CN204346824U - Can specimen holder in self-leveling end surface contact type - Google Patents
Can specimen holder in self-leveling end surface contact type Download PDFInfo
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- CN204346824U CN204346824U CN201420731157.7U CN201420731157U CN204346824U CN 204346824 U CN204346824 U CN 204346824U CN 201420731157 U CN201420731157 U CN 201420731157U CN 204346824 U CN204346824 U CN 204346824U
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- matrix
- pressing plate
- leveling
- specimen holder
- sample
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Abstract
The utility model discloses one can specimen holder in self-leveling end surface contact type, belong to a kind of specimen holder for friction wear testing machine, comprise matrix, matrix is fixed on base plate, and matrix is also flexibly connected with matrix pressing plate, matrix is configured to concentric scrobicular ring sphere jointly with the inner side of matrix pressing plate, and base plate is provided with leveling ball-and-socket and leveling ball, and described leveling ball and leveling ball-and-socket size match and be placed in the inside of leveling ball-and-socket; Described upper specimen holder also comprises chuck body and fixture pressing plate, the outside of described chuck body and fixture pressing plate forms the concentric ring sphere matched with described concentric scrobicular ring sphere jointly, and the inner side of chuck body and fixture pressing plate is equipped with the coaxial Semi-cylindrical concave matched with sample.Chuck body and fixture pressing plate can ensure the stability maintenance after sample holder, and can make the complete uniform contact of the test surfaces of upper and lower sample, the angle between upper and lower sample is disappeared, effectively improves the accuracy of friction-wear test data.
Description
Technical field
The utility model relates to a kind of specimen holder for friction wear testing machine, and in particular, the utility model relates generally to one can specimen holder in self-leveling end surface contact type.
Background technology
Owing to there is relative motion, make between the mechanical component that contact with each other because friction causes part injury.Fretting wear is a kind of injury pattern occurred in the mechanical component of minimum amplitude motion, is a kind of damage type the most common, the most general in engineering.Being carried out the friction and wear behavior of research material by simulation actual condition environment, is the effective means of elevating gear part life.Friction wear testing machine is a kind of scientific instrument for rubbing wear and greasy property between research material surface in contact, and gripping of experiment sample is the important step truly reflecting material friction wear properties.In order to can real simulation actual condition environment, frictional wear experiment requires that the test surfaces of upper and lower sample must complete uniform contact.The specimen holder of an excellent performance except ensureing the complete uniform contact in upper and lower sample testing face, the easy clamping of fixture, high rigidity, wear-resistant, do not damage sample, clamping stablizes firmly and small portable performance is also the basic demand of high performance grinding abrasion tester.Especially for micro-moving frictional wear experiment, due to the amplitude very little (usually in micron level) of motion, more the rigidity of fixture and clamping stability are had higher requirement.
At present, the domestic patent about sample for testing machine fixture focuses mostly in material stretch test machine, if publication number is the Chinese utility model patent of CN103645092, Authorization Notice No. is the Chinese utility model patent etc. of CN203629956, and the specimen holder being directed to friction wear testing machine yet there are no granted patent.In frictional wear experiment, common sample contacts mode mainly contains point-face contact, line-face contacts, face-face contacts three kinds of forms.Current market reaches the standard grade-face contact, the technical comparative maturity of specimen holder in point-face contact, and then little for the upper specimen holder realizing face-face contact friction wear test.On traditional face-face contact type, sample generally all adopts rectangular block shape sample, and because fixture will clamp 4 faces simultaneously, so sample is difficult to clamping, and clamping easily causes sample to tilt.Further, due to the impact of machining precision, assembly precision etc., in face-face contact type friction-wear test, the angle that is less can between upper and lower sample testing face, all be had, can not complete uniform contact, thus cause the deviation of test data of experiment.Thus be necessary do further research for the clamp structure of existing upper sample and improve.
Utility model content
One of the purpose of this utility model is for above-mentioned deficiency, there is provided one can specimen holder in self-leveling end surface contact type, can not sample in stable holding in friction-wear test to expect to solve in prior art end surface contact type fixture, and uniform contact cannot there is eccentric load in sample up and down, causes the technical matterss such as friction-wear test data deviation.
For solving above-mentioned technical matters, the utility model by the following technical solutions:
One provided by the utility model can specimen holder in self-leveling end surface contact type, comprise matrix, described matrix is fixed on base plate, and described matrix is also flexibly connected with matrix pressing plate, described matrix is configured to concentric scrobicular ring sphere jointly with the inner side of matrix pressing plate, and base plate is provided with leveling ball-and-socket and leveling ball, described leveling ball and leveling ball-and-socket size match and are placed in the inside of leveling ball-and-socket; Described upper specimen holder also comprises chuck body and fixture pressing plate, the outside of described chuck body and fixture pressing plate forms the concentric ring sphere matched with described concentric scrobicular ring sphere jointly, and the inner side of chuck body and fixture pressing plate is equipped with the coaxial Semi-cylindrical concave matched with sample, for by chuck body and fixture pressing plate jointly by sample envelope to be held wherein.
As preferably, further technical scheme is: the outside of described matrix and matrix pressing plate forms coaxial cylindrical surface jointly, and described matrix is flexibly connected by bearing pin one end with matrix pressing plate, and matrix pressing plate is fixedly connected with matrix by lock-screw or bolt.
Further technical scheme is: described matrix with one end that matrix pressing plate is connected is respectively equipped with mutually corresponding radial screw.
Further technical scheme is: described leveling ball-and-socket is placed in the center of matrix and matrix pressing plate inner concentric scrobicular ring sphere, for making leveling ball-and-socket all equal with the air line distance of its optional position in same level to concentric scrobicular ring sphere.
Further technical scheme is: the cambered surface angle of described matrix inner and outer is greater than the cambered surface angle of matrix pressing plate inner and outer.
Further technical scheme is: the cambered surface angle of described chuck body inner and outer is greater than the cambered surface angle of fixture pressing plate inner and outer.
Further technical scheme is: described base plate is rectangle, and is equipped with screw near four of described base plate angles, for upper specimen holder is arranged on friction wear testing machine.
Further technical scheme is: described leveling ball-and-socket is equal with the maximum radius of leveling ball.
Compared with prior art, one of the beneficial effects of the utility model are: chuck body and fixture pressing plate have the coaxial Semi-cylindrical concave matched with sample, ensure that the accuracy of axial location and the stability maintenance of clamping after sample holder, and be conducive to the operation of upper sample centering in test, and after sample clamps by chuck body and fixture pressing plate by leveling ball at concentric scrobicular ring ball rotation in surface, until the complete uniform contact of test surfaces of upper and lower sample, angle between upper and lower sample is disappeared, effectively improves the accuracy of friction-wear test data; Simultaneously one provided by the utility model can in self-leveling end surface contact type specimen holder structure simple, can be used for all kinds of cylindrical tack, the end contact of cylindrical square toes sample and the some face contact friction wear test of cylindrical bulb sample by adjustment cambered surface and radius size, range of application is wide.
Accompanying drawing explanation
Fig. 1 is the structural representation for illustration of the utility model embodiment;
Fig. 2 is for illustration of matrix and matrix pressure plate structure schematic diagram in the utility model embodiment;
Fig. 3 is the structural representation for illustration of chuck body and fixture pressing plate in the utility model embodiment;
Fig. 4 is the structural representation for illustration of sample in the utility model embodiment;
In figure, 1 be matrix, 2 be matrix pressing plate, 3 be concentric scrobicular ring sphere, 4 be leveling ball-and-socket, 5 be leveling ball, 6 be chuck body, 7 be fixture pressing plate, 8 be concentric ring sphere, 9 be coaxial Semi-cylindrical concave, 10 be coaxial cylindrical surface, 11 be lock-screw or bolt, 12 be base plate, 13 be screw, 14 be sample, 15 be bearing pin.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further elaborated.
Shown in figure 1 and Fig. 2, an embodiment of the present utility model is that one can specimen holder in self-leveling end surface contact type, comprise matrix 1, this matrix 1 is fixed on base plate 12, and matrix 1 is also flexibly connected with matrix pressing plate 2, what is more important, aforementioned substrates 1 is configured to concentric scrobicular ring sphere 3 jointly with the inner side of matrix pressing plate 2, and also need to set up leveling ball-and-socket 4 and leveling ball 5 on base plate 12, and leveling ball 5 need match with leveling ball-and-socket 4 size, and be placed in the inside of leveling ball-and-socket 4; In addition, shown in composition graphs 3, chuck body 6 and fixture pressing plate 7 is also provided with in upper specimen holder in the present embodiment, and chuck body 6 and fixture pressing plate 7 are all placed in the inside of matrix 1 and matrix pressing plate 2, and chuck body 6 forms with the outside of fixture pressing plate 7 the concentric ring sphere 8 matched with concentric scrobicular ring sphere 3 jointly, and chuck body 6 is equipped with the inner side of fixture pressing plate 7 the coaxial Semi-cylindrical concave 9 matched with sample, for common by sample envelope to be held wherein by chuck body 6 and fixture pressing plate 7.And preferably, for ensureing leveling ball-and-socket 4 and leveling ball 5 conformability each other, can their maximum radius be set to equal.
In the present embodiment, chuck body and fixture pressing plate have the coaxial Semi-cylindrical concave matched with sample, ensure that the accuracy of axial location and the stability maintenance of clamping after sample holder, and be conducive to the operation of upper sample centering in test, and after sample clamps by chuck body and fixture pressing plate by leveling ball at concentric scrobicular ring ball rotation in surface, until the complete uniform contact of test surfaces of upper and lower sample, eccentric load is disappeared, effectively improves the accuracy of friction-wear test data.
And on the other hand, for convenience of fixture processing and the installation on friction wear testing machine, matrix 1 also can be made jointly to form coaxial cylindrical surface 10 with the outside of matrix pressing plate 2, and matrix 1 is flexibly connected by bearing pin 15 one end with matrix pressing plate 2, and matrix pressing plate 2 is fixedly connected with matrix 1 by lock-screw or bolt 11.
On the basis of the above-mentioned annexation of matrix 1 and matrix pressing plate 2, more concrete vibrational power flow is, matrix 1 with one end that matrix pressing plate 2 is connected is arranged respectively mutual corresponding radial screw.
With reference to shown in figure 3, for the exploitativeness of further lifting clamp leveling, inventor also carries out repetition test to the position of above-mentioned leveling ball-and-socket 4, think that comparatively preferred position is center leveling ball-and-socket 4 being placed in matrix 1 and matrix pressing plate 2 inner concentric scrobicular ring sphere 3, for making leveling ball-and-socket 4 all equal with the air line distance of its optional position in same level to concentric scrobicular ring sphere 3.Thus when leveling ball 5 coordinates sample and fixture to rotate, more easily make lifting workpiece uniform contact, stop misalignment angle between the two.
As Fig. 2 and illustrated in fig. 3, in the embodiment that the utility model is more preferably for technical solution problem, contact for ensureing that chuck body 6 and fixture pressing plate 7 can coincide with the outside surface of sample when clamping sample, avoid occurring that chuck body 6 and fixture pressing plate 7 are subject to the problem that sample conflicts after closed, the cambered surface angle of chuck body 6 inner and outer can be set to the cambered surface angle being greater than fixture pressing plate 7 inner and outer, same aforementioned principles, also the cambered surface angle of matrix 1 inner and outer can be greater than the cambered surface angle of matrix pressing plate 2 inner and outer, such as in the present embodiment, the cambered surface angle of chuck body 6 inner and outer is all set to 180 degree, the cambered surface angle of the inner and outer of fixture pressing plate 7 is all set to 175 degree, same, the cambered surface angle of matrix 1 inner and outer is also set to 180 degree, the cambered surface angle of matrix pressing plate 2 inner and outer is set to 175 degree, remaining 5 degree is then headspace, is more conducive to clamp sample and matrix clamping device.
Install on friction wear testing machine for convenience of fixture simultaneously, screw 13 can be reserved on above-mentioned base plate 12, be fixed by bolt, and the position that inventor considers screw on conventional friction abrasion tester is arranged, above-mentioned base plate 12 is arranged rectangle, and screw 13 is arranged near rectangle four angles.
Shown in 3, the above-mentioned preferred embodiment of the utility model in actual use, leveling ball 5 is put into the leveling ball-and-socket 4 on base plate 12, again sample 14 is put between chuck body 6 and fixture pressing plate 7, then three is put in the lump between matrix 1 and matrix pressing plate 2, matrix 1 is connected by bearing pin 15 with matrix pressing plate 2, matrix pressing plate 2 can rotate around bearing pin 15 axis, tighten lock screw, matrix 1 and matrix pressing plate 2 are while inwardly extrusion clamp body 6 and fixture pressing plate 7 clamp sample, matrix 1 matches with matrix pressing plate 2, when keeping current sample contacts state, chuck body 6 and fixture pressing plate 7 are clamped simultaneously and fix.
Now, chuck body 6 and fixture pressing plate 7, ensure that alignment and the stability of sample holder by coaxial Semi-cylindrical concave 9 by sample envelope wherein.Concentric ring sphere 8 is tangent with concentric scrobicular ring sphere 3, and specimen holder can be rotated freely in matrix; Leveling ball 5 is tangent with leveling ball-and-socket 4, and it is simultaneously tangent with the bottom surface of chuck body 6, thus make very little eccentric load that chuck body just can be made to rotate in concentric scrobicular ring sphere 3, until the complete uniform contact of test surfaces of upper and lower sample, eccentric load disappears, and the angle namely up and down between sample testing face is 0 or close to 0.As shown in Figure 4, the utility model can be used for the end contact friction-wear test of cylindrical tack, cylindrical square toes sample according to above-mentioned assembling mode, also can be used for the some face contact friction wear test of cylindrical bulb sample.
Than that described above, one provided by the utility model self-leveling end surface contact type also can have following features by specimen holder:
1, adopt cylindric sample, sample has same radius-of-curvature with sample holder mask, ensure that the accuracy of axial location after sample holder, solves the problem of sample centering;
2, rely on screw to hold out against the mode of sample from conventional brace different, the utility model fixes sample by pressing plate, overcomes screw forward ends thereof sample in the process of tightening screw and easily causes the defect of circular sample cylinder local damage.Make a sample both may be used for end surface contact type frictional wear experiment, also can be used for line face contact type frictional wear experiment, just improve the utilization factor of sample;
4 specimen holders on this can clamp cylindrical tack sample and end surface contact type frictional wear experiment carried out by cylindrical square toes sample, also can clamp cylindrical bulb sample and carry out a face contact type frictional wear experiment, a kind of fixture two kinds of purposes;
5, by the radius-of-curvature of sample fixing coaxial Semi-cylindrical concave on amendment chuck body and fixture pressing plate, fixture is made can to clamp the cylindrical sample of any radius;
6, the clamping that fixture realizes sample by bearing pin and a lock-screw or bolt is fixed, and makes specimen clamping, dismounting more simple and convenient;
7, because specimen holder can rotate freely in matrix, under the effect of plus load, upper sample freely can rotate along with the state of lower sample plane, thus makes upper and lower sample testing face reach the object of complete uniform contact, and fixes contact condition by lock-screw;
8, whole clamp structure is compact, number of parts is few, volume is little.The whole height of fixture can be less than 20mm, is conducive to reducing moment of flexure to the impact of test result, improves measuring accuracy;
9, the critical part matrix of fixture, matrix pressing plate, specimen holder, fixture pressing plate, leveling ball are after heat treatment made by wear-resisting, corrosion-resistant material GCr15 high-carbon-chromium bearing steel, long service life, Maintenance free.
Than that described above, also it should be noted that spoken of in this manual " embodiment ", " another embodiment ", " embodiment " etc., refer to the specific features, structure or the feature that describe in conjunction with this embodiment and be included at least one embodiment of the application's generality description.Multiple place occurs that statement of the same race is not necessarily refer to same embodiment in the description.Furthermore, when describing specific features, structure or a feature in conjunction with any embodiment, what advocate is also drop in scope of the present utility model to realize this feature, structure or feature in conjunction with other embodiments.
Although be described the utility model with reference to multiple explanatory embodiment of the present utility model here, but, should be appreciated that, those skilled in the art can design a lot of other amendment and embodiment, these amendments and embodiment will drop within spirit disclosed in the present application and spirit.More particularly, in the scope of, accompanying drawing open in the application and claim, multiple modification and improvement can be carried out to the building block of subject combination layout and/or layout.Except the modification of carrying out building block and/or layout is with except improvement, to those skilled in the art, other purposes also will be obvious.
Claims (8)
1. one kind can specimen holder in self-leveling end surface contact type, comprise matrix (1), described matrix (1) is fixed on base plate (12), and described matrix (1) is also flexibly connected with matrix pressing plate (2), it is characterized in that: described matrix (1) and the inner side of matrix pressing plate (2) are configured to concentric scrobicular ring sphere (3) jointly, and base plate (12) is provided with leveling ball-and-socket (4) and leveling ball (5), described leveling ball (5) and leveling ball-and-socket (4) size match and are placed in the inside of leveling ball-and-socket (4);
Described upper specimen holder also comprises chuck body (6) and fixture pressing plate (7), described chuck body (6) forms with the outside of fixture pressing plate (7) the concentric ring sphere (8) matched with described concentric scrobicular ring sphere (3) jointly, and chuck body (6) is equipped with the inner side of fixture pressing plate (7) the coaxial Semi-cylindrical concave (9) matched with sample, for common by sample envelope to be held wherein by chuck body (6) and fixture pressing plate (7).
2. according to claim 1 can specimen holder in self-leveling end surface contact type, it is characterized in that: described matrix (1) forms coaxial cylindrical surface (10) jointly with the outside of matrix pressing plate (2), and described matrix (1) is flexibly connected by bearing pin one end with matrix pressing plate (2), and matrix pressing plate (2) is fixedly connected with matrix (1) by lock-screw or bolt (11).
3. according to claim 1 and 2 can specimen holder in self-leveling end surface contact type, it is characterized in that: described matrix (1) with one end that matrix pressing plate (2) is connected is respectively equipped with mutually corresponding radial screw.
4. according to claim 1 and 2 can specimen holder in self-leveling end surface contact type, it is characterized in that: described leveling ball-and-socket (4) is placed in the center of matrix (1) and matrix pressing plate (2) inner concentric scrobicular ring sphere (3), for making leveling ball-and-socket (4) all equal with the air line distance of its optional position in same level to concentric scrobicular ring sphere (3).
5. according to claim 1 can specimen holder in self-leveling end surface contact type, it is characterized in that: the cambered surface angle of described matrix (1) inner and outer is greater than the cambered surface angle of matrix pressing plate (2) inner and outer.
6. according to claim 5 can specimen holder in self-leveling end surface contact type, it is characterized in that: the cambered surface angle of described chuck body (6) inner and outer is greater than the cambered surface angle of fixture pressing plate (7) inner and outer.
7. according to claim 1 can specimen holder in self-leveling end surface contact type, it is characterized in that: described base plate (12) is rectangle, and be equipped with screw (13) near four angles of described base plate (12), for upper specimen holder is arranged on friction wear testing machine.
8. according to claim 1 can specimen holder in self-leveling end surface contact type, it is characterized in that: described leveling ball-and-socket (4) is equal with the maximum radius of leveling ball (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420731157.7U CN204346824U (en) | 2014-11-29 | 2014-11-29 | Can specimen holder in self-leveling end surface contact type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420731157.7U CN204346824U (en) | 2014-11-29 | 2014-11-29 | Can specimen holder in self-leveling end surface contact type |
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| Publication Number | Publication Date |
|---|---|
| CN204346824U true CN204346824U (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420731157.7U Withdrawn - After Issue CN204346824U (en) | 2014-11-29 | 2014-11-29 | Can specimen holder in self-leveling end surface contact type |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406844A (en) * | 2014-11-29 | 2015-03-11 | 南京航汇力智能科技有限公司 | End surface contact type upper specimen clamp capable of automatically leveling |
| CN107997302A (en) * | 2018-01-30 | 2018-05-08 | 东莞市恒宇仪器有限公司 | A kind of sole skid resistance test machine |
| PL424623A1 (en) * | 2018-02-20 | 2019-08-26 | Uniwersytet Śląski | Holder for the tribological tests conducting machines |
| CN113155661A (en) * | 2021-05-08 | 2021-07-23 | 河南科技大学 | Reciprocating type friction and wear test and use fixture device and reciprocating type friction and wear test machine |
-
2014
- 2014-11-29 CN CN201420731157.7U patent/CN204346824U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406844A (en) * | 2014-11-29 | 2015-03-11 | 南京航汇力智能科技有限公司 | End surface contact type upper specimen clamp capable of automatically leveling |
| CN104406844B (en) * | 2014-11-29 | 2017-02-22 | 南京航汇力智能科技有限公司 | End surface contact type upper specimen clamp capable of automatically leveling |
| CN107997302A (en) * | 2018-01-30 | 2018-05-08 | 东莞市恒宇仪器有限公司 | A kind of sole skid resistance test machine |
| CN107997302B (en) * | 2018-01-30 | 2024-02-13 | 东莞市恒宇仪器有限公司 | Sole antiskid testing machine |
| PL424623A1 (en) * | 2018-02-20 | 2019-08-26 | Uniwersytet Śląski | Holder for the tribological tests conducting machines |
| CN113155661A (en) * | 2021-05-08 | 2021-07-23 | 河南科技大学 | Reciprocating type friction and wear test and use fixture device and reciprocating type friction and wear test machine |
| CN113155661B (en) * | 2021-05-08 | 2024-02-27 | 河南科技大学 | Clamp device for reciprocating frictional wear test and reciprocating frictional wear testing machine |
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Legal Events
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20150520 Effective date of abandoning: 20170222 |
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| AV01 | Patent right actively abandoned |