A clamping tool applied to bending performance detection of engineering components

Abstract

The utility model relates to a kind of applied engineering component bending performance detection clamping tool, including detection table, and the both ends of detection table are respectively set positioning support, and the top of positioning support is set as inclined plane, and the both sides of the top of positioning support are respectively movably provided with compression block, and one end of compression block is provided with pressure groove, and two compression blocks are driven displacement by displacement component being set in the inside of positioning support, and displacement component includes movable block, two-way screw rod, guide rod and knob;Two ends in the inside of positioning support are respectively provided with accommodating cavity, movable block is set in accommodating cavity, guide rod is set on movable block in penetration, guide rod upper end is connected with the bottom of compression block perpendicularly, spring is provided on the lower end of guide rod, so that compression block is tightly attached to the top of positioning support;Two-way screw rod is transversely penetrated through two accommodating cavities and is screw-connected with two movable blocks, and by rotating knob, movable block is displaced in opposite direction and realizes the adjustment of the distance between two compression blocks, and the bending performance detection needs of different length-width size test piece are satisfied.

Description

Technical Field

[0001] This utility model relates to the field of testing clamping fixture technology, and in particular to a clamping fixture for testing the bending performance of engineering components. Background Technology

[0002] Bending tests are widely used in the process control and quality inspection of engineering components. The core of this test lies in simulating the flexural stress state that a component might experience in actual service by applying bending loads, thereby assessing its resistance to plastic deformation, cracking, or fracture, and revealing potential defects inside or on the surface of the material. When the test object is a flat or simple-shaped component, standard fixtures can usually hold it stably and effectively transfer the load. However, for curved components with complex surfaces (such as arched supports, bent pipes, curved shells, etc.), conventional straight clamping devices are inadequate. After the curved component is bent under stress, its ends tilt upwards due to the leverage effect, resulting in fewer contact points with the fixture, a sharp concentration of stress, or even complete disengagement from the clamping area, making effective positioning impossible. Therefore, designing a bending test fixture for curved components is crucial to address these issues. Utility Model Content

[0003] To address the aforementioned problems, this utility model discloses a clamping fixture for testing the bending performance of engineering components, which solves the problem that existing clamping fixtures cannot effectively position curved components.

[0004] The specific technical solution is as follows:

[0005] A clamping fixture for testing the bending performance of engineering components includes a testing platform. Positioning supports for supporting both ends of the test piece are symmetrically arranged at both ends of the testing platform. The top of the positioning supports is inclined. A clamping block is movably provided on each side of the top of the positioning support. Each of the two clamping blocks has a pressure groove at one adjacent end for positioning one end of the arc-shaped component. The two clamping blocks are driven to move by a displacement component set inside the positioning support.

[0006] The displacement assembly includes a movable block, a bidirectional lead screw, a guide rod, and a knob. The positioning support has a receiving cavity at each of its two ends, and a movable block is installed in each cavity. The movable block's sides are fitted against the side walls of the receiving cavity. A guide rod is threaded through the movable block. The top of the positioning support has a horizontally opening for the upper end of the guide rod to pass through, and the upper end of the guide rod is vertically connected to the bottom of the clamping block. A spring is fitted onto the lower end of the guide rod, with the upper end of the spring pressing against the bottom of the movable block. The lower end of the spring is supported by a limiting block located at the bottom of the guide rod, ensuring the clamping block is tightly against the top of the positioning support.

[0007] The bidirectional lead screw passes through the two accommodating cavities laterally and is threadedly connected to the two movable blocks. The threads at both ends of the bidirectional lead screw are in opposite directions, so that the two movable blocks move in opposite directions under the action of the threads. The two ends of the bidirectional lead screw are respectively rotatably mounted on the side walls of the positioning support. A knob is provided at one end of the bidirectional lead screw. By rotating the knob, the movable blocks are displaced in opposite directions, and the distance between the two clamping blocks is adjusted.

[0008] Furthermore, a guide rod is provided through each side of each movable block, with the two guide rods distributed on both sides of the bidirectional lead screw.

[0009] Furthermore, the two accommodating cavities are separated by a partition block, and the bidirectional lead screw passes horizontally through the partition block and is rotatably connected to it via a bushing.

[0010] Furthermore, a side plate is provided at the lower end of one side of the positioning support, and the side plate is connected and fixed to the testing table by fasteners.

[0011] Furthermore, the testing platform has several sets of positioning screw holes laterally opened at both ends for cooperating with the fasteners on the side plate.

[0012] Furthermore, all the pressing grooves are rectangular in shape, and one end of the top of the pressing groove is chamfered.

[0013] The beneficial effects of this utility model are reflected in:

[0014] (1) In this utility model, the clamping blocks on both sides of the top of the positioning support clamp and position one end of the test piece to prevent the test piece from slipping during the bending process. The clamping blocks are elastically connected to the positioning support through the guide rod, so that the clamping blocks can be raised as the two ends of the test piece are raised, so that the clamping blocks can stick tightly to the test piece and maintain the positioning effect.

[0015] (2) The position of the positioning support on the test table in this utility model can be adjusted, and the distance between the two clamping blocks can be adjusted by rotating the knob, so as to meet the bending performance test requirements of test pieces with different length and width dimensions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a top view of the present invention.

[0018] Figure 3 This is a side sectional view of the positioning support in this utility model.

[0019] Figure 4 for Figure 3 Sectional view along the AA direction.

[0020] Explanation of reference numerals in the attached drawings: 1. Inspection table, 11. Positioning screw hole, 2. Positioning support, 31. Accommodating cavity, 32. Slide opening, 33. Separator block, 34. Side plate, 4. Pressing block, 41. Pressing groove, 5. Movable block, 51. Two-way lead screw, 6. Guide rod, 61. Limiting block, 7. Spring, 8. Knob, 9. Arc-shaped workpiece. Detailed Implementation

[0021] To make the technical solution of this utility model clearer and more explicit, the utility model will be further described below with reference to the accompanying drawings. Any solution derived by equivalent substitution and conventional reasoning of the technical features of this utility model falls within the protection scope of this utility model. The fixed connections and fixed settings mentioned in this utility model are all common connection methods in the mechanical field, including welding, bolt and nut connections, and screw connections.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Please see the appendix Figure 1-4 This embodiment provides a clamping fixture for testing the bending performance of engineering components, including a testing platform 1. Positioning supports 2 are symmetrically arranged at both ends of the testing platform 1 to support the two ends of the test piece. The top of each positioning support 2 is inclined, and a clamping block 4 is movably mounted on each side of the top of the positioning support 2. Each clamping block 4 has a pressure groove 41 at one adjacent end for positioning one end of the curved component. The pressure grooves 41 are rectangular, and one end of the pressure groove 41 is chamfered to facilitate pressing onto the test piece. The two clamping blocks 4 are driven to move by a displacement component located inside the positioning supports 2.

[0024] The displacement assembly includes a movable block 5, a bidirectional lead screw 51, a guide rod 6, and a knob 8. The positioning support 2 has a receiving cavity 31 at each end, and a movable block 5 is installed in each receiving cavity 31. The movable block 5 is fitted against the side walls of the receiving cavity 31 on both sides. Two guide rods 6 are threaded through each movable block 5. Two horizontal sliding openings 32 are opened at the top of the positioning support 2 for the upper ends of the guide rods 6 to pass through. The sliding openings 32 communicate with the receiving cavity 31 and are distributed left and right. The upper end of the guide rod 6 is vertically connected to the bottom of the clamping block 4. A spring 7 is sleeved on the lower end of the guide rod 6. The upper end of the spring 7 presses against the bottom of the movable block 5, and the lower end of the spring 7 is supported by a limiting block 61 located at the bottom of the guide rod 6, ensuring that the clamping block 4 is tightly pressed against the top of the positioning support 2. When the clamping block 4 is subjected to the lifting force of the test piece, it tilts and rises upward under the guidance of the guide rod 6 to adapt to the lifting direction of the end of the test piece.

[0025] The bidirectional lead screw 51 passes laterally through the two accommodating cavities 31 and horizontally through the two movable blocks 5. The bidirectional lead screw 51 is located between the two guide rods 6. The two ends of the bidirectional lead screw 51 are threadedly connected to the two movable blocks 5 respectively. The threads at the two ends of the bidirectional lead screw 51 are in opposite directions, so that the two movable blocks 5 move in opposite directions under the action of the threads. The two ends of the bidirectional lead screw 51 are rotatably mounted on the side walls at both ends of the positioning support 2. A knob 8 is provided at one end of the bidirectional lead screw 51. By rotating the knob 8, the movable blocks 5 are displaced in opposite directions, thereby adjusting the distance between the two clamping blocks 4.

[0026] In this embodiment, the two accommodating cavities 31 are separated by a partition block 33, and the bidirectional lead screw 51 passes horizontally through the partition block 33 and is rotatably connected to it via a bushing.

[0027] In this embodiment, a side plate 34 is provided at the lower end of one side of the positioning support 2. The side plate 34 is connected and fixed to the detection table 1 by fasteners. Several sets of positioning screw holes 11 are opened laterally at both ends of the detection table 1 for cooperating with the fasteners on the side plate 34. Thus, the distance between the two positioning supports 2 can be adjusted by fasteners.

[0028] When clamping and fixing this utility model clamping fixture, first rotate knob 8 to move the two clamping blocks 4 towards the edge. Then, place both ends of the arc-shaped workpiece 9 on the two positioning supports 2. Then, rotate the two knobs 8 in opposite directions to clamp and position one end of the arc-shaped workpiece 9 through the pressure groove 41. During the bending test, the middle of the arc-shaped workpiece 9 is bent by force, and its two ends are raised upward. During this process, the clamping block 4 is lifted along the upward direction of the end of the arc-shaped workpiece 9, thereby ensuring that the clamping block 4 always fits against the arc-shaped workpiece 9, maintaining its positioning and preventing slippage.

[0029] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A clamping fixture for testing the bending performance of engineering components, comprising a testing table (1), wherein positioning supports (2) for supporting both ends of the test piece are symmetrically arranged at both ends of the testing table (1), characterized in that, The top of the positioning support (2) is inclined. A clamping block (4) is movably provided on each side of the top of the positioning support (2). Each of the two clamping blocks (4) has a pressure groove (41) at one end of its adjacent side and is used to position one end of the arc-shaped component. The two clamping blocks (4) are driven to move by a displacement component provided inside the positioning support (2). The displacement component includes a movable block (5), a two-way lead screw (51), a guide rod (6), and a knob (8). Each end of the positioning support (2) is provided with a receiving cavity (31). A movable block (5) is provided in each receiving cavity (31). The two sides of the movable block (5) are fitted against the side walls of the receiving cavity (31). A guide rod (6) is provided through the movable block (5). A sliding opening (32) is opened laterally on the top of the positioning support (2) for the upper end of the guide rod (6) to pass through. The upper end of the guide rod (6) is vertical. The bottom of the clamping block (4) is connected, and the lower end of the guide rod (6) is fitted with a spring (7). The upper end of the spring (7) presses against the bottom of the movable block (5). The lower end of the spring (7) is supported by a limiting block (61) set at the bottom of the guide rod (6), and the clamping block (4) is tightly attached to the top of the positioning support (2). The bidirectional screw (51) passes through the two accommodating cavities (31) laterally and is threadedly connected to the two movable blocks (5). The threads at both ends of the bidirectional screw (51) are opposite, so that the two movable blocks (5) move in opposite directions under the action of the threads. The two ends of the bidirectional screw (51) are respectively rotatably set on the side walls at both ends of the positioning support (2), and a knob (8) is set at one end of the bidirectional screw (51). By rotating the knob (8), the movable blocks (5) are displaced in opposite directions and the distance between the two clamping blocks (4) is adjusted.

2. The clamping fixture for detecting the bending performance of an engineering component according to claim 1, characterized in that, Each of the movable blocks (5) has a guide rod (6) running through its two sides, and the two guide rods (6) are distributed on both sides of the bidirectional lead screw (51).

3. The clamping fixture for detecting the bending performance of an engineering component according to claim 1, characterized in that, The two accommodating cavities (31) are separated by a partition block (33), and the bidirectional lead screw (51) passes horizontally through the partition block (33) and is rotatably connected to it via a bushing.

4. The clamping fixture for testing the bending performance of engineering components as described in claim 1, characterized in that, A side plate (34) is provided at the lower end of one side of the positioning support (2), and the side plate (34) is connected and fixed to the testing table (1) by fasteners.

5. The clamping fixture for testing the bending performance of engineering components as described in claim 4, characterized in that, The testing platform (1) has several sets of positioning screw holes (11) at both ends for cooperating with the fasteners on the side plate (34).

6. The clamping fixture for testing the bending performance of engineering components as described in claim 1, characterized in that, The pressure grooves (41) are all rectangular in shape, and one end of the top of the pressure groove (41) is chamfered.

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