CN217006902U - Corrosion coupon sample clamping device - Google Patents
Corrosion coupon sample clamping device Download PDFInfo
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- CN217006902U CN217006902U CN202123090188.8U CN202123090188U CN217006902U CN 217006902 U CN217006902 U CN 217006902U CN 202123090188 U CN202123090188 U CN 202123090188U CN 217006902 U CN217006902 U CN 217006902U
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- 230000007797 corrosion Effects 0.000 title claims abstract description 30
- 238000005260 corrosion Methods 0.000 title claims abstract description 30
- 238000005498 polishing Methods 0.000 claims abstract description 19
- 238000007517 polishing process Methods 0.000 abstract description 9
- 125000006850 spacer group Chemical group 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of mechanical clamps, and discloses a clamping device for a corrosion coupon sample, which comprises a clamping disk, a gasket and a locking screw, wherein the clamping disk is provided with a plurality of stepped through holes along the vertical direction, the plurality of stepped through holes are distributed in a circumferential array around the center of the clamping disk, and the lower ends of the stepped through holes are provided with positioning support surfaces; the locking screw is installed on the lateral part of the clamping disc along the horizontal direction. When the sample is clamped, the first end face of the gasket is abutted to the positioning support face, the sample is installed in the stepped through hole, the first end face of the sample is abutted to the second end face of the gasket, the second end face of the sample protrudes out of the lower end face of the clamping disc, and the locking screw can be screwed into the stepped through hole to tightly jack the sample against the inner wall of the stepped through hole. The clamping device is simple in structure, can conveniently and quickly clamp and take down a sample, and the locking screw and the gasket can be matched with the fixed and positioned sample, so that the stress of the sample in the grinding and polishing process is uniform, the sample is not easy to fluctuate, and the grinding and polishing quality is ensured.
Description
Technical Field
The utility model relates to the technical field of mechanical clamps, in particular to a clamping device for a corrosion coupon sample.
Background
The corrosion resistance of the material is related to the long-term service performance of the material, and is a problem which must be considered in engineering use. There are various ways to study the corrosion resistance of materials, and among them, the corrosion coupon experiment has been widely used for a long time because of its advantages of good economy, strong reliability and strong operability. In the corrosion coupon experiment, the surface polishing treatment of the corrosion coupon sample is a very critical step, because the surface state of the sample greatly influences the corrosion resistance of the material.
In the traditional technology, the corrosion coupon is ground and polished in a manual sample holding mode, the grinding and polishing mode is low in efficiency, the consistency of the surface state of the obtained sample is poor due to the unavoidable fluctuation of the manual grinding and polishing mode, the result variance of a corrosion coupon experiment is large, and the experiment quality is influenced. At present, automatic polishing machines have been developed on the market to replace manual hand-held polishing work. However, for some clamping devices suitable for automatic polishing machines, when a sample is clamped, the sample cannot be effectively fixed and positioned, and the sample still has great volatility in the polishing process, and still has great influence on experimental results to a certain extent. In addition, some current clamping device, when centre gripping and take off the sample, especially when taking off the sample, the operation process is comparatively loaded down with trivial details, leads to the inefficiency of experiment.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a corrosion coupon sample clamping device which can conveniently clamp and take down a sample, can effectively fix and position the sample and reduce the volatility in the grinding and polishing process.
In order to solve the problems, the technical scheme adopted by the utility model is as follows: a corrosion coupon sample holding device, comprising: the clamping disc is provided with a plurality of stepped through holes in the vertical direction, the stepped through holes are distributed in a circumferential array around the center of the clamping disc, and the lower ends of the stepped through holes are provided with positioning support surfaces; the gasket is detachably arranged in the stepped through hole; the locking screw is arranged on the side part of the clamping disc along the horizontal direction; when the sample is clamped, the first end face of the gasket is abutted to the positioning support face, the sample is installed in the stepped through hole, the first end face of the sample is abutted to the second end face of the gasket, the second end face of the sample protrudes out of the lower end face of the clamping disc, and the locking screw can be screwed into the stepped through hole to tightly press the sample against the inner wall of the stepped through hole.
Compared with the prior art, the utility model has the beneficial effects that:
1. when a sample needs to be clamped, the clamping disc is firstly inverted, the positioning support surface faces upwards, the gasket and the sample are sequentially placed in the stepped through hole, and the locking screw is screwed into the stepped through hole so as to tightly support the sample on the inner wall of the stepped through hole. When the sample needs to be taken down, the clamping disc is firstly inverted, then the locking screw is loosened, and the gasket and the sample are ejected upwards together from the stepped through hole, so that the sample can be taken down. Therefore, the clamping device is convenient and quick to operate when clamping and taking down the sample, and can improve the efficiency of the experiment;
2. the clamping device is characterized in that a gasket is arranged in a stepped through hole, the gasket and a locking screw are matched to act on a sample, the sample can be stably and fixedly positioned in the stepped through hole, the plurality of stepped through holes are distributed in a circumferential array mode around the center of a clamping disc, and in the grinding and polishing process, a plurality of samples respectively clamped in the plurality of stepped through holes can be subjected to uniform acting force and are not easy to fluctuate, so that the grinding and polishing quality is ensured, the consistency of the surface states of the plurality of samples subjected to grinding and polishing is also ensured, and the accuracy of experimental results is improved;
3. after the second end face of the sample is ground and polished, the sample can be inversely arranged in the stepped through hole, namely the second end face of the sample is abutted to the second end face of the gasket, so that the two end faces of the sample can be ground and polished, the gasket can effectively protect the ground and polished second end face of the sample so as to prevent the surface quality of the ground and polished second end face from being influenced, and the gasket can also play a role in protecting the sample when the sample is taken down.
Foretell corrosion coupon sample clamping device still includes the connector, the connector install in the upper end of grip block, the chuck of automatic machine of polishing is ground in connector detachably connection.
In the corrosion coupon sample clamping device, the shapes of the plurality of stepped through holes are the same.
In the corrosion coupon sample clamping device, the shapes of the plurality of stepped through holes are not completely the same.
According to the corrosion coupon sample clamping device, the stepped through hole comprises the first hole site and the second hole site which are communicated with each other from bottom to top, the cross section size of the first hole site is larger than that of the second hole site, and the positioning supporting surface is located on the bottom surface of the first hole site.
Foretell corruption hanging piece sample clamping device, first hole site is the rectangular hole, first fillet has all been seted up to four angle departments of first hole site.
Foretell corruption hanging piece sample clamping device, the second hole site is the rectangular hole, second fillet has all been seted up to four angle departments of second hole site.
According to the clamping device for the corrosion coupon sample, the fit clearance of the sample and the first hole site in the horizontal direction is not more than 0.2 mm.
According to the corrosion coupon sample clamping device, the thickness of the gasket is smaller than 1 mm.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is an exploded view of a clamping device according to an embodiment of the present invention;
FIG. 2 is a bottom view of a clamping disk (hidden spacer) according to an embodiment of the present invention;
FIG. 3 is a bottom view of a clamping device according to an embodiment of the utility model;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
fig. 5 is a cross-sectional view of a clamping device according to an embodiment of the utility model.
The reference numbers illustrate: 100 clamping discs, 110 stepped through holes, 120 positioning support surfaces, 130 first hole positions, 131 first fillets, 140 second hole positions, 141 second fillets, 150 mounting holes, 160 screw holes, 200 gaskets, 300 locking screws and 400 connectors.
Detailed Description
The embodiment of the present invention is described in detail below, and referring to fig. 1 to 5, the embodiment of the present invention provides a clamping device for a corrosion coupon sample, which includes a clamping disk 100, a gasket 200 and a locking screw 300, wherein the clamping disk 100 is provided with a plurality of stepped through holes 110 along a vertical direction, the plurality of stepped through holes 110 are distributed in a circumferential array around the center of the clamping disk 100, and the lower ends of the stepped through holes 110 are provided with positioning support surfaces 120; the gasket 200 is detachably mounted in the stepped through hole 110; the locking screw 300 is installed at a side portion of the clamping plate 100 in a horizontal direction, and the locking screw 300 may be screwed into the stepped through-hole 110 to tightly push the sample against an inner wall of the stepped through-hole 110. It should be noted that the "lower end of the stepped through hole 110" mentioned herein refers to the orientation of the stepped through hole 110 when the clamping device is placed, and can be understood by referring to the orientation in fig. 1 to 5.
When a sample needs to be clamped, the clamping disc 100 is firstly inverted, the positioning support surface 120 faces upwards, the gasket 200 and the sample are sequentially placed in the stepped through hole 110, the first end face of the gasket 200 is abutted to the positioning support surface 120, the first end face of the sample is abutted to the gasket 200, the locking screw 300 is screwed into the stepped through hole 110, the sample is tightly jacked on the inner wall of the stepped through hole 110, the clamping process of the sample is completed, and the whole clamping process is convenient and fast. After the sample is clamped, the clamping plate 100 is placed right side by side, and at this time, the positioning support surface 120 faces downward, and the second end surface of the spacer 200 protrudes from the lower end surface of the clamping plate 100. When grinding and polishing, the clamping disc 100 is installed on an automatic grinding and polishing machine, and then the sample can be ground and polished. In the grinding and polishing process, under the matching action of the gasket 200 and the locking screw 300, the samples can be stably fixed and positioned in the stepped through holes 110, the stepped through holes 110 are distributed in a circumferential array around the center of the clamping disc 100, and in the grinding and polishing process, the samples respectively clamped in the plurality of stepped through holes 110 can be subjected to uniform acting force and are not easy to fluctuate, so that the grinding and polishing quality is ensured, the consistency of the surface states of the plurality of samples to be ground and polished is also ensured, and the accuracy of an experimental result is improved.
Specifically, when a sample is polished, sometimes two end faces of the sample need to be polished, so that after the second end face of the sample is polished, the sample can be inversely installed in the stepped through hole 110, the second end face of the sample abuts against the first end face of the gasket 200, and the first end face of the sample protrudes out of the lower end face of the clamping disk 100, so as to polish the first end face of the sample, and the gasket 200 can effectively protect the polished second end face of the sample, so that the surface quality of the polished second end face is not affected. When the sample needs to be taken down, the clamping disc 100 only needs to be inverted again, the locking screw 300 is unscrewed, and the gasket 200 and the sample are ejected upwards together from the stepped through hole 110, so that the clamping and the taking down are both convenient and fast, and the experiment efficiency can be improved.
It should be understood that the lower end or the lower end surface of the holding tray 100 mentioned above is a description of the orientation of the holding tray 100 in the upright state. That is, when the second end surface of the sample is polished, in a state where the chuck plate 100 is placed, the first end surface (in this case, the upper end surface) of the spacer 200 abuts against the positioning support surface 120, the first end surface (in this case, the upper end surface) of the sample abuts against the second end surface (in this case, the lower end surface) of the spacer 200, and the second end surface (in this case, the lower end surface) of the sample protrudes from the lower end surface of the chuck plate 100. In the state where the chuck plate 100 is placed upside down, the lower end surface of the chuck plate 100 described above is actually changed to the upper end surface, and similarly, the first end surface of the spacer 200 is changed to the lower end surface, and the first end surface of the sample is also changed to the lower end surface.
Specifically, when a sample is clamped, the positioning support surface 120, the first end surface of the gasket 200, the second end surface of the gasket 200, the first end surface of the sample and the second end surface of the sample are all parallel to each other, so that the uniform stress of the sample in the grinding and polishing process can be ensured, and the fluctuation of the sample in the grinding and polishing process can be reduced.
Further, the clamping device further comprises a connector 400, the connector 400 is mounted at the upper end of the clamping disc 100, the connector 400 is detachably connected with a chuck of the automatic grinding and polishing machine, after the sample is loaded, the clamping disc 100 can be mounted on the chuck of the automatic grinding and polishing machine through the connector 400 to grind and polish the sample, and after the grinding and polishing are completed, the clamping disc 100 can be detached. Specifically, the upper end surface of the clamping plate 100 is further provided with a plurality of mounting holes 150, the plurality of mounting holes 150 are distributed along the circumferential direction of the connector 400 and are close to the connector 400, and when the clamping plate 100 is mounted, the mounting holes 150 can be connected with a rotary driving member of the automatic polishing machine.
Specifically, the plurality of stepped through holes 110 are arranged and distributed along the circumferential direction of the clamping disc 100, so that a plurality of samples can be loaded at one time, and can be ground and polished at one time, the experimental efficiency is further improved, and meanwhile, the consistency of the surface states of the plurality of samples can be ensured, and the accuracy of the experimental result is improved. As shown in fig. 1 to 3, the plurality of stepped through holes 110 may have the same shape so as to simultaneously hold a plurality of standard samples for polishing, and the plurality of stepped through holes 110 are rectangular holes according to the shape of the current standard sample. Of course, in some embodiments, the shapes of the plurality of stepped through holes 110 may not be identical to each other, so as to polish a non-standard sample, for example, the horizontal cross-sectional shapes of some of the stepped through holes 110 may be triangular, oval, circular, or the like.
Specifically, as shown in fig. 2 and 5, the stepped through hole 110 includes a first hole site 130 and a second hole site 140 from bottom to top, the cross sectional dimension of the first hole site 130 is larger than the cross sectional dimension of the second hole site 140, the positioning support surface 120 is located on the bottom surface of the first hole site 130 (in the state that the clamping plate 100 is placed right, the opening of the first hole site 130 faces downward, the bottom surface of the first hole site 130 is located above the opening of the first hole site 130), the first hole site 130 can facilitate installation of the gasket 200 and the sample, and when the sample needs to be taken down, the pushing member or a finger can be directly inserted through the second hole site 140 to push the gasket 200 and the sample out of the opening of the first hole site 130.
Specifically, as shown in fig. 2 to 4, the first hole site 130 is a rectangular hole, and the first fillets 131 are respectively disposed at four corners of the first hole site 130, as shown in fig. 4, the sharp corners of the gasket 200 are located in the first fillets 131, and similarly, when the sample is clamped, the sharp corners of the sample can be disposed at the first fillets 131, so that the sharp corners of the sample can be prevented from being damaged in the polishing process. Specifically, the second hole site 140 is a rectangular hole, and the four corners of the second hole site 140 are all provided with second fillets 141, so that the first hole site 130 and the second hole site 140 can be conveniently processed together, and the sample can be conveniently pushed and taken down. Of course, the second hole 140 may be a shaped hole with other shapes.
Specifically, the fit clearance of sample and first hole site 130 in the horizontal direction is not more than 0.2mm to make the sample can be from putting into first hole site 130 or taking off from first hole site 130 in, and the fit clearance is less, when adopting locking screw 300 top tight sample, locking screw 300's afterbody also need not screw in first hole site 130 too deeply, so that locking screw 300's afterbody forms the cantilever beam, thereby influences fixed effect. Specifically, as shown in fig. 4, the clamping plate 100 is provided with two screw holes 160 at each stepped through hole 110, and for each sample, two locking screws 300 are used for tightening, so as to improve the fixing effect. Specifically, the thickness of the spacer 200 is less than 1mm, which not only has a certain supporting function, but also does not occupy too much space, and is beneficial to the compactness of the clamping device.
It should be noted that in the description of the present invention, if the orientation description is referred to, for example, the orientation or position relationship indicated by upper, lower, front, rear, left, right, etc., all are based on the orientation or position relationship shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. The description to first or second etc. is for the purpose of distinguishing between technical features and is not to be construed as indicating or implying a relative importance or implying a number of indicated technical features or implying a precedence relationship between indicated technical features.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (9)
1. The utility model provides a corrosion coupon sample clamping device which characterized in that includes:
the clamping disc is provided with a plurality of stepped through holes in the vertical direction, the stepped through holes are distributed in a circumferential array around the center of the clamping disc, and the lower ends of the stepped through holes are provided with positioning support surfaces;
the gasket is detachably arranged in the stepped through hole;
the locking screw is arranged on the side part of the clamping disc along the horizontal direction;
when the sample is clamped, the first end face of the gasket is abutted to the positioning support face, the sample is installed in the stepped through hole, the first end face of the sample is abutted to the second end face of the gasket, the second end face of the sample protrudes out of the lower end face of the clamping disc, and the locking screw can be screwed in the stepped through hole to tightly push the sample against the inner wall of the stepped through hole.
2. The corrosion coupon sample holding device of claim 1, further comprising a connector, wherein the connector is mounted at the upper end of the holding plate, and the connector is detachably connected with a chuck of an automatic polishing machine.
3. The corrosion coupon sample holder of claim 1, wherein the plurality of stepped through holes are all the same shape.
4. The corrosion coupon holding apparatus of claim 1, wherein the plurality of stepped through holes are not identical in shape.
5. The corrosion coupon sample holding device of claim 1, wherein the stepped through hole comprises a first hole site and a second hole site which are communicated with each other from bottom to top, the cross section size of the first hole site is larger than that of the second hole site, and the positioning support surface is located on the bottom surface of the first hole site.
6. The corrosion coupon sample holding device of claim 5, wherein the first hole site is a rectangular hole, and four corners of the first hole site are provided with first rounded corners.
7. The corrosion coupon sample clamping device of claim 5, wherein the second hole site is a rectangular hole, and second fillets are formed at four corners of the second hole site.
8. The corrosion coupon sample holding device of claim 5, wherein a fit clearance of the sample and the first hole site in a horizontal direction is not more than 0.2 mm.
9. The corrosion coupon holding device of claim 1, wherein the shim has a thickness of less than 1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123090188.8U CN217006902U (en) | 2021-12-09 | 2021-12-09 | Corrosion coupon sample clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123090188.8U CN217006902U (en) | 2021-12-09 | 2021-12-09 | Corrosion coupon sample clamping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217006902U true CN217006902U (en) | 2022-07-19 |
Family
ID=82383144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123090188.8U Expired - Fee Related CN217006902U (en) | 2021-12-09 | 2021-12-09 | Corrosion coupon sample clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217006902U (en) |
-
2021
- 2021-12-09 CN CN202123090188.8U patent/CN217006902U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220719 |