A pre-grinder for a balance block metallographic test
By designing a detachable limiting plate and a release component, the problem of the inconvenience of disassembling the limiting plate in existing metallographic sample grinding and polishing machines is solved, enabling rapid fixation and disassembly of samples and improving grinding and polishing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUZHOU CHENYI HARDWARE PROD CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-07-31
AI Technical Summary
The limiting plate of the existing metallographic sample grinding and polishing machine is not easy to disassemble, and the limiting plate does not clamp the sample, resulting in low efficiency of batch operation.
A detachable limiting plate was designed, with an elastic limiting structure and a release component on the inner side, including an adjusting screw, a limiting post and a release ring, to achieve rapid fixation and disassembly of the sample.
It improves grinding and polishing efficiency. Through the detachable limiting plate and elastic limiting structure, it achieves stable fixation and rapid transfer of samples, thereby improving the efficiency of batch operations.
Smart Images
Figure CN224575349U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor parts manufacturing technology, and in particular to a metallographic testing pre-grinding machine for balance blocks. Background Technology
[0002] The main function of motor balance weights is to reduce motor vibration and noise, ensuring smooth motor operation. By assembling balance weights on the motor rotor, its mass and center of gravity can be adjusted, thereby changing the motor's moment of inertia, effectively reducing vibration amplitude, and achieving the goal of reducing vibration and noise.
[0003] In the production process of motor balance blocks, metallographic analysis is required. Generally, a pre-grinding machine is used to grind, polish, and etch the end faces of the balance blocks, followed by material analysis. Searching online, for example, reveals a metallographic sample grinding and polishing machine disclosed at https: / / www.bilibili.com / video / BV1gV411H7Lb / ?spm_id_from=333.788.recommend_more_video.-1, capable of grinding and polishing balance block samples. However, most existing metallographic sample grinding and polishing machines share common drawbacks with the aforementioned machine. For instance, the limiting plate for sample positioning is inconvenient to disassemble, and the limiting plate itself does not clamp the sample. During use, samples must be manually placed one by one into the limiting holes of the limiting plate. Similarly, after grinding and polishing, samples must be removed and reinserted one by one, resulting in low efficiency for batch operations. Therefore, a metallographic testing pre-grinding machine for balance blocks is proposed to improve these problems. Utility Model Content
[0004] The purpose of this application is to provide a pre-grinding machine for metallographic testing of balance blocks to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this application provides the following technical solution: a pre-grinding machine for metallographic testing of a balance block, comprising a frame and a drive device and a grinding disc respectively installed on the upper and lower sides of the frame, wherein a clamping column and a limiting disc are installed at the bottom end of the drive device, and the limiting disc is detachably installed at the bottom end of the drive device.
[0006] The limiting plate includes a plate body and a mounting head. The mounting head is fixed at the center of one side of the plate body and is detachably connected to the driving device. The plate body has multiple limiting holes arranged in a ring array. An elastic limiting structure is provided on the inner side of the limiting holes to clamp and fix the sample.
[0007] The disc is also equipped with release components that are compatible with multiple elastic limiting structures to release the clamping and fixing effect of the elastic limiting structures on the sample.
[0008] As a further supplement to this solution, the elastic limiting structure includes multiple limiting blocks and compression springs. Multiple sliding grooves are arranged in a ring on the inner wall of the limiting hole. The multiple limiting blocks are installed on the inner side of the sliding grooves one by one through the compression springs, and the ends of the limiting blocks away from the compression springs extend to the outer side of the sliding grooves.
[0009] As a further supplement to this solution, the end of the limiting block away from the compression spring is arc-shaped.
[0010] As a further supplement to this solution, the release assembly includes an adjusting screw, a limiting post, and multiple release rings;
[0011] The adjusting screw is rotatably installed at the bottom of the disc body, and the limiting post is vertically slidably installed between the disc body and the mounting head. The adjusting screw thread passes through the limiting post. Multiple release rings and multiple limiting holes are set one by one, and the release rings and the limiting post are fixed together by an L-shaped connecting rod. The side end of the mounting head is provided with a clearance hole for the L-shaped connecting rod to move.
[0012] As a further supplement to this solution, the bottom of the disc is provided with a groove for storing the adjustment screw.
[0013] As a further supplement to this solution, the top of the mounting head is integrally provided with a plug-in post, and the horizontal cross-section of the plug-in post is polygonal.
[0014] In summary, the technical effects and advantages of this utility model are as follows:
[0015] 1. In this utility model, by detachably connecting the limiting plate and the driving device, and setting an elastic limiting structure inside the limiting hole, multiple samples can be stably placed inside the limiting hole when the limiting plate is detached, so that the samples are pre-fixed inside the limiting hole, making it convenient to transfer multiple samples together with the limiting plate. During the polishing process, the operator can load other samples to be polished one by one into another detached limiting plate. After polishing is completed, the limiting plate is detached, and the limiting plate filled with other samples is installed to continue polishing, which helps to improve polishing efficiency.
[0016] 2. In this utility model, by setting up a release assembly including an adjusting screw, a limiting post and multiple release rings, the operator only needs to manually rotate the adjusting screw. The adjusting screw drives the limiting post to move down with the release rings through the L-shaped connecting rod. The moving release rings squeeze the limiting block until the limiting block is completely pressed into the slide groove. At this time, the sample loses the clamping and fixing effect of the limiting block, and multiple samples can be smoothly released from the limiting plate under their own gravity, realizing the rapid disassembly of the sample. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure in this embodiment;
[0019] Figure 2 This is a schematic diagram of the limiting disk in this embodiment;
[0020] Figure 3 for Figure 2 A schematic diagram of the structure in the state of the unbound loop shifting downwards;
[0021] Figure 4 for Figure 2 A schematic diagram of the cross-sectional structure;
[0022] Figure 5 This is a schematic diagram of the structure of the unrestricted component in this embodiment.
[0023] In the diagram: 1. Frame; 2. Grinding disc; 3. Drive unit; 4. Clamping column; 5. Limiting disc; 51. Disc body; 5101. Limiting hole; 5102. Slide groove; 5103. Groove; 52. Mounting head; 5201. Clearance hole; 53. Adjusting screw; 54. Compression spring; 55. Limiting block; 56. Release ring; 57. L-shaped connecting rod; 58. Limiting column. Detailed Implementation
[0024] 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 scope of protection of the present utility model.
[0025] Example: Reference Figure 1-5 The metallographic pre-grinding machine for balance block testing shown includes a frame 1 and a drive device 3 and a grinding disc 2 respectively installed on the upper and lower sides of the frame 1. The bottom end of the drive device 3 is equipped with a clamping column 4 and a limiting disc 5. The drive device 3 is an existing conventional drive device, such as driving the clamping column 4 and the limiting disc 5 to rise and rotate synchronously, or driving the clamping column 4 to rise and fall independently. The above actions are all conventional actions of existing pre-grinding machines, so their specific implementation structure will not be described in detail here.
[0026] The limiting plate 5 is detachably installed at the bottom of the drive unit 3, such as... Figure 2-4 As shown, the top of the mounting head 52 is integrally provided with a plug-in post, and the horizontal cross-section of the plug-in post is polygonal, which facilitates stable plug-in and fixation. Alternatively, bolt connection can be used to fix the limiting plate 5 and the driving device 3. When in use, the limiting plate 5 can be removed separately, which facilitates quick loading, unloading and transfer of samples during batch operations.
[0027] The limiting disk 5 includes a disk body 51 and a mounting head 52. The mounting head 52 is fixed to the center of one side of the disk body 51 and is detachably connected to the driving device 3. The disk body 51 has a plurality of limiting holes 5101 arranged in a ring. An elastic limiting structure is provided inside the limiting holes 5101 to clamp and fix the sample. Specifically, the elastic limiting structure includes a plurality of limiting blocks 55 and a compression spring 54. A plurality of sliding grooves 5102 are arranged in a ring on the inner wall of the limiting holes 5101. Each limiting block 55 is installed one-to-one with the compression spring 54 inside the sliding groove 5102, and the end of the limiting block 55 away from the compression spring 54 extends to the outside of the sliding groove 5102. The end of the limiting block 55 away from the compression spring 54 is arc-shaped. Figure 2 and Figure 4 As shown, during the process of placing the sample into the inner side of the limiting hole 5101, the sample contacts and presses the arc-shaped surface of the limiting block 55, squeezing the limiting block 55 into the inner side of the slide groove 5102. The limiting block 55 clamps the sample under the action of the compression spring 54, so that the sample is pre-fixed in the inner side of the limiting hole 5101.
[0028] It should be further explained that the function of using the limiting block 55 and the compression spring 54 to clamp and fix the sample is only to facilitate the stable placement of multiple samples inside the limiting hole 5101 in advance when the limiting plate 5 is disassembled. This makes it easier to transfer multiple samples together with the limiting plate 5 to the bottom of the drive device 3 for grinding and polishing. Before grinding and polishing, the clamping and fixing function of the limiting block 55 and the compression spring 54 on the sample will not interfere with the clamping column 4 clamping the sample, that is, it will not affect the stability of the normal grinding and polishing operation.
[0029] To facilitate quick and easy removal of the sample from the limiting plate 5, the plate body 51 is also equipped with a release component adapted to multiple elastic limiting structures to release the clamping and fixing effect of the elastic limiting structures on the sample. Specifically, the release component includes an adjusting screw 53, a limiting post 58, and multiple release rings 56. The adjusting screw 53 is rotatably mounted on the bottom end of the plate body 51, and the limiting post 58 is vertically slidably mounted between the plate body 51 and the mounting head 52. The adjusting screw 53 is threaded through the limiting post 58. The multiple release rings 56 are correspondingly set with multiple limiting holes 5101, and the release rings 56 and the limiting post 58 are fixed together by an L-shaped connecting rod 57. The side end of the mounting head 52 is provided with a clearance hole 5201 for the L-shaped connecting rod 57 to move, and the bottom end of the plate body 51 is provided with a groove 5103 for receiving the adjusting screw 53.
[0030] The operator only needs to manually rotate the adjusting screw 53. The adjusting screw 53 drives the limiting post 58 to move down through the L-shaped connecting rod 57 with the release ring 56. The moving release ring 56 squeezes the limiting block 55 until the limiting block 55 is completely pressed into the slide groove 5102. At this time, the sample loses the clamping and fixing effect of the limiting block 55 and can smoothly detach from the limiting plate 5 under its own gravity.
[0031] The working principle of this utility model is as follows: When the limiting plate 5 is disassembled, multiple samples are stably placed inside the limiting hole 5101. The samples contact and press the arc-shaped surface of the limiting block 55, and the limiting block 55 is squeezed into the inner side of the slide groove 5102. The limiting block 55 clamps the samples under the action of the compression spring 54, so that the samples are pre-fixed inside the limiting hole 5101. Then, multiple samples are transferred together with the limiting plate 5 to the bottom of the driving device 3 for polishing.
[0032] During the polishing process, the operator can load other samples to be polished into another disassembled limiting plate 5;
[0033] After grinding and polishing, remove the limiting plate 5 and install the limiting plate 5 that is now filled with other samples to continue grinding and polishing.
[0034] The operator only needs to manually rotate the adjusting screw 53. The adjusting screw 53 drives the limiting post 58 to move down through the L-shaped connecting rod 57 with the release ring 56. The moving release ring 56 squeezes the limiting block 55 until the limiting block 55 is completely pressed into the slide groove 5102. At this time, the sample loses the clamping and fixing effect of the limiting block 55 and can smoothly detach from the limiting plate 5 under its own gravity. A new sample to be polished can then be loaded and wait for the next polishing.
[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A counterbalance metallographic test pre-grinding machine, comprising a rack (1) and a driving device (3) and a grinding disc (2) respectively installed on the upper and lower sides of the rack (1), the bottom end of the driving device (3) is provided with a pressing column (4) and a limiting disc (5), characterized in that, The limiting plate (5) is detachably installed at the bottom of the driving device (3); The limiting disk (5) includes a disk body (51) and a mounting head (52). The mounting head (52) is fixed at the center of one side of the disk body (51) and is detachably connected to the driving device (3). The disk body (51) has a plurality of limiting holes (5101) arranged in a ring. An elastic limiting structure is provided on the inner side of the limiting holes (5101) to clamp and fix the sample. The disc body (51) is also equipped with a release component adapted to the multiple elastic limiting structures to release the clamping and fixing effect of the elastic limiting structures on the sample.
2. A pre-grinding machine for metallographic testing of a balance block according to claim 1, characterized in that: The elastic limiting structure includes multiple limiting blocks (55) and compression springs (54). Multiple sliding grooves (5102) are arranged in a ring on the inner wall of the limiting hole (5101). The multiple limiting blocks (55) are installed one-to-one with the compression springs (54) on the inner side of the sliding grooves (5102), and the ends of the limiting blocks (55) away from the compression springs (54) extend to the outer side of the sliding grooves (5102).
3. A pre-grinding machine for metallographic testing of a balance block according to claim 2, characterized in that: The end of the limiting block (55) away from the compression spring (54) is arc-shaped.
4. A pre-grinding machine for metallographic testing of a balance block according to claim 1, characterized in that: The release assembly includes an adjusting screw (53), a limiting post (58), and multiple release rings (56). The adjusting screw (53) is rotatably mounted on the bottom end of the disc (51), and the limiting post (58) is vertically slidably mounted between the disc (51) and the mounting head (52). The adjusting screw (53) is threaded through the limiting post (58). Multiple release rings (56) are correspondingly set with multiple limiting holes (5101), and the release rings (56) and the limiting post (58) are fixed together by an L-shaped connecting rod (57). The side end of the mounting head (52) is provided with a clearance hole (5201) for the L-shaped connecting rod (57) to move.
5. A pre-grinding machine for metallographic testing of a balance block according to claim 4, characterized in that: The bottom end of the disc (51) is provided with a groove (5103) for receiving the adjusting screw (53).
6. A prepolishing machine for metallographic testing of a balance block according to claim 1, characterized in that: The top of the mounting head (52) is integrally provided with a plug post, and the horizontal cross-section of the plug post is polygonal.