Sample preparation apparatus and punch assembly therefor and hot chamber small punch test system

Abstract

Embodiments of the present application relate to testing the strength characteristics of solid materials with mechanical stress, in particular to a sample preparation device and a punch assembly thereof, and a hot chamber small punch test system. The punch assembly comprises a punch body, a punch piece, a driving piece, a clamp guide, a sample support and a punch matching piece; the clamp guide is arranged to guide the clamp to move to a position where the sheet sample can be punched; the sample support is arranged to provide support for the sheet sample held by the clamp; the driving piece is arranged to drive the punch piece and the punch matching piece to ascend and descend in the punch body; the punch piece is arranged to punch the sheet sample into a round sample; the punch matching piece is arranged to be in contact with the sheet sample before the punch piece, and cooperates with the sample support to jointly maintain the stability of the sheet sample, and avoid the deformation of the round sample formed by punching. The punch assembly provided by the embodiments of the present application can avoid the deformation of the round sample caused by the punch piece during the punching process of the sheet sample.

Description

Technical Field

[0001] Embodiments of this application relate to testing the strength properties of solid materials using mechanical stress, and particularly to a sample preparation apparatus and its stamping assembly, as well as a hot chamber small punch test system. Background Technology

[0002] This section is only intended to provide background information relevant to this application and does not necessarily constitute prior art.

[0003] Initial defects or microcracks in materials are highly susceptible to crack propagation under high pressure, severely impacting equipment safety. The small punch test, as a micro-sample testing method, can provide relatively accurate material properties. The small punch test requires extremely small sample sizes; the standard sample is a thin disc with a diameter of 5 mm and a thickness of 0.5 mm. Due to limitations in irradiation space, there is a current trend towards miniaturization in small punch test samples, typically using a thin disc with a diameter of 3 mm and a thickness of 0.1 mm.

[0004] Currently, it is quite difficult to conduct small punch tests on radioactive samples. Summary of the Invention

[0005] A brief overview of this application is provided below to offer a basic understanding of certain aspects thereof. It should be understood that this overview is not an exhaustive summary of the application. It is not intended to identify key or essential parts of the application, nor is it intended to limit its scope. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0006] In a first aspect, embodiments of this application provide a stamping assembly suitable for a small punch test sample preparation device, comprising: a stamping body, a stamping component, a driving component, a fixture guide, a sample support, and a stamping mating component; the fixture guide is configured to guide a fixture for holding a sheet-like sample, so that the fixture can move under the guidance of the fixture guide to a position where the sheet-like sample can be stamped by the stamping component; the sample support is configured to provide support for the sheet-like sample held by the fixture; the stamping component and the stamping mating component are disposed in the stamping body, and the driving component is configured to drive the stamping component and the stamping mating component to move up and down within the stamping body; the stamping component is configured to stamp the sheet-like sample into a circular sheet sample; the stamping mating component is configured to contact the sheet-like sample before the stamping component when the stamping component stamps the sheet-like sample, thereby cooperating with the sample support to jointly maintain the stability of the sheet-like sample and prevent deformation of the circular sheet sample formed by stamping.

[0007] The stamping assembly provided in the embodiments of this application, by setting a clamp guide, allows a robotic arm to push the clamp to a position where the sheet sample can be stamped by the stamping part under the guidance of the clamp guide. To ensure that the sheet sample held by the clamp does not deform during movement, there is a small gap between the surface of the sheet sample and the sample support. If the sheet sample is directly stamped by the stamping part, the resulting circular sample will deform because the sheet sample is not stably supported. The embodiments of this application, by setting a stamping fitting, allow the sheet sample to contact the stamping part before the stamping part, thus allowing the sheet sample to adhere tightly to the sample support under the action of the stamping fitting. The stamping fitting and the sample support simultaneously provide stable support for the sheet sample on its upper and lower surfaces, making the resulting circular sample less prone to deformation when the stamping part stamps the sheet sample.

[0008] Secondly, embodiments of this application provide a sample preparation apparatus suitable for a hot chamber small punch test system, comprising: a sample loading assembly, a fixture, a polishing assembly, a load loading assembly, and a stamping assembly provided in the first aspect of this application. The fixture is configured to hold a sheet-like sample to be processed; the sample loading assembly is configured to load the sheet-like sample into the fixture; the polishing assembly is configured to polish the surface of the sheet-like sample; the load loading assembly is configured to provide a polishing load to the sheet-like sample when the polishing assembly polishes the surface of the sheet-like sample; and the stamping assembly is configured to stamp the polished sheet-like sample to obtain a circular sample. The fixture and the load loading assembly are configured to cooperate so that the sheet-like sample can enter between the grinding disc of the load loading assembly and the polishing assembly, and that the sheet-like sample can be polished by the grinding disc under the polishing load.

[0009] The embodiments of this application, by setting up a sample loading assembly, a fixture, a polishing assembly, a load loading assembly, and a stamping assembly, enable the sample loading assembly to load sheet-like samples into the fixture, and the fixture, in cooperation with the load loading assembly, allows the sheet-like samples to enter between the grinding discs of the load loading assembly and the polishing assembly, and enables the sheet-like samples to be polished by the polishing assembly under the polishing load. After that, the polished sheet-like samples are stamped by the stamping assembly to obtain round sheet samples. Thus, round sheet samples can be produced in a hot chamber by operating the sample loading assembly, fixture, polishing assembly, load loading assembly, and stamping assembly with a robotic arm.

[0010] Thirdly, embodiments of this application provide a hot chamber punch testing system, comprising: a sample preparation apparatus as provided in the second aspect of this application, a first clamp and a second clamp, a loading device, a clamp tightening device, and a testing device. The sample preparation apparatus is used to prepare a circular sample; the first clamp and the second clamp cooperate to hold the circular sample and the punch; the loading device is used to place the circular sample and the punch into the second clamp; the clamp tightening device is used to tighten the first clamp and the second clamp after the circular sample and the punch are placed into the second clamp using the loading device; the testing device is used to apply a force to the punch in the first clamp and the second clamp, and to measure the deformation of the circular sample under the applied force.

[0011] These and other advantages of this application will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0012] To further illustrate the above and other advantages and features of this application, the specific embodiments of this application will be described in more detail below with reference to the accompanying drawings. The drawings, together with the following detailed description, are included in and form a part of this specification. Elements having the same function and structure are indicated by the same reference numerals. It should be understood that these drawings only depict typical examples of this application and should not be considered as limiting the scope of this application.

[0013] Figure 1 This is a partial structural schematic diagram of a small punch test system according to an embodiment of this application, where the test device is not shown. Figure 2 This is a schematic diagram of the structure of the testing device according to an embodiment of this application after being assembled in a tensile testing machine; Figure 3 This is a schematic diagram of the structure after the punch and the disc sample are assembled in the fixture assembly according to an embodiment of this application; Figure 4 yes Figure 1 Top view of the small punch test system shown; Figure 5 yes Figure 1 A partial schematic diagram of the clamping method of the small punch test system shown in the figure, where the clamping components are not shown; Figure 6 It is to assemble and arrange the fixtures in Figure 5 The diagram shows the structure of the clamp tightening device. Figure 7 yes Figure 1 A schematic diagram of the sample receiving and distributing section of the small punch test system shown. Figure 8 yes Figure 1 A partial schematic diagram of the sample receiving and distributing section of the small punch test system shown. Figure 9 yes Figure 1 The diagram shows the structure of the loading section of the small punch test system. Figure 10 yes Figure 3 An exploded view of the punch and disc sample and the fixture assembly shown. Figure 11 yes Figure 1 A schematic diagram of the punch receiving and distribution section of the small punch test system shown; Figure 12 yes Figure 11 A cross-sectional schematic diagram of the punch receiving and distribution section shown. Figure 13 yes Figure 2 A partial structural diagram of the testing device; Figure 14 yes Figure 13 A schematic diagram of the structure of the testing device from another angle; Figure 15 This is a schematic diagram of the structure of a sample preparation apparatus according to an embodiment of this application; Figure 16 yes Figure 15 A top view of the sample preparation apparatus shown. Figure 17 This is a schematic diagram of the structure of a clamp according to an embodiment of this application; Figure 18 yes Figure 17 A cross-sectional schematic diagram of the fixture shown; Figure 19 This is a schematic diagram of the structure of a sample assembly according to an embodiment of this application; Figure 20 yes Figure 19 A cross-sectional schematic diagram of the sample loading assembly shown; Figure 21 This is a schematic diagram of the structure of a load loading component according to an embodiment of this application; Figure 22 yes Figure 21 A cross-sectional schematic diagram of the load loading component shown; Figure 23 yes Figure 21 A partial cross-sectional schematic diagram of the load loading component shown; Figure 24 yes Figure 14 A schematic cross-sectional view of the sample preparation apparatus shown. Figure 25 yes Figure 24 A partially enlarged schematic diagram of the structure shown; Figure 26 This is a cross-sectional schematic diagram of a stamping assembly according to an embodiment of this application; Figure 27 yes Figure 26 A partially enlarged schematic diagram of the structure shown; Figure 28 yes Figure 26 A partially enlarged schematic diagram of the structure shown from another angle.

[0014] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding.

[0015] Explanation of reference numerals in the attached figures: 10. Fixture assembly; 11. First fixture; 111. First retaining fit; 112. First positioning fit; 113. First cover; 1131. First channel; 114. First ring; 1141. First receiving groove; 12. Second fixture; 121. Second cover; 1211. Sample slot; 1212. First measuring slot; 1213. Second measuring slot; 1214. Guide hole section; 122. Second ring; 1221. Second receiving groove; 123. Third ring; 21. Sample receiving and distributing unit; 211. Sample receiving component; 2111. Receiving slot; 2112. Transport slot; 212. Sample receiving component; 2121. Sample receiving slot; 21211. V-shaped surface; 2122. Gripper; 2123. Plate; 213. Vibrating component; 214. Support component; 2141. Support slot; 215. Collector; 22. Clamp tightening device; 221. First clamp holding part; 2211. First holding part; 2212. 222. Positioning component; 222. Second clamp holding part; 2221. Holding groove; 2222. Cut surface; 223. Rotating component; 224. Connecting assembly; 2241. Fastener; 2242. Elastic component; 225. Moving component; 23. Feeding part; 231. Sample picking and placing component; 232. Moving component; 233. Lifting component; 234. Punch clamping component; 235. Positioning component clamping component; 24. Punch receiving and distributing part; 241. Ball receiving component; 242. Ball outlet pipe; 2421, Main body section; 24211, First vertical extension section; 24212, Inclined extension section; 24213, Second vertical extension section; 2422, Cover; 2423, Opening; 243, Ball distribution component; 2431, Distribution body; 24311, Distribution channel; 24312, First channel; 24313, Second channel; 2432, Rod; 24321, Distribution hole; 2433, Reset component; 2434, First limiting component; 243 5. Second limiting component; 2436. Third limiting component; 2437. Distribution connector; 244. Detection component; 2441. Signal transmitter; 2442. Signal receiver; 245. Support column; 25. Horizontal moving component; 251. Base plate; 252. Vertical plate; 2521. Lifting slide rail; 26. Horizontal slide rail; 27. Punch rod holding part; 28. Positioning component holding part; 29. ​​Second fixture storage part; 201. Excess sample collection part; 202. Test platform; 30. Testing device; 31. Testing mounting component; 311. First testing mounting component; 3111. Mounting body; 3112. Mounting slot; 3113. Support part; 3114. Connecting part; 312. Second testing mounting component; 3121. Heat dissipation hole; 32. Deformation measuring component; 33. Force applying component; 34. Temperature measuring component; 35. Cooling component; 351. Cooling bottom shell; 352. Cooling cover; 3521. Overflow hole; 3522. Top through hole; 353. Collection tray; 36. Heating half component; 361. Heating tank; 37. Cooling rotating component; 38. Cooling lifting component; 41. Tensile testing machine; 411. Test base; 412. Guide component; 413. Force rod; 42. Punch rod; 420. Flat-head punch rod; 4201. Rod body; 4202. Rod end; 421. Punch ball; 44. Circular sample; 45. Positioning component; 451. Positioning channel; 4511. First groove; 4512. Second groove; 4513. Guide groove; 452. Positioning body; 453. Positioning protrusion; 50. Separator; 51. Disc; 52. Push rod; 60. Recycled parts; 710. Fixture; 7101. Lifting mating part; 7102. Moving mating part; 711. Clamping component; 7110. Gap; 7111. Connecting section; 71110. Through hole; 71111. Third moving mating channel; 71112. Anti-detachment part; 7112. First clamping section; 71120. Locking hole; 71121. First moving mating channel; 7113. Second clamping section; 71130. Locking mating hole; 71131. Opening mating hole; 71132. Second moving mating channel; 712. Locking limit component; 713. Opening component; 720. Grinding and polishing assembly; 721. Grinding disc; 722. Rotation drive component; 723. Protective component; 724. Base; 7241. Base sliding part; 725. Mounting component; 726. Moving drive component; 727. Transmission component; 730. Load loading assembly; 731. Base; 7311. Base body; 73111. Base through groove; 7312. Rotating component; 732. Load providing component; 7321. Providing component groove; 733. Load loading component; 7331. Load loading main body; 7332. Load loading part; 7333. Load loading support part; 7334. Fixture mating part; 7335. Load loading limiting part; 7341. First adjusting limiting part; 7342. Second adjusting limiting part; 73 5. Fixture loading platform; 7351. Guide part; 7352. Grinding and polishing limiting part; 740. Stamping assembly; 741. Stamping body; 7411. Receiving cavity; 7412. Stamping hole; 7413. Stamping mating part; 742. Stamped part; 7421. Stamping head; 7422. Connecting head; 743. Driving component; 7431. Cylinder; 74311. Piston rod; 7432. Connecting component; 744. Sample support component; 7441. Sample channel; 745. Stamping mating part; 7451. Clamping part; 74511. Cylindrical part; 74512. Sliding part; 7452. Force providing component; 746. Stamping platform; 746 1. Sample drop channel; 7462. Fixture guide; 747. Sample receiving and pushing part; 7471. Sample receiving part; 7472. Sample pushing part; 74721. Pushing drive part; 74722. Drive connecting rod; 748. Buffer; 750. Sample loading assembly; 751. Positioning and mounting part; 7511. Mounting platform; 75111. Fixture positioning groove; 75112. Sample sliding groove; 75113. Sample delivery sliding groove; 7512. Sample delivery component; 75121. Sample delivery body; 75122. Sample delivery pushing component; 752. Fixture locking part; 7521. Tightening part; 7522. Rotating part; 7523. Fixing component; 100. Sheet-shaped sample; 200. Pushing component. Detailed Implementation

[0016] Exemplary embodiments of this application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the development of any such actual embodiment to achieve the developer's specific goals, such as complying with constraints related to the system and business, and these constraints may vary depending on the implementation. Furthermore, it should be understood that while development work can be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who benefit from the content of this application.

[0017] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the equipment structure and / or processing steps closely related to the solution according to this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.

[0018] It should be noted that, unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning as understood by a person with ordinary skills in the field to which this application pertains.

[0019] In the description of the embodiments of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0020] When conducting small punch tests, the sheet-like samples need to be ground, polished, and punched to form circular samples. When the sample is a radioactive sample, it needs to be handled using a robotic arm in a heated chamber. However, due to the small size and extremely thin thickness of the sheet-like samples, it is currently difficult to achieve the above-mentioned manufacturing process using a robotic arm.

[0021] To address the aforementioned issues, embodiments of this application provide a sample preparation device suitable for a hot chamber small punch test system, which facilitates remote operation using a robotic arm within the hot chamber to prepare circular samples.

[0022] See Figure 15 and Figure 16 , Figure 15 This is a schematic diagram of the structure of a sample preparation apparatus according to an embodiment of this application; Figure 16 yes Figure 15The diagram shows a top view of the sample preparation apparatus. The sample preparation apparatus of an embodiment of this application includes: a sample loading assembly 750, a clamp 710, a polishing assembly 720, a load loading assembly 730, and a stamping assembly 740. The clamp 710 is configured to hold a sheet-like sample to be processed; the sample loading assembly 750 is configured to load the sheet-like sample into the clamp 710; the polishing assembly 720 is configured to polish the surface of the sheet-like sample; the load loading assembly 730 is configured to provide a polishing load to the sheet-like sample when the polishing assembly 720 polishes the surface of the sheet-like sample; the stamping assembly 740 is configured to stamp the polished sheet-like sample to obtain a circular sample; wherein, the clamp 710 and the load loading assembly 730 are configured to cooperate so that the sheet-like sample can enter between the load loading assembly 730 and the polishing disc 721 of the polishing assembly 720, and that the sheet-like sample can be polished by the polishing disc 721 under the polishing load.

[0023] The embodiments of this application, by setting up a sample loading assembly 750, a fixture 710, a polishing assembly 720, a load loading assembly 730, and a stamping assembly 740, enable the sample loading assembly 750 to load sheet samples into the fixture 710, and the fixture 710 to cooperate with the load loading assembly 730 so that the sheet samples can enter between the load loading assembly 730 and the polishing disc 721 of the polishing assembly 720. The sheet samples can be polished by the polishing assembly 720 under polishing load, and then the stamping assembly 740 is set to stamp the polished sheet samples to obtain circular sheet samples. Thus, circular sheet samples can be produced in a hot chamber by operating the sample loading assembly 750, fixture 710, polishing assembly 720, load loading assembly 730, and stamping assembly 740 with a robotic arm.

[0024] It is readily understood that, in the embodiments of this application, a robotic arm can be used to load a sheet sample onto a fixture 710 using a sample loading assembly 750, load the fixture 710 onto a load loading assembly 730 so that the sheet sample can be polished, and load the fixture 710 to a position so that the sheet sample can be stamped by a stamping assembly 740.

[0025] Because the sheet sample 100 is extremely thin, the clamps used in related technologies to hold the sheet sample 100 are typically complex and sophisticated in structure. To address this issue, embodiments of this application also provide a clamp with a simple structure that can hold the sheet sample 100.

[0026] See Figure 17 , Figure 18 as well as Figure 24In some embodiments, the clamp 710 includes a clamping member 711, a locking limit member 712, and a lifting member 713. The clamping member 711 is configured to form a slit 7110 for clamping the sheet sample 100; the locking and limiting member 712 is configured to lock the clamping member 711 to reduce the width of the slit 7110, thereby clamping the sheet sample 100, and to limit the length of the sheet sample 100 being clamped; the opening member 713 is configured to increase the width of the slit 7110, thereby allowing the sheet sample 100 to be removed; wherein, the clamping member 711 is configured to cooperate with the load loading member 733 of the load loading assembly 730 by a robotic arm operation, so that the sheet sample 100 can enter between the load loading member 733 and the grinding disc 721 of the small punch test sample preparation device, and the clamping member 711 is driven down by the load loading member 733, so that the sheet sample 100 can contact the grinding disc 721 and the load loading member 733 respectively, thereby allowing the sheet sample 100 to be ground and polished by the grinding disc 721 under the polishing load.

[0027] The clamp 710 provided in the embodiments of this application clamps the sheet sample 100 by forming a gap 7110 through the clamping member 711, and then locks the clamping member 711 to reduce the gap 7110 by locking the clamping member 712. This can clamp sheet samples 100 with extremely thin thickness (thickness below 0.3 mm, especially 0.1 mm). The gap 7110 is enlarged by the opening member 713, so that the sheet sample 100 remaining after stamping can be poured out by the gripper 710 held by the robot. Furthermore, by configuring the clamping member 711 to cooperate with the load loading member 733 through the operation of the robot arm, the sheet sample 100 can enter between the load loading member 733 and the grinding disc 721 of the small punch test sample preparation device. Moreover, by having the clamping member 711 descend through the load loading member 733, the sheet sample 100 can contact the grinding disc 721 and the load loading member 733 respectively. This enables the sheet sample 100 to be polished under the applied polishing load, which helps to reduce the difficulty of operating the robot arm.

[0028] In some embodiments, the clamping member 711 includes a connecting section 7111, a first clamping section 7112, and a second clamping section 7113. Both the first clamping section 7112 and the second clamping section 7113 are connected to the connecting section 7111, and a gap 7110 is formed between the first clamping section 7112 and the second clamping section 7113. The first clamping section 7112 and / or the second clamping section 7113 are configured to form a lifting engagement part 7101. The lifting engagement part 7101 can engage with the load loading member 733 through a robotic arm operation, so that the sheet sample 100 can enter between the load loading member 733 and the grinding disc 721, and the clamping member 711 can be lifted and lowered by the load loading member 733. The locking and limiting member 712 is configured to lock the first clamping section 7112 and the second clamping section 7113. The opening member 713 is configured to separate the first clamping section 7112 and the second clamping section 7113.

[0029] In this embodiment, the structure of the clamping member 711 allows the slit 7110 to be very narrow, thus enabling the clamping of the sheet sample 100. Because the slit 7110 is very narrow, the first clamping section 7112 and the second clamping section 7113 can be separated by the opening member 713, thereby removing the sheet sample 100. Since the lifting engagement 7101 can be engaged with the load loading member 733 by a robotic arm, related operations within the heated chamber are facilitated.

[0030] In some embodiments, the connecting segment 7111, the first clamping segment 7112, and the second clamping segment 7113 are integral parts, and the gap 7110 formed between the first clamping segment 7112 and the second clamping segment 7113 is a cut slit formed by cutting. In other words, the clamping member 711 is formed by cutting a metal substrate, wherein the gap 7110 formed between the first clamping segment 7112 and the second clamping segment 7113 is formed by cutting on one side of the metal substrate; the connecting segment 7111 is formed from the uncut portion of the metal substrate. This cutting method allows for the formation of a very narrow gap 7110 with low surface roughness, which is more conducive to clamping the sheet-like sample 100.

[0031] In some embodiments, the connecting segment 7111 has a through hole 71110, and the gap 7110 extends through the through hole 71110 to prevent cracks from forming at the root of the gap 7110 when the width of the gap 7110 is increased by the top opening member 713, so as to prevent the connecting segment 7111 from cracking.

[0032] In some embodiments, the first clamping section 7112 has a locking hole 71120, and the second clamping section 7113 has a locking engagement hole 71130. The locking limiting member 712 enters the locking engagement hole 71130 from the locking hole 71120 and locks the first clamping section 7112 and the second clamping section 7113 by threaded engagement with the locking engagement hole 71130. In this embodiment, the above-mentioned locking method can both clamp the sheet sample 100 and facilitate the operation of the robot arm. After the sheet sample 100 moves into the gap 7110 and abuts against the locking limiting member 712, it stops moving, thereby limiting the length of the sheet sample 100 entering the gap 7110.

[0033] The locking hole 71130 can be a threaded hole, and the locking limit member 712 can be a threaded fastener.

[0034] In some embodiments, the second clamping section 7113 is provided with a push-opening mating hole 71131, and the push-opening member 713 is configured to move up and down in the push-opening mating hole 71131 to push open the first clamping section 7112. The structure in which the first clamping section 7112 is pushed open by the push-opening member 713 moving up and down in the push-opening mating hole 71131 can both remove the sheet sample 100 and facilitate the operation of the robot arm.

[0035] In some embodiments, the opening mating hole 71131 can be a threaded hole, and the opening member 713 can be a threaded member. The opening member 713 moves toward the first clamping section 7112 within the opening mating hole 71131, thereby opening the first clamping section 7112.

[0036] In some embodiments, there are two lifting engagement parts 7101, symmetrically arranged on both sides of the gap 7110 on the clamping member 711; wherein, one lifting engagement part 7101 extends from the connecting section 7111 to the first clamping section 7112, and the other lifting engagement part 7101 extends from the connecting section 7111 to the second clamping section 7113. In such an embodiment, after polishing one side surface of the sheet sample 100 by using one lifting engagement part 7101 in conjunction with the load loading assembly 730, the other side surface of the sheet sample 100 can be polished by flipping the entire clamp 710 and using the other lifting engagement part 7101 in conjunction with the load loading assembly 730, without having to flip the sheet sample 100 in the clamp 710, thus simplifying the operation.

[0037] In some embodiments, the shape and size of the first clamping segment 7112 and the second clamping segment 7113 are symmetrical in the thickness direction of the clamp 710. This facilitates the clamp 710 to cooperate with the load loading assembly 730 both before and after flipping.

[0038] In some embodiments, the lifting mating part 7101 is a groove, the width of which is less than the thickness of the clamping mating part 7334 of the load loading member 733, so that the height at which the load loading member 733 descends is greater than the height at which the clamping member 711 descends, thereby enabling the load loading assembly 730 to contact the surface of the sheet sample 100 to apply a polishing load. In the embodiments of this application, before the load loading member 733 descends, the lifting fitting part 7101 and the clamp fitting part 7334 cooperate to allow the sheet sample 100 to enter between the load loading member 733 and the grinding disc 721. Then, the load loading member 733 drives the clamp 710 and the sheet sample 100 to descend, so that the clamp 710 reaches the polishing limit part 7352 (i.e., the polishing station), so that the lower surface of the sheet sample 100 contacts the grinding disc 721. As the load loading member 733 continues to descend, it can press the upper surface of the sheet sample 100, thereby enabling the lower surface of the sheet sample 100 to be polished under the polishing load.

[0039] In some embodiments, the clamping member 711 is further provided with a movable engaging portion 7102 for engaging with the pushing member 200 to move the clamping member 711 using the pushing member 200. In such embodiments, it is advantageous for a robotic arm to operate the pushing member 200 to move the clamping member 711.

[0040] In some embodiments, the movable mating portion 7102 is a slot; the connecting section 7111, the first clamping section 7112, and the second clamping section 7113 together form the slot; the connecting section 7111 is also configured to form an anti-detachment portion 71112 to prevent the pusher 200 from disengaging from the slot when it pushes the clamping member 711 to move. This facilitates the pusher 200 entering the slot and mating with the clamping member 711 before and after the clamp 710 flips over.

[0041] In some embodiments, the slot is connected to the through hole 71110 of the connecting section 7111, and the through hole 71110 is partially formed in the anti-detachment part 71112, which is more conducive to preventing cracks from forming at the root of the gap 7110 when the width of the gap 7110 is increased by the top opening member 713, thus preventing the connecting section 7111 from cracking.

[0042] In some embodiments, the first clamping section 7112 has a first moving engagement channel 71121, the second clamping section 7113 has a second moving engagement channel 71132, and the connecting section 7111 forms a third moving engagement channel 71111; the first moving engagement channel 71121, the second moving engagement channel 71132 and the third moving engagement channel 71111 are interconnected and together form a slot.

[0043] See Figure 19 and Figure 20 , Figure 19This is a schematic diagram of the structure of a sample assembly according to an embodiment of this application; Figure 20 yes Figure 19 The diagram shows a cross-sectional view of the sample loading assembly. In some embodiments, the sample loading assembly 750 includes a positioning mounting part 751 and a clamp locking part 752. The positioning mounting part 751 is configured to position the clamp 710 and mount the sheet sample 100 into the gap 7110 of the clamp 710; the clamp locking part 752 is configured to lock the clamp 710 so that the clamp 710 clamps the sheet sample 100. By providing the positioning mounting part 751 and the clamp locking part 752, it is convenient to remotely operate the robot for sample loading.

[0044] In some embodiments, the positioning and mounting part 751 includes a mounting platform 7511 and a sample feeder 7512; the mounting platform 7511 is configured to form a clamp positioning groove 75111 for fixing the clamp 710, a sample sliding groove 75112 for placing the sheet sample 100 and allowing the sheet sample 100 to slide, and a sample feeding sliding groove 75113 for allowing the sample feeder 7512 to slide; the sample feeder 7512 is configured to slide along the sample feeding sliding groove 75113 to push the sheet sample 100 to slide along the sample sliding groove 75112 and enter the gap 7110 of the clamp 710. In such an embodiment, a robotic arm can be remotely operated to place the clamp 710 in the clamp positioning groove 75111, place the sheet sample 100 in the sample sliding groove 75112, and push the sample feeder 7512 to slide along the sample feeding sliding groove 75113, thereby pushing the sheet sample 100 to slide along the sample sliding groove 75112 and enter the gap 7110 of the clamp 710.

[0045] In some embodiments, a sample delivery slide groove 75113 is formed on the bottom wall of the sample slide groove 75112; the sample delivery member 7512 includes a sample delivery body 75121 and a sample delivery pusher 75122 disposed on the sample delivery body 75121, the sample delivery body 75121 being configured to slide in the sample slide groove 75112; the sample delivery pusher 75122 being configured to slide along the sample delivery slide groove 75113 under the operation of a robot arm. In such an embodiment, since the sample delivery slide groove 75113 is formed on the bottom wall of the sample slide groove 75112, even if the sheet sample 100 is very thin, the sample delivery body 75121 can push the sheet sample 100 to slide, thereby allowing the sheet sample 100 to enter the gap 7110 of the clamp 710, without the sheet sample 100 entering between the sample delivery body 75121 and the bottom wall of the sample slide groove 75112, making it difficult to push the sheet sample 100.

[0046] In some embodiments, the clamp locking part 752 includes a tightening part 7521, a rotating part 7522, and a fixing member 7523. The tightening part 7521 is rotatably disposed on the rotating part 7522, and the rotating part 7522 is rotatably mounted on the fixing member 7523, so that the rotating part can rotate to the clamp positioning groove 75111 of the positioning mounting part 751; thereby enabling the tightening part 7521 to align with the locking limit member 712 of the clamp 710 located in the clamp positioning groove 75111, so as to tighten the locking limit member 712. In such an embodiment, after the sheet sample 100 is pushed into the gap 7110 of the clamp 710, the robot can rotate the rotating part 7522 so that the tightening part 7521 can be aligned with the locking limit member 712 of the clamp 710 located in the clamp positioning groove 75111, and then the robot can operate the tightening part 7521 to lock the locking limit member 712.

[0047] In some embodiments, the load loading assembly 730 and the clamp 710 are configured to cooperate so that the sheet sample 100 can enter between the load loading member 733 of the load loading assembly 730 and the grinding disc 721, and the clamp 710 is lowered by the load loading member 733 so that the sheet sample 100 can contact the grinding disc 721. The load loading member 733 can also be lowered separately relative to the clamp 710 after the sheet sample 100 contacts the grinding disc 721 so that the load loading member 733 can contact the sheet sample 100, so that the sheet sample 100 can be polished by the grinding disc 721 under polishing load.

[0048] In the embodiments of this application, by using a robotic arm to push the clamp 710 in the direction of the load loading member 733, the load loading member 733 can be engaged with the clamp 710; when the load loading member 733 drives the clamping member 711 to descend, the sheet sample 100 held by the clamping member 711 can come into contact with the grinding disc 721; when the load loading member 733 drives the clamping member 711 to rise, by using a robotic arm to pull the clamp 710 away from the load loading member 733, the clamp 710 can be separated from the load loading member 733, thereby removing the clamp 710.

[0049] In the embodiments of this application, since a separate clamp 710 is used to hold the sheet sample 100, a robotic arm is needed to assemble the clamp 710 with the load loading component and the grinding disc so that the sheet sample 100 can enter between the load loading component and the grinding disc. After the sheet sample 100 enters between the load loading component and the grinding disc, it also needs to contact both the load loading component and the grinding disc. Because the sheet sample 100 is extremely thin, it is difficult to assemble the clamp 710 with the load loading component and the grinding disc using a robotic arm. To address this problem, the embodiments of this application also provide a load loading component to facilitate the assembly of the clamp 710 with the load loading component and the grinding disc.

[0050] See Figures 21 to 25 In some embodiments, the load loading assembly 730 includes: a base 731, a load provider 732, and a load loading member 733. The load provider 732 is configured to provide a polishing load, and the load loading member 733 is configured to apply the polishing load provided by the load provider 732 to the sheet sample 100. The load provider 732 is also configured to be movable relative to the base 731 in a preset direction, and during the movement of the load loading member 733 relative to the base 731, the load loading member 733 and the load provider 732 can cooperate with the base 731 to rise and fall relative to the base 731. The load loading member 733 is also configured to cooperate with the fixture 710 so that the sheet sample 100 can enter between the load loading member 733 and the grinding disc 721, and the fixture 710 is driven down by the load loading member 733 so that the sheet sample 100 can contact the grinding disc 721 and the load loading member 733 respectively, thereby allowing the sheet sample 100 to be polished by the grinding disc 721 while the load loading member 733 provides polishing load.

[0051] In this embodiment, by setting the load loading member 733 to cooperate with the clamp 710, the sheet sample 100 can enter between the load loading member 733 and the grinding disc 721; by using a robot to push the load providing member 732 to move relative to the base 731 in a preset direction, the load loading member 733 can be raised and lowered relative to the base 731, and the clamp 710 and the sheet sample 100 can be raised and lowered together, so that the sheet sample 100 can contact the grinding disc 721 and the load loading member 733, so that while being polished by the grinding disc 721, the load loading member 733 provides polishing load, which helps to reduce the operation difficulty of the robot.

[0052] In some embodiments, after the load loading member 733 engages with the clamp 710, the sheet sample 100 enters between the load loading member 733 and the grinding disc 721, at which point there is a gap between the sheet sample 100 and both the load loading member 733 and the grinding disc 721. Then, the load providing member 732 moves relative to the base 731 in a predetermined direction, causing the load loading member 733 and the clamp 710 to descend together. This predetermined direction can be, for example, a horizontal direction.

[0053] In some embodiments, the clamp 710 and the load loading member 733 are configured to cooperate so that the load loading member 733 and the clamp 710 can descend to different heights, thereby ensuring that the sheet sample 100 contacts the grinding disc 721 after the clamp 710 descends, and that the load loading member 733 can press against the surface of the sheet sample 100 and contact the sheet sample 100 after descending.

[0054] In some embodiments, the load loading member 733 is further configured to continue descending relative to the clamp 710 after driving the clamp 710 down to bring the sheet sample 100 into contact with the grinding disc 721, thereby enabling the load loading member 733 to contact the sheet sample 100.

[0055] In some embodiments, the base 731 includes a base body 7311 and a rotating member 7312 disposed on the base body 7311. The load providing member 732 is provided with a mating groove that cooperates with the rotating member 7312. When the load providing member 732 moves relative to the base body 7311, the rotating member 7312 moves in and out of the mating groove, thereby enabling the load providing member 732 to rise and fall relative to the base body 7311. In such an embodiment, when the robot pushes the load providing member 732 to move relative to the base body 7311, the rotating member 7312 can move in and out of the mating groove, thereby enabling the load providing member 732 to rise and fall relative to the base body 7311.

[0056] In some embodiments, the rotating member 7312 is a circular wheel that rotates about its center, with one half of the circular wheel protruding from the base body 7311. The mating groove can be an arc-shaped groove to facilitate the circular wheel's movement in and out through rotation.

[0057] In some embodiments, the base body 7311 is provided with a base through groove 73111, and the load loading member 733 is movably disposed in the base through groove 73111; the load providing member 732 is provided with a providing slide groove 7321, and the load loading member 733 is configured to slide in the providing slide groove 7321 in a preset direction, and during the sliding process, it maintains support for the load providing member 732. In such an embodiment, when the robot pushes the load providing member 732 to move relative to the base body 7311, the load loading member 733 can slide in the providing slide groove 7321, so that as the load providing member 732 descends, the load loading member 733 can descend in the base through groove 73111 and press against the sheet sample 100. Since the load loading member 733 maintains support for the load providing member 732, after the load loading member 733 descends, the load provided by the load providing member 732 can be applied to the sheet sample 100 by the load loading member 733.

[0058] In some embodiments, the load loading member 733 includes: a load loading body 7331, a load loading part 7332, a load loading support part 7333, a clamping part 7334, and a load loading limiting part 7335. The load loading body 7331 is vertically and vertically disposed in the base through groove 73111 and is slidable in a preset direction in the feed member slide groove 7321. The load loading part 7332 is connected to the load loading body 7331 and is used to apply a polishing load to the sheet sample 100. The load loading support part 7333 is connected to the load loading body 7331. The main body 7331 is connected to support the load-providing component 732, so that the load of the load-providing component 732 can be transferred to the load-loading part 7332 through the load-loading main body 7331. The load-loading limiting part 7335 cooperates with the load-loading support part 7333 to prevent the load-loading main body 7331 from moving up or down relative to the load-providing component 732, ensuring that the load-loading support part 7333 continuously supports the load-providing component 732, thereby ensuring that the load of the load-providing component 732 can be transferred to the load-loading part 7332 through the load-loading main body 7331. The clamping mating part 7334 is used to cooperate with the lifting mating part 7101 of the clamp 710 so that the sheet sample 100 can enter between the load-loading part 7332 and the grinding disc 721, and the load-loading part 7332 drives the clamp 710 to move up and down so that the sheet sample 100 can contact the grinding disc 721. The load loading part 7332 descends to a greater height than the fixture 710 descends, so that the load loading part 7332 can contact the surface of the sheet sample 100 to apply a polishing load, so that the load loading part 7332 can apply a polishing load to the sheet sample 100 during the polishing process.

[0059] In some embodiments, when the lifting engagement part 7101 is a slide groove, the width of the slide groove is less than the thickness of the clamp engagement part 7334, so that the height to which the load loading part 7332 descends is greater than the height to which the clamp 710 descends. The clamp engagement part 7334 can be two slide rods, the width of the slide groove is less than the thickness of the slide rod, and the two slide rods respectively engage with the slide grooves on both sides in the width direction of the clamp 710, so that when the robot pushes the clamp 710, the slide rods enter the slide grooves, allowing the clamp 710 to be lifted and lowered by the clamp engagement part 7334.

[0060] In some embodiments, the load loading part 7332 is located below the base through groove 73111, and the size of the load loading part 7332 is larger than the inner diameter of the base through groove 73111, so as to prevent the load loading member 733 from detaching from the base 731, while facilitating the application of load to the sheet sample 100 by the load loading part 7332.

[0061] In some embodiments, the clamping part 7334 is disposed on the load loading body 7331 to facilitate its raising and lowering along with the load loading body 7331.

[0062] In some embodiments, the load loading assembly further includes a load adjustment section configured to adjust the load size provided by the load provider 732, thereby enabling the load loading assembly 730 of this application embodiment to provide different loads to the sheet sample 100.

[0063] In some embodiments, the load adjustment unit includes: a first adjustment limiting part 7341 and a second adjustment limiting part 7342, wherein the first adjustment limiting part 7341 is disposed on the load loading body 7331; the second adjustment limiting part 7342 is disposed on the base 731; and an elastic element is disposed between the first adjustment limiting part 7341 and the second adjustment limiting part 7342 for providing an upward force to the load loading body 7331, thereby reducing the load provided by the load providing member 732. With this configuration, the load provided by the load providing member 732 can be reduced by the elastic element without changing the structural dimensions of the load providing member 732.

[0064] In some embodiments, the load loading assembly 730 further includes a fixture loading platform 735, which is configured to form a guide portion 7351 and a polishing limiting portion 7352. The guide portion 7351 is configured to guide the fixture 710 so that the fixture 710 can engage with the fixture mating portion 7334 during movement under the guidance of the guide portion 7351. After the fixture 710 descends with the load loading portion 7332, it enters the polishing limiting portion 7352 so that the sheet sample 100 can be polished by the grinding disc 721 while preventing the fixture 710 from moving. In this embodiment, when the robot pushes the clamp 710 along the guide 7351, it can establish a fit between the clamp 710 and the clamp mating part 7334. At this time, the sheet sample 100 is located between the load loading member 733 and the grinding disc 721. Then, when the clamp 710 descends with the load loading member 733, the clamp 710 can enter the polishing limiting part 7352 and reach the polishing station. At this time, the sheet sample 100 contacts the grinding disc 721, and the clamp 710 is prevented from moving when the grinding disc 721 polishes the sheet sample 100.

[0065] In some embodiments, the guide portion 7351 is a guide groove, and the polishing limiting portion 7352 is a limiting groove. The bottom wall of the limiting groove is lower than the bottom wall of the guide groove. During the movement of the clamp 710 along the guide groove, it can establish a cooperation with the clamp mating portion 7334. After the clamp 710 descends with the load loading member 733, it enters the limiting groove and is limited in the limiting groove, preventing it from sliding in the limiting groove and avoiding the sheet sample 100 from moving away from the grinding disc 721.

[0066] In some embodiments, the load loading assembly 730 may further include a buffer 748 for providing a buffering force to the stamping mating part 745 to prevent the stamping mating part 745 from getting stuck at the bottom of the receiving cavity 7411 after descending to the bottom of the receiving cavity 7411 of the stamping body 741. The buffer 748 may be, for example, a rubber ring disposed at the bottom of the receiving cavity 7411.

[0067] See Figure 24 and Figure 25 In some embodiments, the polishing assembly 720 includes a polishing disc 721, a rotation drive 722, and a protective member 723. The rotation drive 722 is configured to drive the polishing disc 721 to rotate; the protective member 723 is configured to protect the polishing disc 721 from being cut by the rotating polishing disc 721; the protective member 723 is also configured to limit the clamp 710 to prevent the clamp 710 from moving toward the polishing disc 721. The rotation of the polishing disc 721 enables the sheet sample 100 to be polished, and the limiting of the clamp 710 by the protective member 723 prevents the clamp 710 from moving toward the polishing disc 721, thereby placing the clamp 710 in the polishing limiting part 7352 and keeping it in the polishing position.

[0068] In some embodiments, the protective member 723 forms a relief groove at the position of the load loading portion 7332 of the load loading assembly 730 so that the sheet sample 100 can descend with the fixture 710 to contact the grinding disc 721.

[0069] In some embodiments, the grinding disc 721 is detachably connected to the rotation drive 722; the grinding and polishing assembly 720 further includes a base 724, a mounting member 725, and a moving drive 726; the mounting member 725 is slidably disposed on the base 724, and the rotation drive 722 and the protective member 723 are mounted on the mounting member 725; the moving drive 726 is configured to move the mounting member 725, thereby removing the grinding disc 721 from the bottom of the load loading assembly 730 for replacement. Since the grinding disc 721 needs to be replaced, the moving drive 726 allows the grinding disc 721 to be moved from the bottom of the load loading assembly 730, thus enabling its replacement.

[0070] The moving drive 726 may include a rotating part that can be rotated by the robot and a transmission part 727, thereby driving the mounting part 725 to move through the cooperation of the rotating part and the transmission part 727. The transmission part 727 may be, for example, a threaded rod.

[0071] In some embodiments, the base 724 is provided with a base sliding portion 7241, and the mounting member 725 is provided in the sliding engagement portion of the base sliding portion 7241, so that the mounting member 725 can slide relative to the base 724. In such an embodiment, by providing the mounting member 725 in the sliding engagement portion of the base sliding portion 7241, the mounting member 725 can slide relative to the base 724, thereby facilitating the removal of the grinding disc 721 from the bottom of the load loading assembly 730, and thus enabling its replacement.

[0072] After both surfaces of the sheet sample 100 are polished, the polished sheet sample 100 needs to be stamped using the stamping assembly 740 to form a circular sheet sample 44.

[0073] Because the sheet sample 100 is extremely thin, it is difficult to operate when using a robotic arm to feed the sheet sample 100 to the stamping assembly, and the resulting circular sheet sample 44 is prone to bending and deformation. To address this problem, embodiments of this application also provide a stamping assembly.

[0074] See Figures 26 to 28 , Figure 26 This is a cross-sectional schematic diagram of a stamping assembly according to an embodiment of this application; Figure 27 yes Figure 26 A partially enlarged schematic diagram of the structure shown; Figure 28 yes Figure 26 A partially enlarged schematic diagram of the structure shown from another angle. In some embodiments, the stamping assembly 740 includes: a stamping body 741, a stamping member 742, a drive member 743, a clamp guide 7462, a sample support 744, and a stamping mating member 745; the clamp guide 7462 is configured to guide the clamp 710 for holding the sheet sample 100, so that the clamp 710 can move under the guidance of the clamp guide 7462 to a position where the sheet sample 100 can be stamped by the stamping member 742; the sample support 744 is configured to provide support to the sheet sample 100 held by the clamp 710; the stamping... The pressing component 742 and the stamping mating component 745 are disposed on the stamping body 741. The driving component 743 is configured to drive the pressing component 742 and the stamping mating component 745 to move up and down within the stamping body 741. The pressing component 742 is configured to press the sheet sample 100 into a circular sample 44. The stamping mating component 745 is configured to contact the sheet sample 100 before the pressing component 742 when the pressing component 742 is pressing the sheet sample 100, thereby cooperating with the sample support component 744 to maintain the stability of the sheet sample 100 and prevent the circular sample 44 formed by the stamping from deforming.

[0075] The stamping assembly 740 provided in the embodiments of this application, by setting a clamp guide 7462, can use a robot to push the clamp 710 to a position where the sheet sample 100 can be stamped by the stamping part 742 under the guidance of the clamp guide 7462, which is convenient for robot operation. In order to ensure that the sheet sample 100 held by the clamp 710 does not deform during the movement, there is a small gap between the lower surface of the sheet sample 100 and the upper surface of the sample support 744. If the sheet sample 100 is directly stamped by the stamping part 742, the formed circular sample 44 will be deformed because the sheet sample 100 is not stably supported by the sample support 744. The embodiments of this application, by setting a stamping fitting 745, can contact the sheet sample 100 before the stamping part 742, so that the sheet sample 100 can be tightly attached to the sample support 744 under the action of the stamping fitting 745. Then, the stamping fitting 745 and the sample support 744 simultaneously provide stable support for the sheet sample 100 on the upper and lower surfaces of the sheet sample 100. In this way, when the stamping part 742 stamps the sheet sample 100, the resulting circular sheet sample 44 is not easily deformed.

[0076] In some embodiments, the stamping mating member 745 includes a clamping part 7451 and a force providing member 7452, disposed on the stamping body 741; the clamping part 7451 is configured to clamp the sheet-like sample 100, and the stamping member 742 stamps the sheet-like sample 100 from the inside of the clamping part 7451; the force providing member 7452 is used to provide a force to the clamping part 7451 to move toward the sample support member 744; the driving member 743 drives the stamping member 742 and the force providing member 7452 to descend simultaneously, and under the force of the force providing member 7452, the clamping part 7451 can contact the sheet-like sample 100 before the stamping member 742. In this embodiment, the stamping part 742 and the force-providing part 7452 can be lowered simultaneously by the driving member 743 alone; and the force provided by the force-providing part 7452 enables the clamping part 7451 to contact the sheet sample 100 before the stamping part 742, which makes the implementation more reliable.

[0077] In some embodiments, the clamping part 7451 includes a cylindrical member 74511 and a sliding member 74512. The cylindrical member 74511 is disposed radially outside the stamping head 7421 of the stamping member 742. The sliding member 74512 is connected to the cylindrical member 74511 and is slidably disposed on the stamping body 741. A force providing member 7452 is disposed on the side of the sliding member 74512 away from the cylindrical member 74511, and is used to provide a force to the sliding member 74512 to move toward the cylindrical member 74511. In such an embodiment, the stamping head 7421 of the stamping member 742 emerges from the inside of the cylindrical member 74511 to stamp the sheet sample 100. The cylindrical member 74511 can contact the sheet sample 100 before the stamping head 7421, thereby pressing the sheet sample 100 and preventing the stamped disc sample 44 from deforming and affecting the sample quality.

[0078] In some embodiments, the drive member 743 includes a cylinder 7431 and a connector 7432 for detachably connecting the piston rod 74311 of the cylinder 7431 to the stamping member 742, so that the stamping member 742 can be easily replaced after it wears out.

[0079] In some embodiments, the stamping member 742 includes: a stamping head 7421 and a connector 7422 for connecting the stamping head 7421 to a connector 7432 of the drive member 743; a force-providing member 7452 of the stamping mating member 745 is disposed between the connector 7422 and the sliding member 74512 of the stamping mating member 745. During the process of the drive member 743 driving the connector 7422 to descend, the connector 7422 drives the force-providing member 7452 to descend simultaneously, which helps to ensure that the pressing part 7451 contacts the sheet sample 100 before the stamping head 7421.

[0080] In some embodiments, the stamping body 741 is configured to form a receiving cavity 7411, in which both the stamping member 742 and the stamping mating member 745 are vertically and vertically disposed. A stamping hole 7412 is formed on the side of the stamping body 741 facing the sample support 744, through which the stamping head 7421 of the stamping member 742 and the cylindrical member 74511 of the stamping mating member 745 can extend outwards. In such an embodiment, the inner wall of the receiving cavity 7411 can guide the vertical movement of the stamping member 742 and the stamping mating member 745.

[0081] In some embodiments, the stamping assembly 740 further includes a stamping platform 746, and the fixture guide 7462 can be a guide groove formed on the stamping platform 746. When the manipulator pushes the fixture 710 to move along the guide groove, the fixture 710 can be moved to a position where the sheet sample 100 can be stamped by the stamping assembly 742.

[0082] In some embodiments, the position where the sheet sample 100 can be stamped by the stamping member 742 can be the position where the clamp 710 abuts against the stamping mating part 7413 of the sample support member 744 and / or the stamping body 741.

[0083] In some embodiments, when the clamp 710 is located in the clamp guide 7462, the upper surface of its lower clamping section (first clamping section 7112 or second clamping section 7113) is about 1 mm higher than the upper surface of the sample support 744, so as to avoid the sheet sample 100 from deforming due to friction with the sample support 744.

[0084] In some embodiments, the stamping assembly 740 further includes a sample receiving and pushing section 747, which is used to receive the stamped disc sample 44 and push the disc sample 44 along the stamping platform 746 to the sample receiving container. The embodiments of this application, by providing the stamping platform 746 and the sample receiving and pushing section 747, facilitate the removal of the stamped disc sample 44 to the sample receiving container.

[0085] In some embodiments, the sample receiving and pushing unit 747 includes a sample receiving unit 7471 and a sample pushing unit 7472. The sample receiving unit 7471 is disposed below the sample channel 7441 of the sample support 744 and is used to receive the disc sample 44 falling through the sample channel 7441. The sample pushing unit 7472 is configured to drive the sample receiving unit 7471 to translate, so as to push the disc sample 44 along the stamping platform 746 to the sample falling channel 7461 of the stamping platform 746, and then fall from the sample falling channel 7461 into the sample receiving container. By providing the sample receiving unit 7471, the embodiments of this application can receive the disc sample 44 formed by stamping, and then use the sample pushing unit 7472 to push the disc sample 44 to the sample falling channel 7461 for collection.

[0086] In some embodiments, the sample receiving section 7471 forms a funnel-shaped receiving groove, which facilitates the easy downward fall of the disc sample 44 into the sample falling channel 7461.

[0087] In some embodiments, the top opening of the receiving slot is larger than the size of the sample channel 7441 to ensure that the disc sample 44 falling from the sample channel 7441 can enter the sample receiving part 7471 and will not fall to other positions.

[0088] In some embodiments, the sample pushing unit 7472 includes a pushing drive unit 74721 and a driving connecting rod 74722. The driving connecting rod 74722 is connected to the sample receiving unit 7471. The pushing drive unit 74721 is used to drive the driving connecting rod 74722 to translate, thereby driving the sample receiving unit 7471 to move between directly below and directly above the sample falling channel 7461, so that the disc sample 44 in the sample falling channel 7461 can fall into the receiving slot and fall from the receiving slot into the sample falling channel 7461.

[0089] Embodiments of this application also provide a hot chamber punch testing system, comprising: a sample preparation apparatus according to any embodiment of this application, a first clamp and a second clamp, a loading device, a clamp tightening device, and a testing device. The sample preparation apparatus is used to prepare a circular sample; the first clamp and the second clamp cooperate to hold the circular sample and the punch; the loading device is used to place the circular sample and the punch into the second clamp; the clamp tightening device is used to tighten the first clamp and the second clamp after the circular sample and the punch are placed into the second clamp using the loading device; the testing device is used to apply a force to the punch and measure the deformation of the circular sample under the applied force.

[0090] When conducting small punch tests, a fixture assembly is needed to assemble the punch and the sample. When the sample is radioactive, a robotic arm is required to operate it in a heated chamber. However, due to the extremely small size of the sample and the punch, it is difficult to achieve the above assembly process using only a robotic arm.

[0091] To address the aforementioned problems, embodiments of this application also provide a small punch testing system for placing a circular sample and a punch into a fixture assembly, thereby applying force to the circular sample using the punch to perform a small punch test. The fixture assembly is used to hold the circular sample and the punch, and includes a first fixture and a second fixture. The second fixture receives the circular sample, the punch ball, and the flat-headed punch, while the first fixture cooperates with the second fixture to fix the positions of the circular sample, the punch ball, and the flat-headed punch.

[0092] Figure 1 This is a partial structural schematic diagram of a small punch test system according to an embodiment of this application, where the test device is not shown. Figure 2 This is a schematic diagram of the structure of the testing device according to an embodiment of this application after being assembled in a tensile testing machine; Figure 3 This is a schematic diagram of the structure after the punch and the disc sample are assembled in the fixture assembly according to one embodiment of this application. See also Figures 1 to 3The testing system includes: a sample preparation apparatus, a loading device, a clamping device 22, and a testing device 30, according to any embodiment of this application. The sample preparation apparatus is used to prepare a circular sample 44; the loading device is used to place the circular sample 44 and the punch 42 into the second clamp 12; the clamping device 22 is used to tighten the first clamp 11 and the second clamp 12 after the circular sample 44 and the punch 42 are placed into the second clamp 12 by the loading device; the testing device 30 is used to apply a force to the punch 42 in the first clamp 11 and the second clamp 12, and to measure the amount of deformation of the circular sample 44 under the action of the force.

[0093] The embodiments of this application, by providing a loading device and a clamping tightening device 22, enable the loading device to assemble the disc sample 44 and the punch 42 together with the second clamp 12, and the clamping tightening device 22 to tighten the first clamp 11 and the second clamp 12. Compared to assembling only using a robot in a hot chamber, the embodiments of this application facilitate easier assembly of the disc sample 44 and the punch 42 with the clamp assembly 10 within the hot chamber.

[0094] In some embodiments, the loading device includes a sample receiving and distributing unit 21, a second clamping storage unit 29, and a loading unit 23. The sample receiving and distributing unit 21 receives multiple disc samples 44 and distributes one disc sample 44. The second clamping storage unit 29 stores a second clamp 12. The loading unit 23 places the distributed disc sample 44 into the second clamp 12 stored in the second clamping storage unit 29. In such an embodiment, a robotic arm can pour multiple disc samples 44 into the sample receiving and distributing unit 21, then the sample receiving and distributing unit 21 distributes one disc sample 44, and the loading unit 23 places the distributed disc sample 44 into the second clamp 12. Since it is difficult for a robotic arm to grasp a single disc sample 44, this operation is simpler for the robotic arm.

[0095] In some embodiments, the second clamp storage section 29 may form a storage slot in which the second clamp 12 is placed.

[0096] In some embodiments, Figure 7 yes Figure 1 A schematic diagram of the sample receiving and distributing section 21 of the small punch test system shown; Figure 8 yes Figure 1 A partial schematic diagram of the sample receiving and distributing section 21 of the small punch test system is shown below. Figure 7 and Figure 8As shown, the sample receiving and distributing unit 21 includes a sample receiving member 211, a sample receiving member 212, and a vibrating member 213. The sample receiving member 211 forms a receiving groove 2111 and a transport groove 2112 communicating with the receiving groove 2111. The receiving groove 2111 is used to receive multiple disc samples 44. The sample receiving member 212 forms a sample receiving groove 2121, which communicates with the transport groove 2112. The sample receiving groove 2121 is configured to accommodate only one disc sample 44 at a time. The vibrating member 213 is used to drive the sample receiving member 211 to vibrate, so that multiple disc samples 44 in the receiving groove 2111 can enter the transport groove 2112, and so that one disc sample 44 can enter the sample receiving groove 2121.

[0097] In such an embodiment, a robotic arm can be used to pour multiple disc samples 44 into the receiving groove 2111. Then, under the action of the vibrating element 213, the disc samples 44 move along the transport groove 2112. After one disc sample 44 enters the sample receiving groove 2121, the vibrating element 213 can be turned off to prevent other disc samples 44 from continuing to move into the sample receiving groove 2121, so that the sample receiving and distributing unit 21 distributes one disc sample 44.

[0098] In some embodiments, the vibrating element 213 may be disposed at the bottom of the sample receiver 211 to drive the sample receiver 211 to vibrate as a whole.

[0099] In some embodiments, the bottom surfaces of the receiving groove 2111 and the transport groove 2112 are inclined surfaces extending downward toward the sample receiving groove 2121, so that the disc sample 44 can move toward the sample receiving groove 2121 under the action of the vibrating member 213. The width of the transport groove 2112 is smaller than the width of the receiving groove 2111, so that the disc sample 44 can move toward the sample receiving groove 2121 faster under the action of the vibrating member 213, and avoids scattering in all directions.

[0100] In some embodiments, the surface of the sample receiving groove 2121 facing the transport groove 2112 is a V-shaped surface 21211, and the distance between the V-shaped surface 21211 and the transport groove 2112 is less than the diameter of a circular sample 44. In such an embodiment, due to the effect of the V-shaped surface 21211, it is advantageous to ensure that the sample receiving groove 2121 can accommodate only one circular sample 44, thereby facilitating the removal of the circular sample 44 by the loading part 23.

[0101] In some embodiments, the sample receiving and dispensing unit 21 further includes a support member 214 and a collector 215. The support member 214 forms a support groove 2141, and the sample container 212 is movably disposed within the support groove 2141; the support member 214 also forms a support space, which is directly below and communicates with the support groove 2141. The collector 215 is movably disposed in the support space so that after the sample container 212 is removed from the support groove 2141, the disc sample 44 in the transport trough 2112 can enter the support groove 2141 and fall into the collector 215 under the action of the vibration member 213.

[0102] In such an embodiment, after the test is completed, the sample container 212 can be removed from the support groove 2141 by a robotic arm, and the vibration element 213 can be turned on so that the disc sample 44 in the transport groove 2112 moves toward the support groove 2141 and enters the support groove 2141 and falls from the support groove 2141 into the collection member 215. Then, the collection member 215 can be removed from the support space by a robotic arm to realize the recovery of the unused disc sample 44.

[0103] In some embodiments, the sample container 212 may include a plate 2123 and a gripper 2122 disposed on the plate 2123. The gripper 2122 is used to facilitate gripping by a robotic arm. The plate 2123 is movably disposed in the support groove 2141, and the inwardly recessed portion of the end face of the plate 2123 facing the transport groove 2112 and located above the support groove 2141 forms a V-shaped surface 21211.

[0104] In some embodiments, the portion of the transport trough 2112 that connects with the sample receiving trough 2121 may have an isosceles trapezoidal shape to converge toward the sample receiving trough 2121.

[0105] In some embodiments, Figure 9 yes Figure 1 A schematic diagram of the loading section 23 of the small punch test system is shown; see also Figure 9 The loading section 23 includes a sample pick-and-place member 231, a moving member 232, and a lifting member 233. The sample pick-and-place member 231 picks up a circular sample 44 located in the sample receiving slot 2121 and releases the circular sample 44 into the second clamp storage section 29. The moving member 232 moves the sample pick-and-place member 231 to directly above the sample receiving slot 2121 and directly above the second clamp storage section 29. The lifting member 233 moves the sample pick-and-place member 231 up and down, so that the sample pick-and-place member 231 can contact the circular sample 44 to pick it up, and can enter the second clamp 12 to release the circular sample 44 into the second clamp 12.

[0106] In some embodiments, the moving member 232 is a rotating member to drive the sample pick-and-place member 231 to rotate. For example, when the sample pick-and-place member 231 rotates 180 degrees, the sample pick-and-place member 231 is located directly above the sample receiving groove 2121; when the sample pick-and-place member 231 rotates 180 degrees again, the sample pick-and-place member 231 is located directly above the second clamp storage part 29.

[0107] In some embodiments, the sample pick-up and drop-off member 231 is configured to pick up the disc sample 44 using negative pressure and release the sample using positive pressure.

[0108] Figure 4 yes Figure 1 Top view of the small punch test system shown; see also Figure 4 In some embodiments, the loading device further includes a punch holding part 27 for holding the punch 42; the feeding part 23 is also used to place the punch 42 into the second clamp 12 in the second clamp storage part 29.

[0109] In some embodiments, the punch retainer 27 includes a plurality of retaining grooves into which the lower part of the punch 42 is placed.

[0110] See Figure 9 The loading section 23 includes a punch clamping member 234 for clamping the punch 42 from the punch holding section 27 to place the punch 42 in the second fixture 12. It is disposed opposite to the sample pick-and-place member 231. Both the punch clamping member 234 and the sample pick-and-place member 231 are connected to the second rotating member 223 so that the punch clamping member 234 and the sample pick-and-place member 231 are rotated by the second rotating member 223, so that one of the punch clamping member 234 and the sample pick-and-place member 231 is aligned with the second fixture 12 in the second fixture storage section 29.

[0111] In some embodiments, the punch is a one-piece structure, and the one-piece punch is a round-head punch.

[0112] In some embodiments, the punch 42 is a split structure, comprising a flat-head punch 420 and a punch ball 421, with a punch holder 27 for holding the flat-head punch 420. Correspondingly, a punch clamp 234 clamps the flat-head punch 420 from the punch holder 27. In such embodiments, the loading device further includes a punch receiving and distributing section 24 and a horizontal moving member 25. The punch receiving and distributing section 24 receives a plurality of punch balls 421 and distributes one of the punch balls 421 to fall. The horizontal moving member 25 moves the second clamp storage section 29 so that the punch ball 421 falling from the punch receiving and distributing section 24 can enter the second clamp 12.

[0113] In this embodiment, a robotic arm can pour multiple punch balls 421 into the punch receiving and distributing section 24, and then the punch receiving and distributing section 24 distributes one punch ball 421, which falls into the second gripper 12. Since it is difficult for the robotic arm to grasp a single punch ball 421, this operation is simpler for the robotic arm.

[0114] Figure 11 yes Figure 1 A schematic diagram of the punch receiving and distributing section 24 of the small punch test system shown; Figure 12 yes Figure 11 A cross-sectional schematic diagram of the punch receiving and distributing section 24 is shown; as shown Figure 11 and Figure 12 As shown, in some embodiments, the punch receiving and distributing unit 24 includes: a ball receiving member 241, a ball outlet pipe 242, and a ball distributor 243. The ball receiving member 241 is used to receive a plurality of punch balls 421; the outlet end of the ball outlet pipe 242 is suspended; the ball distributor 243 is used to allow one of the punch balls 421 from the ball receiving member 241 to enter the ball outlet pipe 242 and fall from the outlet end of the ball outlet pipe 242.

[0115] In some embodiments, the ball distributor 243 includes a distributor body 2431 and a rod 2432. The distributor body 2431 forms a distributor channel 24311 and a first channel 24312 and a second channel 24313 communicating with the distributor channel 24311. The first channel 24312 and the second channel 24313 are staggered from each other. The ball receiver 241 and the ball outlet pipe 242 are respectively connected to the first channel 24312 and the second channel 24313. The rod 2432 is provided with a distribution hole 24321. The rod 2432 is movably disposed in the distribution channel 24311 so that the distribution hole 24321 can be aligned with the first channel 24312 or the second channel 24313. When the distribution hole 24321 is aligned with the first channel 24312, a punch ball 421 in the ball receiving member 241 can enter the distribution hole 24321 through the first channel 24312. When the distribution hole 24321 is aligned with the second channel 24313, the punch ball 421 that has entered the distribution hole 24321 can enter the ball outlet pipe 242 through the second channel 24313.

[0116] In this embodiment, since the ball receiver 241 is connected to the first channel 24312, the punch ball 421 in the ball receiver 241 will enter the first channel 24312. When it is necessary to put a punch ball 421 into the clamp assembly, the lever 2432 can be moved relative to the distribution channel 24311 to align its distribution hole 24321 with the first channel 24312. At this time, the punch ball 421 in the ball receiver 241 of the first channel 24312 enters the distribution hole 24321. Then, the lever 2432 is moved relative to the distribution channel 24311 to align its distribution hole 24321 with the second channel 24313. The punch ball 421 in the distribution hole 24321 enters the second channel 24313, thereby entering the ball outlet pipe 242 connected to the second channel 24313. In this process, the robotic arm only needs to move the lever 2432 relative to the distribution channel 24311 to distribute the punch ball 421.

[0117] In some embodiments, the ball receiver 241 is connected to the distribution body 2431 above the distribution body 2431 so that the punch ball 421 in the ball receiver 241 can enter the first channel 24312 under the action of gravity; the ball outlet pipe 242 is connected to the distribution body 2431 below the distribution body 2431 so that the punch ball 421 entering the second channel 24313 can enter and exit the ball outlet pipe 242 under the action of gravity.

[0118] In some embodiments, the ball receiver 241 may be funnel-shaped to receive multiple punch balls 421 poured in by the robotic arm, while allowing the punch balls 421 to enter the first channel 24312 under gravity. The outlet size at the bottom of the ball receiver 241 may be substantially the same as the size of the first channel 24312.

[0119] In some embodiments, the size of the first channel 24312 is 1.1-1.3 times the size of the punch ball 421, so that the punch balls 421 entering the first channel 24312 can only be distributed along the axial direction (or length direction) of the first channel 24312, avoiding two or more punch balls 421 from entering the distribution hole 24321 at the same time. In some embodiments, the thickness of the rod 2432, i.e. the height of the distribution hole 24321, is 1.1-1.3 times the outer diameter of the punch ball 421, to ensure that only one ball punch can be accommodated in the distribution hole 24321, avoiding two or more punch balls 421 from entering the distribution hole 24321 at the same time when the distribution hole 24321 is aligned with the first channel 24312.

[0120] In some embodiments, the ball distributor 243 further includes a reset member 2433, which provides a force to the rod 2432 when the rod 2432 moves to align the distribution hole 24321 with the second channel 24313, thereby moving the rod 2432 from the position where the distribution hole 24321 aligns with the second channel 24313 (from the current position) to the position where the distribution hole 24321 aligns with the first channel 24312. In such an embodiment, the robot only needs to move the rod 2432 once relative to the distribution channel 24311 to distribute the punch ball 421.

[0121] In some embodiments, the reset member 2433 may be a spring sleeved on the rod 2432.

[0122] In some embodiments, the punch receiving and distributing unit 24 may further include a support column 245, and the distributing body 2431 is connected to the support column 245 for support by the support column 245. The ball distributing member 243 may include a distributing connector 2437, and the distributing body 2431 is connected to the support column 245 through the distributing connector 2437.

[0123] The rod 2432 is movably mounted on the support column 245. The support column 245 may have a through hole through which the rod 2432 passes into the distribution channel 24311.

[0124] In some embodiments, the ball distributor 243 may include a first limiting member 2434 and a second limiting member 2435 disposed on the rod 2432 to limit the range of movement of the rod 2432 relative to the distribution channel 24311.

[0125] The first limiting member 2434 is located between the support column 245 and the distributing body 2431, and the second limiting member 2435 is located on the side of the support column 245 away from the distributing body 2431, used to limit the movement range of the rod 2432. When the rod 2432 moves to the point where the second limiting member 2435 abuts against the support column 245, the distributing hole 24321 aligns with the second channel 24313; when the rod 2432 moves to the point where the first limiting member 2434 abuts against the support column 245, the distributing hole 24321 aligns with the first channel 24312.

[0126] In some embodiments, the ball distributor 243 may include a third limiting member 2436 disposed on the rod 2432, and a reset member 2433 sleeved on the rod 2432. The two ends of the reset member 2433 abut against the third limiting member 2436 and the support column 245, respectively, to keep the rod 2432 in the position where the first limiting member 2434 abuts against the support column 245. At this time, a punch ball 421 has already fallen into the distribution hole 24321 of the rod 2432. When the rod 2432 is pushed by a robotic arm, the rod 2432 moves to the position where the second limiting member 2435 abuts against the support column 245, and the punch ball 421 in the distribution hole 24321 enters the second channel 24313 and then enters the ball outlet pipe 242.

[0127] During the process of loading the punch ball 421 into the second clamp 12, it is difficult to observe with the naked eye whether the punch ball 421 has entered the second clamp 12. In some embodiments, the punch receiving and distributing unit 24 further includes a detection element 244 for detecting whether the punch ball 421 has entered the ball outlet pipe 242. By setting the detection element 244, it is possible to determine whether the punch ball 421 has entered the ball outlet pipe 242. When no punch ball 421 has entered the ball outlet pipe 242, the robotic arm repeatedly operates the lever 2432 until a punch ball 421 enters the ball outlet pipe 242, thereby ensuring the accuracy of subsequent tests.

[0128] In some embodiments, the detection element 244 includes a signal transmitter 2441 and a signal receiver 2442, which are arranged opposite each other on radial sides of the ball outlet pipe 242. The signal transmitter 2441 is used to continuously transmit signals, and the signal receiver 2442 is used to receive signals. Two openings 2423 are formed oppositely on the pipe wall of the ball outlet pipe 242, and the two openings 2423 face the signal transmitter 2441 and the signal receiver 2442, respectively. When the punch ball 421 passes through the ball outlet pipe 242, it forms a blockage between the two openings 2423, and the signal received by the signal receiver 2442 is interrupted, thereby determining that the punch ball 421 has entered the ball outlet pipe 242. In such an embodiment, it is convenient to determine whether the punch ball 421 has entered the ball outlet pipe 242.

[0129] The signal transmitter 2441 and the signal receiver 2442 can be mounted on two support columns 245.

[0130] In some embodiments, there are two ball receivers 241 and two ball outlet channels 242, with each receiving a punch ball 421 of a different outer diameter. The ball distributor 243 has a distributing body 2431 forming two distributing channels 24311 with different inner diameters. The ball distributor 243 includes two rods 2432, which are movably disposed in their respective distributing channels 24311. In this embodiment, only one punch receiving and distributing part 24 is required to distribute two different sizes of punch balls 421.

[0131] In some embodiments, the punch receiving and distributing unit 24 may include two support columns 245, with the distributing body 2431 connected to the two support columns 245, and each rod 2432 passing through one of the support columns 245. Both ball outlet channels 242 are located between the signal transmitter 2441 and the signal receiver 2442, sharing a common detection element 244. The openings 2423 of the two ball outlet channels 242, the signal transmitter 2441, and the signal receiver 2442 are all aligned in a straight line.

[0132] In some embodiments, the ball outlet pipe 242 includes a main pipe section 2421 and a cover 2422 disposed at the lower end of the main pipe section 2421. When the second clamp 12 is located directly below the outlet end of the ball outlet pipe 242 under the action of the horizontal moving member 25, the cover 2422 can block the upper opening of the second clamp 12 to prevent the punch ball 421 from popping out.

[0133] In some embodiments, the body tube segment 2421 may include a first vertical extension segment 24211, an inclined extension segment 24212, and a second vertical extension segment 24213. The first vertical extension segment 24211 is connected to the dispensing body 2431 to facilitate the smooth entry of the punch ball 421 in the second channel 24313 into the first vertical extension segment 24211. The inclined extension segment 24212 connects the first vertical extension segment 24211 and the second vertical extension segment 24213, and a cover 2422 is disposed at the outlet of the second vertical extension segment 24213. The inclined extension segment 24212 facilitates the outward protrusion of the outlet of the ball outlet pipe 242, thereby facilitating the placement of a clamp assembly for receiving the punch ball 421.

[0134] In some embodiments, the small punch test system of this application may further include a clamp assembly 10. Figure 10 yes Figure 3 The exploded view of the punch 42, the circular sample 44, and the fixture assembly 10 is shown; see also Figure 3 and Figure 10The fixture assembly 10 may include a positioning element 45, which is disposed in the first fixture 11 and the second fixture 12 for positioning the circular sample 44 and the punch 42.

[0135] See Figure 4 In some embodiments, the loading device further includes: a positioning member holding part 28 for holding the positioning member 45; and a feeding part 23 for placing the positioning member 45 into the second clamp 12 in the second clamp storage part 29.

[0136] See Figure 9 In some embodiments, the loading section 23 further includes a positioning clamping member 235 for clamping the positioning member 45 from the positioning member holding section 28 to place the positioning member 45 in the second clamp 12. The positioning clamping member 235 is disposed directly below the punch clamping member 234. Since the size of the positioning member 45 is larger than the size of the punch 42, placing the positioning clamping member 235 directly below the punch clamping member 234 does not affect the clamping and releasing of the punch 42 by the punch clamping member 234.

[0137] See Figure 4 In some embodiments, the sample receiving and dispensing section 21 has a sample receiving groove 2121, the punch holding groove 2221 of the punch holding section 27 has a punch holding groove 2221, and the positioning member holding groove 2221 of the positioning member holding section 28 are on a straight line parallel to the movement trajectory of the horizontal moving member 25; the horizontal moving member 25 is also used to drive the loading section 23 to move so that the sample picking and placing member 231, the punch holding member 234, and the positioning member holding member 235 can be aligned with the sample receiving groove 2121, the punch holding groove 2221, and the positioning member holding groove 2221, respectively.

[0138] In some embodiments, the small punch test system includes a test platform 202. Except for the test device 30, other structures of the small punch test system can be mounted on the test platform 202. The test platform 202 is provided with a horizontal slide rail 26 extending in a preset direction, and a horizontal moving member 25 can move along the horizontal slide rail 26.

[0139] See Figure 9 The horizontal moving part 25 may include a base plate 251 and a vertical plate 252 connected to the base plate 251. The second clamp storage part 29 is disposed on the base plate 251. The vertical plate 252 is provided with a lifting slide rail 2521. The loading part 23 is movably disposed on the lifting slide rail 2521, so that it can move up and down relative to the vertical plate 252.

[0140] See Figure 3 and Figure 10In some embodiments, the first clamp 11 and the second clamp 12 form a receiving cavity, and the positioning member 45 is disposed in the receiving cavity and pressed onto the circular sample 44. The flat-head punch 420 includes a rod body 4201 and a rod end 4202 connected to the rod body 4201. The size of the rod end 4202 is smaller than that of the rod body 4201, and the size of the rod end 4202 is substantially the same as that of the punch ball 421.

[0141] The positioning element 45 forms a positioning channel 451, through which the punch ball 421 and the flat-head punch 420 enter and contact the circular sample 44. The positioning channel 451 includes a first groove 4511 away from the circular sample 44, a second groove 4512 facing the circular sample 44, and a guide groove 4513 connecting the first groove 4511 and the second groove 4512. The inner diameter of the first groove 4511 is larger than the inner diameter of the second groove 4512. The guide groove 4513 facilitates the entry of the rod end 4202 of the flat-head punch 420 and the punch ball 421 into the second groove 4512.

[0142] When the first clamp 11 and the second clamp 12 are tightened, the positioning member 45 will press the circular sample 44; at the same time, since the rod end 4202 of the flat-head punch 420 and the punch ball 421 are too small, the positioning member 45 is set to facilitate the loading of the flat-head punch 420 and the punch ball 421 by the punch clamp 234 and the ball outlet pipe 242 respectively.

[0143] The top of the positioning channel 451 can be formed into a funnel-shaped hole to facilitate the entry of the circular sample 44, the flat-head punch 420, and the punch ball 421 into the positioning channel 451.

[0144] In some embodiments, the first clamp 11 includes a first cover 113 and a first ring 114 connected to the first cover 113, the first ring 114 forming a first receiving groove 1141; the first cover 113 forms a first channel 1131 communicating with the first receiving groove 1141 for the punch 42 to extend out of the receiving cavity.

[0145] In some embodiments, the second clamp 12 includes a second cover 121, a second ring 122 connected to the second cover 121, and a third ring 123 connected to the second ring 122. The second ring 122 forms a second receiving groove 1221; the second cover 121 forms a second channel communicating with the second receiving groove 1221; and the third ring 123 is used to connect with a first ring 114, thereby assembling the first clamp 11 and the second clamp 12. The second channel includes a guide hole section 1214, a sample groove 1211, and a first measuring groove 1212 connected in sequence. The inner diameter of the sample groove 1211 is larger than the inner diameter of the first measuring groove 1212, and the outer diameter of the disc sample 44 is larger than the inner diameter of the first measuring groove 1212 but smaller than the inner diameter of the sample groove 1211. The disc sample 44 is disposed in the sample groove 1211.

[0146] In some embodiments, the first clamp 11 and the second clamp 12 are threaded together. In some embodiments, the radial outer surface of the first ring 114 is threaded, and the radial inner surface of the third ring 123 is threaded. The inner diameter of the third ring 123 is larger than the inner diameter of the second ring 122.

[0147] In some embodiments, the positioning member 45 includes a positioning body 452 and a positioning protrusion 453, the positioning protrusion 453 entering the second hole section and abutting against the disc sample 44. The shape of the positioning protrusion 453 matches the guide hole section 1214 so as to enter the guide hole section 1214 and abut against the disc sample 44.

[0148] The inventors of this application discovered that when the second clamp 12 contacts the first clamp 11, there may sometimes be a slight misalignment between the threads of the second clamp 12 and the first clamp 11, making it difficult to smoothly connect the second clamp 12 and the first clamp 11 together. If the second rotating member 223 is used to forcibly connect the second clamp 12 and the first clamp 11 by thread, the positioning member 45 cannot press the circular sample 44, affecting the test results. To address this problem, this application also provides a clamp tightening device 22.

[0149] Figure 5 yes Figure 1 A partial schematic diagram of the clamping device 22 of the small punch test system shown, where the clamp assembly 10 is not shown; Figure 6 It is to assemble and arrange the fixtures in Figure 5 The diagram shows the structure of the clamp tightening device 22; as shown. Figure 1 , Figure 5 and Figure 6 As shown, the clamp tightening device 22 includes: a first clamp holding part 221, a second clamp holding part 222, a second rotating member 223, and a connecting assembly 224. The first clamp holding part 221 is used to hold the first clamp 11. The second clamp holding part 222 is used to hold the second clamp 12. The second rotating member 223 is used to drive the second clamp holding part 222 to rotate about the rotation axis, thereby driving the second clamp 12 to rotate. The connecting assembly 224 is used to connect the second clamp holding part 222 and the second rotating member 223. The connecting assembly 224 is configured such that the second clamp holding part 222 can deviate from the rotation axis, so as to facilitate the second clamp 12 to establish a threaded connection with the first clamp 11 during rotation. In this embodiment, even if there is a slight misalignment between the threads of the second clamp 12 and the first clamp 11, the second clamp can smoothly establish a threaded connection with the first clamp during rotation because the connecting assembly is configured such that the second clamp holding part can deviate from the rotation axis.

[0150] In some embodiments, the connecting assembly 224 includes a plurality of fasteners 2241 and an elastic member 2242. The fasteners 2241 connect the second rotating member 223 and the second clamp holding portion 222, and the plurality of fasteners 2241 are spaced apart around a rotation axis. The elastic member 2242 is disposed between the second rotating member 223 and the second clamp holding portion 222 to provide a force deviating from the rotation axis to the second clamp holding portion 222. When the second clamp 12 contacts the first clamp 11, and the second rotating member 223 drives the second clamp 12 to rotate, the elastic member 2242 provides a force deviating from the rotation axis to the second clamp holding portion 222, causing the second clamp 12 to wobble slightly relative to the rotation axis, facilitating a threaded connection with the first clamp 11.

[0151] In some embodiments, the fastener 2241 is a screw. In some embodiments, the elastic element 2242 is a spring sleeved on the fastener 2241.

[0152] In some embodiments, the clamp tightening device 22 further includes a moving member 225 for driving the second rotating member 223 and the second clamp holding part 222 to move toward the first clamp holding part 221 so that the second clamp 12 can contact the first clamp 11.

[0153] In some embodiments, the second clamp holding portion 222 is provided with a holding groove 2221, the holding groove 2221 having a cross-section 2222; the cross-section of the second clamp 12 matches the holding groove 2221 so that the second clamp 12 can enter the holding groove 2221. The cross-section 2222 is used to ensure that after the second clamp 12 enters the holding groove 2221, the second clamp 12 can remain relatively stationary with respect to the holding groove 2221 in the circumferential direction, thereby allowing the second rotating member 223 to drive the second clamp 12 and the second clamp holding portion 222 to rotate.

[0154] In some embodiments, the retaining groove 2221 has six facets 2222 with hexagonal cross-sections. The corners between two adjacent facets 2222 are rounded to facilitate the smooth placement of the second clamp 12 into the positioning groove.

[0155] In some embodiments, the first clamp holding portion 221 includes a first holding member 2211, and the first clamp 11 includes a first holding engagement member 111. Through the engagement of the first holding member 2211 and the first holding engagement member 111, the first clamp 11 can be held by the first clamp holding portion 221.

[0156] In some embodiments, the first clamp holding part 221 includes a first positioning member 2212, and the first clamp 11 includes a first positioning mating member 112. Through the cooperation of the first positioning member 2212 and the first positioning mating member 112, the first clamp 11 can remain relatively stationary with respect to the first holding member 2211 in the circumferential direction.

[0157] In some embodiments, the first retainer 2211 is two oppositely arranged bosses; the first retaining mating member 111 is two oppositely arranged sliding grooves.

[0158] In some embodiments, the first positioning element 2212 is a positioning pin; the first positioning mating element 112 is a positioning groove that is off-axis.

[0159] See Figure 1 In some embodiments, the testing system further includes an excess sample collector 201 for collecting excess disc samples 44 scraped off from the loading section 23 by a robotic arm. Sometimes, more than one disc sample 44 may enter the sample receiving slot 2121, for example, two. When the sample pick-up and dropper 231 picks up the disc sample 44, it may pick up two disc samples 44 simultaneously. In this case, the sample pick-up and dropper 231 can be moved directly above the excess sample collector 201 using the horizontal moving member 25, and the robotic arm can scrape off the excess sample. The scraped-off excess disc sample 44 enters the excess sample collector 201. The excess sample collector 201 is movably configured to be removed by the robotic arm.

[0160] See Figure 1 and Figure 4 In some embodiments, the testing system further includes a separator 50 for separating the punch ball 421 and the disc sample 44 from the second clamp 12 after the test. In some cases, after the test, the disc sample 44 deforms and becomes stuck in the sample groove 1211 of the second clamp 12 along with the punch ball 421, making it difficult to remove. In this case, the separator 50 can be used to separate the punch ball 421 and the disc sample 44 from the second clamp 12.

[0161] In some embodiments, the separator 50 includes a disc 51 and a push rod 52 disposed in the disc 51. After the test, the second cover 121 of the second clamp 12 is placed on the disc 51 by a robot arm, and the second clamp 12 is pressed down. The push rod 52 passes through the first measuring groove 1212 and pushes the disc sample 44 and the punch ball 421 out of the sample groove 1211 of the second clamp 12.

[0162] See Figure 1 and Figure 4 In some embodiments, the test system further includes a recovery unit 60, which is movably disposed on the test platform 202, and the punch ball 421, disc sample 44, etc. after the test can be put into the recovery unit 60 for recovery.

[0163] In some embodiments, the testing device 30 is disposed on the tensile testing machine 41, see [reference]. Figure 2The tensile testing machine 41 includes a test base 411, a guide member 412 disposed on the test base 411, and a force-applying rod 413 disposed on the guide member 412. The testing device 30 includes a test mounting member 31, a deformation measuring member 32, and a force-applying member 33. The clamp assembly 10 is mounted on the test mounting member 31. The test mounting member 31 is disposed on the test base 411, and the force-applying member 33 is connected to the force-applying rod 413 for applying force to the punch 42. The deformation measuring member 32 is used to measure the deformation of the circular sample 44 under the action of the applied force.

[0164] Figure 13 yes Figure 2 A partial structural schematic diagram of the testing device 30; Figure 14 yes Figure 13 Another structural schematic diagram of the testing device 30 from another angle, as shown below. Figure 13 and Figure 14 As shown, the test device 30 also includes a temperature measuring element 34, which is disposed on the test mounting component 31. The temperature measuring element 34 is used to measure the temperature of the fixture assembly 10.

[0165] like Figure 3 and Figure 10 As shown, in some embodiments, a second measuring groove 1213 is formed on the side of the second clamp 12 away from the first clamp 11. A temperature measuring element 34 is used to enter the second measuring groove 1213 to measure the temperature of the second clamp 12. The second measuring groove 1213 may be, for example, an annular groove.

[0166] In some embodiments, the testing apparatus 30 further includes a cooling element 35 for cooling the fixture assembly 10 to test the disc sample 44 at a temperature below room temperature.

[0167] In some embodiments, the cooling member 35 includes a cooling base shell 351 and a cooling cover shell 352. The cooling base shell 351 is detachably connected to the test mounting member 31; the cooling cover shell 352 is configured to move up and down and rotate relative to the test mounting member 31, thereby being able to be fitted onto the force-applying member 33 and the cooling base shell 351 to form a receiving cavity for receiving the cooling medium, and to be separated from the force-applying member 33.

[0168] In some embodiments, the cooling housing 352 is provided with a top through hole 3522 for the force-applying member 33 to pass through.

[0169] The testing device 30 may also include a cooling rotating component 37 and a cooling lifting component 38. The cooling rotating component 37 is used to drive the cooling cover 352 to rotate relative to the test mounting component 31, so that the cooling cover 352 can rotate to a position coaxial with the force application component 33, or rotate to a position offset from the force application component 33. The cooling lifting component 38 is used to drive the cooling cover 352 to move up and down relative to the test mounting component 31, so that when the cooling cover 352 is coaxial with the force application component 33, the cooling cover 352 can be lowered to engage with the cooling bottom shell 351 or raised to a preset height through the up and down movement.

[0170] When the cooling cover 352 and the force-applying member 33 are coaxial, the force-applying member 33 can pass through or move out of the top through hole 3522 of the cooling cover 352 by the movement of the force-applying rod 413 relative to the guide member 412.

[0171] The cooling component 35 also includes a cooling medium delivery line for delivering the cooling medium into the receiving cavity. In some embodiments, the cooling medium may be liquid nitrogen.

[0172] In some embodiments, the test mounting component 31 may include a first test mounting component 311 and a second test mounting component 312. The first test mounting component 311 is connected to the test base 411, and the second test mounting component 312 is detachably connected to the first test mounting component 311. The second test mounting component 312 may be plugged into or threaded into the first test mounting component 311.

[0173] The first test mounting component 311 may include a mounting body 3111, with a mounting groove 3112 formed on the top of the mounting body 3111. The assembled fixture assembly 10 is arranged in the mounting groove 3112. The deformation measuring component 32 and the temperature measuring component 34 extend from the bottom wall of the mounting groove 3112, respectively.

[0174] The first test mounting component 311 may further include a support portion 3113, with the cooling base shell 351 fitted onto the mounting body 3111 and cooperating with the support portion 3113, which supports the cooling base shell 351. The support portion 3113 may be a protrusion that extends radially out of the mounting body 3111.

[0175] In some embodiments, the cooling housing 352 is provided with an overflow hole 3521 for the cooling medium in the cooling component 35 to overflow. The cooling component 35 includes a collection tray 353, which is detachably disposed on the test mounting component 31 and located below the cooling base 351, for collecting overflowing liquid nitrogen.

[0176] The collection tray 353 can be externally piped to guide excess liquid nitrogen to the ground. In some embodiments, a heat dissipation structure is formed on the lower surface of the collection tray 353 to allow the liquid nitrogen to evaporate as quickly as possible. The heat dissipation structure can be, for example, multiple annular ribs protruding downwards from the lower surface of the collection tray 353.

[0177] In some embodiments, the first test mounting member 311 further includes a connecting portion 3114 disposed at the bottom of the mounting body 3111, and the first test mounting member 311 is connected to the second test mounting member 312 through the connecting portion 3114. The outer diameter of the connecting portion 3114 is smaller than that of the mounting body 3111, so that a boss is formed at the top end face of the second test mounting member 312. The collecting tray 353 mates with the top end face of the second test mounting member 312, and is supported by the top end face of the second test mounting member 312. The collecting tray 353 may have a through hole for the connecting portion 3114 to pass through. During assembly, the collecting tray 353 can be first disposed on the top end face of the second test mounting member 312, and then the connecting portion 3114 of the first test mounting member 311 can be inserted into the through hole of the collecting tray 353 to connect with the second test mounting member 312.

[0178] In some embodiments, the testing apparatus 30 further includes a heating element for heating the fixture assembly 10 to test the disc sample 44 at a temperature above room temperature.

[0179] In some embodiments, the heating element includes two heating halves 36 disposed opposite to each other, the two heating halves 36 being hinged together so that the relative position of the two heating halves 36 can be switched between an open state and a closed state; wherein, when the relative position of the two heating halves 36 is in the open state, the cooling element 35 can enter between the two heating halves 36 to cool the clamp assembly 10.

[0180] The heating half 36 can form a heating groove 361. When the two heating half 36 are closed, the two heating grooves 361 together form a heating cavity. A first through hole is formed at the top of the heating cavity for the force-applying component 33 to pass through. A second through hole is formed at the bottom of the heating cavity for the test mounting component 31 to pass through.

[0181] When the fixture assembly 10 is heated using the heating element, the cooling cover 352 can be raised to a preset height and then rotated by a preset angle to offset the cooling cover 352 from the force-applying element 33. The cooling base 351 and the collection tray 353 are then removed from the test mounting component 31. After that, the two heating halves 36 are closed, and the force-applying element 33 is passed through the first through hole of the heating element.

[0182] Since the deformation measuring element 32 and the temperature measuring element 34 are arranged on the test mounting component 31, the first test mounting component 311 and the second test mounting component 312 are provided with channels for arranging the deformation measuring element 32 and the temperature measuring element 34. In order to reduce the high temperature of the deformation measuring element 32 and the temperature measuring element 34 when the heating element heats the fixture assembly 10, a heat dissipation hole 3121 communicating with the aforementioned channel can be opened on the second test mounting component 312 for heat dissipation.

[0183] During the small punch test, the force-applying component 33 drives the punch 42 to punch the circular sample 44 at a certain speed. The sensor of the tensile testing machine 41 and the deformation measuring component 32 record the punch load and the sample deformation, respectively, so as to analyze and obtain various mechanical property parameters of the material.

[0184] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0185] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. The scope of protection of this application shall be determined by the scope of the claims.

Claims

1. A stamping assembly suitable for a small punch test sample preparation device, characterized in that, It includes: Stamping body, stamping parts, drive parts, fixture guide parts, sample support parts, and stamping mating parts; The clamp guide is configured to guide the clamp for holding the sheet sample, so that the clamp can be moved under the guidance of the clamp guide to a position where the sheet sample can be stamped by the stamping part. The sample support is configured to provide support for the sheet-like sample held by the clamp; The stamped part and the stamped mating part are disposed on the stamping body, and the driving part is configured to drive the stamped part and the stamped mating part to move up and down within the stamping body; The stamping component is configured to stamp the sheet-shaped sample into a circular sheet sample; The stamping fitting is configured to contact the sheet sample before the stamping part when the stamping part stamps the sheet sample, thereby cooperating with the sample support to maintain the stability of the sheet sample and prevent deformation of the circular sheet sample formed by stamping.

2. The stamping assembly according to claim 1, characterized in that, The stamped fitting includes: A clamping part and a force-providing part are disposed on the stamping body; The clamping part is configured to clamp the sheet-like sample, and the stamping part stamps the sheet-like sample from the inside of the clamping part; The force-providing component is used to provide a force to the clamping part to move toward the sample support; The driving member drives the stamping part and the force providing member to descend simultaneously, and the force provided by the force providing member enables the clamping part to contact the sheet sample before the stamping part.

3. The stamping assembly according to claim 2, characterized in that, The clamping part includes: A cylindrical component is disposed radially outside the stamping head of the stamping part; A sliding member is connected to the cylindrical component, and the sliding member is slidably disposed on the stamping body; The force-providing component is disposed on the side of the slider away from the cylinder, and is used to provide the slider with a force that moves toward the cylinder.

4. The stamping assembly according to claim 1, characterized in that, The drive component includes a cylinder and a connector for detachably connecting the piston rod of the cylinder to the stamping part.

5. The stamping assembly according to claim 1, characterized in that, The stamped part includes: A stamping head and a connector for connecting the stamping head to the drive member; The force-providing component of the stamped fitting is disposed between the connector and the sliding component of the stamped fitting. During the process of the drive component driving the connector to descend, the connector drives the force-providing component to descend simultaneously.

6. The stamping assembly according to claim 1, characterized in that, The stamping body is configured to form a receiving cavity, and both the stamping part and the stamping mating part can be vertically and vertically disposed in the receiving cavity; The stamping body has a stamping hole on one side facing the sample support, and the stamping head of the stamping part and the cylindrical part of the stamping mating part can extend outward from the stamping hole.

7. The stamping assembly according to any one of claims 1-6, characterized in that, Also includes: The stamping platform, wherein the fixture guide is a guide groove formed on the stamping platform.

8. The stamping assembly according to claim 7, characterized in that, Also includes: The sample receiving and pushing unit is used to receive the stamped disc sample and push the disc sample along the stamping platform to the sample receiving container.

9. The stamping assembly according to claim 8, characterized in that, The sample receiving and pushing unit includes: A sample receiving unit is disposed below the sample channel of the sample support member, and is used to receive the disc sample falling through the sample channel; The sample pushing unit is configured to drive the sample receiving unit to translate, so as to push the disc sample along the stamping platform to the sample falling channel of the stamping platform, and fall from the sample falling channel into the sample receiving container.

10. A sample preparation apparatus suitable for a hot chamber small punch test system, characterized in that, include: Sample loading assembly, fixture, grinding and polishing assembly, load loading assembly, and stamping assembly as described in any one of claims 1-9. The clamp is configured to hold sheet-like samples to be processed; The sample loading assembly is configured to load the sheet-like sample into the fixture; The polishing assembly is configured to polish the surface of the sheet sample. The load loading component is configured to provide a polishing load to the sheet sample when the polishing component polishes the surface of the sheet sample; The stamping assembly is configured to stamp the polished sheet sample to obtain a circular sample. The fixture is also configured to cooperate with the load loading component so that the sheet sample can enter between the load loading component and the grinding disc of the polishing component, and so that the sheet sample can be polished by the grinding disc under the polishing load.

11. A hot chamber small punch test system, characterized in that, It includes: The sample preparation apparatus of claim 10 is used to prepare circular sample. A first clamp and a second clamp, which cooperate to hold the circular sample and the punch; A loading device is used to place the circular sample and the punch into the second fixture; A clamping device is used to tighten the first clamp and the second clamp after the circular sample and the punch are placed into the second clamp using the loading device; A testing device is used to apply a force to the punch and measure the amount of deformation of the circular sample under the action of the force.

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