it is characterized in that: comprise lead-screw drive mechanism, conical sleeve and lead-screw drive mechanism are affixed, uniform at least three support arm structures that can move freely diametrically around conical sleeve, one end of support arm structure contacts with conical sleeve, stretches out diametrically the other end that makes the support arm structure and props up the workpiece inwall and forms the clamping of feeling relieved thereby promote the support arm structure by conical sleeve.
Preferably, described lead-screw drive mechanism comprises leading screw, and leading screw is located in the first fixing bearing of position, and an end and the described conical sleeve of leading screw are affixed, are provided with handle at its other end.
Preferably, described support arm structure comprises the second bearing that the position is fixing, and being provided with in the second bearing can be along its connecting rod that is free to slide, and bead and cylindrical roller are hinged on respectively the two ends of connecting rod, and bead contacts with described conical sleeve.
Preferably, all described support arm structures are positioned at same plane.
The utility model has utilized screw mechanism and three points centering principle design a kind of clamping device that is used in the different radii tubular workpiece, the leading screw center line overlaps with the main shaft rotation center line, guaranteed the axis of workpiece centering of various diameters, guarantee that the workpiece axiality that processes is high, positioning accuracy is high, and is simple in structure, easy to adjust.
Description of drawings
The structural representation of a kind of tubular workpiece self-centering clamping device that Fig. 1 provides for the utility model.
The specific embodiment
For the utility model is become apparent, hereby with preferred embodiment, and cooperate accompanying drawing to be described in detail below.
As shown in Figure 1, a kind of tubular workpiece self-centering clamping device that the utility model provides, comprise lead-screw drive mechanism, conical sleeve 7 is affixed with lead-screw drive mechanism, uniform three support arm structures that can move freely diametrically around conical sleeve 7, all support arm structures are positioned at same plane.
Lead-screw drive mechanism comprises leading screw 1, and leading screw 1 is located in the first fixing bearing 3-1 of position, and the first bearing 3-1 can be fixed on the lathe for processing work 8, and an end and the conical sleeve 7 of leading screw 1 are affixed, are provided with handle 2 at its other end.
The support arm structure comprises the second bearing 3-2 that the position is fixing, the first bearing 3-1 can be fixed on the lathe for processing work 8, being provided with in the second bearing 3-2 can be along its connecting rod that is free to slide 5, bead 4 and cylindrical roller 6 are hinged on respectively the two ends of connecting rod 5, and bead 4 contacts with described conical sleeve 7.
When the utility model uses, handle 2 turns clockwise, drive leading screw 1 rotation, the circular cone sleeve 7 that is cemented in simultaneously leading screw 1 one ends moves towards circular cone small end helix along the leading screw center line, along with circular cone radially radius increase gradually, promote three support arm structures and move to tubular workpiece 8 along the second bearing 3-2, three support arm structures move radially distance and keep synchronously, can precisely guarantee the purpose of feeling relieved, until cylindrical roller 6 clamping tubular workpiece 8.Because the size that circular cone sleeve 7 radial dimensions increase is directly proportional with leading screw 1 axially movable size, so can guarantee that radial dimension evenly increases.Otherwise, be rotated counterclockwise handle 2, can unclamp the clamping to tubular workpiece 8.

Claims (4)

1. tubular workpiece self-centering clamping device, it is characterized in that: comprise lead-screw drive mechanism, conical sleeve (7) is affixed with lead-screw drive mechanism, uniform at least three support arm structures that can move freely diametrically around conical sleeve (7), one end of support arm structure contacts with conical sleeve (7), by conical sleeve (7) thus promoting the support arm structure stretches out diametrically the other end that makes the support arm structure and props up workpiece (8) inwall and forms the clamping of feeling relieved.
2. a kind of tubular workpiece self-centering clamping device as claimed in claim 1, it is characterized in that: described lead-screw drive mechanism comprises leading screw (1), leading screw (1) is located in fixing the first bearing (3-1) in position, one end of leading screw (1) and described conical sleeve (7) are affixed, are provided with handle (2) at its other end.
3. a kind of tubular workpiece self-centering clamping device as claimed in claim 1, it is characterized in that: described support arm structure comprises the second bearing (3-2) that the position is fixing, being provided with in the second bearing (3-2) can be along its connecting rod that is free to slide (5), bead (4) and cylindrical roller (6) are hinged on respectively the two ends of connecting rod (5), and bead (4) contacts with described conical sleeve (7).
4. a kind of tubular workpiece self-centering clamping device as claimed in claim 1, it is characterized in that: all described support arm structures are positioned at same plane.
CN 201220565414 2012-10-30 2012-10-30 Tubular workpiece self-centering holding device Expired - Fee Related CN202877950U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220565414 CN202877950U (en) 2012-10-30 2012-10-30 Tubular workpiece self-centering holding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220565414 CN202877950U (en) 2012-10-30 2012-10-30 Tubular workpiece self-centering holding device

Publications (1)

Publication Number Publication Date
CN202877950U true CN202877950U (en) 2013-04-17

Family

ID=48069415

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220565414 Expired - Fee Related CN202877950U (en) 2012-10-30 2012-10-30 Tubular workpiece self-centering holding device

Country Status (1)

Country Link
CN (1) CN202877950U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104374306A (en) * 2014-11-28 2015-02-25 安徽大盘压力容器有限公司 Flexible coaxiality centering device and seal with same
CN104384950A (en) * 2014-09-16 2015-03-04 芜湖市华益阀门制造有限公司 Adjustable positioning shaft
CN108823624A (en) * 2018-06-29 2018-11-16 苏州市金翔钛设备有限公司 Tubular workpiece plating rack
CN110625412A (en) * 2019-09-06 2019-12-31 北京星航机电装备有限公司 Universal supporting tool for inner profile based on lathe
CN111331166A (en) * 2020-02-26 2020-06-26 上海交通大学 Centering device for pipe fittings

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104384950A (en) * 2014-09-16 2015-03-04 芜湖市华益阀门制造有限公司 Adjustable positioning shaft
CN104374306A (en) * 2014-11-28 2015-02-25 安徽大盘压力容器有限公司 Flexible coaxiality centering device and seal with same
CN104374306B (en) * 2014-11-28 2017-02-01 安徽大盘特种装备车辆有限公司 Flexible coaxiality centering device and seal with same
CN108823624A (en) * 2018-06-29 2018-11-16 苏州市金翔钛设备有限公司 Tubular workpiece plating rack
CN108823624B (en) * 2018-06-29 2020-03-31 苏州市金翔钛设备有限公司 Electroplating frame for tubular workpiece
CN110625412A (en) * 2019-09-06 2019-12-31 北京星航机电装备有限公司 Universal supporting tool for inner profile based on lathe
CN111331166A (en) * 2020-02-26 2020-06-26 上海交通大学 Centering device for pipe fittings

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

Granted publication date: 20130417

Termination date: 20151030

EXPY Termination of patent right or utility model