CN218801420U - Grinding and polishing clamp, grinding and polishing equipment, hardness testing clamp and hardness testing equipment - Google Patents
Grinding and polishing clamp, grinding and polishing equipment, hardness testing clamp and hardness testing equipment Download PDFInfo
- Publication number
- CN218801420U CN218801420U CN202320163705.XU CN202320163705U CN218801420U CN 218801420 U CN218801420 U CN 218801420U CN 202320163705 U CN202320163705 U CN 202320163705U CN 218801420 U CN218801420 U CN 218801420U
- Authority
- CN
- China
- Prior art keywords
- fastening
- polishing
- polygonal
- hardness
- fixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The present disclosure relates to a grinding and polishing clamp for polygonal samples, the polygonal samples have two parallel sides, and the grinding and polishing clamp comprises: a grip disk for setting a polygonal sample, the grip disk having a plurality of rectangular openings arranged inside the grip disk along an outer periphery thereof and penetrating both end surfaces of the grip disk; a plurality of fastening assemblies corresponding one by one to the plurality of rectangular openings, each fastening assembly having a fastening hole disposed on an outer periphery of the clamping plate and communicating with the corresponding rectangular opening, and a fastening screw which can be screwed into the fastening hole and protrude into the corresponding rectangular opening. The disclosure also relates to a polishing device, a hardness test fixture for polygonal samples and a hardness test device.
Description
Technical Field
The present disclosure relates to sample preparation and testing of vehicle engine crankshafts, and more particularly, to a polishing jig for polygonal samples, a hardness testing jig for polygonal samples, and corresponding polishing and hardness testing apparatus.
Background
The engine crankshaft is a key part of vehicles and is made of forged steel and ductile iron, for example. For example, according to automotive industry standards, mechanical industry standards, and the like, a material for a crankshaft of a vehicle engine needs to meet certain requirements. Therefore, testing of vehicle engine crankshaft materials is required.
In the process of testing the material performance and the metallographic structure of the engine crankshaft, in order to ensure the accuracy of a test result, samples are generally selected from a plurality of points on the engine crankshaft. In addition, before testing, the selected sample needs to be polished first and then can be tested.
Therefore, in conventional crankshaft sample preparation and testing, a sample to be tested is first cut from a plurality of points on the crankshaft of the engine, and then the cut samples are inserted one by one. And after the sample is embedded, the sample is sequentially polished, and the sample is tested after polishing, particularly a metallographic test and a hardness test. Therefore, the whole preparation and test process is complicated, and the test efficiency is greatly reduced. Moreover, because the single sample is polished, the consistency of polishing effects of different samples in the same batch cannot be ensured, thereby affecting the test effect.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks of the prior art, an object of the present disclosure is to provide a polishing jig for polygonal samples and a hardness testing jig for polygonal samples, by which the preparation and testing processes of the samples can be simplified, thereby improving the testing efficiency. In addition, the test effect can be improved by using the test device.
In a first aspect, there is provided according to the present disclosure a polishing jig for polygonal test specimens having two parallel sides, characterized by comprising: a grip disk for setting a polygonal sample, the grip disk having a plurality of rectangular openings arranged inside the grip disk along an outer periphery thereof and penetrating both end surfaces of the grip disk; a plurality of fastening members corresponding one by one to the plurality of rectangular openings, each fastening member having a fastening hole arranged on an outer periphery of the clamping plate and communicating with the corresponding rectangular opening and a fastening screw capable of being screwed into the fastening hole and protruding into the corresponding rectangular opening.
Therefore, the cut polygonal sample can be directly mounted on the grinding and polishing clamp according to the disclosure, so that a sample embedding step in the traditional sample preparation method can be omitted, the test cost can be reduced, the sample preparation time can be greatly shortened, and the test efficiency is improved. Moreover, since a plurality of samples can be simultaneously arranged in the polishing clamp according to the present disclosure, a plurality of samples can be simultaneously polished, so that each sample can be uniformly stressed. Therefore, the consistency of the polishing effect of the samples in the same batch can be ensured, and the test effect is improved.
Preferably, the grinding and polishing clamp further comprises an engagement assembly engageable with the grinding and polishing equipment, the engagement assembly being disposed at the center of the clamping plate and comprising a support base fixedly connected with the clamping plate and an engagement rod disposed at the center of the support base. The polishing jig can thus be coupled to the polishing apparatus using the coupling assembly, thereby eliminating the need for additional adapter couplings.
Preferably, the clamping disk is circular, and the plurality of rectangular openings are uniformly arranged on the inner side of the clamping disk along the outer circumference of the clamping disk. Thereby facilitating the polishing operation and facilitating the processing.
Preferably, the clamping disk has at least six rectangular openings. Therefore, at least eight samples can be simultaneously ground and polished, and the grinding and polishing efficiency is improved.
Preferably, each fastening assembly has at least two fastening holes and a respective fastening screw. This enables the sample to be fastened to the polishing jig more reliably without loosening.
Preferably, the fastening screw has a head and a shank, the head having a flat outer surface. This enables the sample to be fastened to the polishing jig more reliably without loosening. In this regard, the shank preferably has an internal cavity with a hexagonal cross-section. Thereby facilitating handling of the tightening screw.
Correspondingly, according to the present disclosure, a polishing and burnishing apparatus is provided having a polishing and burnishing platform, characterized in that it has a polishing and burnishing fixture as described above which can be disposed on the polishing and burnishing platform at a distance therefrom. The polishing equipment according to the present disclosure has the same advantages as the polishing jig according to the present disclosure, and is not described in detail herein.
In a second aspect, there is provided according to the present disclosure a hardness testing fixture for a polygonal test specimen having two parallel sides, characterized in that the hardness testing fixture comprises: a grip disk for setting a polygonal sample, the grip disk having a plurality of rectangular openings arranged inside the grip disk along an outer periphery thereof and penetrating both end surfaces of the grip disk; a plurality of fastening members corresponding one by one to the plurality of rectangular openings, each fastening member having a fastening hole arranged on an outer periphery of the clamping plate and communicating with the corresponding rectangular opening and a fastening screw capable of being screwed into the fastening hole and protruding into the corresponding rectangular opening.
Therefore, since the cut polygonal sample can be directly mounted on the hardness test fixture according to the present disclosure, a sample-mounting step in the conventional sample preparation method can be omitted, so that not only can the test cost be reduced, but also the time for sample preparation can be greatly shortened, thereby improving the test efficiency. Also, since a plurality of test pieces can be simultaneously installed in the hardness test jig according to the present disclosure, the hardness test can be simultaneously performed on the plurality of test pieces, so that the test efficiency can be further improved.
Preferably, the hardness test fixture further comprises an engagement assembly engageable with a hardness test apparatus, the engagement assembly being disposed in the center of the clamping plate and comprising a support base fixedly connected with the clamping plate and an engagement table, the support base being disposed in the center of the engagement table. Thereby, the hardness testing fixture can be engaged to the hardness testing device with the engagement assembly, so that no additional adapter engagement is required.
Preferably, the clamping disk is rectangular. Thereby facilitating manufacture and saving material.
Preferably, the clamping disk has at least six rectangular openings. Therefore, the hardness test can be simultaneously carried out on at least eight samples, and the hardness test efficiency is improved.
Preferably, each fastening assembly has at least two fastening holes and a respective fastening screw. This enables the test specimen to be more reliably fastened to the hardness test fixture without loosening.
Preferably, the fastening screw has a shank, the end of the shank facing the polygonal test piece having a flat outer surface. This enables the test specimen to be more reliably fastened to the hardness test fixture without loosening. In this connection, the shaft preferably has an internal cavity with a hexagonal cross section. Thereby facilitating handling of the fastening screw.
Accordingly, there is provided according to the present disclosure a hardness testing apparatus having a hardness testing platform, characterized in that the hardness testing apparatus has a hardness testing jig as described above, which can be disposed on the hardness testing platform. The hardness testing apparatus according to the present disclosure has the same advantages as the hardness testing jig according to the present disclosure, and thus, no further description is given herein.
Drawings
In order to make the aforementioned objects, features and advantages of the present disclosure more comprehensible, embodiments accompanying the present disclosure are described in detail below. In the drawings, wherein like reference numerals refer to like parts throughout:
FIG. 1A shows a perspective view of a burnishing fixture for polygonal specimens in accordance with the present disclosure;
FIG. 1B shows a front view of the burnishing fixture for polygonal specimens of FIG. 1A;
FIG. 1C shows a side view of the burnishing fixture for polygonal specimens of FIG. 1A;
FIG. 2A shows a perspective view of a hardness test fixture for polygonal specimens according to the present disclosure;
FIG. 2B shows a front view of the hardness test fixture for polygonal specimens of FIG. 2A;
FIG. 2C shows a side view of the hardness test fixture of FIG. 2A for a polygonal shaped test specimen;
FIG. 3A shows an exemplary schematic of a cut crankshaft sample;
FIG. 3B illustrates an exemplary schematic of a crankshaft sample after insertion;
FIG. 4A illustrates a perspective view of an embodiment of a set screw for the polishing fixture of FIG. 1A;
FIG. 4B illustrates a perspective view of an embodiment of a set screw for the hardness test fixture of FIG. 2A.
Detailed Description
As shown in fig. 1A to 1C, a polishing jig for polygonal samples according to the present disclosure may include a clamping plate 100 for seating the polygonal samples. The clamping disk 100 can be designed in particular as a circular clamping disk, in order to facilitate a uniform polishing effect.
The clamping disk 100 may have a plurality of rectangular openings 110. In this embodiment, the clamping disk 100 has eight rectangular openings. It is understood that any number of rectangular openings, in particular at least six rectangular openings, may be designed according to size requirements and design requirements.
The plurality of rectangular openings 110 may be arranged inside the clamping disk 100 along the outer circumference of the clamping disk 100 and through both end faces 101, 102 of the clamping disk 100. In the case of a circular chucking plate, the plurality of rectangular openings 110 may be uniformly arranged at the inner side of the chucking plate 100 along the outer circumference of the chucking plate 100.
In each rectangular opening 110, a polygonal shaped test piece can be positioned, the polygonal shaped test piece having two substantially parallel sides. Each rectangular opening 110 may be sized to accommodate a polygonal shaped sample therein. In particular, the rectangular area of each rectangular opening 110 may be slightly larger, e.g., 10% to 20% larger, than the polygonal area of the polygonal specimen. When the polygonal sample is positioned, one of the parallel sides of the polygonal sample may abut against the rectangular side of the rectangular opening 110 near the center of the rectangular opening.
In the preparation and testing of crankshaft specimens, crankshaft specimens that are typically cut from multiple points on the crankshaft (as shown in FIG. 3A) are generally rectangular, i.e., the rectangular crankshaft specimens may constitute polygonal specimens. Thus, the rectangular crankshaft specimen may be placed directly in the rectangular opening 110 of the burnishing fixture according to the present disclosure. Since the sample groove for placing the sample is circular in the conventional polishing jig, the cut rectangular crankshaft samples are inserted one by one to be circular (as shown in fig. 3B), and then placed in the conventional polishing jig. Thus, with the burnishing fixture according to the present disclosure, a cut rectangular crankshaft specimen can be placed directly in the rectangular opening as a specimen slot. Therefore, the sample embedding step in the traditional sample preparation method can be omitted, so that the test cost can be reduced, the sample preparation time can be greatly shortened, and the test efficiency is improved.
In addition, since a plurality of rectangular openings as sample grooves are provided, a plurality of samples can be simultaneously placed in the polishing jig according to the present disclosure and thus a plurality of samples can be simultaneously polished, so that each sample can be uniformly applied with force. Therefore, the consistency of the polishing effect of the samples in the same batch can be ensured, and the test effect is improved.
The polishing jig according to the present disclosure may further include a plurality of fastening assemblies 200 corresponding one by one to the plurality of rectangular openings 110.
Each fastening assembly 200 may include a fastening hole 210 and a fastening screw 220. The fastening holes 210 may be disposed on the outer circumference of the clamping disk 100 and communicate with the corresponding rectangular openings 110. The fastening screws 220 can be screwed into the fastening holes 210 and protrude into the corresponding rectangular openings. In this embodiment, each fastening assembly 200 has two fastening holes 210 and a corresponding fastening screw 220. It is to be understood that any number of fastening holes and corresponding fastening screws, in particular at least two fastening holes and corresponding fastening screws, can be designed according to the dimensional requirements and design requirements.
In addition, as shown in fig. 4A, in this embodiment, the fastening screw 220 may have a head 221 and a shaft 222. The head 221 may have a flat outer surface (as shown in fig. 1B) as a fastening surface for fastening a specimen. The shank 222 may have an internal cavity 223 which may be hexagonal in cross-section to facilitate tightening of the fastening screw using an internal hex.
After the polygonal sample is placed into the rectangular opening 110, the polygonal sample may be pressed using the fastening screw 220 against the other parallel side of the polygonal sample opposite to the parallel side abutting against the rectangular side of the rectangular opening 110 near the center of the rectangular opening, whereby the polygonal sample may be fastened to the polishing jig without loosening. Thus, the fastening assembly 200 also functions as a positioning feature. In addition, in order to more reliably fasten the polygonal test piece to the polishing jig, the opening inner surface of the rectangular opening may have a large roughness so as to more reliably clamp the test piece.
Optionally, a polishing jig according to the present disclosure may further include an engagement assembly 300 engageable with the polishing apparatus.
The engagement assembly 300 may be disposed at the center of the clamping disk 100. The engagement assembly 300 may include a support base 310 and an engagement bar 320. The support base 310 may be fixedly connected with the clamping disk 100. An engagement bar 320 may be disposed in the center of the support base 310 and may be capable of engaging with a corresponding engagement member of the polishing apparatus. With the coupling assembly 300, the polishing jig can be disposed on the polishing platform of the polishing apparatus at a spaced distance therefrom.
When using the polishing jig according to the present disclosure in a polishing apparatus, first, the polishing jig may be disposed on a polishing platform of the polishing apparatus at a distance from the polishing platform, for example, using the joint assembly 300. Each polygonal sample can then be placed into the rectangular opening 110 and supported on the polishing platform, thereby ensuring that the faces of each sample that need to be polished are in the same plane. Next, by tightening the fastening screw 220 of the fastening assembly 200, the polygonal test piece can be reliably fastened to the polishing jig, thereby completing the polishing preparation process.
As shown in fig. 2A to 2C, the hardness test fixture for polygonal samples according to the present disclosure may include a clamping disk 100' for seating the polygonal samples. The clamping disk 100' can be designed in particular as a rectangular clamping disk.
The clamping disk 100 'may have a plurality of rectangular openings 110'. In this embodiment, the clamping disk 100' has eight rectangular openings. It is understood that any number of rectangular openings, in particular at least six rectangular openings, may be designed according to size requirements and design requirements.
The plurality of rectangular openings 110 'may be arranged along the outer circumference of the clamping disk 100' inside the clamping disk 100 'and through both end surfaces 101', 102 'of the clamping disk 100'.
Similarly, a polygonal shaped test piece having two substantially parallel sides can be positioned in each rectangular opening 110'. Each rectangular opening 110' may be sized to accommodate a polygonal sample therein. In particular, the rectangular area of each rectangular opening 110' may be slightly larger, e.g., 10% to 20% larger, than the polygonal area of the polygonal specimen. When the polygonal sample is positioned, one of the parallel sides of the polygonal sample may abut against the rectangular side of the rectangular opening 110' near the center of the rectangular opening.
In the hardness test of the crankshaft sample, a substantially rectangular crankshaft sample (as shown in fig. 3A) may be directly seated in the rectangular opening 110' of the hardness test jig according to the present disclosure without having to insert the cut rectangular crankshaft samples one by one to make them circular. Therefore, the sample embedding step in the traditional sample preparation method can be omitted, so that the test cost can be reduced, the sample preparation time can be greatly shortened, and the test efficiency is improved.
Further, since a plurality of rectangular openings as sample grooves are provided, a plurality of samples can be simultaneously set in the hardness test jig according to the present disclosure and thus a hardness test can be simultaneously performed on a plurality of samples. Therefore, the test efficiency can be further improved.
The hardness test fixture according to the present disclosure may further include a plurality of fastening assemblies 200 'corresponding one by one to the plurality of rectangular openings 110'.
Each fastening assembly 200' may include a fastening hole 210' and a fastening screw 220'. Fastening holes 210' may be disposed on the outer circumference of the clamping plate 100' and communicate with the corresponding rectangular openings 110'. A fastening screw 220 'can be screwed into the fastening hole 210' and into the corresponding rectangular opening. In this embodiment, each fastening assembly 200' has two fastening holes 210' and corresponding fastening screws 220'. It is to be understood, however, that any number of fastening holes and corresponding fastening screws, in particular at least two fastening holes and corresponding fastening screws, can be provided, depending on the size requirements and the design requirements.
Additionally, as shown in FIG. 4B, in this embodiment, the set screw 220 'may have a shank 222'. The end of the stem 222' facing the specimen may have a flat outer surface (as shown in fig. 2B) as a fastening surface for fastening the specimen. The shank 222 'may have an internal cavity 223' which may be hexagonal in cross-section to facilitate tightening of the fastening screw using an internal hex.
Also, after the polygonal test piece is placed into the rectangular opening 110', another parallel side of the polygonal test piece opposite to the parallel side abutting against the rectangular side of the rectangular opening 110' near the center of the rectangular opening may be pressed using the fastening screw 220', whereby the polygonal test piece may be fastened to the polishing jig without being loosened. Thus, the fastening assembly 200' also functions as a positioning feature. In addition, in order to more reliably fasten the polygonal test piece to the polishing jig, the opening inner surface of the rectangular opening may have a large roughness so as to more reliably clamp the test piece.
Optionally, a hardness test fixture according to the present disclosure may further include an engagement assembly 300' engageable with the polishing apparatus.
The engagement assembly 300 'may be disposed at the center of the clamping disk 100'. The engagement assembly 300 'may include a support base 310' and an engagement station 330. The support base 310 'may be fixedly connected with the clamping disk 100'. The support base 310' may be disposed at the center of the engagement table 330. The engagement stage 330 may engage with a corresponding engagement member of the hardness testing apparatus. Thus, with the joint assembly 300', a hardness testing fixture according to the present disclosure may be provided on a hardness testing apparatus.
When using the hardness testing jig according to the present disclosure in a hardness testing apparatus, first, the hardness testing jig may be set on a hardness testing platform of the hardness testing apparatus, for example, using the engaging assembly 300'. Each polygonal test specimen can then be placed into the rectangular opening 110' and supported on the hardness testing platform, thereby ensuring that the faces of the test specimens that rest against the hardness testing platform are in the same plane. Next, by tightening the fastening screw 220 'of the fastening assembly 200', the polygonal test piece can be reliably fastened to the hardness test jig, thereby completing the hardness test preparation process.
Although the present disclosure has been described by way of example and with reference to particular embodiments, it is to be understood that modifications and/or improvements may be made without departing from the scope of the claims of the present disclosure. Where integers or devices referred to in the above description have known equivalents, such equivalents are also incorporated herein.
Claims (16)
1. A lapping fixture for a polygonal test piece having two parallel sides, the lapping fixture comprising:
a grip disk for setting a polygonal sample, the grip disk having a plurality of rectangular openings arranged inside the grip disk along an outer periphery thereof and penetrating both end surfaces of the grip disk;
a plurality of fastening members corresponding one by one to the plurality of rectangular openings, each fastening member having a fastening hole arranged on an outer periphery of the clamping plate and communicating with the corresponding rectangular opening and a fastening screw capable of being screwed into the fastening hole and protruding into the corresponding rectangular opening.
2. A polishing jig according to claim 1, further comprising an engagement assembly engageable with polishing equipment, the engagement assembly being disposed at the center of the holding plate and including a support base fixedly connected with the holding plate and an engagement rod disposed at the center of the support base.
3. A polishing jig according to claim 1, wherein the holding plate is circular, and the plurality of rectangular openings are arranged uniformly inside the holding plate along the outer periphery of the holding plate.
4. A polishing jig according to claim 1 wherein the holding pan has at least six rectangular openings.
5. A polishing jig according to claim 1 wherein each fastening assembly has at least two fastening holes and respective fastening screws.
6. A polishing jig according to claim 1 in which the fastening screw has a head and a shank, the head having a flat outer surface.
7. A polishing jig according to claim 6, wherein the shank has an internal cavity of hexagonal cross-section.
8. A polishing apparatus having a polishing platform, characterized in that the polishing apparatus has a polishing jig as claimed in any one of claims 1 to 7, which can be arranged on the polishing platform at a distance from the polishing platform.
9. A hardness testing fixture for a polygonal test specimen having two parallel sides, comprising:
a grip disk for setting a polygonal sample, the grip disk having a plurality of rectangular openings arranged inside the grip disk along an outer periphery thereof and penetrating both end surfaces of the grip disk;
a plurality of fastening members corresponding one by one to the plurality of rectangular openings, each fastening member having a fastening hole arranged on an outer periphery of the clamping plate and communicating with the corresponding rectangular opening and a fastening screw capable of being screwed into the fastening hole and protruding into the corresponding rectangular opening.
10. The hardness test fixture of claim 9, further comprising an engagement assembly engageable with a hardness test apparatus, the engagement assembly being disposed in the center of the clamping plate and including a support base and an engagement platform, the support base being fixedly connected to the clamping plate, the support base being disposed in the center of the engagement platform.
11. The hardness test fixture of claim 9, wherein said clamping disk is rectangular.
12. The hardness test fixture of claim 9, wherein said clamping disk has at least six rectangular openings.
13. The hardness test fixture of claim 9, wherein each fastening assembly has at least two fastening holes and a corresponding fastening screw.
14. The hardness test fixture of claim 9, wherein said fastening screw has a shank, an end of said shank facing said polygonal test piece having a flat outer surface.
15. The hardness testing fixture of claim 14, wherein said shank portion has an internal cavity with a hexagonal cross-section.
16. A hardness testing apparatus having a hardness testing platform, characterized in that the hardness testing apparatus has a hardness testing fixture according to any one of claims 9 to 15, which can be arranged on the hardness testing platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320163705.XU CN218801420U (en) | 2023-02-09 | 2023-02-09 | Grinding and polishing clamp, grinding and polishing equipment, hardness testing clamp and hardness testing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320163705.XU CN218801420U (en) | 2023-02-09 | 2023-02-09 | Grinding and polishing clamp, grinding and polishing equipment, hardness testing clamp and hardness testing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218801420U true CN218801420U (en) | 2023-04-07 |
Family
ID=87264168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320163705.XU Active CN218801420U (en) | 2023-02-09 | 2023-02-09 | Grinding and polishing clamp, grinding and polishing equipment, hardness testing clamp and hardness testing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218801420U (en) |
-
2023
- 2023-02-09 CN CN202320163705.XU patent/CN218801420U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6170814B1 (en) | Method for attaching a jaw to a vise-like workholding apparatus | |
| CN111122328B (en) | Universal clamp for compression creep aging and stress relaxation aging experiments of round bar-shaped sample | |
| CN218801420U (en) | Grinding and polishing clamp, grinding and polishing equipment, hardness testing clamp and hardness testing equipment | |
| CN203894107U (en) | Clamp applied to test piece sample in microcosmic performance in-situ test of functional material | |
| CN112222884A (en) | Clamping device and clamping method for cantilever type thin-wall casing part | |
| CN217638358U (en) | Double-end stud screwing performance testing tool | |
| CN210499295U (en) | Slender shaft machining tool based on CNC four shafts | |
| CN112798409A (en) | Special clamp for XXXX high-end aluminum alloy tensile sample and use method | |
| CN112517946A (en) | Clamp and lathe | |
| CN114323379B (en) | Thrust testing jig and chip loading thrust testing method | |
| CN211163028U (en) | Highlight mounting fixture | |
| CN215919709U (en) | Magnetic table matching clamp for electric pulse machine tool | |
| US6883225B2 (en) | Method of using a universal manifold holding fixture | |
| CN217443213U (en) | Sample clamp for compression test analysis of in-situ tension table of scanning electron microscope | |
| US20210265128A1 (en) | Specimen mounts and related methods | |
| CN217637746U (en) | Dynamometer connecting plate | |
| TWI834258B (en) | Embedded fixing screws | |
| CN220625085U (en) | Hole alignment gauge | |
| CN215616064U (en) | Welding system and tool platform device | |
| CN215747917U (en) | Clamp for rapid key groove milling of numerical control machining center | |
| CN110220774B (en) | Test fixture capable of realizing loading at any point in plane | |
| CN219265899U (en) | Clamping device for bolt real object tensile test | |
| CN218411966U (en) | Clamp tool for stretching L-shaped eccentric test piece on universal testing machine | |
| CN210819335U (en) | Tool for disassembling shoulder fixing bush | |
| CN213456396U (en) | End surface friction and wear test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |