Ultrathin sample clamping device for polishing machine

Abstract

The utility model relates to an ultrathin sample clamping device for a polishing machine, and belongs to the technical field of metal sample machining in the metallurgical industry. According to the technical scheme, the polishing device comprises an air cylinder (1), a cylinder rod (2), a cylinder head (3), a clamp (6), a cross beam (8), a stand column (11), a polishing machine grinding disc (12) and a polishing machine (13), the stand column (11) is fixed to the polishing machine (13), the cross beam (8) is fixed to the stand column (11), a cylinder body of the air cylinder (1) is fixed to the cross beam (8), the cylinder rod (2) of the air cylinder is connected with the cylinder head (3), the clamp (6) is connected to the cylinder head (3), and the clamp (6) is located over the polishing machine grinding disc (12); the cylinder head (3) is in threaded connection with the cylinder rod (2) of the air cylinder; and the cross beam (8) is fixed on the upright post (11) through a support ring (10). The polishing device can meet the polishing requirements of samples with the size smaller than 1 mm, and the smoothness of the surfaces of the samples is guaranteed.

Description

Technical Field

[0001] The utility model relates to an ultra-thin sample clamping device used for a polishing machine, belonging to the technical field of metal sample machining in the metallurgical industry. Background Art

[0002] Polishing machine is a commonly used polishing equipment. Its main accessory is the polishing disc, which is installed on the polishing machine. Its working principle is: the motor drives the polishing disc installed on the polishing machine to rotate at high speed, and the polishing disc rubs against the surface to be polished, thereby achieving the purpose of polishing.

[0003] In the process of electron microscope testing of the physical properties of materials, the test materials are required to be ground and polished into thinner samples with a thickness of less than or equal to 1mm. However, common polishing machines require polishing of samples with a thickness of more than 5mm, and cannot complete the clamping of samples with a thickness of less than 1mm. If manual polishing is used, the surface finish of the sample, the parallelism of the upper and lower surfaces, and the thickness accuracy of the sample cannot be guaranteed, and the sample qualification rate is low. Therefore, it is necessary to optimize and improve the mechanical structure of common polishing machines for ultra-thin samples with a thickness of less than 1mm to meet the requirements of polishing samples with a thickness of less than 1mm. Utility Model Content

[0004] The utility model aims to provide an ultra-thin sample clamping device for a polishing machine, which can meet the polishing requirements of samples below 1 mm, ensure the smoothness of the sample surface, and solve the problems existing in the background technology.

[0005] The technical solution of the utility model is:

[0006] The invention discloses an ultra-thin sample clamping device for a polishing machine, comprising a cylinder, a cylinder rod, a cylinder head, a clamp, a crossbeam, a column, a polishing machine grinding disc and a polishing machine, wherein the column is fixed on the polishing machine, the crossbeam is fixed on the column, the cylinder body of the cylinder is fixed on the crossbeam, the cylinder rod of the cylinder is connected to the cylinder head, the clamp is connected to the cylinder head, and the clamp is located directly above the polishing machine grinding disc.

[0007] The fixture comprises a pressure head, a magnet, a hard sponge and an ear shaft, wherein the ear shaft is fixed on the pressure head and connected to the cylinder head, and the hard sponge is fixed under the pressure head, and a magnet matching with the sample is arranged under the hard sponge.

[0008] The ear shaft is connected to the cylinder head through a pin shaft, and a joint bearing matched with the pin shaft is arranged in the cylinder head.

[0009] The two ends of the pin shaft are respectively provided with retaining springs.

[0010] A thickness sensor is arranged on the magnet.

[0011] The cylinder head is threadedly connected to the cylinder rod of the cylinder.

[0012] The crossbeam is fixed on the column through a supporting ring.

[0013] The beneficial effects of the utility model are as follows: the ultra-thin specimens are clamped by utilizing the magnet and hard sponge in the fixture, the cylinder adopts a pressure-stabilizing valve to ensure the clamping force of the specimens, the specimens are polished by a polishing machine, the thickness accuracy, parallelism and surface finish of the specimens are improved, the polishing requirements of specimens below 1 mm are met, and thus the qualified rate of ultra-thin specimens is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the clamp of the utility model;

[0016] In the figure: cylinder 1, cylinder rod 2, cylinder head 3, pin 4, retaining ring 5, fixture 6, test specimen 7, crossbeam 8, signal line 9, support ring 10, column 11, polishing machine grinding disc 12, polishing machine 13, pressure head 14, thickness sensor 15, magnet 16, hard sponge 17, pressure reducing valve 18, two-position five-way reversing air valve 19, spherical bearing 20, ear shaft 21, display 22. DETAILED DESCRIPTION

[0017] The present invention will be further described below by way of examples with reference to the accompanying drawings.

[0018] See attached Figure 1-2 A ultra-thin sample clamping device for a polishing machine includes a cylinder 1, a cylinder rod 2, a cylinder head 3, a fixture 6, a crossbeam 8, a column 11, a polishing machine grinding disc 12 and a polishing machine 13. The column 11 is fixed on the polishing machine 13, the crossbeam 8 is fixed on the column 11, the cylinder body of the cylinder 1 is fixed on the crossbeam 8, the cylinder rod 2 of the cylinder is connected to the cylinder head 3, the fixture 6 is connected to the cylinder head 3, and the fixture 6 is located directly above the polishing machine grinding disc 12.

[0019] In this embodiment, refer to the attached Figure 1-2 ,according to Figure 1 As shown, the column 1 is welded to the outer shell of the polishing machine 13 for fixation, and a support ring 10 is designed on the column 11. The height of the beam 8 can be adjusted by the position of the support ring 10 on the column 11.

[0020] according to Figure 1As shown in the figure, the cylinder 1 is installed on the cantilever end of the beam 8 through the bottom flange, the two-position five-way reversing valve 19 and the pressure-stabilizing valve 18 are both installed on the side of the cylinder 1, the cylinder head 3 is installed on the cylinder rod 2 of the cylinder 1 through threads, a spherical bearing 20 is installed inside the cylinder head 3, the pin 4 passes through the ear shaft 21 on the upper part of the fixture 6 and the inner hole of the spherical bearing 20, and the fixture 6 is connected to the cylinder head 3. Retaining springs 5 ​​are installed at both ends of the pin 4 to prevent the pin 1 from moving axially.

[0021] according to Figure 2 As shown, the fixture 6 is composed of a pressure head 14, a thickness sensor 15, a magnet 16, and a hard sponge 17, wherein the hard sponge 17 is bonded to the pressure head 14 by glue, and the magnet 16 is bonded to the middle bottom position of the hard sponge 17. The thickness sensor 15 is installed in the middle of the magnet 16 and is transmitted to the indicator 22 through the signal line 9.

[0022] according to Figure 1 , 2 It is shown that a hard sponge 17 is bonded to the pressure head 14. The hard sponge 17 has certain elasticity and deformation characteristics. It cooperates with the adsorption effect of the magnet 16 to complete the clamping of the ultra-thin sample 7.

[0023] according to Figure 1 As shown, a pressure regulating valve 18 is installed between the cylinder 1 and the gas source. The pressure regulating valve 18 can adjust the pressure of the gas entering the cylinder 1 according to the pressing force of the polishing of the sample 7.

[0024] The specific steps are as follows:

[0025] During installation, first adjust the position of the support ring 10 on the column 11 according to the stroke of the cylinder 1, and then weld and fix it. Secondly, apply glycerine grease to the joint bearing 20 for lubrication;

[0026] Operate the two-position five-way reversing air valve 19 to raise the cylinder rod 2 of the cylinder 1, thereby driving the clamp 6 to rise;

[0027] Apply coupling agent on the head of sensor 15;

[0028] Adsorb the sample 7 onto the magnet 16 and ensure that the sample 7 is in the middle of the hard sponge 17;

[0029] Operate the two-position five-way reversing air valve 19 to lower the air cylinder 1 and press the sample 7 onto the grinding disc 12 of the polishing machine 13;

[0030] Turn on the polishing machine 13, gradually increase the rotation speed of the grinding disc 12 to the rated rotation speed, and polish the sample 7;

[0031] The thickness of the sample 7 is transmitted to the display 22 via the signal line 9. When the thickness reaches the required thickness value, the grinding disc 12 stops rotating;

[0032] After the grinding disc 12 stops rotating, the two-position five-way reversing valve 19 is operated, and the cylinder 1 rises;

[0033] The sample 7 adsorbed on the magnet 16 is manually removed.

[0034] An embodiment of the present utility model is as follows:

[0035] Column 11: diameter 26mm, length 300mm;

[0036] Support ring 10: inner diameter 26mm, outer diameter 40mm, thickness 30mm;

[0037] Beam 8: Length 250mm, width 50mm, thickness 30mm

[0038] Cylinder 1: inner diameter 15mm, outer diameter 30mm, stroke 100mm;

[0039] Pin 4: diameter 5mm, length 35mm;

[0040] Pressure head 14: length 60mm, width 60mm, height 40mm;

[0041] Hard sponge 17: 60mm long, 60mm wide, 25mm high;

[0042] Magnet 16: diameter 30mm, thickness 2mm;

[0043] Spherical bearing 20: GE5C;

[0044] Thickness sensor 15: outer diameter 10 mm.

Claims

1. An ultra-thin sample clamping device for a polishing machine, characterized in that: The invention comprises a cylinder (1), a cylinder rod (2), a cylinder head (3), a fixture (6), a crossbeam (8), a column (11), a polishing machine grinding disc (12) and a polishing machine (13), wherein the column (11) is fixed on the polishing machine (13), the crossbeam (8) is fixed on the column (11), the cylinder body of the cylinder (1) is fixed on the crossbeam (8), the cylinder rod (2) of the cylinder is connected to the cylinder head (3), the fixture (6) is connected to the cylinder head (3), and the fixture (6) is located directly above the polishing machine grinding disc (12).

2. The ultra-thin sample clamping device for a polishing machine according to claim 1, characterized in that: The fixture (6) comprises a pressure head (14), a magnet (16), a hard sponge (17) and an ear shaft (21), wherein the ear shaft (21) is fixed on the pressure head (14), the ear shaft (21) is connected to the cylinder head (3), the hard sponge (17) is fixed under the pressure head (14), and a magnet (16) matching the sample is provided under the hard sponge (17).

3. The ultra-thin sample clamping device for a polishing machine according to claim 2, characterized in that: The ear shaft (21) is connected to the cylinder head (3) via a pin shaft (4), and a joint bearing (20) matching with the pin shaft (4) is provided in the cylinder head (3).

4. The ultra-thin sample clamping device for a polishing machine according to claim 3, characterized in that: The two ends of the pin shaft (4) are respectively provided with a retaining spring (5).

5. The ultra-thin sample clamping device for a polishing machine according to claim 2, characterized in that: A thickness sensor (15) is provided on the magnet (16).

6. The ultra-thin sample clamping device for a polishing machine according to claim 1 or 2, characterized in that: The cylinder head (3) is threadedly connected to the cylinder rod (2) of the cylinder.

7. The ultra-thin sample clamping device for a polishing machine according to claim 1, characterized in that: The crossbeam (8) is fixed on the column (11) via a support ring (10).

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