Positioning fixture for parts inspection

Abstract

The utility model relates to positioning fixture technology field for part inspection especially relates to a positioning fixture for part inspection. Including operation platform, the lower surface of operation platform is provided with first air cylinder, and the output fixedly connected with the top block of first air cylinder, and the top block is located the upper surface of operation platform, and one side surface fixedly connected with second air cylinder of operation platform, and the output fixedly connected with fixed block of second air cylinder, and the position of operation platform surface corresponding top block and fixed block all are provided with processing piece, and the position of operation platform surface corresponding top block and processing piece sets up adjusting device, and adjusting device includes support block, adjusting plate, the lower surface of support block and the surface fixed connection of operation platform, and the position of operation platform surface corresponding both sides of support block all are fixedly connected with support column, and the upper surface fixedly connected with adjusting lever of support column. The utility model provides a positioning fixture for part inspection has the advantage that it is convenient to carry out quick clamping limit protection to part.

Description

Technical Field

[0001] This utility model relates to the technical field of positioning fixtures for parts inspection, and in particular to a positioning fixture for parts inspection. Background Technology

[0002] Part inspection positioning fixtures are devices used to fix and position parts to be inspected during production and testing, ensuring the positional accuracy and stability of the parts during inspection, thereby guaranteeing product quality. Positioning fixtures are typically designed to match the geometry of the parts and inspection standards, allowing measuring tools to accurately contact specific parts of the parts. They are commonly used in machining, quality inspection, and assembly processes.

[0003] Existing technologies, such as the utility model patent with publication number CN217668521U, disclose a positioning fixture for machining slots in parts. This patent includes a clamping component, a mounting part, a nut, and inspection blocks. Two inspection blocks are provided, symmetrically distributed around the mounting part, and connected to both sides of the mounting part. A mounting space for the part to be machined is left between the two inspection blocks. The part to be machined has a through hole a. The clamping component includes a clamping end and a shaft. The clamping end is connected to one end of the shaft, and the other end of the shaft passes sequentially through the through hole a, the oblong groove of the mounting part, and the circular groove, and is threadedly connected to the nut. The end face of the nut presses against the end face of the mounting part, the end face of the mounting part presses against the end face of the part to be machined, and the clamping end of the clamping component presses against the other end face of the part to be machined. This utility model uses a simple structure to achieve positioning and precision control during grinding of parts, improving operational efficiency and increasing the pass rate of part machining.

[0004] During the machining of mechanical parts, it was found that due to the wide variety of sizes and dimensions of mechanical parts, displacement can easily occur during the inspection process due to external forces or improper operation. This can lead to inaccurate positioning of parts, resulting in deviations in the measurement results and affecting the accuracy and reliability of the inspection. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where, during the production of mechanical parts, due to the wide variety of sizes and types of parts, displacement can easily occur during testing due to external forces or improper operation, resulting in inaccurate part positions. This leads to deviations in the measurement results and affects the accuracy and reliability of the inspection.

[0006] To solve the above-mentioned technical problems, this utility model provides a positioning fixture for parts inspection, comprising: an operating table; a first cylinder is provided on the lower surface of the operating table; a top block is fixedly connected to the output end of the first cylinder; the top block is located on the upper surface of the operating table; a second cylinder is fixedly connected to one side surface of the operating table; a fixing block is fixedly connected to the output end of the second cylinder; machining parts are provided on the surface of the operating table corresponding to the positions of the top block and the fixing block; and an adjustment device is provided on the surface of the operating table corresponding to the positions of the top block and the machining parts. The adjustment device includes a support block and an adjustment plate; the lower surface of the support block is fixedly connected to the surface of the operating table. Next, support columns are fixedly connected to both sides of the support block on the surface of the operating table. An adjusting rod is fixedly connected to the upper surface of the support column. Two rotating rings are rotatably connected to the arc surface of the adjusting rod. A connecting hole is opened on the surface of the adjusting plate. The arc surface of the rotating ring is slidably inserted into the inner wall of the connecting hole. A limit rod is threaded through one side of the adjusting plate. A pad is fixedly connected to the bottom end of the limit rod. A pressing shaft is threaded through one side of the adjusting plate. An adjusting hole is opened on the surface of the rotating ring. The arc surface of one end of the pressing shaft is slidably inserted into the inner wall of the adjusting hole. The arc surface of the pressing shaft abuts against the arc surface of the adjusting rod.

[0007] The effect achieved by the above components is as follows: the first cylinder drives the top block to move vertically from below, thereby fitting against the workpiece for dimensional inspection. At the same time, the position is deflected by the adjustment plate, allowing the adjustment plate to abut against the surface of the workpiece with the help of the limit rod controlled at one end. Meanwhile, the limit rod, together with the pad block, presses the workpiece, which helps the support block to provide support and limit, thus adapting to complex shape inspection operations.

[0008] Preferably, the pad is a rubber block, and the lower surface of the pad abuts against the surface of the workpiece.

[0009] The effects achieved by the above components are: the rubber material prevents scratches on the workpiece surface, the elastic deformation compensates for uneven surfaces, and the friction is increased to prevent slipping.

[0010] Preferably, a positioning frame is fixedly connected to the operation table surface at the positions corresponding to both sides of the support block, a positioning block is slidably inserted into the upper surface of the positioning frame, a side plate is fixedly connected to the side wall of the positioning frame, the surface of the side plate abuts against one side of the positioning block, and the surface of the positioning block abuts against the side wall surface of the workpiece.

[0011] The effect achieved by the above components is as follows: the sliding positioning block adapts to the size of different workpieces, while the side plate restricts the displacement of the positioning block. At this time, the positioning block and the top block fixed at the output end of the first cylinder work together to achieve three-way positioning, eliminating the degree of freedom of movement of the workpiece.

[0012] Preferably, an auxiliary rod is slidably passed through the inner wall of the upper end of the limiting rod, and both ends of the auxiliary rod are fixedly connected with protrusions.

[0013] The effects achieved by the above components are: the auxiliary rod provides a turning fulcrum, the raised structure prevents slipping, simplifies the operation of the limit rod, and improves clamping efficiency.

[0014] Preferably, an auxiliary device is provided on the surface of the operating table corresponding to the position of the second cylinder and the fixed block. The auxiliary device includes a slot and an insert frame. The slot is opened on the side wall surface of the operating table. An insert plate is inserted into the inner wall of the slot. The upper surface of the insert plate is fixedly connected to the bottom end of the insert frame. The inner wall of the insert frame is engaged with the surface of the workpiece. A connecting rod is fixedly connected to the surface of the operating table corresponding to the position of the insert plate. A fixed shaft is threadedly connected to the arc surface of the connecting rod. A rotating plate is rotatably connected to one side of the fixed shaft. The rotating plate has an "L" shaped cross section. The inner wall of the bottom end of the rotating plate slides through the connecting rod. An insert hole is opened on the surface of the insert plate. The inner wall of the insert hole is engaged with the upper surface of the rotating plate.

[0015] The effects achieved by the above components are as follows: during the dimensional inspection of workpieces at different positions, the insert plate and slot in the auxiliary device can be used to quickly disassemble and assemble the inlay frame, which is convenient for changing tooling and helps to replace the inlay frame after long-term use. At the same time, the insert plate is locked into the inlay hole by the rotating plate, which enhances the stability of auxiliary positioning.

[0016] Preferably, a baffle is fixedly connected to the surface of the operating table at the position corresponding to the connecting rod. The baffle has an "L" shaped cross-section, and the cross-sectional dimensions of the baffle are adapted to the cross-sectional dimensions of the connecting rod.

[0017] The effect achieved by the above components is that the baffle can protect the position of the fixed shaft and prevent it from falling off after rotation and movement.

[0018] Preferably, a guide rod is fixedly connected to the bottom of the inner wall of the mounting frame, and the arc surface of the guide rod is inserted into the bottom of the inner wall of the workpiece.

[0019] The effect achieved by the above components is that the guide rod prepositions the workpiece in the mounting frame, corrects the placement deviation of the workpiece, and improves the positioning accuracy.

[0020] Compared with related technologies, the positioning fixture for parts inspection provided by this utility model has the following beneficial effects:

[0021] This utility model provides a positioning fixture for parts inspection. By operating the adjustment device, the position of the workpiece is clamped and limited. The dimensions of the workpiece are inspected by lifting and moving the top block fixed at the output end of the first cylinder of the operating table. At the same time, the surface of the workpiece is effectively clamped and limited by the adjustment plate with the arc surface of the adjustment rod at the upper end of the support column and the pad with the spiral movement of one end of the adjustment plate. This allows for quick dimensional inspection of the workpiece.

[0022] By operating the auxiliary device, further dimensional inspection of the workpiece can be achieved, and the position of the mounting frame can be changed and protected. The insert plate fixed at the bottom of the mounting frame is inserted and fixed into the slot opened on the surface of the operating table. Then, the rotating plate with the arc surface of the connecting rod is connected to the mounting hole opened on the surface of the insert plate, which helps to quickly and conveniently perform positioning and dimensional inspection of the workpiece. Attached Figure Description

[0023] Figure 1 A schematic diagram of the structure of a positioning fixture for parts inspection provided by this utility model;

[0024] Figure 2 for Figure 1 The diagram shows the structure of the regulating device.

[0025] Figure 3 for Figure 1 A partial disassembled structural diagram of the adjustment device is shown;

[0026] Figure 4 for Figure 1 The diagram shows the structure of the auxiliary device.

[0027] Figure 5 for Figure 4 The enlarged structural diagram at point A is shown below;

[0028] Figure 6 for Figure 4 A partial structural diagram of the mounting frame is shown.

[0029] The following are the labeling elements in the diagram: 1. Operating table; 2. Workpiece; 3. First cylinder; 4. Adjusting device; 401. Support block; 402. Positioning frame; 403. Positioning block; 404. Side plate; 405. Support column; 406. Adjusting rod; 407. Rotating ring; 408. Adjusting plate; 409. Extrusion shaft; 410. Adjusting hole; 411. Limiting rod; 412. Auxiliary rod; 413. Pad; 414. Connecting hole; 5. Auxiliary device; 51. Inlay frame; 52. Insert plate; 53. Slot; 54. Inlay hole; 55. Connecting rod; 56. Rotating plate; 57. Fixed shaft; 58. Baffle; 59. Guide rod; 6. Top block; 7. Second cylinder; 8. Fixed block. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0032] Please see Figures 1 to 6 The present invention provides a positioning fixture for parts inspection, comprising: an operating table 1, a first cylinder 3 disposed on the lower surface of the operating table 1, a top block 6 fixedly connected to the output end of the first cylinder 3, the top block 6 being located on the upper surface of the operating table 1, a second cylinder 7 fixedly connected to one side surface of the operating table 1, a fixing block 8 fixedly connected to the output end of the second cylinder 7, a workpiece 2 disposed on the surface of the operating table 1 corresponding to the positions of the top block 6 and the fixing block 8, an adjustment device 4 disposed on the surface of the operating table 1 corresponding to the positions of the top block 6 and the workpiece 2, and an auxiliary device 5 disposed on the surface of the operating table 1 corresponding to the positions of the second cylinder 7 and the fixing block 8.

[0033] In the embodiments of this utility model, please refer to Figure 2 and Figure 3 The adjusting device 4 includes a support block 401 and an adjusting plate 408. The lower surface of the support block 401 is fixedly connected to the surface of the operating table 1. Support columns 405 are fixedly connected to the surface of the operating table 1 at positions corresponding to both sides of the support block 401. An adjusting rod 406 is fixedly connected to the upper surface of the support column 405. Two rotating rings 407 are rotatably connected to the arc surface of the adjusting rod 406. A connecting hole 414 is opened on the surface of the adjusting plate 408. The arc surface of the rotating ring 407 is slidably inserted into the inner wall of the connecting hole 414. A limit rod 411 is threaded through one side of the adjusting plate 408. A pad 413 is fixedly connected to the bottom end of the limit rod 411. A pressing shaft 409 is threaded through one side of the adjusting plate 408. An adjusting hole is opened on the surface of the rotating ring 407. 410, one end of the extrusion shaft 409 has an arc surface that slides through the inner wall of the adjustment hole 410, and one end of the extrusion shaft 409 abuts against the arc surface of the adjustment rod 406. The pad 413 is a rubber block, and the lower surface of the pad 413 abuts against the surface of the workpiece 2. The operating table 1 is fixedly connected to the positions on both sides of the support block 401. The upper surface of the positioning frame 402 is slidably inserted with the positioning block 403. The side wall of the positioning frame 402 is fixedly connected with the side plate 404. The surface of the side plate 404 abuts against one side of the positioning block 403. The surface of the positioning block 403 abuts against the side wall surface of the workpiece 2. The upper inner wall of the limiting rod 411 has an auxiliary rod 412 that slides through it. Both ends of the auxiliary rod 412 are fixedly connected with protrusions.

[0034] In the embodiments of this utility model, please refer to Figure 4 , Figure 5 and Figure 6 The auxiliary device 5 includes a slot 53 and an inlay frame 51. The slot 53 is formed on the side wall surface of the operating table 1. An insert plate 52 is inserted into the inner wall of the slot 53. The upper surface of the insert plate 52 is fixedly connected to the bottom end of the inlay frame 51. The inner wall of the inlay frame 51 is engaged with the surface of the workpiece 2. A connecting rod 55 is fixedly connected to the surface of the operating table 1 at the position corresponding to the insert plate 52. A fixed shaft 57 is threadedly connected to the arc surface of the connecting rod 55. A rotating plate 56 is rotatably connected to one side of the fixed shaft 57. The cross-section of the rotating plate 56 is "L". The bottom inner wall of the rotating plate 56 slides through the connecting rod 55. The surface of the insert plate 52 is provided with an inlay hole 54. The inner wall of the inlay hole 54 is inserted into the upper surface of the rotating plate 56. A baffle 58 is fixedly connected to the surface of the operating table 1 at the position corresponding to the connecting rod 55. The cross-section of the baffle 58 is "L" shaped. The cross-sectional dimensions of the baffle 58 are adapted to the cross-sectional dimensions of the connecting rod 55. A guide rod 59 is fixedly connected to the bottom of the inner wall of the inlay frame 51. The arc surface of the guide rod 59 is inserted into the bottom of the inner wall of the workpiece 2.

[0035] The working principle of the positioning fixture for parts inspection provided by this utility model is as follows: During the inspection of the workpiece 2, the workpiece 2 is first placed on the surface of the operating table 1 at the position corresponding to the top block 6 of the output end of the first cylinder 3. At the same time, the workpiece 2 is clamped and limited by the adjusting device 4. The workpiece 2 is first placed on the surface of the support block 401. Then, the positioning block 403 set on the side wall of the support block 401 temporarily positions the workpiece 2, so that the position of the workpiece 2 cannot be deviated. Then, the adjusting plate 40 on the arc surface of the adjusting rod 406 is adjusted. 8. Perform position rotation adjustment. At this time, rotate the adjusting plate 408 with the help of the rotating ring 407 on the arc surface of the adjusting rod 406, so that the adjusting plate 408 is rotated to the position directly above the workpiece 2. Then, rotate the limiting rod 411 on the surface of the adjusting plate 408, so that the pad 413 fixed at the bottom end of the limiting rod 411 presses and limits the surface of the workpiece 2. During this process, in order to prevent the position of the adjusting plate 408 and the rotating ring 407 from deviating, rotate the pressing shaft 409 with the threaded rotation on one side of the adjusting plate 408, so that the pressing shaft 409 and the rotating ring 407 are rotated. The ring 407 slides through until one end of the extrusion shaft 409 abuts against the arc surface of the adjusting rod 406. At this point, the position of the entire adjusting plate 408 cannot be moved. Then, the first cylinder 3 is activated, causing the first cylinder 3 to drive the top block 6 to rise, thereby making the top block 6 fit against the workpiece 2, thus verifying that the dimensions of the workpiece 2 are qualified. When it is necessary to perform dimensional inspection on the workpiece 2 at different positions, the workpiece 2 can be positioned with the help of the mounting bracket 51 in the auxiliary device 5. At the same time, the second cylinder 7 drives the fixing block 8 to move the workpiece 2. The device provides compression protection and allows for the replacement and fixation of the mounting frame 51 after prolonged use. The replaced mounting frame 51 is inserted into the slot 53 on the surface of the worktable 1 via the bottom-fixed insert plate 52. Then, the fixed shaft 57 on the arc surface of the connecting rod 55 is rotated, causing the fixed shaft 57 to rotate the rotating plate 56 until the upper surface of the rotating plate 56 is inserted into the mounting hole 54 on the side wall of the insert plate 52. At this point, the replaced mounting frame 51 can no longer shake, thus enabling further dimensional inspection of the processed part 2.

[0036] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A positioning fixture for inspecting parts, characterized in that, include: An operating table (1) is provided with a first cylinder (3) on its lower surface. A top block (6) is fixedly connected to the output end of the first cylinder (3). The top block (6) is located on the upper surface of the operating table (1). A second cylinder (7) is fixedly connected to one side surface of the operating table (1). A fixing block (8) is fixedly connected to the output end of the second cylinder (7). A processing part (2) is provided on the surface of the operating table (1) at the positions corresponding to the top block (6) and the fixing block (8). An adjustment device (4) is provided on the surface of the operating table (1) at the positions corresponding to the top block (6) and the processing part (2). The adjustment device (4) includes a support block (401) and an adjustment plate (408). The lower surface of the support block (401) is fixedly connected to the surface of the operating table (1). A top block (6) is fixedly connected to the two sides of the support block (401) on the surface of the operating table (1). A support column (405) is provided, and an adjusting rod (406) is fixedly connected to the upper surface of the support column (405). Two rotating rings (407) are rotatably connected to the arc surface of the adjusting rod (406). A connecting hole (414) is provided on the surface of the adjusting plate (408). The arc surface of the rotating ring (407) is slidably inserted into the inner wall of the connecting hole (414). A limit rod (411) is threaded through one side of the adjusting plate (408). A pad (413) is fixedly connected to the bottom end of the limit rod (411). A pressing shaft (409) is threaded through one side of the adjusting plate (408). An adjusting hole (410) is provided on the surface of the rotating ring (407). The arc surface of one end of the pressing shaft (409) is slidably inserted into the inner wall of the adjusting hole (410). One end of the pressing shaft (409) abuts against the arc surface of the adjusting rod (406).

2. The positioning fixture for parts inspection according to claim 1, characterized in that, The pad (413) is a rubber block, and the lower surface of the pad (413) abuts against the surface of the workpiece (2).

3. A positioning fixture for parts inspection according to claim 1, characterized in that, Positioning frames (402) are fixedly connected to the surface of the operating table (1) at positions corresponding to both sides of the support block (401). Positioning blocks (403) are slidably inserted into the upper surface of the positioning frames (402). Side plates (404) are fixedly connected to the side walls of the positioning frames (402). The surface of the side plates (404) abuts against one side of the positioning blocks (403). The surface of the positioning blocks (403) abuts against the side wall surface of the workpiece (2).

4. A positioning fixture for parts inspection according to claim 1, characterized in that, An auxiliary rod (412) slides through the inner wall of the upper end of the limiting rod (411), and both ends of the auxiliary rod (412) are fixedly connected with protrusions.

5. A positioning fixture for parts inspection according to claim 1, characterized in that, An auxiliary device (5) is provided on the surface of the operating table (1) corresponding to the positions of the second cylinder (7) and the fixing block (8). The auxiliary device (5) includes a slot (53) and an inlay frame (51). The slot (53) is opened on the side wall surface of the operating table (1). An insert plate (52) is inserted into the inner wall of the slot (53). The upper surface of the insert plate (52) is fixedly connected to the bottom end of the inlay frame (51). The inner wall of the inlay frame (51) is engaged with the surface of the workpiece (2). A connecting rod (55) is fixedly connected to the position corresponding to the insert plate (52) on the surface. The arc surface of the connecting rod (55) is threadedly connected to a fixed shaft (57). A rotating plate (56) is rotatably connected to one side of the fixed shaft (57). The cross-section of the rotating plate (56) is "L" shaped. The bottom inner wall of the rotating plate (56) slides through the connecting rod (55). An inlay hole (54) is opened on the surface of the insert plate (52). The inner wall of the inlay hole (54) is inserted into the upper surface of the rotating plate (56).

6. A positioning fixture for parts inspection according to claim 5, characterized in that, A baffle (58) is fixedly connected to the surface of the operating table (1) at the position corresponding to the connecting rod (55). The cross-section of the baffle (58) is "L" shaped, and the cross-sectional dimensions of the baffle (58) are adapted to the cross-sectional dimensions of the connecting rod (55).

7. A positioning fixture for parts inspection according to claim 5, characterized in that, A guide rod (59) is fixedly connected to the bottom of the inner wall of the inlay frame (51), and the arc surface of the guide rod (59) is inserted into the bottom of the inner wall of the workpiece (2).

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