CN210719933U - Friction wear sample fixing clamp - Google Patents
Friction wear sample fixing clamp Download PDFInfo
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- CN210719933U CN210719933U CN201920982289.XU CN201920982289U CN210719933U CN 210719933 U CN210719933 U CN 210719933U CN 201920982289 U CN201920982289 U CN 201920982289U CN 210719933 U CN210719933 U CN 210719933U
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- friction wear
- fixing
- fixing groove
- sample
- pressing block
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Abstract
The embodiment of the application provides a friction wear sample mounting fixture, includes: the clamp comprises a clamp main body, a locking screw and a pressing block; the clamp main body can be fixed with the testing machine and comprises a fixing groove and a screw hole which is formed in the side wall of the fixing groove in a penetrating mode; the pressing block is arranged in the fixing groove, when the friction wear sample is fixed in the fixing groove, the locking screw is spirally inserted into the fixing groove from a screw hole, one end of the locking screw abuts against the pressing block, and thrust is applied to the friction wear sample through the pressing block, so that the friction wear sample and the clamp main body are relatively fixed; this application can be fast, stable and reliable fix the frictional wear sample in the anchor clamps, and then guarantee the frictional wear sample in high-speed friction test with keep complete, the even contact to the mill, can not take place abnormal eccentric wear because of the problem of fit-up gap to improve the experiment precision.
Description
Technical Field
The application relates to the field of material testing equipment, in particular to a friction wear sample fixing clamp.
Background
The friction and wear testing machine is an experimental instrument for researching the friction and wear and lubricating performance between contact surfaces of materials, and the clamping and fixing of a sample is an important link for reflecting the real friction and wear performance of a material to be tested. In order to truly restore the set working environment, the test surface of the test sample is required to be in complete and uniform contact with the grinding piece in the friction and wear test process. Meanwhile, the easy-to-mount property, high rigidity and wear resistance of the sample clamp, no damage to the sample, stable and firm clamping and small-size portability of the sample clamp are also basic requirements of the high-performance friction wear testing machine.
In the friction and wear test, the contact mode of the sample can be divided into point-surface contact, line-surface contact and surface-surface contact, and the shape of the sample and the counter-grinding piece can be divided into a plurality of ring-disc, ring-ring, pin-disc, pin-ring and the like. The frictional wear sample fixing clamp in the related art is not firm and stable in clamping a sample, so that the sample is eccentric, and the accuracy of a test result is reduced.
Therefore, the inventor provides a friction wear sample fixing clamp by virtue of experience and practice of related industries for many years so as to overcome the defects in the prior art.
SUMMERY OF THE UTILITY MODEL
To the problem among the prior art, this application provides a friction and wear sample mounting fixture, can be fast, stable and reliable fix the friction and wear sample in the anchor clamps, and then guarantee the friction and wear sample in high-speed friction and friction test with keep complete, the even contact to the mill, can not take place abnormal eccentric wear because of the problem of fit-up gap to improve the experiment precision.
In order to solve the technical problem, the application provides the following technical scheme:
in a first aspect, the present application provides a friction wear sample holding fixture, comprising:
the clamp comprises a clamp main body, a locking screw and a pressing block;
the clamp main body can be fixed with the testing machine and comprises a fixing groove and a screw hole which is formed in the side wall of the fixing groove in a penetrating mode;
the pressing block is arranged in the fixing groove, when the friction wear sample is fixed in the fixing groove, the locking screw is spirally inserted into the fixing groove from the screw hole, one end of the locking screw abuts against the pressing block, and thrust is applied to the friction wear sample through the pressing block, so that the friction wear sample and the clamp main body are kept relatively fixed.
Further, the surface of one side of the pressing block, which is abutted against the outer surface of the friction wear sample, is of an inwards-concave structure.
Further, the fixing grooves include a first fixing groove for fixing the frictional wear specimen and a second fixing groove for fixing the pressing block, the first fixing groove is communicated with the second fixing groove, and a horizontal width of the first fixing groove is smaller than a horizontal width of the second fixing groove.
Further, the pressing block includes a bottom wall and a side wall extending perpendicularly with respect to the bottom wall, and the bottom wall corresponds to the screw hole.
Further, the width of the pressing block formed on the inner surface of the side wall is the same as the width of the second fixing groove.
Further, the depth of the fixing groove is greater than half of the height of the friction wear sample.
Furthermore, an inward concave positioning pit matched with the locking screw is formed in the outer surface of the pressing block on one side corresponding to the screw hole.
Further, the clamp body includes a first fixing portion and a second fixing portion disposed below the first fixing portion and having a cross-sectional area larger than that of the first fixing portion.
Further, the first fixing portion is inserted into the testing machine upper disc in a penetrating mode along a through hole formed in the testing machine upper disc until the upper surface of the second fixing portion is attached to the lower surface of the testing machine upper disc so as to limit the movement of the first fixing portion.
Further, first fixed part is that the cross section profile comprises circular arc and sharp connection, the testing machine hanging wall the through-hole be with the through-hole that the cross sectional shape of first fixed part corresponds, the testing machine hanging wall passes through the through-hole is right first fixed part carries on spacingly.
Further, an external thread is arranged on the outer surface of the first fixing part.
Further, the first fixing portion stretches out and passes through after the through-hole lock nut with the testing machine hanging wall is connected fixedly.
Further, a gasket is arranged between the locking nut and the upper disc of the testing machine.
According to the technical scheme, the application provides a friction wear sample mounting fixture, through with the briquetting with the friction wear sample together be fixed in the fixed slot of anchor clamps main part to screw hole spiral through set up in the locking screw from the anchor clamps main part inserts in the fixed slot, so that locking screw's one end with the briquetting offsets, and passes through the briquetting to friction wear sample applys thrust, so that friction wear sample with the anchor clamps main part keeps relatively fixed, has improved stability and fastness of friction wear sample in the fixed slot, can not take place abnormal eccentric wear because of fit-up gap's problem, thereby improves the experiment precision.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of a friction wear specimen holding fixture according to the present application;
FIG. 2 is a front view of a friction wear specimen holding fixture as described herein;
FIG. 3 is a top view of a friction wear specimen holding fixture according to the present application;
FIG. 4 is a bottom view of a friction wear specimen holding fixture as described herein;
FIG. 5 is an elevation view of a compact according to the present application;
FIG. 6 is a top view of a compact according to the present application;
FIG. 7 is a left side view of a compact according to the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Considering that the clamping of the frictional wear sample mounting fixture among the correlation technique to the sample is insecure, unstable, lead to the sample to take place the eccentric wear, and then reduced the degree of accuracy of test result, this application provides a frictional wear sample mounting fixture, through in being fixed in the fixed slot of anchor clamps main part with frictional wear sample together to screw hole spiral through seting up in the locking screw from the anchor clamps main part inserts in the fixed slot, so that locking screw's one end with the briquetting offsets, and through the briquetting to the thrust is applyed to frictional wear sample, so that frictional wear sample with the anchor clamps main part keeps relatively fixed, has improved the stability and the fastness of frictional wear sample in the fixed slot, can not take place abnormal eccentric wear because of the problem of fit-up gap, thereby improves the experiment precision.
In order to fix a friction wear sample in a fixture quickly, stably and reliably and further ensure that the friction wear sample is in complete and uniform contact with a grinding disc in a high-speed friction and friction test, and abnormal eccentric wear cannot occur due to the problem of assembly clearance, so that the experimental precision is improved, the application provides an embodiment of a friction wear sample fixing fixture, and referring to fig. 1 to 3, in the embodiment, the friction wear sample fixing fixture specifically comprises a fixture main body 1, a locking screw 2 and a pressing block 3;
the clamp main body 1 can be fixed with a testing machine 4 and comprises a fixing groove and a screw hole 6 which is formed in the side wall of the fixing groove 5 in a penetrating mode;
the pressing block 3 is arranged in the fixing groove 5, when the friction wear sample 9 is fixed in the fixing groove 5, the locking screw 2 is spirally inserted into the fixing groove 5 from the screw hole 6, one end of the locking screw 2 abuts against the pressing block 3, and thrust is applied to the friction wear sample 9 through the pressing block 3, so that the friction wear sample 9 and the clamp body 1 are kept relatively fixed.
It is understood that the frictional wear test piece 9 may have different shapes according to actual production requirements, and the shape of the fixing groove 5 corresponds to the shape of the frictional wear test piece 9, so as to ensure that the frictional wear test piece 9 can be firmly fixed in the fixing groove 5.
Referring to fig. 5 to 7, optionally, in order to further fix the friction wear coupon 9 in the fixing groove 5, the pressing block 3 is further disposed in the fixing groove 5, and the pressing block 3 is closely attached to the friction wear coupon 9 and is inserted into the fixing groove 5 together, that is, the pressing block 3 fills up the gap space in the fixing groove 5, and the specific shapes of the friction wear coupon 9 and the pressing block 3 are not particularly limited herein.
Referring to fig. 1 and 2, optionally, in order to further fix the friction wear sample 9 in the fixing groove 5, the screw hole 6 is further opened through the side wall of the fixing groove 5, so that the locking screw 2 is screwed into the fixing groove 5 from the screw hole 6, at this time, one end of the locking screw 2 abuts against the side surface of the pressing block 3, and applies a thrust force to the pressing block 3, and since the other side surface of the pressing block 3 is tightly attached to the friction wear sample 9, the friction wear sample 9 is also subjected to the thrust force, so that the friction force between the friction wear sample 9 and the fixing groove 5 is increased, and further fixing is achieved.
As can be seen from the above description, according to the fixing jig for the friction wear sample provided in the embodiment of the present application, the pressing block 3 is fixed in the fixing groove 5 of the jig main body 1 together with the friction wear sample 9, and the locking screw 2 is screwed into the fixing groove 5 from the screw hole 6 formed in the jig main body 1, so that one end of the locking screw 2 abuts against the pressing block 3, and the pressing block 3 applies a pushing force to the friction wear sample 9, so that the friction wear sample 9 and the jig main body 1 are kept relatively fixed, the stability and firmness of the friction wear sample 9 in the fixing groove are improved, abnormal eccentric wear due to the problem of the assembly gap is avoided, and the experimental precision is improved.
Referring to fig. 3 and 4, as a preferred embodiment of the present application, the fixing groove 5 includes a first fixing groove 51 for fixing the frictional wear sample 9 and a second fixing groove 52 for fixing the pressing block 3, the first fixing groove 51 communicates with the second fixing groove 52, a horizontal width of the first fixing groove 51 is smaller than a horizontal width of the second fixing groove 52, and a cross section of the fixing groove 5 formed by combining the first fixing groove 51 and the second fixing groove 52 may be a "convex" type capable of fixing the pressing block 3 and the frictional wear sample 9, respectively.
As a preferred implementation manner of the embodiment of the present application, the depth of the fixing groove 5 is greater than half of the height of the friction wear sample 9, so that the friction wear sample 9 can obtain a better fixing effect, and it is ensured that the area of the friction wear sample 9 subjected to the force fixed by the pressing block is greater than half of its height, and the fixing effect of the whole friction wear sample 9 is not affected by the overlong part not inserted into the fixing groove 5 in the operation process.
Referring to fig. 4, as a preferred embodiment of the present application, a side surface of the compact 3 abutting against an outer surface of the frictional wear specimen 9 is a concave structure recessed inward, so that the frictional wear specimen 9 is disposed and fixed in the concave structure.
Specifically, the pressing block 3 includes a bottom wall 32 and a side wall 31 extending perpendicularly relative to the bottom wall 32, the bottom wall 32 corresponds to the screw hole 6, so that one end of the locking screw 2 in the screw hole 6 can abut against the bottom wall 32, and the width of the pressing block 3 formed by the side wall 31 is the same as the width of the second fixing groove 52, so that the pressing block 3 can be fixed in the second fixing groove 52.
Referring to fig. 5 and 6, as a preferred implementation manner of the embodiment of the present application, an outer surface of one side of the pressing block 3 corresponding to the screw hole 6 is provided with an inwardly recessed positioning recess 33 which is matched with the locking screw 2, and one end of the locking screw 2 is inserted into the positioning recess 33, so that stability of connection between the locking screw 2 and the pressing block 3 at this point is ensured during operation.
As a preferred implementation manner of the embodiment of the present application, the clamp body 1 includes a first fixing portion 11 and a second fixing portion 12 disposed below the first fixing portion 11 and having a cross-sectional area larger than that of the first fixing portion 11, when the first fixing portion 11 is inserted into the upper disk of the testing machine 4 along a through hole opened in the upper disk of the testing machine 4, because the cross-sectional area of the second fixing portion 12 is larger than that of the first fixing portion 11, the upper surface of the second fixing portion 12 can be attached to the lower surface of the upper disk of the testing machine 4, so that the movement of the first fixing portion 11 is limited.
Referring to fig. 3, as a preferred embodiment of the present application, the first fixing portion 11 is a cross-section formed by connecting a circular arc and a straight line, the through hole of the upper disc of the testing machine 4 is a through hole corresponding to the cross section shape of the first fixing part 11, the upper disc of the testing machine 4 limits the first fixing part 11 through the through hole, it will be appreciated that, in order to ensure that there is no relative movement between the clamp body 1 and the disk on the testing machine 4, and to better transmit the frictional torque in the frictional wear test, the cross section of the first fixing portion 11 is provided in a non-circular shape, and the through hole of the testing machine 4 is also provided in a corresponding non-circular shape, thereby, the rotation of the first fixing part 11 inserted into the through hole is limited, and the relative movement between the jig body 1 and the testing machine 4 is limited.
Referring to fig. 1, as a preferred implementation manner of the embodiment of the present application, an external thread is provided on an outer surface of the first fixing portion 11, the first fixing portion 11 extends out of the through hole and then passes through the locking nut 8 and the disk of the testing machine 4 is fixedly connected, and since the second fixing portion 12 disposed below the disk of the testing machine 4 is already limited to the first fixing portion 11, the first fixing portion 11 is spirally locked by the locking nut 8 disposed above the disk of the testing machine 4, and the first fixing portion 11 is further fixed.
Referring to fig. 1, as a preferred implementation manner of the embodiment of the present application, a gasket 7 is disposed between the lock nut 8 and the upper disc of the testing machine 4, so as to improve the fixing effect of the lock nut 8.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.
Claims (13)
1. A friction wear sample mounting fixture, comprising: the clamp comprises a clamp main body, a locking screw and a pressing block;
the clamp main body can be fixed with the testing machine and comprises a fixing groove and a screw hole which is formed in the side wall of the fixing groove in a penetrating mode;
the pressing block is arranged in the fixing groove, when the friction wear sample is fixed in the fixing groove, the locking screw is spirally inserted into the fixing groove from the screw hole, one end of the locking screw abuts against the pressing block, and thrust is applied to the friction wear sample through the pressing block, so that the friction wear sample and the clamp main body are kept relatively fixed.
2. The friction wear specimen holding jig according to claim 1, wherein a side surface of the pressing block which abuts against an outer surface of the friction wear specimen is an inwardly recessed concave structure.
3. The friction wear sample fixing jig according to claim 2, wherein the fixing grooves include a first fixing groove for fixing the friction wear sample and a second fixing groove for fixing the pressing block, the first fixing groove communicates with the second fixing groove, and a horizontal width of the first fixing groove is smaller than a horizontal width of the second fixing groove.
4. The friction wear specimen holding fixture of claim 3, wherein the press block includes a bottom wall and a side wall extending perpendicularly with respect to the bottom wall, the bottom wall corresponding to the screw hole.
5. The friction wear specimen fixing jig according to claim 4, wherein the pressing piece formed on the inner surface of the side wall has a width identical to that of the second fixing groove.
6. The friction wear specimen holding jig of claim 1, wherein the depth of the holding groove is greater than half the height of the friction wear specimen.
7. The friction wear sample fixing clamp according to claim 1, wherein an outer surface of the pressing block on a side corresponding to the screw hole is provided with an inwardly recessed positioning recess for engaging with the locking screw.
8. The friction wear sample holding jig according to claim 1, wherein the jig main body includes a first holding portion and a second holding portion which is provided below the first holding portion and has a cross-sectional area larger than that of the first holding portion.
9. The friction wear sample fixing clamp according to claim 8, wherein the first fixing portion is inserted into the testing machine upper disc through a through hole formed in the testing machine upper disc until an upper surface of the second fixing portion is attached to a lower surface of the testing machine upper disc so as to limit movement of the first fixing portion.
10. The friction wear sample fixing clamp according to claim 9, wherein the first fixing portion is formed by connecting an arc and a straight line in a cross-sectional profile, the through hole of the upper disc of the testing machine is a through hole corresponding to the cross-sectional shape of the first fixing portion, and the upper disc of the testing machine limits the first fixing portion through the through hole.
11. The friction wear sample holding jig of claim 8, wherein an external thread is provided on an outer surface of the first holding portion.
12. The friction wear sample fixing clamp according to claim 9, wherein the first fixing portion is fixedly connected with the upper disc of the testing machine through a locking nut after extending out of the through hole.
13. The friction wear specimen holding jig of claim 12, wherein a washer is provided between the lock nut and the testing machine upper plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920982289.XU CN210719933U (en) | 2019-06-27 | 2019-06-27 | Friction wear sample fixing clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920982289.XU CN210719933U (en) | 2019-06-27 | 2019-06-27 | Friction wear sample fixing clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210719933U true CN210719933U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920982289.XU Active CN210719933U (en) | 2019-06-27 | 2019-06-27 | Friction wear sample fixing clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210719933U (en) |
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2019
- 2019-06-27 CN CN201920982289.XU patent/CN210719933U/en active Active
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