Workpiece positioning device of hardness detector

Abstract

The utility model discloses a workpiece positioning device for a hardness detector, which belongs to the technical field of hardness detection equipment and comprises a bottom plate, a worktable and a mounting frame are respectively mounted at the top of the bottom plate, a sliding groove is formed in the top of the worktable, and a driving component is mounted between the inside of the sliding groove and the side wall of the worktable. The driving assembly is connected with rectangular blocks, first convenient-to-disassemble assemblies are installed on the side walls of the front ends of the two rectangular blocks, the first convenient-to-disassemble assemblies are connected with a mounting plate, a second convenient-to-disassemble assembly is installed on the side wall of the front end of the mounting plate, and the second convenient-to-disassemble assembly is connected with a rectangular plate; through interaction of the working table, the driving assembly, the rectangular block, the mounting plate, the sliding groove, the clamping plate, the spring, the telescopic rod and other assemblies, the device can stably limit the whole special-shaped workpiece automatically, accurately and correctly according to the shape of the outer wall of the workpiece, a detection head can make contact with the workpiece conveniently and accurately, and the hardness of the workpiece is measured.

Description

Technical Field

[0001] This utility model relates to the field of hardness testing equipment technology, and more specifically, to a workpiece positioning device for a hardness tester. Background Technology

[0002] A hardness tester is a specialized instrument used to measure the surface hardness of coatings. Hardness testers are divided into two types: benchtop hardness testers and portable hardness testers. Benchtop hardness testers are mainly used in laboratories and have the advantage of high accuracy.

[0003] A Chinese patent publication number CN216525139U discloses a fixing device for a hardness tester, comprising a fixed side plate, a top plate, and a hardness tester body. The top plate is fixedly connected between the fixed side plates, and the hardness tester body is fixedly connected to the top of the top plate. A motor mounting plate is fixedly connected to the bottom of the fixed side plates. A lifting plate is slidably connected between the fixed side plates. A fixing mechanism is slidably connected to the top of the lifting plate via a sliding groove. A transmission shaft is rotatably connected to the lifting plate, and a transmission gear is fixedly connected to the transmission shaft. A rack is meshed with the top and bottom of the transmission gear. A first fixing plate is fixedly connected to the top of the rack located above the transmission gear, and a second fixing plate is fixedly connected to the top of the rack located below the transmission gear. A rotating handle is fixedly connected to one end of the transmission shaft, and the rotating handle is located on the outside of the lifting plate.

[0004] In the above device, rotating the handle causes the transmission gear to rotate, which in turn drives the racks to move closer together, thereby causing the fixing mechanisms on the top of the first and second fixing plates to move closer together and clamp the sample. This can only restrict some regular samples. For some irregular samples, the sliding clamping plate cannot stably restrict them. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a workpiece positioning device for a hardness tester, which solves the aforementioned problems.

[0007] (II) Technical Solution

[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a workpiece positioning device for a hardness tester, comprising a base plate, a worktable and a mounting frame respectively mounted on the top of the base plate, a sliding groove opened on the top of the worktable, a driving assembly installed between the sliding groove and the side wall of the worktable, a rectangular block connected to the driving assembly, a first easy-to-remove component installed on the front side wall of each of the two sets of rectangular blocks, a mounting plate connected to the first easy-to-remove component, a second easy-to-remove component installed on the front side wall of the mounting plate, a rectangular plate connected to the second easy-to-remove component, a plurality of sets of telescopic rods and springs evenly installed on the outer wall of the rectangular plate, each set of springs being sleeved on the outside of the corresponding telescopic rod, a clamping plate installed on the outer end of each set of telescopic rods, a cylinder mounted on the top of the mounting frame, the output end of the cylinder penetrating the mounting frame, and a detection head mounted on the output end of the cylinder.

[0009] Preferably, the drive assembly includes a motor, which is fixedly installed on the right side wall of the worktable. The output end of the motor extends through the interior of the slide groove, and the outer wall of the output end of the motor is rotatably connected to the worktable. A bidirectional threaded rod is fixedly installed on the output end of the motor. The left end of the bidirectional threaded rod is rotatably connected to the inner wall of the left end of the slide groove. Threaded blocks are threaded to the left and right ends of the bidirectional threaded rod, and the tops of the two sets of threaded blocks are fixedly connected to two sets of rectangular blocks, respectively.

[0010] Preferably, the easy-to-disassemble component includes a limiting groove, two sets of the limiting grooves are respectively opened on the front sidewalls of the two sets of rectangular blocks, and the two sets of limiting grooves respectively penetrate the adjacent sidewalls of the two sets of rectangular blocks. The inner walls of the two sets of limiting grooves are all connected to limiting blocks, and the adjacent sidewalls of the two sets of limiting blocks are all fixedly connected to the sidewalls of the mounting plate.

[0011] Preferably, the second easy-to-disassemble component includes a second limiting groove, and several sets of the second limiting grooves are respectively opened on the front sidewalls of the two sets of mounting plates, and several sets of the second limiting grooves respectively penetrate the sidewalls of the two sets of mounting plates that are close to each other. Each set of the second limiting grooves has a limiting strip inserted into its inner wall, and the sidewalls of the several sets of the limiting strips that are close to each other are fixedly connected to the sidewalls of several sets of rectangular plates.

[0012] Preferably, a limiting plate one is fixedly installed on the front outer wall of the rectangular block by a number of sets of screws, and the limiting plate one is in close contact with the front outer wall of the limiting block. A limiting plate two is fixedly installed on the front outer wall of the mounting plate by a number of sets of screws, and the limiting plate two is in close contact with the front outer wall of a number of limiting strips.

[0013] Preferably, a display device is installed on the outer wall of the front end of the workbench, and the display device is electrically connected to the detection head.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a workpiece positioning device for a hardness tester, which has the following beneficial effects:

[0016] Through the interaction of components such as the worktable, drive assembly, rectangular block, mounting plate, slide, clamping plate, spring and telescopic rod, the device can automatically and accurately stabilize the entire irregular workpiece according to the shape of the outer wall of the workpiece, so that the detection head can accurately contact the workpiece and measure the hardness of the workpiece.

[0017] When a set of springs or a set of telescopic rods is damaged, the corresponding spring or telescopic rod can be quickly replaced using the easy-to-remove component two. When the entire clamping and positioning device needs to be replaced, the entire mounting plate can be replaced using the easy-to-remove component one. Attached Figure Description

[0018] Figure 1 A schematic diagram of a preferred embodiment of the novel workpiece positioning device for a hardness tester provided by this utility model;

[0019] Figure 2 for Figure 1 The diagram shows the internal structure of the chute.

[0020] Figure 3 for Figure 1 The enlarged schematic diagram of part A shown below;

[0021] Figure 4 for Figure 2 The enlarged schematic diagram of part B is shown.

[0022] In the diagram: 1. Base plate; 2. Workbench; 3. Mounting bracket; 4. Cylinder; 5. Detection head; 6. Display device; 7. Slide groove; 8. Mounting plate; 9. Drive assembly; 91. Motor; 92. Bidirectional threaded rod; 93. Threaded block; 10. Rectangular block; 11. Limiting plate one; 12. Easy-to-remove assembly one; 121. Limiting groove one; 122. Limiting block; 13. Limiting plate two; 14. Telescopic rod; 15. Spring; 16. Clamping plate; 17. Easy-to-remove assembly two; 171. Limiting groove two; 172. Limiting strip; 18. Rectangular plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4This utility model provides a technical solution:

[0025] A workpiece positioning device for a hardness tester includes a base plate 1. A worktable 2 and a mounting frame 3 are respectively mounted on the top of the base plate 1. The worktable 2 is located directly below the mounting frame 3. A sliding groove 7 is formed on the top of the worktable 2, extending left and right along the top of the worktable 2. A drive assembly 9 is installed between the sliding groove 7 and the side wall of the worktable 2. The drive assembly 9 is connected to rectangular blocks 10. Easy-removable components 12 are installed on the front side walls of both sets of rectangular blocks 10. Each easy-removable component 12 is connected to a mounting plate 8. The front side wall of plate 8 is equipped with a second easy-to-disassemble component 17, which is connected to a rectangular plate 18. Several sets of telescopic rods 14 and springs 15 are evenly installed on the outer wall of the rectangular plate 18. Each set of springs 15 is sleeved on the outside of the corresponding telescopic rod 14. A clamping plate 16 is installed on the outer end of each set of telescopic rods 14. A rubber pad is installed on the side wall where the clamping plate 16 connects to the workpiece. A cylinder 4 is installed on the top of the mounting frame 3. The output end of the cylinder 4 passes through the mounting frame 3. A detection head 5 is installed on the output end of the cylinder 4.

[0026] Furthermore, the drive assembly 9 includes a motor 91, which is fixedly installed on the right side wall of the worktable 2. The output end of the motor 91 extends into the interior of the slide 7, and the outer wall of the output end of the motor 91 is rotatably connected to the worktable 2. A bidirectional threaded rod 92 is fixedly installed on the output end of the motor 91. The left end of the bidirectional threaded rod 92 is rotatably connected to the inner wall of the left end of the slide 7. Threaded blocks 93 are threadedly connected to the left and right ends of the bidirectional threaded rod 92, respectively. The tops of the two sets of threaded blocks 93 are fixedly connected to two sets of rectangular blocks 10, respectively. The output end of the motor 91 drives the bidirectional threaded rod 92 to rotate in both directions, so that the two sets of threaded blocks 93 drive the two sets of rectangular blocks 10 to move closer to each other or further away from each other.

[0027] Furthermore, the detachable component 12 includes a limiting groove 121. Two sets of limiting grooves 121 are respectively opened on the front sidewalls of the two sets of rectangular blocks 10, and the two sets of limiting grooves 121 respectively penetrate the adjacent sidewalls of the two sets of rectangular blocks 10. Limiting blocks 122 are inserted and connected to the inner walls of the two sets of limiting grooves 121. The adjacent sidewalls of the two sets of limiting blocks 122 are fixedly connected to the sidewalls of the mounting plate 8. The limiting block 122 with the mounting plate 8 installed can be pulled out or inserted from the limiting groove 121, thereby facilitating the replacement of different clamping and positioning devices.

[0028] Furthermore, the detachable component 2 17 includes a limiting groove 2 171. Several sets of limiting grooves 2 171 are respectively opened on the front sidewalls of the two sets of mounting plates 8, and the several sets of limiting grooves 2 171 respectively penetrate the sidewalls of the two sets of mounting plates 8 that are close to each other. A limiting strip 172 is inserted and connected to the inner wall of each set of limiting grooves 2 171. The sidewalls of the several sets of limiting strips 172 that are close to each other are fixedly connected to the sidewalls of several sets of rectangular plates 18. The limiting strip 172 with the rectangular plate 18 installed can be pulled out or inserted from the inside of the limiting groove 2 171, thereby facilitating the individual replacement of individual damaged springs 15.

[0029] Furthermore, a limiting plate 11 is fixedly installed on the front outer wall of the rectangular block 10 by several sets of screws. The limiting plate 11 is in contact with the front outer wall of the limiting block 122. A limiting plate 2 13 is fixedly installed on the front outer wall of the mounting plate 8 by several sets of screws. The limiting plate 2 13 is in contact with the front outer wall of several sets of limiting strips 172. The limiting plate 11 is configured to restrict the limiting block 122 from moving out of the limiting groove 121. The limiting plate 2 13 is configured to restrict the limiting strips 172 from moving out of the limiting groove 2 171.

[0030] Furthermore, a display device 6 is installed on the outer wall of the front end of the worktable 2. The display device 6 is electrically connected to the detection head 5. After the detection head 5 comes into contact with the workpiece to be tested, it will transmit the hardness detection information to the display device 6.

[0031] Working principle: The workpiece to be inspected is placed on the worktable 2. Then, the drive component 9 controls two sets of rectangular blocks 10 and two sets of mounting plates 8 to move closer to each other along the slide 7. When the clamping plate 16 touches the outer wall of the workpiece, the corresponding spring 15 and telescopic rod 14 will accurately and stably restrain the entire irregular workpiece according to the shape of the outer wall of the workpiece. Then, the output end of the cylinder 4 pushes the detection head 5 to contact the workpiece and measure the hardness of the workpiece. When a set of springs 15 or a set of telescopic rods 14 is damaged, the corresponding spring 15 or telescopic rod 14 can be quickly replaced by the easy-to-replace component 2 17. When the entire clamping and positioning device needs to be replaced, the entire mounting plate 8 can be replaced by the easy-to-replace component 1 12.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A workpiece positioning device for a hardness tester, comprising a base plate (1), a worktable (2) and a mounting frame (3) being mounted on the top of the base plate (1) respectively, characterized in that: The top of the workbench (2) is provided with a sliding groove (7), a driving assembly (9) is installed between the inside of the sliding groove (7) and the side wall of the workbench (2), the driving assembly (9) is connected with a rectangular block (10), the front end side wall of the two groups of rectangular blocks (10) is provided with a convenient disassembly assembly one (12), the convenient disassembly assembly one (12) is connected with a mounting plate (8), the front end side wall of the mounting plate (8) is provided with a convenient disassembly assembly two (17), the convenient disassembly assembly two (17) is connected with a rectangular plate (18), a plurality of groups of telescopic rods (14) and springs (15) are uniformly installed on the outer wall of the rectangular plate (18), each group of springs (15) is sleeved outside the corresponding telescopic rod (14), the outer side end of each group of telescopic rods (14) is provided with a clamping plate (16), the top of the mounting frame (3) is provided with a pneumatic cylinder (4), the output end of the pneumatic cylinder (4) penetrates through the mounting frame (3), and the output end of the pneumatic cylinder (4) is provided with a detection head (5).

2. The workpiece positioning device of claim 1, wherein: The driving assembly (9) comprises a motor (91), the motor (91) is fixedly installed on the right end side wall of the workbench (2), the output end of the motor (91) penetrates into the inside of the sliding groove (7), and the output end outer wall of the motor (91) is rotatably connected with the workbench (2), the output end of the motor (91) is fixedly installed with a double-thread rod (92), the left end of the double-thread rod (92) is rotatably connected with the left end inner wall of the sliding groove (7), and the left and right ends of the double-thread rod (92) are respectively threaded with a threaded block (93), and the top of the two groups of threaded blocks (93) is respectively fixedly connected with the two groups of rectangular blocks (10).

3. The workpiece positioning device of claim 1, wherein: The convenient disassembly assembly one (12) comprises a limiting groove one (121), and the limiting groove one (121) is respectively arranged on the front end side wall of the two groups of rectangular blocks (10), and the two groups of limiting grooves one (121) respectively penetrate through the side walls close to each other of the two groups of rectangular blocks (10). The inner wall of the two groups of limiting grooves one (121) is insertedly connected with a limiting block (122), and the side walls of the two groups of limiting blocks (122) close to each other are fixedly connected with the side walls of the mounting plate (8).

4. The workpiece positioning device of claim 3, wherein: The convenient disassembly assembly two (17) comprises a limiting groove two (171), and a plurality of groups of limiting grooves two (171) are respectively arranged on the front end side walls of the two groups of mounting plates (8), and the plurality of groups of limiting grooves two (171) respectively penetrate through the side walls close to each other of the two groups of mounting plates (8). The inner wall of each group of limiting grooves two (171) is insertedly connected with a limiting strip (172), and the side walls of the plurality of groups of limiting strips (172) close to each other are fixedly connected with the side walls of the plurality of groups of rectangular plates (18).

5. The workpiece positioning device of claim 4, wherein: The front end outer wall of the rectangular block (10) is fixedly installed with a limiting plate one (11) through a plurality of groups of screws, the front end outer wall of the limiting plate one (11) is in contact with the limiting block (122), and the front end outer wall of the limiting plate two (13) is fixedly installed on the front end outer wall of the mounting plate (8) through a plurality of groups of screws.

6. The workpiece positioning device of claim 1, wherein: The workbench (2) is provided with a display device (6) on the outer wall of the front end, which is electrically connected with the detection head (5).

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