CN205301070U - O type circle test fixture - Google Patents
O type circle test fixture Download PDFInfo
- Publication number
- CN205301070U CN205301070U CN201521027136.8U CN201521027136U CN205301070U CN 205301070 U CN205301070 U CN 205301070U CN 201521027136 U CN201521027136 U CN 201521027136U CN 205301070 U CN205301070 U CN 205301070U
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- China
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- test fixture
- ball bearing
- deep groove
- groove ball
- utility
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Abstract
The utility model provides a O type circle test fixture, it includes the main part, the one end of main part is equipped with the spread groove, install deep groove ball bearing in the spread groove, the spacing ring has been cup jointed to deep groove ball bearing's outside. The utility model discloses a O type circle test fixture, can realize O type circle at the free rotation of tensile in -process, greatly reduced the frictional force between O type circle and the anchor clamps, improve test data's accuracy.
Description
Technical field
This utility model is related to a kind of test fixture, more particularly to the O test fixture used by the test O performance in a kind of material properties test device technique field.
Background technology
At present, O is a kind of conventional rubber element, it is adaptable to be arranged in various plant equipment, in the temperature of regulation, pressure and different gas, liquid medium, seals under static or kinestate. It has good seal performance, production technology is simple, mounting or dismounting are convenient and low cost and other advantages.
The processing technology of O is generally injection moulding and compression molding two kinds. The cure time of O is typically in 5��6 minutes under normal circumstances. In order to improve the production efficiency of O, the groove digging out multiple O in same mould in most cases can be adopted. In injection moulding or compression molding process, sizing material flows when being full of die cavity, and orientation phenomenon can occur the rubber macromolecular chain in sizing material. The sizing material of flowing more or less has the fusion situation of flow surface mutually. This fusion face will become weak spot when O uses in the future.
It addition, popular a kind of politef is coated with O on the market now. It is internal is elastic nitrile rubber, the film coated of outside politef preferably. The processing technology of this O is increasingly complex, it is that nitrile rubber and the polytetrafluoroethylene film of certain diameter of section are extruded at same die orifice jointly, then adhesive tape is cut into the O of certain internal diameter, then it is carried out fusion weld at section, form a complete O. The O weak spot made under such technique becomes apparent from.
When O is carried out mechanics properties testing, owing to O to hang on fixture, therefore producing therebetween frictional resistance, in cushion rubber drawing process, first there is elastic deformation in cushion rubber, it may occur that very big elastic deformation. This frictional resistance can hinder the fracture of O weak spot, causes test data inaccurate.
Therefore, it is necessary to provide a kind of novel O test fixture, overcome drawbacks described above.
Utility model content
The purpose of this utility model is to provide a kind of O test fixture, it may be achieved freely rotatable in drawing process of O, greatly reduces the frictional force between O and fixture, improves the accuracy of test data.
Above-mentioned purpose of the present utility model can adopt following technical proposal to realize:
This utility model provides a kind of O test fixture, and it includes main body, and one end of described main body is provided with link slot, is provided with deep groove ball bearing in described link slot, and the outer cover of described deep groove ball bearing is connected to spacing ring.
In a preferred embodiment, the outer cover of described main body is connected to adjustment ring.
In a preferred embodiment, the other end of described main body is provided with connecting hole.
In a preferred embodiment, described spacing ring interference fit is connected to the outside of described deep groove ball bearing.
In a preferred embodiment, one end of described main body is provided with two clamping walls, forms described link slot between two described clamping walls.
In a preferred embodiment, two described clamping walls being respectively equipped with pin-and-hole, be equipped with bearing pin in said two pin-and-hole, described deep groove ball bearing is socketed on described bearing pin.
Feature and the advantage of O test fixture of the present utility model be:
(1) deep groove ball bearing designed, can meet the stress of tensile testing machine load 2t under corresponding intensity, and frictional force be down to when O is tested minimum.
(2) design of spacing ring arc surface ensure that O uniform force in drawing process, and ensures that O, in bottom land position, sidesway does not occur.
(3) overall structure of this O test fixture ensure that O is in test process middle section at grade, and the elastic deformation occurred in drawing process makes spacing ring rotate freely, it is ensured that the accuracy of test data.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of O test fixture of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments. Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
As it is shown in figure 1, this utility model provides a kind of O test fixture, it includes main body 1, and one end of described main body 1 is provided with link slot 11, is provided with deep groove ball bearing 2 in described link slot 11, and the outer cover of described deep groove ball bearing 2 is connected to spacing ring 3.
Specifically, one end of main body 1 is provided with two clamping walls 12, forms this link slot 11 between two clamping walls 12. In the present embodiment, two clamping walls 12 are respectively equipped with pin-and-hole, in pin-and-hole, are equipped with bearing pin 4. Deep groove ball bearing 2 is positioned at link slot 11 and is fixedly connected on bearing pin 4, in this utility model, it is preferable that the deep groove ball bearing 2 that diameter is less, selects the maximum outside diameter of deep groove ball bearing 2, minimum diameter and width by Mechanics Calculation; Spacing ring 3 interference fit is connected on the outer wall of deep groove ball bearing 2, also hammer in spacing ring 3 by deep groove ball bearing 2 so that the two forms an entirety, in the present embodiment, the external annulus of spacing ring 3 is formed with ring groove 31, in this utility model, the ring groove 31 of spacing ring 3 is designed to the arc surface that radius is 4mm, and this arc surface can bearing cross-section diameter be �� 3.1mm, �� 3.55mm, the O of �� 5.3mm, �� 5.7mm, �� 7.0mm.
The other end of main body 1 is provided with connecting hole 13, and this connecting hole 13 is for being fixedly connected in the measuring head of puller system by main body 1 and being fixed by bearing pin; Further, being also socketed with adjustment ring 5 outside the other end of main body 1, this adjustment ring 5 is threaded on the body 1, after main body 1 is connected on the measuring head of puller system, by tightening adjustment ring 5, the measuring head of main body 1 relative tension machine can be made not shake.
In assembling, forming an entirety, be fixed in main body 1 by this entirely through bearing pin 4 after the deep groove ball bearing 2 of this O test fixture design and spacing ring 3 interference fit, deep groove ball bearing 2 and bearing pin 4 adopt matched in clearance.
In test process, overlap O test fixtures of the present utility model by two symmetrically placed and be connected on puller system, O is placed in the ring groove 31 of spacing ring 3 of two O test fixtures, installs bearing pin 4 and carry out pull test. Due to O generation elastic deformation in drawing process, shorter distance produces relatively large deformation and can cause that spacing ring 3 rotates, if frictional resistance relatively conference causes O delayed fracture. O test fixture of the present utility model, owing to being provided with deep groove ball bearing 2 inside spacing ring 3, spacing ring 3 rotational resistance is only small, it is possible to make frictional force be down to minimum, it is ensured that the accuracy of test data.
Feature and the advantage of O test fixture of the present utility model be:
(1) deep groove ball bearing 2 designed, can meet the stress of tensile testing machine load 2t under corresponding intensity, and frictional force be down to when O is tested minimum.
(2) design of the arc surface of the ring groove 31 of spacing ring 3 ensure that O uniform force in drawing process, and ensures that O, in bottom land position, sidesway does not occur.
(3) overall structure of this O test fixture ensure that O is in test process middle section at grade, and the elastic deformation occurred in drawing process makes spacing ring rotate freely, it is ensured that the accuracy of test data.
The foregoing is only several embodiment of the present utility model, this utility model embodiment can be carried out various change or modification without deviating from spirit and scope of the present utility model according to application documents disclosure by those skilled in the art.
Claims (6)
1. an O test fixture, it is characterised in that it includes main body, one end of described main body is provided with link slot, is provided with deep groove ball bearing in described link slot, and the outer cover of described deep groove ball bearing is connected to spacing ring.
2. O test fixture as claimed in claim 1, it is characterised in that the outer cover of described main body is connected to adjustment ring.
3. O test fixture as claimed in claim 1, it is characterised in that the other end of described main body is provided with connecting hole.
4. O test fixture as claimed in claim 1, it is characterised in that described spacing ring interference fit is connected to the outside of described deep groove ball bearing.
5. O test fixture as claimed in claim 1, it is characterised in that one end of described main body is provided with two clamping walls, forms described link slot between two described clamping walls.
6. O test fixture as claimed in claim 5, it is characterised in that being respectively equipped with pin-and-hole on two described clamping walls, be equipped with bearing pin in said two pin-and-hole, described deep groove ball bearing is socketed on described bearing pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521027136.8U CN205301070U (en) | 2015-12-10 | 2015-12-10 | O type circle test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521027136.8U CN205301070U (en) | 2015-12-10 | 2015-12-10 | O type circle test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205301070U true CN205301070U (en) | 2016-06-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521027136.8U Active CN205301070U (en) | 2015-12-10 | 2015-12-10 | O type circle test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205301070U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110389073A (en) * | 2019-08-30 | 2019-10-29 | 贵州航天精工制造有限公司 | It is a kind of for measuring the test tool of O-ring seal tensile property |
-
2015
- 2015-12-10 CN CN201521027136.8U patent/CN205301070U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110389073A (en) * | 2019-08-30 | 2019-10-29 | 贵州航天精工制造有限公司 | It is a kind of for measuring the test tool of O-ring seal tensile property |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |