Metallographic specimen grinding and polishing machine
By designing an automatic metallographic sample grinding and polishing machine that clamps the sample, the safety hazards and low efficiency of manual hand-held grinding and polishing in the existing technology have been solved, and efficient grinding and polishing of multiple samples and safe operation have been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-03-17
AI Technical Summary
Existing metallographic sample polishing machines require manual handling of the sample, which poses safety hazards, has low work efficiency, and cannot polish multiple samples simultaneously.
Design a metallographic sample grinding and polishing machine. The sample fixing components include a support arm, a positioning plate, a pressure rod, and a cylinder. It can automatically clamp multiple samples and grind and polish them with a grinding and polishing plate and sandpaper, reducing manual operation.
It improves grinding and polishing efficiency, reduces manual labor intensity, minimizes mechanical damage, and enables simultaneous grinding and polishing of multiple samples.
Smart Images
Figure CN223998058U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to the field of grinding and polishing machine technology, and specifically to a metallographic sample grinding and polishing machine. Background Technology
[0002] Metallographic analysis is one of the methods for examining and analyzing metallic materials, used to observe their microstructure. To perform metallographic analysis, samples suitable for microscopic observation and examination must be prepared, known as metallographic specimens. During the metallographic experiment, a metallographic specimen polishing machine is used to grind the metal specimen.
[0003] Chinese Patent Publication No. CN 215092771 U discloses a dual-disc continuously variable speed metallographic sample grinding and polishing machine, including a grinding and polishing machine body. The top of the grinding and polishing machine body has symmetrically opened placement slots, and a protective basin is connected to the inner side of each placement slot. A continuously variable speed motor is symmetrically installed inside the grinding and polishing machine body. The output shaft end of the continuously variable speed motor passes through the protective basin and is connected to a grinding disc. A water tap is connected to the top of the grinding and polishing machine body on one side of the protective basin.
[0004] The polishing machine in the aforementioned patent only has a polishing mechanism. During polishing, the sample needs to be manually placed on the polishing disc. This polishing method is very dangerous and can easily cause the sample to fly out. Moreover, only one or two samples can be polished each time, which results in extremely low working efficiency of the polishing machine. Utility Model Content
[0005] The purpose of this invention is to provide a metallographic sample grinding and polishing machine that eliminates the need for manual hand-held grinding and polishing, and can grind and polish multiple samples at a time, effectively improving the grinding and polishing efficiency of the machine and reducing the intensity of manual labor; thereby solving the technical problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A metallographic sample grinding and polishing machine includes a grinding and polishing mechanism and a sample fixing assembly; wherein the sample fixing assembly includes a support arm, one end of which is inserted into a fixed base and the other end is fixed to a bracket; a positioning plate is fixedly connected to the bracket, and multiple through holes are evenly distributed in a ring array on the positioning plate, and a pressure rod is provided in each through hole, the top of the pressure rod is fixed to the pressure plate, and a conical pressure head is fixed to the bottom of the pressure rod;
[0008] A spring is also sleeved on the pressure rod, and the spring is located between the positioning plate and the pressure plate; a rotating shaft is installed in the middle of the positioning plate with an interference fit, and a sample placement plate is welded to the bottom of the rotating shaft. Multiple sample placement holes are circumferentially opened on the sample placement plate.
[0009] A cylinder is also provided above the pressure plate.
[0010] As a further technical solution of this utility model, the outer side of the sample fixing assembly is also fitted with a shell, which is fixed to the support arm;
[0011] The cylinder is fixed inside the outer casing by a cylinder seat.
[0012] As a further technical solution of this utility model, a protruding shaft is fixed on the bottom side of the middle position of the support arm, and a buffer spring is fixed at the lower end of the protruding shaft; the fixed seat is fixed on the rear side of the grinding and polishing mechanism.
[0013] As a further technical solution of this utility model, the grinding and polishing mechanism includes a machine housing, on which two grinding cavities are provided, and a grinding and polishing disc is provided in each grinding cavity; the grinding and polishing disc is connected to the output shaft of a rotary motor, wherein the rotary motor is fixed below the grinding cavity, and the rotating shaft of the rotary motor passes through the grinding cavity.
[0014] As a further technical solution of this utility model, the upper surface of the polishing disc is provided with sandpaper, and a hoop is fastened to the outside of the sandpaper and the polishing disc.
[0015] As a further technical solution of this utility model, a protective cover is provided on the outside of the grinding disc, sandpaper and hoop; the bottom of the protective cover has three claws, which are engaged and fixed with the bottom side of the grinding cavity.
[0016] As a further technical solution of this utility model, two controllers for controlling the rotary motor are also embedded on the outside of the machine housing, and two water taps are provided on the top of the machine housing, respectively located on one side of the grinding chamber.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1. This utility model can clamp and polish multiple samples simultaneously, which greatly improves the efficiency of polishing work. Moreover, during the polishing process, there is no need for manual support of the samples, which effectively reduces the intensity of manual labor and reduces the occurrence of mechanical injuries.
[0019] 2. In this utility model, the lower end of the spring is located on the positioning plate, and the upper end of the spring is attached to the bottom of the pressure plate. This ensures that the pressure plate has good balance when applying force, prevents the occurrence of skewing, and ensures that each pressure rod is subjected to consistent force.
[0020] 3. In this utility model, since the sample fixing component is located at one end of the support arm and has a certain weight, the buffer spring can provide support for the support arm and also allow the sample placement tray to adhere to the sandpaper under the weight of the sample fixing component. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0022] Figure 2 This utility model Figure 1 Another perspective illustration.
[0023] Figure 3 This utility model Figure 1 The main view.
[0024] Figure 4 This utility model Figure 3 AA sectional view.
[0025] Figure 5 This utility model Figure 3 BB cross-sectional view.
[0026] Figure 6 This utility model Figure 1 A partial structural diagram.
[0027] Figure 7 This utility model Figure 4 Enlarged diagram of point C.
[0028] Figure 8 This utility model Figure 5 A magnified diagram of point D.
[0029] Figure 9 This utility model Figure 6 Enlarged diagram at point E
[0030] In the diagram: 1-machine housing, 2-controller, 3-grinding chamber, 4-rotary motor, 5-grinding disc, 6-sandpaper, 7-hoop, 8-protective cover, 9-fixed base, 10-support arm, 11-buffer spring, 12-outer shell, 13-faucet, 14-sample fixing assembly, 15-sample placement tray, 16-rotating shaft, 17-positioning plate, 18-pressure rod, 19-spring, 20-pressure plate, 21-cylinder, 22-bracket. Detailed Implementation
[0031] 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.
[0032] Please see Figure 1-9In this embodiment of the present invention, a metallographic sample grinding and polishing machine includes a grinding and polishing mechanism and a sample fixing assembly 14; wherein the sample fixing assembly 14 includes a support arm 10, one end of which is inserted into a fixing base 9, and the other end is fixed to a bracket 22; a positioning plate 17 is fixedly connected to the bracket 22, and multiple through holes are evenly distributed in a ring array on the positioning plate 17, and a pressure rod 18 is provided in each through hole, wherein the top of the pressure rod 18 is fixed to the pressure plate 20, and a conical pressure head is fixed to the bottom;
[0033] A spring 19 is also sleeved on the pressure rod 18, and the spring 19 is located between the positioning plate 17 and the pressure plate 20; a rotating shaft 16 is installed in the middle of the positioning plate 17 with an interference fit, and a sample placement plate 15 is welded to the bottom of the rotating shaft 16. Multiple sample placement holes are circumferentially opened on the sample placement plate 15.
[0034] A cylinder 21 is also provided above the pressure plate 20.
[0035] By adopting the above technical solution, when polishing the sample, the support arm 10 is first rotated at a certain angle so that the polishing disc 5 is above the sandpaper 6. Then, multiple samples are inserted into the sample placement holes opened on the sample placement disc 15. Subsequently, the cylinder rod of the cylinder 21 extends and presses down multiple pressure rods 18 through the pressure plate 20. The bottom of the sample is pressed onto the sandpaper 6 by the conical pressure head. When the polishing mechanism is working, multiple samples can be polished at the same time.
[0036] This device can clamp and polish multiple samples simultaneously, greatly improving polishing efficiency. Furthermore, during the polishing process, there is no need for manual support of the samples, effectively reducing labor intensity and minimizing the risk of mechanical injury.
[0037] After polishing is complete, the cylinder rod of cylinder 21 drives the pressure plate 20 to retract, and with the assistance of spring 19, it lifts the pressure rod 18; the staff can then remove the polished sample; the structure is simple and the operation is very convenient.
[0038] In this embodiment, a housing 12 is also sleeved on the outside of the sample fixing assembly 14, and the housing 12 is fixed to the support arm 10.
[0039] The cylinder 21 is fixed inside the outer casing 12 by a cylinder seat.
[0040] By adopting the above technical solution, the lower end of the spring 19 is located on the positioning plate 17, and the upper end of the spring is attached to the lower part of the pressure plate 20. This can ensure that the pressure plate 20 has good balance when applying force, prevent the situation of tilting, and ensure that each pressure rod 18 is subjected to consistent force.
[0041] The positioning plate 17 is embedded in the groove inside the bracket 22 and is fixed by bolts or welding. The rotating shaft 16 is interference-fitted with the positioning plate 17, which can prevent the sample placement plate 15 from rotating when it is in contact with the sandpaper, thus improving the polishing efficiency of the sample.
[0042] In this embodiment, a raised shaft is fixed to the bottom side of the middle position of the support arm 10, and a buffer spring 11 is fixed to the lower end of the raised shaft; the fixed seat 9 is fixed to the rear side of the grinding and polishing mechanism.
[0043] Since the sample fixing component 14 is located at one end of the support arm 10 and has a certain weight, the buffer spring 11 can provide support for the support arm 10 and also allow the sample placement tray 15 to adhere to the sandpaper under the weight of the sample fixing component 14.
[0044] In this embodiment, the polishing mechanism includes a housing 1, which has two grinding cavities 3, each of which has a polishing disc 5. The polishing disc 5 is connected to the output shaft of a rotary motor 4, wherein the rotary motor 4 is fixed below the grinding cavity 3, and the rotating shaft of the rotary motor 4 passes through the grinding cavity 3.
[0045] More specifically, the upper surface of the polishing disc 5 is provided with sandpaper 6, and a hoop 7 is fastened to the outside of the sandpaper 6 and the polishing disc 5; a protective cover 8 is also provided on the outside of the polishing disc 5, the sandpaper 6 and the hoop 7; the bottom of the protective cover 8 has three claws, which are engaged and fixed to the bottom side of the grinding cavity 3.
[0046] The outer side of the housing 1 is also fitted with two controllers 2 for controlling the rotary motor 4, and two faucets 13 are provided on the top of the housing 1, respectively located on one side of the grinding chamber 3.
[0047] By adopting the above technical solution, before use, the sandpaper 6 is first placed on the polishing disc 5, and then the hoop 7 is used to clamp and fix the sandpaper 6 and the polishing disc 5; then the protective cover 8 is installed inside the grinding chamber 3.
[0048] The rotary motor 4 is started by the controller 2, which drives the polishing disc 5 and sandpaper 6 to polish the sample.
[0049] During the polishing process, the high-metal sample will generate high temperature due to the large friction. Therefore, the polishing machine must be continuously sprayed with water to cool down the polishing disc 5 and the metal sample. To achieve this, we use the water tap 13 to introduce cold water into the sandpaper 6 and the polishing disc 5.
[0050] The working principle of this utility model is as follows: Before use, sandpaper 6 is first placed on the polishing disc 5, and then the hoop 7 is used to clamp and fix sandpaper 6 and polishing disc 5; then the protective cover 8 is installed inside the grinding chamber 3.
[0051] Then, the support arm 10 is rotated at a certain angle so that the polishing disc 5 is above the sandpaper 6. Next, multiple samples are inserted into the sample placement holes opened on the sample placement disc 15. Then, the cylinder rod of the cylinder 21 extends and presses down multiple pressure rods 18 through the pressure plate 20. The bottom of the sample is pressed onto the sandpaper 6 using the conical pressure head. The rotary motor 4 is started by the controller 2 to drive the polishing disc 5 and the sandpaper 6 to polish the sample.
[0052] During the polishing process, the high-metal sample will generate high temperature due to the large friction. Therefore, the polishing machine must be continuously sprayed with water to cool down the polishing disc 5 and the metal sample. To achieve this, we use the water tap 13 to introduce cold water into the sandpaper 6 and the polishing disc 5.
[0053] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A metallographic specimen grinding and polishing machine comprising a grinding and polishing mechanism and a specimen holding assembly (14); characterized by: The sample fixing assembly (14) comprises a supporting arm (10) which is inserted at one end into a fixing base (9) and has a support (22) fixed at the other end; the support (22) is fixedly connected with a positioning disc (17), a plurality of through holes are uniformly distributed in an annular array on the positioning disc (17), and a pressing rod (18) is arranged in each through hole; the top of the pressing rod (18) is fixed with a pressing disc (20), and the bottom is fixed with a conical pressing head; A spring (19) is further sleeved on the pressing rod (18), and the spring (19) is located between the positioning disc (17) and the pressing disc (20); a rotating shaft (16) is fitted at the middle position of the positioning disc (17), and the bottom of the rotating shaft (16) is welded with a sample placing disc (15); a plurality of sample placing holes are annularly formed on the sample placing disc (15); The upper side of the pressing disc (20) is further provided with a gas cylinder (21).
2. The metallographic specimen polishing and lapping machine of claim 1, wherein: The outer side of the sample fixing assembly (14) is further sleeved with an outer shell (12), and the outer shell (12) is fixed with the supporting arm (10); the gas cylinder (21) is fixed in the outer shell (12) through a gas cylinder base.
3. The metallographic specimen polishing and lapping machine of claim 1, wherein: The bottom side of the middle position of the supporting arm (10) is fixed with a protruding shaft, and a buffer spring (11) is fixed at the lower end of the protruding shaft; the fixing base (9) is fixed at the rear side of the grinding and polishing mechanism.
4. The metallographic specimen polishing and grinding and lapping machine of claim 1 wherein: The grinding and polishing mechanism comprises a machine shell body (1), two grinding cavities (3) are arranged on the machine shell body (1), and one grinding and polishing disc (5) is arranged in each grinding cavity (3); the grinding and polishing disc (5) is connected with the output shaft of a rotating motor (4), the rotating motor (4) is fixed below the grinding cavity (3), and the rotating shaft of the rotating motor (4) penetrates into the grinding cavity (3).
5. The metallographic specimen grinding and polishing machine of claim 4, wherein: The upper surface of the grinding and polishing disc (5) is provided with sandpaper (6), and a hoop (7) is buckled at the outer side of the sandpaper (6) and the grinding and polishing disc (5).
6. The metallographic specimen grinding and polishing machine of claim 5, wherein: The outer side of the grinding and polishing disc (5), the sandpaper (6) and the hoop (7) is further provided with a protective cover (8); the bottom of the protective cover (8) has three clamping claws and is clamped and fixed with the bottom side of the grinding cavity (3).
7. The metallographic specimen polishing and lapping machine of claim 4, wherein: The outer side of the machine shell body (1) is further embedded with two controllers (2) for controlling the rotating motor (4), and two water taps (13) are arranged above the machine shell body (1) and located on one side of the grinding cavity (3).