Workpiece mechanical property test fixture

Abstract

The utility model discloses a mechanical property test fixture for a workpiece, which relates to the technical field of mechanical property test, and comprises a first pull block and a second pull block, the first pull block and the second pull block are respectively provided with a first arc groove and a limit groove; a first movable seat and a second movable seat are movably arranged in the first pull block and the second pull block correspondingly, clamping blocks used for clamping a workpiece body are arranged on the first movable seat and the second movable seat correspondingly, and a locking mechanism used for limiting the second movable seat is arranged at one end of the first pull block. According to the utility model, by adjusting the locking or unlocking state of the locking mechanism to the second movable seat and combining the arc rotation of the first movable seat, two mechanical property tests of shearing and stretching can be completed without replacing the clamp body, so that the universality of equipment is obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mechanical property test, especially to a workpiece mechanical property test fixture. BACKGROUND

[0002] Workpiece mechanical property test is the core technology in the field of material science and engineering, which aims to evaluate the mechanical behavior (such as strength, toughness, durability, etc.) of materials or components under different load conditions through standardized test methods. Typical tests include tensile test (to determine tensile strength, yield strength, etc.), shear test (to evaluate shear resistance), compression test, and fatigue test, etc.

[0003] In the prior art (publication number CN222299345U, name of a metal mechanical property testing machine fixture), two supports are fixedly installed on the top side of the base, a bidirectional screw rod adjusting structure is arranged on the two supports, and two T-shaped moving seats are arranged on the bidirectional screw rod adjusting structure. The utility model has the advantages that: through the cooperation of the bidirectional screw rod adjusting structure, the T-shaped moving seat, the workpiece lifting structure, the first supporting plate, the second supporting plate, the fixing bolt, the rotating disc, the fixed jack, the first clamping block, the second clamping block, the pressing hole and the pressing groove, the first clamping block and the second clamping block with appropriate sizes can be selected according to the shape and size of the workpiece, so that the fixture can clamp cylindrical and rectangular metal materials of different sizes, thereby expanding the application range of the fixture and improving the practicality and structural flexibility of the fixture.

[0004] The existing fixture can usually only realize single test of shear force or tensile force. If the test mode needs to be switched, the entire fixture needs to be replaced or a complex conversion device needs to be added, which is complicated to operate and high in cost. For advanced materials such as metal-based ceramic composite materials, multi-dimensional characterization (such as shear strength and tensile strength) of the interfacial bonding force is the key to evaluating the material performance. However, the existing fixture cannot complete the test of the two load modes on the same device, resulting in low test efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a workpiece mechanical property test fixture, which can complete shear and tensile mechanical property tests by only adjusting the structure without replacing the fixture, thereby reducing the test cost and significantly improving the equipment versatility and test efficiency.

[0006] The utility model provides a workpiece mechanical property test anchor clamps, including first pull block and second pull block, is set up first circular arc groove and limit groove respectively on first pull block and second pull block, first movable seat and second movable seat are movably arranged in first pull block and second pull block respectively, the clamping block for clamping workpiece body is arranged on first movable seat and second movable seat, first pull block one end is provided with the locking mechanism for the limit of second movable seat.

[0007] Preferably, the first pull block and the second pull block are respectively provided with a first connecting block and a second connecting block on the side away from each other.

[0008] Preferably, the first movable seat is provided with a second circular arc groove, the second circular arc groove and the first circular arc groove are provided with a limiting rod, and the limiting rod is slidably connected with the inner wall of the second circular arc groove and the first circular arc groove.

[0009] Preferably, the first movable seat and the second movable seat are provided with a guide groove on one side, the guide groove is slidably connected with a guide block, and the guide block is fixedly connected with one end of the clamping block.

[0010] Preferably, the first movable seat and the second movable seat are provided with an installation rod inside one end, the clamping block is slidably connected with the installation rod, the installation rod is provided with a screw rod at both ends, the screw rod is threadedly connected with a sleeve, and the sleeve is abutted on one side of the clamping block.

[0011] Preferably, the second movable seat is rotatably installed on a rotating rod, the rotating rod is fixedly connected with a limiting sliding block at both ends, and the limiting sliding block is slidably connected in the limiting groove.

[0012] Preferably, the second movable seat is fixedly connected with a protrusion at one end, the locking mechanism comprises a fixed sleeve, the fixed sleeve is fixedly installed inside one end of the second pull block, a supporting rod is provided inside the fixed sleeve, and the supporting rod is fixedly connected with a pull ring and a stop block at both ends.

[0013] Preferably, the stop block is abutted with the protrusion, a spring is sleeved on the supporting rod, and the spring is fixedly connected with the stop block and the fixed sleeve at both ends.

[0014] Preferably, the first pull block and the second pull block are provided with a fixing frame outside, the fixing frame is slidably connected with a mounting seat at both ends inside, and the first connecting block and the second connecting block are fixedly installed on the mounting seat at both ends.

[0015] Preferably, the fixing frame is rotatably connected with a bidirectional screw rod on one side inside, and the other side is fixedly connected with a sliding rod, the bidirectional screw rod and the sliding rod are both sleeved with a limiting block, the limiting block is fixedly connected with the mounting seat, and the top end of the bidirectional screw rod is fixedly connected with a handle.

[0016] The utility model discloses an embodiment provides a work piece mechanical property test fixture, and compared with prior art,

[0017] 1, the utility model discloses when carrying out shear force measurement, the stopper is against the lobe, avoids the rotation of lobe and second movable seat, rotates the work piece body one end through first movable seat, realizes shear force measurement, when carrying out tensile force measurement, the spring is compressed to the outward pull of pull ring, and the stopper moves to the one side of lobe, when the first pull block and second pull block are pulled outward simultaneously, second movable seat rotates, and make the limiting slide block slide in the limiting groove, until the work piece body is in the vertical state, and the tensile force test of work piece body is realized through the pull of first clamping block and second pull block.

[0018] 2, the utility model discloses the locking or unlocking state of second movable seat through the adjustment locking mechanism, and the arc rotation of first movable seat is combined, need not to change fixture body, can complete shear and tensile two kinds of mechanical property test, and the equipment versatility is improved significantly. ACCURACY

[0019] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment needed to use the drawing briefly introduced, it should be understood that the following drawing only shows some embodiments of the utility model, therefore should not be seen as the limitation to the range, for ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0020] Figure 1 It is the overall structure schematic diagram under the shear force measurement state of the embodiment of the utility model;

[0021] Figure 2 It is the internal structure schematic diagram under the shear force measurement state of the embodiment of the utility model;

[0022] Figure 3 It is the side view structure schematic diagram under the shear force measurement state of the embodiment of the utility model;

[0023] Figure 4 It is the Figure 3 A-A section three-dimensional structure schematic diagram of the embodiment of the utility model;

[0024] Figure 5 It is the Figure 4 B place structure enlarged view of the embodiment of the utility model;

[0025] Figure 6 It is the overall structure schematic diagram under the tensile force measurement state of the embodiment of the utility model;

[0026] Figure 7 It is the partial sectional structure schematic diagram under the tensile force measurement state of the embodiment of the utility model;

[0027] Figure 8 The fixed frame, the first pulling block and the second pulling block of the embodiment of the utility model are assembled as shown in the figure.

[0028] Figure 9 The fixed frame, the first pulling block and the second pulling block of the embodiment of the utility model are assembled as shown in the figure.

[0029] Reference signs:

[0030] 1, first pulling block; 11, first circular arc groove; 12, first connecting block; 2, second pulling block; 21, limiting groove; 22, second connecting block; 3, first movable seat; 31, second circular arc groove; 32, limiting rod; 33, clamping block; 34, screw sleeve; 35, mounting rod; 36, screw rod; 37, guide block; 38, guide groove; 4, second movable seat; 41, protruding block; 42, limiting sliding block; 43, rotating rod; 5, locking mechanism; 51, supporting rod; 52, pull ring; 53, fixed sleeve; 54, spring; 55, stop block; 6, workpiece body; 7, fixed frame; 71, mounting seat; 72, handle; 73, bidirectional screw; 74, sliding rod; 75, limiting block. DETAILED DESCRIPTION

[0031] Some embodiments of the utility model will be described in detail below with reference to the drawings. In the case of no conflict, the following examples and features in the examples can be combined with each other.

[0032] Please refer to Figures 1-9 The embodiment of the utility model provides a workpiece mechanical property test fixture, including first pulling block 1 and second pulling block 2, first pulling block 1 and second pulling block 2 are set up with first circular arc groove 11 and limiting groove 21 respectively, first movable seat 3 and second movable seat 4 are movably arranged in first pulling block 1 and second pulling block 2 respectively, first movable seat 3 and second movable seat 4 are all provided with clamping block 33 for clamping workpiece body 6, first pulling block 1 one end is provided with locking mechanism 5 for limiting second movable seat 4.

[0033] First circular arc groove 11 and second circular arc groove 31 are all one fourth groove, limiting rod 32 can rotate in first circular arc groove 11 and second circular arc groove 31, make first movable seat 3 rotate, realize the angle change when shearing force test, locking mechanism 5 restricts the rotation of second movable seat 4, only in the test tensile force is unlocked, allow second movable seat 4 to rotate.

[0034] The side of first pulling block 1 and second pulling block 2 away from each other is provided with first connecting block 12 and second connecting block 22 respectively, second circular arc groove 31 is set up in first movable seat 3, limiting rod 32 is set up in second circular arc groove 31 and first circular arc groove 11, limiting rod 32 and second circular arc groove 31 and first circular arc groove 11 inner wall are slidably connected.

[0035] The first arc groove 11 and the second arc groove 31 are in sliding fit with the limiting rod 32, so that the first movable seat 3 is accurately rotated, the jamming is avoided, and the angle stability of the shear force test is ensured.

[0036] The first movable seat 3 and the second movable seat 4 are each provided with a guide groove 38 on one side, a guide block 37 is slidably connected in the guide groove 38, the guide block 37 is fixedly connected to one end of the clamping block 33, a mounting rod 35 is fixedly installed in the first movable seat 3 and the second movable seat 4 on one end, the clamping block 33 is slidably connected to the mounting rod 35, a screw rod 36 is arranged at two ends of the mounting rod 35, a screw sleeve 34 is threadedly connected to the screw rod 36, and the screw sleeve 34 is abutted to one side of the clamping block 33.

[0037] The workpiece body 6 is placed between the two clamping blocks 33, the clamping blocks 33 are moved close to each other by rotating the screw sleeve 34, the workpiece body 6 is clamped, the clamping blocks 33 are ensured to move in parallel by the sliding fit of the guide block 37 and the guide groove 38, the clamping is avoided to be inclined, and the measurement accuracy is improved.

[0038] The second movable seat 4 is rotatably installed on a rotating rod 43, limiting sliding blocks 42 are fixedly connected to two ends of the rotating rod 43, the limiting sliding blocks 42 are slidably connected in the limiting groove 21, a protruding block 41 is fixedly connected to one end of the second movable seat 4, the locking mechanism 5 comprises a fixed sleeve 53, the fixed sleeve 53 is fixedly installed in the inside of one end of the second pulling block 2, a supporting rod 51 is penetratingly arranged in the inside of the fixed sleeve 53, a pull ring 52 and a blocking block 55 are respectively fixedly connected to two ends of the supporting rod 51, the blocking block 55 is abutted to the protruding block 41, a spring 54 is sleeved on the supporting rod 51, and two ends of the spring 54 are respectively fixedly connected to the blocking block 55 and the fixed sleeve 53.

[0039] When the shear force is measured, the blocking block 55 is abutted to the protruding block 41, the protruding block 41 and the second movable seat 4 are avoided to be rotated, one end of the workpiece body 6 is rotated by the first movable seat 3, and the shear force measurement is realized, when the tensile force is measured, the pull ring 52 is pulled outward to compress the spring 54, the blocking block 55 is moved to one side of the protruding block 41, the second movable seat 4 is rotated, and the limiting sliding block 42 is slid in the limiting groove 21 when the first pulling block 1 and the second pulling block 2 are simultaneously pulled outward, until the workpiece body 6 is in a vertical state, the tensile force test of the workpiece body 6 is realized by pulling the first clamping block and the second pulling block 2.

[0040] When the interface bonding force of the metal-based ceramic composite material is tested, the composite material sample is clamped in the clamping block 33, the locking mechanism 5 locks the second movable seat 4, the first pulling block 1 and the second pulling block 2 are pulled, the first movable seat 3 is rotated, the shear load is applied to the interface, until the interface fails, the shear strength is recorded, the locking mechanism 5 is unlocked, the sample is vertically clamped, the first pulling block 1 and the second pulling block 2 are pulled, the interface bears the axial tensile load, and the tensile strength is measured.

[0041] By the above technical solution, the two mechanical property tests of shearing and stretching can be completed by only mechanical structure transformation without replacing the fixture body, and the universality of the equipment is significantly improved.

[0042] The first pulling block 1 and the second pulling block 2 are externally provided with a fixing frame 7, the fixing frame 7 is internally slidably connected with mounting seats 71 at both ends, the first connecting block 12 and the second connecting block 22 are fixedly installed on the mounting seats 71 at both ends respectively, the fixing frame 7 is internally rotatably connected with a bidirectional screw 73 at one side, and is fixedly connected with a sliding rod 74 at the other side, the bidirectional screw 73 and the sliding rod 74 are both sleeved with limiting blocks 75, the limiting blocks 75 are fixedly connected with the mounting seats 71, and the bidirectional screw 73 is fixedly connected with a handle 72 at the top end.

[0043] The handle 72 is rotated to drive the bidirectional screw 73 to rotate, the limiting blocks 75 are driven to move reversely at both the upper end and the lower end, the sliding rod 74 provides guidance to ensure stable movement, synchronous driving of the first pulling block 1 and the second pulling block 2 is realized, and eccentric error in the test is avoided.

[0044] To sum up, the working principle of the workpiece mechanical property test fixture in the embodiment of the utility model is as follows: the workpiece body 6 is placed between the two clamping blocks 33, the clamping blocks 33 clamp the workpiece body 6 by rotating the screw sleeves 34, when the shearing force is measured, the locking of the stop block 55 to the protruding block 41 is maintained, the first pulling block 1 and the second pulling block 2 are pulled, the first movable seat 3 is rotated, when cracks or fractures appear on the surface of the workpiece, the shearing strength is recorded, and the shearing force measurement is realized, when the tensile force measurement is performed, the pull ring 52 is pulled outward to compress the spring 54, the stop block 55 is moved to one side of the protruding block 41, when the first pulling block 1 and the second pulling block 2 are simultaneously pulled outward, the second movable seat 4 is rotated, the limiting sliding block 42 is slid in the limiting groove 21, and the workpiece body 6 is in a vertical state, the tensile force test of the workpiece body 6 is realized by pulling the first clamping block and the second clamping block 2.

[0045] The above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, and the utility model can have various changes and changes for the person skilled in the art. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection range of the utility model.

Claims

1. A mechanical properties testing fixture for a workpiece comprising a first pull block (1) and a second pull block (2), characterised in that: The first pull block (1) and the second pull block (2) are provided with a first circular arc groove (11) and a limiting groove (21) respectively, the first pull block (1) and the second pull block (2) are movably provided with a first movable seat (3) and a second movable seat (4) respectively, the first movable seat (3) and the second movable seat (4) are provided with a clamping block (33) for clamping the workpiece body (6), and the first pull block (1) is provided with a locking mechanism (5) at one end for limiting the second movable seat (4).

2. The workpiece mechanical property testing fixture of claim 1, wherein: The first pull block (1) and the second pull block (2) are provided with a first connecting block (12) and a second connecting block (22) respectively on the side away from each other.

3. The mechanical property testing fixture of claim 1, wherein: The first movable seat (3) is provided with a second circular arc groove (31), the second circular arc groove (31) and the first circular arc groove (11) are provided with a limiting rod (32) penetratingly, and the limiting rod (32) is slidably connected with the inner walls of the second circular arc groove (31) and the first circular arc groove (11).

4. The mechanical property testing fixture of claim 1, wherein: The first movable seat (3) and the second movable seat (4) are provided with a guide groove (38) on one side, the guide groove (38) is slidably connected with a guide block (37), and the guide block (37) is fixedly connected with one end of the clamping block (33).

5. The mechanical property testing fixture of claim 4, wherein: The first movable seat (3) and the second movable seat (4) are provided with a guide groove (38) on one side, the guide groove (38) is slidably connected with a guide block (37), and the guide block (37) is fixedly connected with one end of the clamping block (33).

6. The mechanical property testing fixture of claim 1, wherein: The first movable seat (3) and the second movable seat (4) are provided with a guide groove (38) on one side, the guide groove (38) is slidably connected with a guide block (37), and the guide block (37) is fixedly connected with one end of the clamping block (33).

7. The mechanical property testing fixture of claim 1, wherein: The second movable seat (4) is rotatably connected with a rotating rod (43), the rotating rod (43) is fixedly connected with a limiting sliding block (42) at both ends, and the limiting sliding block (42) is slidably connected with the limiting groove (21).

8. The mechanical property testing fixture of claim 7, wherein: The second movable seat (4) is rotatably connected with a rotating rod (43), the rotating rod (43) is fixedly connected with a limiting sliding block (42) at both ends, and the limiting sliding block (42) is slidably connected with the limiting groove (21).

9. The mechanical property testing fixture of claim 2 wherein: The second movable seat (4) is rotatably connected with a rotating rod (43), the rotating rod (43) is fixedly connected with a limiting sliding block (42) at both ends, and the limiting sliding block (42) is slidably connected with the limiting groove (21).

10. The mechanical property testing fixture of claim 9, wherein: The second movable seat (4) is rotatably connected with a rotating rod (43), the rotating rod (43) is fixedly connected with a limiting sliding block (42) at both ends, and the limiting sliding block (42) is slidably connected with the limiting groove (21). The first pull block (1) and the second pull block (2) are provided with a fixed frame (7) outside, the fixed frame (7) is internally provided with a mounting seat (71) slidably connected at both ends, and the first connecting block (12) and the second connecting block (22) are fixedly mounted on the mounting seat (71) at both ends respectively. The fixed frame (7) is internally rotatably connected with a bidirectional screw (73) on one side and fixedly connected with a sliding rod (74) on the other side, the bidirectional screw (73) and the sliding rod (74) are both sleeved with a limiting block (75), the limiting block (75) is fixedly connected with the mounting seat (71), and the top end of the bidirectional screw (73) is fixedly connected with a handle (72).

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