CN204135947U - A kind of self-centering fixture - Google Patents
A kind of self-centering fixture Download PDFInfo
- Publication number
- CN204135947U CN204135947U CN201420619096.5U CN201420619096U CN204135947U CN 204135947 U CN204135947 U CN 204135947U CN 201420619096 U CN201420619096 U CN 201420619096U CN 204135947 U CN204135947 U CN 204135947U
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- fixture block
- elastic fixture
- wedge
- bearing
- self
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Abstract
A kind of self-centering fixture, it is characterized in that the shaped as frame bearing comprising upward opening, be arranged on the wedge that can move horizontally along bearing base on bearing base above, be fixed on the left elastic fixture block on the bearing left side, the lower elastic fixture block being fixed on the right elastic fixture block parallel with left elastic fixture block on wedge and being arranged on above bearing base, lower elastic fixture block can be lower mobile in the vertical direction, lower elastic fixture block is perpendicular to left elastic fixture block and right elastic fixture block, wedge described in movement drives right elastic fixture block to move left and right in the horizontal direction and lower elastic fixture block moves down in the vertical direction, make described left elastic fixture block, right elastic fixture block and lower elastic fixture block are tangential on same periphery all the time.Its structure is simple, and easy to operate, the safety and reliability of clamping is high, can meet vertically clamping of the cylinder body of different-diameter, improves the quality that oil cylinder is vertically assembled.
Description
Technical field
The utility model relates to a kind of self-centering fixture, particularly relates to a kind ofly to be applicable to the clamping of the cylindrical parts of different-diameter and fixing self-centering fixture.
Background technology
In oil cylinder, the assembling quality of piston rod assembly and cylinder body and the sealing property be fastenedly connected of cylinder body and end cap determine the final quality of oil cylinder.The oil cylinder that length is longer adopts level assembling, and the vertical assembling of oil cylinder employing that length is shorter, during vertical assembling, piston rod is pushed into cylinder body from the upward opening of cylinder body, end cap being fastenedly connected under shed and cylinder body from cylinder body, so just need cylinder body to be vertically fixed on a certain position and be namely conducive to pushing of piston rod downwards, have and be beneficial to the upwards fastening of end cap, mostly assembled by artificial lifting mode in existing vertical assembling, and lifting can not stationary housing, diameter of cylinder and weight larger time by after cylinder body vertical lifting again built-up piston bar and end cap time there is certain potential safety hazard, and be difficult to the sealing property that ensures that end cap and cylinder body are fastenedly connected, the quality of vertical assembling can not be guaranteed.Develop a kind of vertical cylinder body placed and fixture that the cylinder body that can meet different-diameter vertically clamps of being fixedly clamped quite to be necessary.
Utility model content
The utility model provides a kind of vertical cylinder body of placing and can meet vertically clamping of the cylinder body of different-diameter of being fixedly clamped, and structure is simple, easy to operate, the self-centering fixture that the safety and reliability of clamping is high, improves the quality that oil cylinder is vertically assembled.
For achieving the above object, the technical solution adopted in the utility model is: a kind of self-centering fixture, it is characterized in that the shaped as frame bearing comprising upward opening, be arranged on the wedge that can move horizontally along bearing base on bearing base above, be fixed on the left elastic fixture block on the bearing left side, be fixed on right elastic fixture block parallel with left elastic fixture block on wedge and be arranged on the lower elastic fixture block above bearing base, lower elastic fixture block can be lower mobile in the vertical direction, lower elastic fixture block is perpendicular to left elastic fixture block and right elastic fixture block, wedge described in movement drives right elastic fixture block to move left and right in the horizontal direction and lower elastic fixture block moves down in the vertical direction, make described left elastic fixture block, right elastic fixture block and lower elastic fixture block are tangential on same periphery all the time.
Further, described can moving horizontally along bearing base at wedge refers to, on the base of described bearing, guide rail is housed, and the bottom surface of described wedge can move on described guide rail.
Further, described lower elastic fixture block lower movement can refer to that described self-centering fixture also comprises guide support seat in the vertical direction, described guide support seat is by lip block, vertical guide stem and fairlead composition, described fairlead is fixedly connected with the base of bearing, described vertical guide stem is fixedly connected with described lip block through fairlead, described vertical guide stem does not contact with the base of described bearing, described lip block is arranged on directly over described guide rail, rolling bearing is equipped with in the lower right corner of described lip block, described lower elastic fixture block is fixed on the upper surface of described lip block, described rolling bearing contacts with the inclined-plane of described wedge, wedge described in promotion moves horizontally and just can promote lip block and move up and down along vertical guide stem on described guide rail.
Further, described fairlead is made up of left fairlead symmetrically arranged relative to bearing base and right fairlead, described vertical guide stem is made up of left vertical guide stem symmetrically arranged relative to bearing base and right vertical guide stem, described left vertical guide stem is fixedly connected with described lip block through described left fairlead, and described right vertical guide stem is fixedly connected with described lip block through described right fairlead.
Further, described self-centering fixture also comprises for making described wedge at the draw-gear of described slide, and the draw-gear described in startup makes described wedge move horizontally to the left or to the right.
Further, described draw-gear is thread, the initiating terminal of described thread is fixed on described wedge, and the end of thread stretches out described self-centering fixture, and the thread described in rotation can make described wedge move horizontally to the left or to the right.
Further, the end of described thread is equipped with the turning handle of rotatable thread.
The utility model by the cylindrical of left elastic fixture block, right elastic fixture block and lower elastic fixture block 3 cylinder bodies that are fixedly clamped, utilize elastic fixture block the elastoplasticity dynamics that can the increase clamping gradually frictional force that both increased elastic fixture block and outer wall of cylinder block ensure the safety and reliability of clamping.Mobile wedge can move right elastic fixture block and lower elastic fixture block simultaneously, wedge, right elastic fixture block and lower elastic fixture block three form the diameter that linkage structure regulates the periphery simultaneously tangent with left elastic fixture block, right elastic fixture block and lower elastic fixture block, are applicable to the clamping of different-diameter cylinder body.This clamp structure is simple to operation, and clamping safety and reliability is high, is specially adapted to the assembling of diameter compared with large tank.
Accompanying drawing explanation
Fig. 1 is the perspective view of the self-centering fixture in embodiment
Fig. 2 is the planar structure schematic diagram of the self-centering fixture in embodiment
Fig. 3 is the cross section view of the guide support seat in embodiment
Fig. 4 is the positional structure schematic diagram of guide support seat, wedge shape and bearing in embodiment
In figure: 1, bearing, 2, wedge, 3, left elastic fixture block, 4, right elastic fixture block, 5, lower elastic fixture block, 6, guide rail, 7, guide support seat, 71, lip block, 72, vertical guide stem, 73, fairlead, 721, left vertical guide stem, 722, right vertical guide stem, 731, left fairlead, 732, right fairlead, 8, rolling bearing, 9, thread, 10, turning handle.
Specific embodiment
Be described in detail below in conjunction with the technical scheme of accompanying drawing to embodiment of the present utility model.
As shown in Figures 1 to 4, a kind of self-centering fixture, comprise the shaped as frame bearing 1 of upward opening, guide rail 6 base of bearing 1 is equipped with, wedge 2 is arranged on above bearing 1 base, the bottom surface of wedge 2 can move horizontally on guide rail 6, left elastic fixture block 3 is fixed on bearing 1 left side, right elastic fixture block 4 is fixed on wedge 2, right elastic fixture block 4 is parallel with left elastic fixture block 3, guide support seat 7 is by support cushion block 71, vertical guide stem 72 and fairlead 73 form, fairlead 73 is fixedly connected with the base of bearing 1, vertical guide stem 72 is fixedly connected with lip block 71 through fairlead 73, vertical guide stem 72 does not contact with the base of bearing 1, lip block 71 is arranged on directly over guide rail 6, rolling bearing 8 is equipped with in the lower right corner of lip block 71, lower elastic fixture block 5 is fixed on the upper surface of lip block 71, lower elastic fixture block 5 is perpendicular to left elastic fixture block 3 and right elastic fixture block 4, rolling bearing 8 contacts with the inclined-plane of wedge 2, wedge 2 described in promotion moves horizontally and just can promote lip block 71 along vertical guide stem 72 vertically movement on guide rail 6, lower elastic fixture block 5 is along with lip block 71 together vertically movement, right elastic fixture block 4 moves together in the horizontal direction along with wedge 2, left elastic fixture block 3, right elastic fixture block 4 and lower elastic fixture block 5 are tangential on same periphery all the time.Fairlead 73 is made up of left fairlead 731 symmetrically arranged relative to bearing 1 base and right fairlead 732, vertical guide stem 72 is made up of left vertical guide stem 721 symmetrically arranged relative to bearing 1 base and right vertical guide stem 722, left vertical guide stem 721 is fixedly connected with described lip block 71 through described left fairlead 731, and described right vertical guide stem 722 is fixedly connected with described lip block 71 through described right fairlead 732.The initiating terminal of thread 9 is fixed on described wedge 2, the end of thread 9 stretches out described self-centering fixture and turning handle 10 is affixed, rotating turning handle 10 makes thread 9 clockwise or rotate counterclockwise, and just can promote wedge 2 in guide rail 6 horizontal slip to the left or to the right.
When manufacturing self-centering fixture of the present utility model, the oblique angle α of wedge 2 is set as 26.626 °, by left elastic fixture block 3, right elastic fixture block 4 and lower elastic fixture block 5 are set on same periphery, the horizontal displacement of wedge 2 movement on guide rail 6 equals two of the displacement that lower elastic fixture block 5 moves in the vertical direction, make left elastic fixture block 3, right elastic fixture block 4 and lower elastic fixture block 5 are tangential on same side face all the time, when using self-centering fixture of the present utility model to press from both sides cylinder body, first moving wedge 2 according to the size of diameter of cylinder makes cylinder body can be placed into left elastic fixture block 3, in the cavity that right elastic fixture block 4 and lower elastic fixture block 5 surround, after placing cylinder body, rotating clockwise turning handle 10 makes wedge 2 level be moved to the left, now right elastic fixture block 4 is moved to the left along with wedge 2, lip block 71 vertically moves up under the guiding of vertical guide stem 72, lower elastic fixture block 5 moves up along with lip block 71, cylinder body is by left elastic fixture block 3, right elastic fixture block 4 and lower elastic fixture block 5 clamp gradually, left elastic fixture block 3 in the process of clamping, right elastic fixture block 4 and lower elastic fixture block 5 be out of shape gradually under the effect of the pressure to increase gradually with the contact area of cylinder body in deformation process also increase gradually with the frictional force of outer surface of cylinder block afterwards make to clamp more firm.When cylinder body is carried out vertical fixed placement, first according to the length of cylinder body on the trunnion axis of swivel mount at regular intervals install two or three self-centering fixtures of the present utility model, by swivel mount horizontal positioned, two or three self-centering fixtures of the present utility model connect the outer surface of the clamping cylinder body of certain intervals, after clamping, swivel mount is turned to perpendicular to horizontal plane, so just consolidate direction fixed placement cylinder body vertical, when the vertical assembling carrying out oil cylinder, cylinder body is vertically fixedly made safety and reliability during assembling higher.Self-centering fixture structure of the present utility model is simple, and easy to operate to be applicable to clamping of the column post part of different-diameter fixing.
Below by reference to the accompanying drawings complete description is carried out to the technical scheme of embodiment of the present utility model, it should be noted that described embodiment is only a part of embodiment of the present utility model.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of the utility model protection.Such as, vertical guide stem in embodiment is moved downward vertically in leading of fairlead, also can use bearing vertical guide rail lead move downward vertically structure, on the base of bearing, guide rail is housed in embodiment, wedge is at slide on rails, also can be used in wedge base and load onto guide shaft, guide pillar is loaded onto on bearing base, makes the structure that guide shaft slides on guide pillar.
Claims (7)
1. a self-centering fixture, it is characterized in that the shaped as frame bearing (1) comprising upward opening, be arranged on the wedge (2) that can move horizontally along bearing (1) base on bearing (1) base above, be fixed on the left elastic fixture block (3) on bearing (1) left side, the lower elastic fixture block (5) being fixed on the upper right elastic fixture block (4) parallel with left elastic fixture block (3) of wedge (2) and being arranged on above bearing (1) base, lower elastic fixture block (5) can be lower mobile in the vertical direction, lower elastic fixture block (5) is perpendicular to left elastic fixture block (3) and right elastic fixture block (4), wedge (2) described in movement drives right elastic fixture block (4) to move left and right in the horizontal direction and lower elastic fixture block (5) moves down in the vertical direction, make described left elastic fixture block (3), right elastic fixture block (4) and lower elastic fixture block (5) are tangential on same periphery all the time.
2. self-centering fixture according to claim 1, it is characterized in that described can moving horizontally along bearing (1) base at wedge (2) refers to, on the base of described bearing (1), guide rail (6) be housed, the bottom surface of described wedge (2) can be upper mobile at described guide rail (6).
3. self-centering fixture according to claim 2, it is characterized in that described lower elastic fixture block (5) lower movement can refer to that described self-centering fixture also comprises guide support seat (7) in the vertical direction, described guide support seat (7) is by lip block (71), vertical guide stem (72) and fairlead (73) composition, described fairlead (73) is fixedly connected with the base of bearing (1), described vertical guide stem (72) is fixedly connected with described lip block (71) through fairlead (73), described vertical guide stem (72) does not contact with the base of described bearing (1), described lip block (71) is arranged on directly over described guide rail (6), rolling bearing (8) is equipped with in the lower right corner of described lip block (71), described lower elastic fixture block (5) is fixed on the upper surface of described lip block (71), described rolling bearing (8) contacts with the inclined-plane of described wedge (2), wedge (2) described in promotion moves horizontally and just can promote lip block (71) and move up and down along vertical guide stem (72) on described guide rail (6).
4. self-centering fixture according to claim 3, it is characterized in that described fairlead (73) forms by relative to the symmetrically arranged left fairlead (731) in bearing (1) base and right fairlead (732), described vertical guide stem (72) forms by relative to the symmetrically arranged left vertical guide stem (721) in bearing (1) base and right vertical guide stem (722), described left vertical guide stem (721) is fixedly connected with described lip block (71) through described left fairlead (731), described right vertical guide stem (722) is fixedly connected with described lip block (71) through described right fairlead (732).
5. the self-centering fixture according to claim 2 to any one of claim 4, its feature also comprises for making described wedge (2) at the draw-gear of described guide rail (6) movement at described self-centering fixture, and the draw-gear described in startup makes described wedge (2) move horizontally to the left or to the right.
6. self-centering fixture according to claim 5, it is characterized in that described draw-gear is thread (9), the initiating terminal of described thread (9) is fixed on described wedge (2), the end of thread (9) stretches out described self-centering fixture, and the thread (9) described in rotation can make described wedge (2) move horizontally to the left or to the right.
7. self-centering fixture according to claim 6, is characterized in that the end of described thread (9) is equipped with the turning handle (10) of rotatable thread (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420619096.5U CN204135947U (en) | 2014-10-24 | 2014-10-24 | A kind of self-centering fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420619096.5U CN204135947U (en) | 2014-10-24 | 2014-10-24 | A kind of self-centering fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204135947U true CN204135947U (en) | 2015-02-04 |
Family
ID=52412661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420619096.5U Withdrawn - After Issue CN204135947U (en) | 2014-10-24 | 2014-10-24 | A kind of self-centering fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204135947U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105479271A (en) * | 2016-01-29 | 2016-04-13 | 电子科技大学 | Sphere center centring and positioning device for five-axis machine tool error synchronous detection mechanism |
| CN105522502A (en) * | 2014-10-24 | 2016-04-27 | 株洲时代新材料科技股份有限公司 | Self-centering clamp |
| CN108050175A (en) * | 2017-12-12 | 2018-05-18 | 重庆乐迪机车车辆配件有限公司 | A kind of stationary fixture for drum type brake for car |
| CN110185348A (en) * | 2019-07-05 | 2019-08-30 | 苏州众邦轨道交通科技有限公司 | A kind of support device of subway shield door |
-
2014
- 2014-10-24 CN CN201420619096.5U patent/CN204135947U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522502A (en) * | 2014-10-24 | 2016-04-27 | 株洲时代新材料科技股份有限公司 | Self-centering clamp |
| CN105522502B (en) * | 2014-10-24 | 2017-06-09 | 株洲时代新材料科技股份有限公司 | A kind of self-centering fixture |
| CN105479271A (en) * | 2016-01-29 | 2016-04-13 | 电子科技大学 | Sphere center centring and positioning device for five-axis machine tool error synchronous detection mechanism |
| CN108050175A (en) * | 2017-12-12 | 2018-05-18 | 重庆乐迪机车车辆配件有限公司 | A kind of stationary fixture for drum type brake for car |
| CN110185348A (en) * | 2019-07-05 | 2019-08-30 | 苏州众邦轨道交通科技有限公司 | A kind of support device of subway shield door |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150204 Effective date of abandoning: 20170609 |
|
| AV01 | Patent right actively abandoned |