A quick-release fixture and indentation testing device for an indentation tester

Abstract

This utility model discloses a quick-release fixture for an indenter, comprising: a main board with an open slot, a sliding groove communicating with the open slot, and guide rails corresponding to the open slot and the sliding groove, wherein the indenter can extend into the open slot and move along the guide rail within the sliding groove; a fixing mechanism connected to opposite sides of the main board for a detachable connection between the main board and the object to be tested; a positioning block that can move along the guide rail within the sliding groove, and is locked and unlocked by a locking mechanism; the locking mechanism unlocks the positioning block, allowing it to move along the guide rail to the target position in the sliding groove; the locking mechanism then locks the positioning block, allowing it to remain at the target position in the sliding groove; the indenter moves along the guide rail within the sliding groove until it abuts against the positioning block, thus achieving indentation point positioning by the indenter. The fixing mechanism of this utility model fixes the quick-release fixture to the metal surface to be tested, moves the positioning block to the target position, locks it with the locking mechanism, inserts it into the indenter, and completes the test, resulting in high testing efficiency and accurate data.

Description

Technical Field

[0001] This utility model belongs to the field of testing technology, and in particular relates to a quick-release clamp for an indenter. Background Technology

[0002] In the field of mechanical property testing of metallic materials, macro-indentation is widely used for on-site residual stress and hardness testing due to its non-destructive and efficient characteristics. Traditional indenters require direct fixation to the surface of steel components via a magnetic base. After each single-point indentation, the magnetic unit must be completely disassembled before moving to a new test point. This process has significant drawbacks: frequent disassembly and reassembly of the magnetic unit is not only cumbersome and time-consuming, but repeated adsorption can also lead to a decrease in positioning accuracy, severely impacting the efficiency of large-scale multi-point testing. Especially in the continuous testing of large structures (such as ships, bridges, and pressure vessels), traditional methods are insufficient to meet the engineering requirements of rapid, multi-position switching.

[0003] To address the above issues, there is an urgent need for a clamping solution that can balance strong adsorption force with rapid position adjustment. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, this utility model provides a quick-release fixture for an indenter, which avoids the cumbersome procedure of moving and re-clamping the entire fixture. It can achieve the detection of multiple points on the surface of the metal object to be tested through a single clamping and fixing, which greatly improves the detection efficiency and accuracy.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a quick-release clamp for an indentation instrument, comprising:

[0006] The motherboard has an open slot, a sliding groove connected to the open slot, and a guide rail corresponding to the open slot and the sliding groove. The indenter can extend into the open slot and move along the guide rail in the sliding groove.

[0007] A fixing mechanism, connected to opposite sides of the motherboard, is used for a detachable connection between the motherboard and the device under test;

[0008] The positioning block can move along the guide rail within the slide groove, and the locking mechanism enables the positioning block to be locked in one position and unlocked in another.

[0009] The locking mechanism unlocks the positioning block, allowing it to move along the guide rail to the target position of the slide. The locking mechanism then locks the positioning block, allowing it to remain at the target position of the slide. The indenter moves along the guide rail within the slide until it abuts against the positioning block, thus achieving the positioning of the indenter.

[0010] This invention uses a fixing mechanism to determine the target area for testing. Simultaneously, the sliding groove, guide rail, positioning block, and indenter work together to allow the indenter to move flexibly along the sliding groove within the target area, quickly switching target positions for testing. Multi-point testing can be completed without readjusting the fixing mechanism, shortening testing time and improving efficiency. The fixing mechanism is stably fixed to the surface of the metal object, ensuring the target area does not shift and that the positioning of all target positions is consistent. Compared to traditional testing methods, where each switch of target position requires complete separation of the entire fixture from the metal object surface, realignment, and clamping, which prolongs testing time and may disrupt the initial positioning of the fixture, necessitating repeated clamping steps, resulting in low testing efficiency and cumulative positioning errors, this quick-mount fixture allows for multi-point testing with a single clamping, ensuring consistent positioning of all target positions and guaranteeing data accuracy. It also eliminates the time spent on clamping and disassembling the fixture during multi-point testing, significantly shortening the switching time between different points, improving testing efficiency, and enhancing testing continuity.

[0011] Furthermore, the groove extends along the X-axis, and the positioning block can translate along the X-axis, forming a positioning fit in the Y-axis and Z-axis directions. This makes the movement range of the positioning block more flexible, allowing for rapid switching of target positions for detection, thus improving the continuity and efficiency of detection.

[0012] Furthermore, the positioning block has a first vertical positioning surface on both sides that abuts against the side of the slide groove, a second vertical positioning surface that abuts against the side of the guide rail, and a third and fourth horizontal positioning surface that are vertically opposite each other. The third horizontal positioning surface abuts against the lower surface of the slide groove opening, and the fourth horizontal positioning surface abuts against the upper surface of the guide rail. Through the abutting cooperation between the first and second vertical positioning surfaces and the side of the slide groove, the positioning block can be stably positioned in the Z-axis direction. Through the abutting cooperation between the third and fourth horizontal positioning surfaces and the slide groove and guide rail, the positioning block can be stably positioned in the Y-axis direction. This ensures that the positioning block can only translate in the X-axis direction, guaranteeing the positional accuracy of the positioning block during movement. The overall fit structure is simple, reducing the difficulty of component processing.

[0013] Furthermore, the guide rail consists of bosses located on both sides of the lower part of the slide groove and the open slot. This guide rail serves as a common positioning element for both the indenter and the positioning block during movement, ensuring a consistent positioning relationship and reducing positioning errors between them. This, in turn, guarantees the accuracy and effectiveness of the indenter's detection at designated positions.

[0014] Furthermore, the locking mechanism comprises at least two components, respectively located on opposite sides of the positioning block. Each locking mechanism includes a locking pin, a locking block movably sleeved on the outside of the locking pin, a rotating shaft connected to the end of the locking pin, an eccentric cam rotatably connected to the rotating shaft, and a wrench connected to the eccentric cam. The locking pin passes through a slot in the main board and connects to the positioning block. This locking mechanism maintains the locked state without additional external force, improving the efficiency of locking and unlocking the positioning block, and making the quick-release clamp compact and easy to operate.

[0015] Furthermore, the slide groove extends along the length of the motherboard; or, the slide groove includes a first groove extending along the length of the motherboard and a second groove extending along the width of the motherboard. Extending the range of the slide groove makes the movement range of the positioning block more comprehensive and the target position that can be selected more flexibly.

[0016] Furthermore, the fixing mechanism is a magnetic switch, which can magnetically attract or de-attract the metal object to be tested. This fixing mechanism uses magnetic attraction to adhere to the metal object without causing wear on its surface, and by turning the magnetic attraction on or off, the quick-release clamp can be quickly clamped and disassembled, making operation convenient and time-saving.

[0017] Furthermore, the positioning block is connected to a cross-shaped laser positioner. Installing the cross-shaped laser positioner avoids the impact of human error on positioning accuracy, making the indenter's detection data more precise.

[0018] This utility model also discloses an indentation testing device, including an indenter and the aforementioned quick-release fixture.

[0019] Furthermore, the outer wall of the indenter is provided with a flange, which moves along the guide rail within the slide groove; a second locking mechanism is provided above the flange on the outer wall of the indenter, which includes a locking eccentric wheel that rotates and locks in the direction of the positioning block. The second locking mechanism enables the indenter to be stably fixed on the main board and to fit tightly with the positioning block, thereby improving the accuracy of the test data.

[0020] This invention innovatively designs a single-axis magnetic clamp specifically for macroscopic indentation instruments. Its core lies in the integration of a dual magnetic base (fixing mechanism) and a linked quick-adjustment mechanism (cooperation between the main board and positioning block). The two fixing mechanisms ensure stable device fixation, while four quick-adjustment wrenches (two locking mechanisms and two secondary locking mechanisms) control the linear displacement of the clamp. During operation, simply release the locking mechanism to slide the indenter along the single axis to the target position; relocking allows for the next indentation test. This design completely eliminates repeated disassembly and assembly of the clamp, reducing position switching time to the second level, significantly improving testing efficiency and positioning consistency, and providing a revolutionary solution for large-area non-destructive testing in industrial settings.

[0021] The beneficial effects of this utility model are as follows: The target area for detection is determined by the fixing mechanism. Simultaneously, the sliding groove, guide rail, positioning block, and indenter cooperate with each other, allowing the indenter to move flexibly along the sliding groove within the target area, quickly switching target positions for detection. Multi-point detection can be completed without readjusting the fixing mechanism, shortening detection time and improving efficiency. The fixing mechanism is stably fixed to the surface of the metal object, ensuring that the target area does not shift and that the positioning of all target positions is consistent. Compared to traditional detection methods, where switching target positions requires completely separating the entire fixture from the surface of the metal object, realigning it, and clamping it again, which prolongs detection time and may damage the initial positioning of the fixture, necessitating repeated clamping steps, resulting in low detection efficiency and cumulative positioning errors, the quick-mount fixture allows for multi-point detection with a single clamping, ensuring consistent positioning of all target positions and guaranteeing data accuracy. It also eliminates the time spent on clamping and disassembling the fixture during multi-point detection, significantly shortening the switching time between different point detections, improving detection efficiency, and enhancing the continuity of detection. The flange, slide, and guide rail of the indenter cooperate with each other and are aligned with the positioning block, ensuring accurate and effective test data. The second locking mechanism stably fixes the indenter on the main board and abuts against the positioning block, ensuring that the indenter is in the designated position without deviation during indentation testing. This effectively improves the speed of switching the indenter's movement position, thereby increasing testing efficiency. Attached Figure Description

[0022] Figure 1 The three-dimensional quick-assembly clamp provided by this utility model Figure 1 At this point, the indentation tester is positioned above the quick-release fixture.

[0023] Figure 2 The three-dimensional quick-assembly clamp provided by this utility model Figure 2 At this point, the indentation tester has been placed in the designated position of the quick-release fixture.

[0024] Figure 3 The three-dimensional quick-assembly clamp provided by this utility model Figure 3 .

[0025] Figure 4 A cross-sectional view of the quick-assembly fixture provided by this utility model.

[0026] Figure 5 A partial three-dimensional view of the quick-assembly fixture provided by this utility model.

[0027] Figure 6 A perspective view of the locking mechanism provided by this utility model.

[0028] Figure 7 A cross-sectional view of the locking mechanism provided by this utility model.

[0029] Among them, 1-main board, 11-open slot, 12-slide groove, 121-open lower surface, 13-guide rail, 131-upper surface, 14-through groove, 15-through hole, 2-fixing mechanism, 21-cylindrical connecting rod, 3-positioning block, 31-first vertical positioning surface, 32-second vertical positioning surface, 33-third horizontal positioning surface, 34-fourth horizontal positioning surface, 35-fixing hole, 4-locking mechanism, 41-locking post, 42-locking block, 43-rotating shaft, 431-cylindrical boss, 44-eccentric cam, 441-through hole, 45-wrench, 5-indenter, 51-flange, 52-second locking mechanism, 521-locking eccentric wheel, 6-cross laser positioner. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.

[0031] like Figure 1 , Figure 2 As shown, a quick-release fixture for an indenter includes a main board 1, a fixing mechanism 2, a positioning block 3, and a locking mechanism 4. The main board 1 is a long plate-shaped structure with an open slot 11 and a sliding groove 12 communicating with it, cut out along its thickness. A guide rail 13 is provided on the main board 1 at positions corresponding to the open slot 11 and the sliding groove 12. The size and shape of the open slot 11 are adapted to the indenter 5. A positioning block 3 is provided within the sliding groove 12, and the positioning block 3 can move along the guide rail 13 within the sliding groove 12. A locking mechanism 4 is provided on opposite sides of the positioning block 3, passing through the sidewall of the main board 1 and connecting to the positioning block 3 to control the positioning block 3 to form a locked position and an unlocked position. The fixing mechanism 2 is connected to opposite sides of the main board 1, and this fixing mechanism 2 is used to achieve a detachable connection between the main board 1 and the metal object to be tested.

[0032] Specifically, the quick-release fixture is placed on the surface of the metal object to be tested and fixed in the target area by the fixing mechanism 2. The locking mechanism 4 is then adjusted to the unlocked state to release the locking of the positioning block 3, allowing the positioning block 3 to move along the guide rail 13 to the target position of the slide groove 12. Here, the target position refers to the position where the indentation depth needs to be measured. The locking mechanism 4 locks the positioning block 3, making it stably stay in the target position of the slide groove 12. Then, the indenter 5 is inserted from the open slot 11 and moved along the guide rail 13 into the slide groove 12. When the indenter 5 abuts against the positioning block 3, the indenter 5 will not move in the designated position, thus achieving the positioning of the indenter 5.

[0033] like Figure 3 As shown, the length direction of the main board 1 is the X-axis direction, the width direction is the Z-axis direction, and the thickness direction is the Y-axis direction. In this embodiment, the slide groove 12 extends along the X-axis direction, allowing the positioning block 3 to translate along the X-axis within the slide groove 12 and form a positioning fit in the Y-axis and Z-axis directions.

[0034] like Figures 4-7 As shown, steps are provided on both sides of the upper surface of the positioning block 3. Its vertical surface is the first vertical positioning surface 31, and its horizontal surface is the third horizontal positioning surface 33. The first vertical positioning surfaces 31 on both sides abut against the two sides of the slide groove 12, forming a limiting fit in the Z-axis direction; the third horizontal positioning surfaces 33 on both sides abut against the lower surface 121 of the opening on both sides of the slide groove 12, forming a limiting fit in the Y-axis direction.

[0035] Meanwhile, steps are also provided on both sides of the lower surface of the positioning block 3, with the vertical surface being the second vertical positioning surface 32 and the horizontal surface being the fourth horizontal positioning surface 34. The second vertical positioning surfaces 32 on both sides abut against the sides of the guide rails 13 on both sides, forming a limiting fit in the Z-axis direction; the fourth horizontal positioning surfaces 34 on both sides abut against the upper surface 131 of the guide rails 13 on both sides, forming a limiting fit in the Y-axis direction.

[0036] Since the fourth transverse positioning surface 34 of the positioning block 3 corresponds vertically to the third transverse positioning surface 33, the Y-axis movement range of the positioning block 3 is controlled between the slide groove 12 and the guide rail 13 through the bidirectional limiting of the lower surface 121 of the slide groove 12 opening and the upper surface 131 of the guide rail 13. That is, the stepped positioning surfaces of the upper and lower surfaces of the positioning block 3 are matched with the surface limiting of the slide groove 12 and the guide rail 13, so that the positioning block 3 can move along the X-axis direction in the slide groove 12 while forming a positioning fit in the Y and Z-axis directions, ensuring its positional stability when moving in the slide groove 12. This design allows for quick switching of target positions simply by moving the positioning block 3 along the slide groove 12. The overall structure is simple, reducing component manufacturing difficulty. It enables multi-point testing without disassembling the quick-release fixture. In contrast, traditional testing methods require completely separating the entire fixture from the metal object surface, realigning it, and clamping it for each target position change. This prolongs testing time, may damage the initial positioning of the fixture, and necessitates repeated clamping steps, leading to cumulative positioning errors and low testing efficiency. The quick-release fixture allows for multi-point testing with a single clamping, ensuring identical positioning for all target positions and guaranteeing data accuracy. It also eliminates the time spent clamping and disassembling the fixture during multi-point testing, significantly reducing the switching time between different points, improving testing efficiency, and enhancing testing continuity.

[0037] Based on this, the slide 12 can extend along the X-axis to form a first groove and extend along the Z-axis to form a second groove, that is, the slide 12 is cross-shaped, so that the movement range of the positioning block 3 is extended from the X-axis unidirectional to the X and Z axes bidirectionally, further improving the flexibility of target position selection. Of course, in other embodiments, the slide 12 can extend in any direction according to the actual detection requirements, such as in the shape of an X or a cross, and the specific extension direction is not limited.

[0038] In this embodiment, the guide rail 13 is located on opposite sides of the lower part of the slide groove 12 and the open slot 11, and is a boss parallel to the surface of the main board 1. The guide rail 13 guides the movement of the indenter 5 and the positioning block 3 within the slide groove 12; simultaneously, it supports the weight of the indenter 5 and the positioning block 3 in the Y-axis direction and restricts their movement in the Z-axis direction. This ensures that the indenter 5 and the positioning block 3 maintain a consistent positioning relationship during movement, reducing positioning errors between them, thereby guaranteeing the accuracy and effectiveness of the indenter 5 in detecting the specified position. Of course, in other embodiments, the structure of the guide rail 13 can also be other forms, and no specific limitation is imposed.

[0039] like Figure 4 , Figure 5As shown, locking mechanisms 4 are distributed on opposite sides of the positioning block 3, meaning there are at least two locking mechanisms 4. Each locking mechanism 4 has a locking pin 41, which slides into the through slots 14 on opposite sides of the main board 1, allowing the locking pin 41 to pass through the through slots 14 and connect to the fixing holes 35 on both sides of the positioning block 3. This prevents the locking pin 41 from moving along its own axial direction; that is, the locking pin 41 and the positioning block are fixedly connected without relative movement. A ring-shaped locking block 42 extends circumferentially along the axis of the locking pin 41. This locking block 42 is movably fitted onto the locking pin 41, allowing for a certain amount of movement along the axial direction of the locking pin 41 when not locked. A rotating shaft 43, adjacent to the locking block 42 and connected to the end of the locking pin 41, extends on opposite sides in a direction perpendicular to the axis of the locking pin 41, forming cylindrical bosses 431. These cylindrical bosses 431 engage with the through holes 441 on the eccentric cam 44, achieving a rotatable connection. A gripper 45 extends from the side of the eccentric cam 44. By moving the gripper 45, the eccentric cam 44 can be driven to make circular motion around the axis of the cylindrical boss 431 of the rotating shaft 43.

[0040] Specifically, when the positioning block 3 moves to the target position, the wrench 45 is rotated. Because the axis of the through hole 441 of the eccentric cam 44 is offset from the rotation center of the eccentric cam 44 by a certain distance, when the wrench 45 rotates towards the main board 1, it drives the eccentric cam 44 to make eccentric movements around the axis of the cylindrical boss 431. As the wrench 45 rotates, the contact surface between the transition arc of the eccentric cam 44 and the locking block 42 gradually increases, generating an axial thrust to squeeze the locking block 42, causing the locking block 42 to gradually approach the side wall of the main board 1. When the wrench 45 can no longer rotate towards the main board 1, the protruding arc of the eccentric cam 44 abuts against the locking block 42 and presses its end face tightly against the side wall of the main board 1, so that the positioning block 3 and the locking block 42 tightly clamp the side wall of the main board 1, thereby locking the positioning block 3 by the locking mechanism 4 and fixing the positioning block 3 in the target position.

[0041] When the inspection is complete and the positioning block 3 needs to be moved, the locking mechanism 4 unlocks the positioning block 3. At this time, the wrench 45 is rotated away from the main board 1, driving the convex arc of the eccentric cam 44 to gradually move away from the locking block 42, and the contact area between the two gradually decreases. At the same time, the end face of the locking block 42 gradually moves away from the side wall of the main board 1. When the wrench 45 is rotated to the initial position, the eccentric cam 44 and the locking block 42 are completely disengaged, so that the positioning block 3 and the locking block 42 are not in contact with the side wall of the main board 1, realizing the unlocking of the positioning block 3 by the locking mechanism 4, allowing the positioning block 3 to move along the slide 12 to the next target position. This structure utilizes the eccentric characteristics of the eccentric cam 44 to form a mechanical self-locking mechanism with the locking block 42, maintaining the locked state without additional external force, making the quick-release fixture structure compact. During operation, simply rotating the wrench 45 is enough to achieve the locking and unlocking of the positioning block 3, making the operation simple and quick, and improving the efficiency of locking and unlocking the positioning block 3.

[0042] A cross-shaped laser locator 6 is installed at the bottom of the positioning block 3, such as... Figure 6 As shown, the cross laser locator 6 moves with the positioning block 3, emitting two perpendicularly intersecting laser lines. When projected onto the surface of the metal object to be tested, a laser crosshair appears. Its specific function is existing technology and will not be elaborated further. Specifically, when the outer wall of the indenter 5 abuts against the outer surface of the positioning block 3, the indenter 5's indenter head is positioned on the crosshair projected by the cross laser locator 6, meaning the indenter 5 is at the designated position, allowing for detection at that position. This design, compared to traditional visual positioning, avoids the impact of human judgment errors on positioning accuracy, resulting in more precise detection data.

[0043] like Figure 1 , Figure 2 As shown, the fixing mechanism 2 is connected to the opposite sides of the main board 1 to realize the connection between the quick-release clamp and the metal object to be tested. In this embodiment, the fixing mechanism 2 is a magnetic switch, and its specific function is existing technology and will not be described in detail; of course, in other embodiments, it can also be composed of other structures, and there is no specific limitation. The fixing mechanism 2 is provided with a cylindrical connecting rod 21, which cooperates with the through holes 15 on both sides of the main board 1, so that the cylindrical connecting rod 21 of the fixing mechanism 2 passes through the through holes 15 of the main board 1, thereby connecting the two.

[0044] Specifically, during use, first keep the magnetic switch of the fixing mechanism 2 in the closed state. After placing the quick-release clamp on the target area of ​​the metal object to be tested, turn on the magnetic switch of the fixing mechanism 2 to enable the fixing mechanism 2 to have an adsorption function, allowing the quick-release clamp to be stably adsorbed on the surface of the metal object to be tested. When it is necessary to change the target area, the magnetic attraction of either side of the fixing mechanism 2 can be turned off, causing the through hole 15 of the main board 1 to move circumferentially around the cylindrical connecting rod 21 of the fixing mechanism 2. This, in turn, causes the quick-release clamp to move circumferentially around the cylindrical connecting rod 21 of the fixing mechanism 2, changing the position of the quick-release clamp and enabling the target area to be changed for testing.

[0045] The structure consists of two sets of fixing mechanisms 2 symmetrically connected to both sides of the main board 1, which generates a balanced adsorption force and avoids the base tilting or shifting caused by uneven force due to single magnetic attraction, making the detection data more accurate. At the same time, the fixing mechanism 2 uses magnetic attraction to adsorb the metal object to be tested without causing wear on its surface, and by closing the magnetic attraction on one side, the quick-release fixture can be quickly replaced to change the target area, making the detection range more comprehensive, the operation more convenient and flexible, and greatly improving the detection efficiency.

[0046] An indentation testing device includes an indenter 5 and the quick-release fixture described above.

[0047] like Figure 1As shown, the outer wall of the indenter 5 is symmetrically provided with flanges 51. The flanges 51 can move along the guide rail 13 in the slide groove 12. On the opposite sides of the outer wall of the indenter 5 above the flanges 51, there are second locking mechanisms 52, which include locking eccentric wheels 521. The locking eccentric wheels 521 rotate toward the direction of the positioning block 3, so that the indenter 5 can be firmly locked in the designated position.

[0048] Specifically, with the quick-release fixture fixed to the metal surface to be tested and the positioning block 3 in the locked state, the indenter 5 is inserted into the quick-release fixture from the open slot 11, so that the bottom surface of the flange 51 of the indenter 5 is in contact with the upper surface of the guide rail 13; then the flange 51 of the indenter 5 moves along the guide rail 13 towards the slide groove 12, as... Figure 2 As shown, the outer wall of the indenter 5 is brought close to the side of the positioning block 3 until the outer wall of the indenter 5 abuts against the side of the positioning block 3. At this time, the axis of the indenter 5's indenter head is completely aligned with the center of the crosshair projected by the cross laser positioning device 6. Simultaneously, the second locking mechanism 52 is driven, causing the locking eccentric wheel 521 to rotate in the direction of the positioning block 3. When the locking eccentric wheel 521 rotates to its limit position, its outer surface presses tightly against the upper surface of the main board 1 to form a self-lock. At this time, the second locking mechanism 52 locks the indenter 5 onto the main board 1. Due to the circumferential thrust generated by the rotation of the locking eccentric wheel 521, the outer wall of the indenter 5 continuously moves towards the side of the positioning block 3 during the locking process, thereby eliminating the assembly gap between the outer wall of the indenter 5 and the side of the positioning block 3. This ensures that no positioning deviation occurs when the second locking mechanism 52 locks the indenter 5, thus ensuring that the indenter 5 has no deviation at the specified position during indentation detection.

[0049] When the next point needs to be tested, the second locking mechanism 52 is driven, causing the locking eccentric wheel 521 to rotate away from the positioning block 3. At this time, the outer surface of the locking eccentric wheel 521 gradually moves away from the upper surface of the main board 1. When it rotates to the initial position, the outer surface of the locking eccentric wheel 521 disengages from the upper surface of the main board 1, allowing the second locking mechanism 52 to unlock the indenter 5. At this time, the indenter 5 can move again along the guide rail 13 in the slide groove 12, repeating the above operation steps, thereby realizing multi-point detection. In this detection method, the indenter 5 does not need to be taken out of the quick-release fixture. It only needs to move along the slide groove 12 and cooperate with the positioning block 3 to complete the detection of the indentation depth, which effectively improves the switching speed of the indenter's movement position, thereby improving the detection efficiency. At the same time, the flange of the indenter cooperates with the slide groove and guide rail, and is consistent with the positioning of the positioning block, ensuring that the detection data is accurate and effective.

[0050] The above specific embodiments are used to explain and illustrate the present utility model, and are not intended to limit the present utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims shall fall within the protection scope of the present utility model.

Claims

1. A quick mount fixture for use in an indenter, characterized by, include: The motherboard (1) has an open slot (11), a slide groove (12) connected to the open slot (11), and a guide rail (13) corresponding to the open slot (11) and the slide groove (12). The indenter (5) can extend into the open slot (11) and move along the guide rail (13) in the slide groove (12). The fixing mechanism (2) is connected to the opposite sides of the main board (1) and is used for a detachable connection between the main board (1) and the object under test; The positioning block (3) can move along the guide rail (13) in the slide groove (12) and form the locking position and unlocking position of the positioning block (3) through the locking mechanism (4); The locking mechanism (4) unlocks the positioning block (3), and the positioning block (3) can move along the guide rail (13) to the target position of the slide groove (12). The locking mechanism (4) locks the positioning block (3), and the positioning block (3) can stay at the target position of the slide groove (12). The indenter (5) moves along the guide rail (13) in the slide groove (12) until it abuts against the positioning block (3), thus realizing the positioning of the indenter (5).

2. The quick-mount clamp of claim 1, wherein: The groove (12) extends along the X-axis direction, and the positioning block (3) can translate in the X-axis direction to form a positioning fit in the Y-axis and Z-axis directions.

3. The quick-release clamp according to claim 1 or 2, characterized in that: The positioning block (3) has a first vertical positioning surface (31) that can abut against the side of the slide groove (12), a second vertical positioning surface (32) that can abut against the side of the guide rail (13), and a third horizontal positioning surface (33) and a fourth horizontal positioning surface (34) that are opposite each other. The third horizontal positioning surface (33) abuts against the lower surface (121) of the opening of the slide groove (12), and the fourth horizontal positioning surface (34) abuts against the upper surface (131) of the guide rail (13).

4. The quick-release clamp according to claim 1, characterized in that: The guide rail (13) is a boss located on both sides of the lower part of the slide groove (12) and the open slot (11).

5. The quick-release clamp according to claim 1, characterized in that: The number of locking mechanisms (4) is at least two, which are respectively located on opposite sides of the positioning block (3). The locking mechanism (4) includes a locking pin (41), a locking block (42) movably sleeved on the outside of the locking pin (41), a rotating shaft (43) connected to the end of the locking pin (41), an eccentric cam (44) rotatably connected to the rotating shaft (43), and a wrench (45) connected to the eccentric cam (44). The locking pin (41) passes through the through groove (14) of the main board (1) and is connected to the positioning block (3).

6. The quick-release clamp according to claim 1, characterized in that: The groove (12) extends along the length direction of the main board (1); or, the groove (12) includes a first groove extending along the length direction of the main board (1) and a second groove extending along the width direction of the main board (1).

7. The quick-release clamp according to claim 1, characterized in that: The fixing mechanism (2) is a magnetic switch, which can magnetically attract or de-attract the metal object to be tested.

8. The quick-release clamp according to claim 1, characterized in that: The positioning block (3) is connected to a cross laser positioner (6).

9. An indentation testing device, characterized in that: It includes an indenter (5) and a quick-release fixture as described in any one of claims 1-8.

10. The indentation testing device according to claim 9, characterized in that: The outer wall of the indenter (5) is provided with a flange (51), which moves along the guide rail (13) in the groove (12); the outer wall of the indenter (5) and above the flange (51) are provided with a second locking mechanism (52), which includes a locking eccentric wheel (521), which rotates and locks in the direction of the positioning block (3).

Images