CN206779993U - A kind of inner hole of workpiece fixer for machining - Google Patents

A kind of inner hole of workpiece fixer for machining Download PDF

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Publication number
CN206779993U
CN206779993U CN201720300362.1U CN201720300362U CN206779993U CN 206779993 U CN206779993 U CN 206779993U CN 201720300362 U CN201720300362 U CN 201720300362U CN 206779993 U CN206779993 U CN 206779993U
Authority
CN
China
Prior art keywords
fixture
workpiece
base
inner hole
fixer
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
CN201720300362.1U
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Chinese (zh)
Inventor
徐丽娟
汪若东
周涛
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.)
CHANGCHUN MEIKE AUTOMOBILE SPARE PARTS Co Ltd
Original Assignee
CHANGCHUN MEIKE AUTOMOBILE SPARE PARTS 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 CHANGCHUN MEIKE AUTOMOBILE SPARE PARTS Co Ltd filed Critical CHANGCHUN MEIKE AUTOMOBILE SPARE PARTS Co Ltd
Priority to CN201720300362.1U priority Critical patent/CN206779993U/en
Application granted granted Critical
Publication of CN206779993U publication Critical patent/CN206779993U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a kind of inner hole of workpiece fixer for machining, the fixing device includes base, locating piece, fixture, the locating piece is connected with the base, the fixture is arranged on the base and is connected with the base, the locating piece is determining the position of the fixture, the fixture needs the workpiece of hole machined in progress to clamp, pyramidal projections structure is set on the fixture, the workpiece surface is penetrated using raised structures, to reduce clamping force while ensureing and clamp, the precision of work pieces process is improved.

Description

A kind of inner hole of workpiece fixer for machining
Technical field
It the utility model is related to technical field of tooling clamps, specially a kind of fixing device based on interior hole machined and its should With.
Background technology
At present, many thin-walled revolution workpiece Al alloy parts on centre numerically controlled lathe when processing, generally use hydraulic pressure three-jaw Or increase wlding material on three-jaw and clamped with increasing with the holding claw of work piece interface to process, pressed from both sides using traditional scroll chuck Tightly, after clamping force discharges, workpiece deformation is serious, and endoporus roundness tolerance exceeds the requirement of hole size tolerance, meanwhile, endoporus circle Degree is irregular, and when postorder is processed, tensioner positioning is unstable, directly affects machining accuracy, being that workpiece is too thin after all is clamping Processing is deformed.
In order to reduce deformation, reduce clamping force in processing sometimes, although so deformation slightly improves, due to Tubing is cylindrical irregular, and clamping and positioning is unstable, it is possible that not clamping situation, reduces clamping force, not only not by simple Processing part deformation be can guarantee that in the margin of tolerance, and also deposit potential safety hazard.
Utility model content
The technical problems to be solved in the utility model is the fixed dress for the interior hole machined of above-mentioned existing thin-wall workpiece It is excessive and cause workpiece to be crushed out of shape to put clamping force, so that the problem of hole size exceeds permissible accuracy, proposes a kind of Inner hole of workpiece fixer for machining, the fixing device include base, locating piece, fixture, and the locating piece connects with the base Connect, the fixture is arranged on the base and is connected with the base, the locating piece to determine the position of the fixture, The fixture needs the workpiece of hole machined in progress to clamp, and sets pyramidal projections structure on the fixture, utilizes projection knot Structure penetrates the workpiece surface, to reduce clamping force while ensureing and clamp, improves the precision of work pieces process, and by described Fixture is flexibly connected design with the base, and ensure that can also clamp when workpieces processing outer surface is irregular, improve institute State the versatility of fixing device.
In order to solve the above-mentioned technical problem, technical scheme provided by the utility model is:
A kind of inner hole of workpiece fixer for machining, the fixing device include base, locating piece, fixture, the locating piece It is connected with the base, the fixture is arranged on the base and is connected with the base, and the locating piece is to determine The position of fixture is stated, the fixture needs the workpiece of hole machined in progress to clamp.
The fixing device includes three parts structure altogether, and the three parts structure size and shape are identical, and described three Part-structure is set around a center of circle, realizes the fixation of the workpiece jointly, arc structure is arranged on the inside of the fixture, and A circle configurations are collectively constituted on the inside of the fixture of the three parts structure.
The fixture is flexibly connected with the base, the relatively described base left rotation and right rotation of the fixture or is moved up and down, institute State and pin hole be respectively provided with fixture and the base, straight pin is placed in the pin hole, to connect the fixture with it is described Base simultaneously realizes the relative motion between the fixture and the base.
Circular groove is set among on the inside of the fixture, and the fixture inner side sets multiple projection knots in the groove both sides Structure, to clamp the workpiece, the raised structures according to multiple rows of multiple row shape proper alignment.
The raised structures are pyramidal structure, and the pyramidal structure sharp end is towards the center of circle, the adjacent conical knot The two sides angle scope that structure closes on is 30 degree~90 degree.
The beneficial effects of the utility model are:
1. inner hole of workpiece fixer for machining of the present utility model is used, using the pyramidal projections structure set on fixture, Penetrate workpiece surface certain depth so that workpiece not only acts in clamping process by frictional force, so as to considerably increase The stability of clamping, solve under relatively low clamping force effect, clamp the problem of unstable, ensure that workpiece in high-speed rotation The safety problem of process;
2. using inner hole of workpiece fixer for machining of the present utility model, design is flexibly connected using fixture and base, Surface defect can be deposited for workpiece, can also clamp workpiece, reduce the requirement to workpiece, improve the logical of fixing device The property used;
3. using inner hole of workpiece fixer for machining of the present utility model, pyramidal projections structure is utilized so that reduce and clamp Power, the deformation of thin-wall workpiece is effectively reduced, workpiece type variable is small after clamping force is removed, and its hole size meets dimensional tolerance Requirement;
4. using inner hole of workpiece fixer for machining of the present utility model, locating piece mounting means facilitates replaceable, can fit For the workpiece of various models and size, the versatility of Work fixing device is substantially increased.
Brief description of the drawings
Fig. 1 is the structural representation top view of the utility model inner hole of workpiece fixer for machining;
Fig. 2 is the dimensional structure diagram of the utility model inner hole of workpiece fixer for machining single part;
Fig. 3 is the structural representation of the utility model inner hole of workpiece fixer for machining fixture.
Embodiment
The utility model discloses a kind of inner hole of workpiece fixer for machining, those skilled in the art can be used for reference in this paper Hold, be suitably modified technological parameter realization.It is important to note that all similar replacements and change are to those skilled in the art For be it will be apparent that they are considered as being included in the utility model, and related personnel can substantially not depart from this reality Content described herein is modified or suitably changed with combining with the basis of new content, spirit and scope, realizing and Using the utility model technology.
In the utility model, unless otherwise stated, Science and Technology noun used herein has this area The implication that technical staff is generally understood that.
In order that those skilled in the art more fully understands the technical solution of the utility model, with reference to specific implementation The utility model is described in further detail for example.
Current inner hole of workpiece is made or is fixed the workpiece using fixing device when processing, to facilitate its processing, often Fixing device is clamp structure, i.e., using clamp workpiece, then workpiece is processed further, however, due to Often the outer wall of workpiece is than relatively thin, in order to clamp the workpiece, preferably workpiece is processed and operates and prevents security incident, is pressed from both sides Tool can provide certain clamping force, and the clamping force can cause workpiece that certain deformation occurs, when machining and cancel the folder After clamp force, the workpiece has certain return change, and the return changes the change that can cause inner hole of workpiece size, and clamping force is got over Greatly, its deformation is bigger, then the return change after the completion of work pieces process is also bigger, and the dimensional discrepancy for ultimately resulting in inner hole of workpiece is got over Greatly, thus, in order to ensure the size meet demand of inner hole of workpiece, then need to control the clamping force of fixing device, it is contemplated that peace Full sex chromosome mosaicism, it is impossible to simple reduction clamping force realizes reduction deformation, the utility model proposes technical scheme can reduce Clamping force, while can be good at fixing workpiece, reduce the error of inner hole of workpiece size while security is ensured.
The embodiment of the utility model inner hole of workpiece fixer for machining is illustrated below in conjunction with the accompanying drawings:
Fig. 1 is the structural representation top view of the utility model inner hole of workpiece fixer for machining, and the fixing device is total to Including three parts structure, and the three parts structure size and shape are identical, and the three parts structure is separate and described Three parts structure is set around a center of circle, realizes the fixation of the workpiece jointly, and the inner side of fixture 4 is arranged to circular arc knot Structure, an and circle configurations are collectively constituted on the inside of three parts structure, the three parts structure respectively with the mechanism such as machine tool chief axis Connection, the three parts structure movement is driven to realize that the feeding of the workpiece, clamping, blanking etc. are grasped by the machine tool chief axis Make.
The single part of the fixing device includes base 1, locating piece 2, fixture 4, the locating piece 2 and the base 1 Connection, the fixture 4 is arranged on the base 1 and is connected with the base 1, and the locating piece 2 is determining the fixture 4 Position, the fixture 4 to clamp need to carry out in hole machined workpiece, set on the base 1 and the locating piece 2 pair Answer screw hole and the base 1 and the locating piece 2 are fixedly connected with by the first screw 3, set on the base away from center of circle one end Put screw hole and the base 1 and the machine tool chief axis are fixedly connected with by the second screw 6, the base 1 on the fixture 4 with setting Pin hole corresponding to putting simultaneously is connected by straight pin 5.
Fig. 2 be the utility model inner hole of workpiece fixer for machining single part dimensional structure diagram, the base 1 It is connected with machine tool chief axis and to support whole fixing device, the fixture 4 is flexibly connected with 1, the bottom, the phase of fixture 4 The base 1 can be realized left rotation and right rotation or it is micro move up and down, be respectively provided with pin on the fixture 4 and the base 1 Hole, straight pin 5 is placed in the pin hole, to connect the fixture 4 and the base 1 and realize the fixture 4 with it is described Relative motion between base 1, the locating piece 2 are connected with the base by first screw 3, and the locating piece 2 is used With the position of the fixation fixture 4, the fixture 4 around the left rotation and right rotation of straight pin 5 to when touching the locating piece 2 by institute The continuation rotary motion that locating piece 2 limits the fixture 4 is stated, the work is realized by the base 1, locating piece 2, fixture 4 jointly The fixation of part, and because the fixture 4 can be along straight pin trace movement and can be left around the straight pin 5 about 5 Turn right dynamic, and final position is determined by the locating piece 2, can ensure in the workpiece in outer round surface out-of-flatness or irregular Shi Suoshu fixtures 4 can by its own move up and down or left-right rotary transfers and realizes the abundant of the fixture 4 and the workpiece Contact, improve chuck strength.
Further, the inner side middle part of fixture 4 sets circular groove, and the inner side of fixture 4 is in the groove both sides Multiple raised structures are set, to clamp the workpiece, the raised structures according to multiple rows of multiple row shape proper alignment, it is described Raised structures are pyramidal structure, and the pyramidal structure sharp end is towards the center of circle, when the workpiece is placed in the inner side of fixture 4 When, provide inside clamping force by the fixture 4 and promote the pyramidal structure to penetrate the outer surface of workpiece, further strengthen institute The fixation of workpiece, and penetrating due to the pyramidal structure are stated, the clamping force can be reduced, it is thus possible to reduce described Deformation quantity in workpiece process, error range as defined in the endoporus processing dimension satisfaction of the workpiece is realized, as shown in Figure 3 The two sides institute closed on for the structural representation of the utility model inner hole of workpiece fixer for machining fixture, the adjacent conical structure It is 30 degree~90 degree into angle theta scope, it is optimal in the present embodiment to choose the angle theta scope as 60 degree.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and Retouching also should be regarded as the scope of protection of the utility model.

Claims (10)

1. a kind of inner hole of workpiece fixer for machining, it is characterised in that the fixing device includes base, locating piece, fixture, institute State locating piece to be connected with the base, the fixture is arranged on the base and is connected with the base, and the locating piece is used To determine the position of the fixture, the fixture needs the workpiece of hole machined in progress to clamp.
2. inner hole of workpiece fixer for machining according to claim 1, it is characterised in that the fixing device includes three altogether Part-structure, the three parts structure size and shape are identical, and the three parts structure is set around a center of circle, jointly Realize the fixation of the workpiece.
3. inner hole of workpiece fixer for machining according to claim 2, it is characterised in that the fixture is lived with the base Dynamic connection, the relatively described base left rotation and right rotation of the fixture or is moved up and down.
4. inner hole of workpiece fixer for machining according to claim 3, it is characterised in that on the fixture and the base Pin hole is respectively provided with, straight pin is placed in the pin hole, to connect the fixture and the base and realize the fixture With the relative motion between the base.
5. inner hole of workpiece fixer for machining according to claim 2, it is characterised in that be designed as justifying on the inside of the fixture Arc structure, and collectively constitute a circle configurations on the inside of the fixture of the three parts structure.
6. inner hole of workpiece fixer for machining according to claim 2, it is characterised in that set among on the inside of the fixture Circular groove.
7. inner hole of workpiece fixer for machining according to claim 6, it is characterised in that in described recessed on the inside of the fixture Groove both sides set multiple raised structures, to clamp the workpiece.
8. inner hole of workpiece fixer for machining according to claim 7, it is characterised in that the raised structures are according to multiple rows of The shape proper alignment of multiple row.
9. inner hole of workpiece fixer for machining according to claim 8, it is characterised in that the raised structures are taper knot Structure, the pyramidal structure sharp end is towards the center of circle.
10. inner hole of workpiece fixer for machining according to claim 9, it is characterised in that the adjacent conical structure is faced Near two sides angle scope is 30 degree~90 degree.
CN201720300362.1U 2017-03-27 2017-03-27 A kind of inner hole of workpiece fixer for machining Expired - Fee Related CN206779993U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720300362.1U CN206779993U (en) 2017-03-27 2017-03-27 A kind of inner hole of workpiece fixer for machining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720300362.1U CN206779993U (en) 2017-03-27 2017-03-27 A kind of inner hole of workpiece fixer for machining

Publications (1)

Publication Number Publication Date
CN206779993U true CN206779993U (en) 2017-12-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106914786A (en) * 2017-03-27 2017-07-04 长春市美科汽车零部件有限公司 A kind of inner hole of workpiece fixer for machining

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106914786A (en) * 2017-03-27 2017-07-04 长春市美科汽车零部件有限公司 A kind of inner hole of workpiece fixer for machining

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20171222

Termination date: 20210327

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