CN201324945Y - Self-centering center frame - Google Patents

Self-centering center frame Download PDF

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Publication number
CN201324945Y
CN201324945Y CNU2008202228332U CN200820222833U CN201324945Y CN 201324945 Y CN201324945 Y CN 201324945Y CN U2008202228332 U CNU2008202228332 U CN U2008202228332U CN 200820222833 U CN200820222833 U CN 200820222833U CN 201324945 Y CN201324945 Y CN 201324945Y
Authority
CN
China
Prior art keywords
arm
support arm
mounting box
support
self
Prior art date
Application number
CNU2008202228332U
Other languages
Chinese (zh)
Inventor
徐中行
胥云
赖修颖
Original Assignee
四川长征机床集团有限公司
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 四川长征机床集团有限公司 filed Critical 四川长征机床集团有限公司
Priority to CNU2008202228332U priority Critical patent/CN201324945Y/en
Application granted granted Critical
Publication of CN201324945Y publication Critical patent/CN201324945Y/en

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Abstract

The utility model discloses a self-centering center frame which comprises a bracket, a mounting box which is fixedly connected with the bracket and is provided with a sliding groove, a two-way oil cylinder fixedly connected with the mounting box, a cross arm arranged in the sliding groove, an upper supporting arm and a lower support arm respectively arranged in the mounting box by hinge shafts, and two support arm driving mechanisms which are respectively connected with the cross arm, the upper support arm and the lower support arm; wherein the piston rod of the two-way oil cylinder is fixedly connected with the rear end of the cross arm; each support arm driving mechanism comprises a fixing plate fixedly connected with the cross arm, and a connecting plate mounted on the mounting box by a hinge shaft; each connecting plate is provided with two curvilinear sliding grooves; each fixing plate and the corresponding support arm thereof are provided with a pin shaft which is fixed thereon; each pin shaft is arranged in the corresponding curvilinear sliding groove; and the pin shafts and the frond end of each support arm are positioned at the two sides of the hinge shaft thereof. The self-centering center frame has the advantages of small structure size and high positioning precision, needs no regular adjustment and improves the machining efficiency.

Description

The self-centering centre frame
Technical field
The utility model relates to a kind of centre frame that relates to large-scale lathe.
Background technology
When large-scale lathe processing long and thin component, need use centre frame to do aiding support, for many years the structure of common central frame comprises: support, be installed on the support three independently support control assembly, three supporting control assemblies are 120 ° of distributions each other, form loop configuration, the manual or hydraulic unit that each supporting control assembly comprises a cramp bar and drives cramp bar; This structural disadvantages is:
1) owing to three independently cramp bar adjustment respectively, its positioning accuracy is low, is difficult to satisfy the requirement of high accuracy processing.
2) workpiece of different-diameter all will adjust, and has influenced working (machining) efficiency;
3) physical dimension is big, still can use in traditional unshielded lathe, is not easy to lay in the machining center of precision, and causes easily and interfere even collision.
The utility model content
The purpose of this utility model is at the deficiency on the prior art, and a kind of self-centering centre frame is provided, and it has the advantage that physical dimension is little, positioning accuracy is high, and need not frequent adjustment, has improved working (machining) efficiency.
For achieving the above object, self-centering centre frame of the present utility model, comprise support, it is characterized in that also comprising the mounting box that connects firmly and have chute with support, the two-way cylinder that connects firmly with mounting box, be loaded on the transverse arm in the chute, respectively by a hinge be loaded on the mounting box on, lower branch arm, connect transverse arm and last respectively, two support arm driving mechanisms of lower branch arm, wherein the rear end of the piston rod of two-way cylinder and transverse arm connects firmly, described each support arm driving mechanism comprises the fixed head that connects firmly with transverse arm, be loaded on connecting plate on the mounting box by a hinge, be equipped with two shaped form chutes on the every connecting plate, every fixed head and corresponding support arm all set firmly a bearing pin, each bearing pin is loaded in the corresponding shaped form chute, and the bearing pin of each support arm and front end are positioned at the both sides of its hinge;
The utility model moves reciprocatingly by the piston rod drive transverse arm of two-way cylinder, transverse arm drives upper and lower support arm by two support arm driving mechanisms again and rotates around its hinge, make the center of circle that contact point determined of transverse arm, upper and lower support arm and workpiece and the axis coinciding of workpiece, reach the purpose of supporting; Because piston rod drives simultaneously at 3 and moves, and has the self-centering function, the positioning accuracy height; And transverse arm and upper and lower support arm do not form ring-shaped bearing, and physical dimension is little, are easy to install, and are difficult for causing interfering even collision;
As further improvement of the utility model, described each support arm driving mechanism also comprises the push pedal that connects firmly with transverse arm, the back end in contact of push pedal and corresponding support arm; When support arm is before pushed away, can increase thrust to support arm, increase the bearing strength of support arm;
As further improvement of the utility model, the front end of described upper and lower support arm is equipped with an eccentric roller, is provided with roller at the front end of transverse arm, and the edge of the adjacent end of eccentric roller and roller and workpiece is than the axle center of its place support arm or the more close workpiece of transverse arm; By forming rolling friction, reduce the wearing and tearing of workpiece and roller; Can finely tune clamping position by eccentric roller; Inside at upper and lower support arm and transverse arm also can be provided with lubricating pipe, provides lubricated to eccentric roller and roller;
In sum, the utlity model has the advantage that physical dimension is little, positioning accuracy is high, and need not frequent adjustment, improved working (machining) efficiency.
Description of drawings
Fig. 1 is a front view of the present utility model.
Fig. 2 is the A-A profile of Fig. 1.
The specific embodiment
By illustrated in figures 1 and 2, this self-centering centre frame, comprise support 1, connect firmly and have the mounting box 2 of chute with support 1, the two-way cylinder 3 that connects firmly with mounting box 2, be loaded on the transverse arm 4 in the chute, respectively by a hinge 5 be loaded on the mounting box 2 on, lower branch arm 6 and 7, connect transverse arm 4 and last respectively, lower branch arm 6, two support arm driving mechanisms of 7, wherein the piston rod 8 of two-way cylinder 3 connects firmly by connecting rod 9 with the rear end of transverse arm 4, front end at transverse arm 4 is provided with roller 10, on, lower branch arm 6,7 front end is equipped with an eccentric roller 11, described each support arm driving mechanism comprises fixed head 12 and the push pedal 13 that connects firmly with transverse arm 4, be loaded on connecting plate 15 on the mounting box 2 by hinge 14, be equipped with two shaped form chutes 16 on the every connecting plate 15,17, every fixed head 12 and corresponding support arm 6 or 7 all set firmly a bearing pin 18,19, two bearing pins 18,19 are loaded on corresponding shaped form chute 16, in 17, each support arm 6, the both sides that 7 bearing pin 19 and its eccentric roller 11 are positioned at its hinge 5, the back end in contact of every push pedal 13 and corresponding support arm 6 or 7, the edge of eccentric roller 11 and roller 10 adjacent ends with workpiece is than its place support arm 6 or 7, and the axle center of transverse arm 4 more close workpiece 20;
The utility model moves reciprocatingly by the piston rod 8 drive transverse arms 4 of two-way cylinder 3, when protracting, two fixed heads 12 and push pedal 13 move forward, push pedal 13 promotes corresponding support arm 6 or 7 forward, fixed head 12 drives connecting plate 15 around its hinge 14 rotations by bearing pin 18 and shaped form chute simultaneously, driving upper branch arm 6 by shaped form chute 17 and bearing pin 19 again rotates around its hinge 5, the motion process of lower branch arm 7 is identical with upper branch arm 6, make roller 10, eccentric roller 11 and the center of circle that contact point determined of workpiece 20 and the axis coinciding of workpiece 20 reach the purpose of supporting; When piston rod 8 retreated, mechanism resetted, and desirablely went out workpiece 20; Can finely tune clamping position by eccentric roller 11; Inside at upper and lower support arm 6,7 and transverse arm 4 also can be provided with lubricating pipe 21, can provide lubricated to eccentric roller 11 and roller 10;
Because piston rod 8 drives simultaneously at 3 and moves, and has the self-centering function, the positioning accuracy height; And transverse arm 4 and upper and lower support arm 6,7 do not form ring-shaped bearing, and physical dimension is little, are easy to install, and are difficult for causing interfering even collision.

Claims (3)

1. self-centering centre frame, comprise support, it is characterized in that also comprising the mounting box that connects firmly and have chute with support, the two-way cylinder that connects firmly with mounting box, be loaded on the transverse arm in the chute, respectively by a hinge be loaded on the mounting box on, lower branch arm, connect transverse arm and last respectively, two support arm driving mechanisms of lower branch arm, wherein the rear end of the piston rod of two-way cylinder and transverse arm connects firmly, described each support arm driving mechanism comprises the fixed head that connects firmly with transverse arm, be loaded on connecting plate on the mounting box by a hinge, be equipped with two shaped form chutes on the every connecting plate, every fixed head and corresponding support arm all set firmly a bearing pin, each bearing pin is loaded in the corresponding shaped form chute, and the bearing pin of each support arm and front end are positioned at the both sides of its hinge.
2. self-centering centre frame as claimed in claim 1 is characterized in that described each support arm driving mechanism also comprises the push pedal that connects firmly with transverse arm, the back end in contact of push pedal and corresponding support arm.
3. self-centering centre frame as claimed in claim 1 or 2, the front end that it is characterized in that described upper and lower support arm is equipped with an eccentric roller, front end at transverse arm is provided with roller, and the edge of the adjacent end of eccentric roller and roller and workpiece is than the axle center of its place support arm or the more close workpiece of transverse arm.
CNU2008202228332U 2008-11-21 2008-11-21 Self-centering center frame CN201324945Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008202228332U CN201324945Y (en) 2008-11-21 2008-11-21 Self-centering center frame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008202228332U CN201324945Y (en) 2008-11-21 2008-11-21 Self-centering center frame

Publications (1)

Publication Number Publication Date
CN201324945Y true CN201324945Y (en) 2009-10-14

Family

ID=41176924

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008202228332U CN201324945Y (en) 2008-11-21 2008-11-21 Self-centering center frame

Country Status (1)

Country Link
CN (1) CN201324945Y (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101829893A (en) * 2010-04-22 2010-09-15 上海江南长兴重工有限责任公司 Horizontal mounting trolley of large-scale shaft workpiece
CN101898330A (en) * 2010-07-16 2010-12-01 湖南宇环同心数控机床有限公司 Improved centre frame for precision grinding machine
CN102152136A (en) * 2010-02-08 2011-08-17 Smw-奥托布洛克紧固系统有限责任公司 Self-centring support
CN102380773A (en) * 2011-11-08 2012-03-21 大连机床(数控)股份有限公司 Air-blowing water spraying type double hydraulic central frame mechanism
CN102513464A (en) * 2012-01-09 2012-06-27 无锡南天安全设施有限公司 Open three-point centering mechanism
CN102837205A (en) * 2012-09-26 2012-12-26 保定标正机床有限责任公司 Hydraulic self-centering inner cavity tensioning mechanism
CN103433758A (en) * 2013-08-29 2013-12-11 湖北九洲数控机床有限责任公司 Sliding block type self-centering center frame of which supporting arms can be hidden
CN104551992A (en) * 2015-01-09 2015-04-29 滁州微秒精密机械有限公司 Grinding hydraulic pressure type automatic centering central frame
TWI492801B (en) * 2013-03-01 2015-07-21
CN106141702A (en) * 2015-05-12 2016-11-23 Smw-奥托布洛克紧固系统有限责任公司 Fixed support
CN106584136A (en) * 2016-12-28 2017-04-26 宁波市精恒凯翔机械有限公司 Self-centering center frame
CN107127590A (en) * 2017-06-09 2017-09-05 北京工业大学 A kind of dexterous three-jaw automatic centring fixture of translation swallow appearance cam mandrel type

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102152136A (en) * 2010-02-08 2011-08-17 Smw-奥托布洛克紧固系统有限责任公司 Self-centring support
CN102152136B (en) * 2010-02-08 2015-09-23 Smw-奥托布洛克紧固系统有限责任公司 Self-centring support
CN101829893A (en) * 2010-04-22 2010-09-15 上海江南长兴重工有限责任公司 Horizontal mounting trolley of large-scale shaft workpiece
CN101898330A (en) * 2010-07-16 2010-12-01 湖南宇环同心数控机床有限公司 Improved centre frame for precision grinding machine
CN102380773A (en) * 2011-11-08 2012-03-21 大连机床(数控)股份有限公司 Air-blowing water spraying type double hydraulic central frame mechanism
CN102513464B (en) * 2012-01-09 2013-11-06 无锡南天安全设施有限公司 Open three-point centering mechanism
CN102513464A (en) * 2012-01-09 2012-06-27 无锡南天安全设施有限公司 Open three-point centering mechanism
CN102837205A (en) * 2012-09-26 2012-12-26 保定标正机床有限责任公司 Hydraulic self-centering inner cavity tensioning mechanism
CN102837205B (en) * 2012-09-26 2016-03-16 保定标正机床有限责任公司 Hydraulic self-centering inner chamber tension mechanism
TWI492801B (en) * 2013-03-01 2015-07-21
CN103433758A (en) * 2013-08-29 2013-12-11 湖北九洲数控机床有限责任公司 Sliding block type self-centering center frame of which supporting arms can be hidden
CN104551992A (en) * 2015-01-09 2015-04-29 滁州微秒精密机械有限公司 Grinding hydraulic pressure type automatic centering central frame
CN106141702A (en) * 2015-05-12 2016-11-23 Smw-奥托布洛克紧固系统有限责任公司 Fixed support
CN106141702B (en) * 2015-05-12 2019-10-18 Smw-奥托布洛克紧固系统有限责任公司 Fixed bracket
CN106584136A (en) * 2016-12-28 2017-04-26 宁波市精恒凯翔机械有限公司 Self-centering center frame
CN107127590A (en) * 2017-06-09 2017-09-05 北京工业大学 A kind of dexterous three-jaw automatic centring fixture of translation swallow appearance cam mandrel type

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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: 20091014

Termination date: 20121121

C17 Cessation of patent right