Metallographic specimen grinding and polishing device

Abstract

A metallographic specimen grinding and polishing device comprises a machine base, a motor is arranged at the right end of the upper portion of the machine base, and a first small support, a second small support, a first large support and a second large support are arranged at the left end. A straight bevel gear I is arranged on a rotating shaft of the motor; a grinding and polishing disc is arranged at the tail end of the rotating shaft; the straight bevel gear II is meshed with the straight bevel gear I and is arranged at the right end of the long transmission shaft; the left end of the long transmission shaft is arranged on the small bracket I and the small bracket II; the worm is mounted at the left end of the long transmission shaft; the worm gear is meshed with the worm and is arranged on the short transmission shaft; the short transmission shaft is arranged on the large bracket I and the large bracket II; the left end of the crank is connected to the front tail end of the short transmission shaft; the right side end of the connecting rod is connected to the front side end of the column rod; the rear end of the column rod is connected to the clamping frame. The motor drives the grinding and polishing disc and the first straight bevel gear to rotate, and the clamping frame conducts reciprocating rectilinear motion from the edge of the grinding and polishing disc to the circle center. The method has the advantages of simple operation, easy maintenance, low cost and less time consumption.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallographic sample preparation, and specifically relates to a metallographic sample grinding and polishing device. Background Art

[0002] The properties of a material are usually determined by its composition and microstructure. Analyzing the properties of a material by observing its microstructure is called metallographic analysis. Metallographic sample preparation is required before metallographic analysis. Metallographic sample preparation usually includes sampling, mounting, grinding, polishing and other steps. Grinding and polishing are the last stages of sample preparation. Each step will use finer abrasives than the previous step, and finally achieve a sample surface without deformation, scratches and mirror finish.

[0003] At present, the methods for making metallographic samples mainly include manual sample preparation and automated sample preparation. The advantage of manual sample preparation over automated sample preparation is that the shape and size of the sample can be flexibly adjusted according to needs, and no other equipment is required, and the cost is low. However, the production time is long, the efficiency is low, the precision is not high, and the operator needs to have professional skills and experience. Automated sample preparation can quickly and accurately produce samples that meet the requirements, greatly improving production efficiency, while also avoiding the problem of unstable quality in manual operation. However, automated sample preparation requires high-precision equipment and professional technicians for maintenance, which is costly. Summary of the invention

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the utility model is to provide a metallographic specimen grinding and polishing device, which is suitable for grinding and polishing metallographic specimens of various materials including metals, ceramics and their composite materials, and is particularly suitable for grinding and polishing metallographic specimens of metal materials. The whole device has the advantages of simple operation, easy maintenance, low cost and less time consumption.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: a metallographic sample grinding and polishing device, comprising a machine base, a motor is installed at the upper right end of the machine base, and a small bracket 1, a small bracket 2, a large bracket 1 and a large bracket 2 are arranged on the left side of the motor; a straight bevel gear 1 is arranged on the rotating shaft of the motor, and a grinding and polishing disk is arranged at the end of the rotating shaft; the straight bevel gear 1 is meshed with the straight bevel gear 2 arranged at the right end of the long transmission shaft; the left end of the long transmission shaft is installed in the circular holes on the small bracket 1 and the small bracket 2; the worm is installed on the long transmission shaft between the small bracket 1 and the small bracket 2; the worm wheel is meshed with the worm wheel, and the worm wheel is installed on the short transmission shaft; the short transmission shaft is installed in the upper circular holes of the large bracket 1 and the large bracket 2; the left end of the crank is connected to the front end of the short transmission shaft; the left end of the connecting rod is connected to the right end of the crank, and the right end of the connecting rod is connected to the front end of the column; the rear end of the column is connected to the clamping frame; the clamping frame is arranged on the upper side of the grinding and polishing disk; the weight bracket is installed on the left front end of the upper part of the machine base.

[0006] The motor is a speed-adjustable motor, the speed of which can be adjusted according to actual grinding conditions, and a column shell is arranged on the outside of the motor.

[0007] The bottom end of the grinding and polishing disc is threadedly connected to the rotating shaft.

[0008] The surface of the grinding and polishing disc is the sample grinding and polishing surface.

[0009] The central axis of the long transmission shaft and the central axis of the rotating shaft are perpendicular to each other and are in the same plane.

[0010] A square shell is arranged on the outer sides of the worm and the worm wheel.

[0011] The central axis of the short transmission shaft is respectively perpendicular to the central axes of the rotating shaft and the transmission shaft.

[0012] The connecting rod is installed on the front side of the crank, the column is installed on the rear side of the connecting rod, and the clamping frame is installed on the rear side of the column.

[0013] The square column on the clamping frame is provided with a hole, the sample is clamped at the bottom end of the clamping frame through bolts around the bottom of the clamping frame, and the weight is installed on the round rod above the clamping frame.

[0014] The beneficial effects of the utility model are:

[0015] The utility model has an adjustable motor speed, and can complete the grinding and polishing of the metallographic sample quickly and efficiently according to the hardness of the sample to be ground and the grinding condition.

[0016] The grinding and polishing disc of the utility model is threadedly connected to the rotating shaft, and the grinding and polishing disc with a suitable surface roughness can be replaced according to different stages of sample grinding and the use of the grinding and polishing disc.

[0017] The spur bevel gear one and the spur bevel gear two of the utility model are connected to the rotating shaft and the long transmission shaft by keys respectively, and the spur bevel gears have high load-bearing capacity and contact ratio, and are more stable and quieter than spur gears; the worm wheel and the worm are connected to the long transmission shaft and the short transmission shaft by keys respectively, and the worm gear mechanism has the advantages of load-bearing capacity, low noise and low vibration.

[0018] The crank, connecting rod, column rod and clamping frame of the utility model form a crank slider mechanism, and each original part is in surface contact, which is convenient for lubrication and has large power transmission. It has the advantages of stability, reliability, strong adaptability and adjustability.

[0019] The utility model provides a round rod on the clamping frame, and suitable counterweights can be selected according to the hardness of the sample and installed on the round rod to avoid affecting the grinding stability of the sample due to an overly fast rotation speed.

[0020] The utility model provides a column shell and a square shell on the machine base, which can protect the gear mechanism and the worm gear mechanism from being disturbed by external factors.

[0021] The utility model can drive the grinding and polishing disc, spur bevel gear, worm gear, crank slider and clamping frame to operate simultaneously through a motor, saving manpower and material resources, and the whole device has the advantages of simple operation, easy maintenance, low cost and less time consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0023] Figure 2 It is a schematic diagram of the main structure of the utility model.

[0024] Figure 3 It is a partial three-dimensional structural schematic diagram of the utility model.

[0025] Figure 4 It is a partial main structural schematic diagram of the utility model.

[0026] Figure 5 This is a schematic diagram of the first three-dimensional structure of the clamping frame of the utility model.

[0027] Figure 6 This is a schematic diagram of a second three-dimensional structure of the clamping frame of the utility model.

[0028] Figure 7 This is a schematic diagram of the main structure of the clamping frame of the utility model.

[0029] In the figure: 1-machine base, 2-motor, 3-rotating shaft, 4-spur bevel gear one, 5-grinding and polishing disk, 6-spur bevel gear two, 7-long transmission shaft, 8-small bracket one, 9-worm, 10-small bracket two, 11-worm gear, 12-large bracket one, 13-large bracket two, 14-short transmission shaft, 15-crank, 16-connecting rod, 17-column rod, 18-clamping frame, 19-weight bracket, 20-column shell, 21-square shell, 22-square column, 23-hole, 24-bolt, 25-weight, 26-round rod, 27-sample. DETAILED DESCRIPTION

[0030] The structural principle and working principle of the device of the utility model are further described in detail below in conjunction with the accompanying drawings.

[0031] See also Figure 1-7 , to achieve the grinding and polishing of metallographic samples.

[0032] A metallographic sample grinding and polishing device comprises a base 1, a motor 2 is installed at the right end of the upper part of the base 1, and a small bracket 1 8, a small bracket 2 10, a large bracket 12 and a large bracket 2 13 are installed at the left end; a straight bevel gear 1 4 is installed on the rotating shaft 3 of the motor 2, and a grinding and polishing disk 5 is installed at the end of the rotating shaft 3; the straight bevel gear 2 6 is meshed with the straight bevel gear 1 4 and is installed at the right end of a long transmission shaft 7; the left end of the long transmission shaft 7 is installed in the circular holes on the upper parts of the small bracket 1 8 and the small bracket 2 10; the worm gear 1 4 is meshed with the straight bevel gear 1 4 and is installed at the right end of the long transmission shaft 7; the left end of the long transmission shaft 7 is installed in the circular holes on the upper parts of the small bracket 1 8 and the small bracket 2 10; Rod 9 is installed on the left end of the long transmission shaft 7; the worm wheel 11 is meshed with the worm 9, and the worm wheel 11 is installed on the short transmission shaft 14; the short transmission shaft 14 is installed in the upper circular holes of the large bracket 12 and the large bracket 2 13; the left end of the crank 15 is connected to the front end of the short transmission shaft 14; the left end of the connecting rod 16 is connected to the right end of the crank 15, and the right end of the connecting rod 16 is connected to the front end of the column 17; the rear end of the column 17 is connected to the clamping frame 18; the weight bracket 19 is installed at the upper left front end of the base 1.

[0033] See also Figure 1 , the arrow from O to X is from left to right, the arrow from O to Y is from back to front, and the arrow from O to Z is from bottom to top. Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The front, back, left, and right Figure 1 The same direction as in .

[0034] The speed of the motor 2 is adjustable and can be adjusted according to the actual grinding conditions. A column housing 20 is provided on the outside of the motor 2 to protect the motor 2, the rotating shaft 3, the spur bevel gear 1 4 and the spur bevel gear 2 6.

[0035] The rotating shaft 3 is provided with a keyway, and the spur bevel gear 4 is connected to the rotating shaft 3 by a key; the end of the rotating shaft 3 is provided with a thread, and the bottom end of the grinding and polishing disc 5 is connected to the rotating shaft 3 by a thread.

[0036] The surface of the grinding and polishing disc 5 is the grinding and polishing surface of the sample, and the grinding and polishing disc 5 with a suitable surface roughness can be replaced according to the grinding condition of the sample.

[0037] The right end of the long transmission shaft 7 is provided with a keyway, and the straight bevel gear 6 is connected to the long transmission shaft 7 by a key; the central axis of the long transmission shaft 7 and the central axis of the rotating shaft 3 are perpendicular to each other and in the same plane.

[0038] The upper parts of the small bracket 1 8 and the small bracket 2 10 are both provided with round through holes, and the worm 9 is installed at the horizontal center of the small bracket 1 8 and the small bracket 2 10 through the long transmission shaft 7; a square shell 21 is provided on the outer side of the worm 9 and the worm wheel 11 to protect the worm wheel 9 and the worm 11.

[0039] The upper parts of the large bracket 12 and the large bracket 2 13 are both provided with round through holes, and the worm gear 11 is installed at the horizontal center of the large bracket 12 and the large bracket 2 13 through a short transmission shaft 14 .

[0040] The central axis of the short transmission shaft 14 is perpendicular to the central axes of the rotating shaft 3 and the transmission shaft 7 respectively.

[0041] The connecting rod 16 is installed on the front side of the crank 15 , the column 17 is installed on the rear side of the connecting rod 16 , and the clamping frame 18 is installed on the rear side of the column 17 .

[0042] A hole 23 is provided on the square column 22 on the clamping frame 18 . The sample is clamped at the bottom end of the clamping frame 18 by bolts 24 around the bottom of the clamping frame 18 . The weight 25 is installed on a round rod 26 above the clamping frame 18 .

[0043] The working principle of the utility model is:

[0044] First, according to the hardness of the sample 27 to be ground, select the counterweight on the clamping frame 18 and the grinding and polishing disk 5 with appropriate surface roughness, clamp the sample 27 to be ground at the bottom of the clamping frame 18 through the bolts 24 around the bottom of the clamping frame 18, then remove the appropriate weight 25 from the weight bracket 19 and install it on the round rod 26 above the clamping frame 18, and place the clamping frame 18 above the grinding and polishing disk 5; then, turn on the power switch of the motor 2, adjust the appropriate speed through the speed knob according to the hardness of the sample, and the rotating shaft 3 drives the spur bevel gear 1 4 and the grinding and polishing disk 5 to rotate in the XOY plane; the spur bevel gear 2 6 rotates in the YOZ plane under the meshing of the spur bevel gear 1 4, and at the same time drives the long transmission shaft 7 and the worm 9 to rotate in the YOZ plane; the worm wheel 11 rotates in the XOZ plane under the meshing of the worm 9; The wheel 9 drives the short transmission shaft 14 and the crank 15 to rotate in the XOZ plane; the crank 15 makes a full circle rotation around the central axis of the short transmission shaft 14; the connecting rod 16 performs a composite motion of swinging and moving driven by the crank 15; the column 17 performs a composite motion of rotation and movement driven by the connecting rod 16; the clamping frame 18, driven by the column 17, performs a reciprocating linear motion from the edge of the grinding and polishing disc 5 to the center of the circle; then, the time required for grinding the sample 27 is estimated according to the motor speed and grinding experience, and the grinding is completed; finally, the speed is adjusted from high to low by adjusting the speed knob, and the power supply of the motor 2 is turned off when the speed drops to a low speed, and all components stop running, the weights on the round rod 26 are removed and placed on the weight bracket 19, the bolts 24 at the bottom of the clamping frame 18 are removed and the sample 27 is removed to complete the grinding and polishing of the metallographic sample.

Claims

1. A metallographic sample grinding and polishing device, comprising a base (1), characterized in that: A motor (2) is installed at the right end of the upper part of the machine base (1), and a small bracket 1 (8), a small bracket 2 (10), a large bracket 1 (12) and a large bracket 2 (13) are arranged on the left side of the motor (2); a straight bevel gear 1 (4) is arranged on the rotating shaft (3) of the motor (2), and a grinding and polishing disk (5) is arranged at the end of the rotating shaft (3); the straight bevel gear 1 (4) is meshed with a straight bevel gear 2 (6) arranged at the right end of the long transmission shaft (7); the left end of the long transmission shaft (7) is installed in the circular holes on the small bracket 1 (8) and the small bracket 2 (10); the worm (9) is installed in the long transmission shaft between the small bracket 1 (8) and the small bracket 2 (10). The invention relates to a transmission shaft (7); a worm wheel (11) meshing with a worm (9), and the worm wheel (11) is arranged on a short transmission shaft (14); the short transmission shaft (14) is installed in the upper circular holes of the large bracket (12) and the large bracket (13); the left end of the crank (15) is connected to the front end of the short transmission shaft (14); the left end of the connecting rod (16) is connected to the right end of the crank (15), and the right end of the connecting rod (16) is connected to the front end of the column (17); the rear end of the column (17) is connected to a clamping frame (18); the clamping frame (18) is arranged on the upper side of the grinding and polishing disc (5); and the weight bracket (19) is installed at the left front end of the upper part of the machine base (1).

2. A metallographic sample grinding and polishing device according to claim 1, characterized in that: The motor (2) is a speed-adjustable motor, and the rotation speed can be adjusted according to actual grinding conditions. A column housing (20) is provided outside the motor (2).

3. A metallographic sample grinding and polishing device according to claim 1, characterized in that: The bottom end of the grinding and polishing disc (5) is threadedly connected to the rotating shaft (3).

4. A metallographic sample grinding and polishing device according to claim 1, characterized in that: The surface of the grinding and polishing disc (5) is the sample grinding and polishing surface.

5. A metallographic sample grinding and polishing device according to claim 1, characterized in that: The central axis of the long transmission shaft (7) and the central axis of the rotating shaft (3) are perpendicular to each other and are in the same plane.

6. A metallographic sample grinding and polishing device according to claim 1, characterized in that: A square housing (21) is provided on the outer sides of the worm (9) and the worm wheel (11).

7. A metallographic sample grinding and polishing device according to claim 1, characterized in that: The central axis of the short transmission shaft (14) is respectively perpendicular to the central axes of the rotating shaft (3) and the transmission shaft (7).

8. A metallographic sample grinding and polishing device according to claim 1, characterized in that: The connecting rod (16) is installed on the front side of the crank (15), the column (17) is installed on the rear side of the connecting rod (16), and the clamping frame (18) is installed on the rear side of the column (17).

9. A metallographic sample grinding and polishing device according to claim 1, characterized in that: The square column (22) on the clamping frame (18) is provided with a hole (23), the sample (27) is clamped at the bottom end of the clamping frame (18) by bolts (24) around the bottom of the clamping frame (18), and the weight (25) is installed on the round rod (26) above the clamping frame (18).

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