Graphite product grinding jig

Abstract

The application relates to the technical field of grinding clamps, and discloses a graphite product grinding clamp, which comprises a base table used for bearing a graphite product, a plurality of through holes are arranged in the interior of the base table, a plurality of columns are arranged in the interiors of the through holes, and the plurality of columns can support the graphite product. When a marking core moves close to the lower surface of the graphite product, the marking core can mark the lower surface of the graphite product with marking points, the lower surface of the graphite product can be marked with different numbers of marking points according to the spacing of the gaps, the warped position of the lower surface of the graphite product can be positioned and the size of the warping can be determined, when the graphite product is turned over for grinding, an operator can adjust the feeding amount of a grinding wheel according to the height of the warping, the time for adjusting the feeding amount of the grinding wheel is reduced, and the grinding processing speed of the graphite product is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grinding fixture, and particularly to a graphite product grinding fixture. BACKGROUND

[0002] Graphite is a material with good electrical conductivity, high temperature resistance, strong chemical stability and other characteristics, and is widely used in aerospace, electronics, metallurgy, machinery and other industries. However, graphite has low hardness, high brittleness, and is prone to dust, which makes graphite products face certain technical problems in the processing process, especially in the grinding process. In order to ensure the grinding accuracy and surface quality, the graphite product usually needs to use a special grinding fixture.

[0003] The existing graphite disc is placed on the upper surface of the fixture workbench, and then the position of the graphite disc is fixed by the clamp block. Since the graphite disc itself will be stress-deformed, the upper and lower surfaces of the graphite disc will be warped. When grinding, there will be a gap between the lower surface of the graphite disc and the plane of the fixture workbench. If there is no device for marking the position of the warped lower surface of the graphite disc on the fixture, the operator cannot quickly adjust the feed amount of the grinding wheel according to the height of the surface warping of the graphite disc during subsequent face grinding, greatly increasing the grinding time of the graphite disc. SUMMARY

[0004] The purpose of the present application is to solve the problems existing in the prior art and provide a graphite product grinding fixture.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] A graphite product grinding fixture, comprising:

[0007] A base table for carrying a graphite product, a plurality of through holes are formed in the interior of the base table;

[0008] A plurality of columns are arranged in the interior of the through holes, the plurality of columns can support the graphite product, and a plurality of first holes are formed in the interior of the plurality of columns;

[0009] A plurality of marking cores are arranged in the interior of the first holes, the plurality of marking cores are arranged to mark a different number of marking points on the lower surface of the graphite product according to the size of the gap when there is a gap between the contact surface of the lower surface of the graphite product and the upper surface of the base table;

[0010] A second driving unit is arranged in the through hole, the marker core and the second driving unit are coupled, and the second driving unit is arranged to drive the marker core to move along the central axis of the column when the second driving unit is pressed by the column, so that the marker core can mark the lower surface of the graphite product with the marking points.

[0011] As a further scheme of the present application, an inner wall of the through hole is fixedly provided with a partition plate, a circular groove is formed in an outer surface of the partition plate, the column is arranged in the circular groove and is slidingly arranged on an inner wall of the circular groove, the inner wall of the circular groove is provided with a limiting groove, and a protrusion is arranged on a circumferential outer surface of the column and is slidingly arranged on the inner wall of the limiting groove.

[0012] As a further scheme of the present application, a rod body is fixedly arranged at a bottom end of the column, a plurality of first grooves are formed in the base, and a limiting unit for fixing the position of the column is arranged in the first grooves.

[0013] A sliding rod is arranged in the first groove and is slidingly arranged on the inner wall of the first groove.

[0014] A stop block is arranged in the through hole and is fixedly connected with the inner wall of the through hole, and the rod body is arranged between the sliding rod and the stop block.

[0015] A second guide column is fixedly arranged on an upper surface of the sliding rod away from the rod body, and the second guide column is arranged to drive the sliding rod to move along the central axis of the first groove when the second guide column is forced to move, so that the rod body is arranged between the sliding rod and the stop block, and the position of the column is fixed.

[0016] As a further scheme of the present application, a first driving unit for driving the second guide column to move is arranged on the base, and the first driving unit comprises:

[0017] A rotating disc is rotatably arranged on a circumferential outer surface of the base, a plurality of guide grooves are equidistantly arranged on a circumferential direction of an upper surface of the rotating disc, and the second guide column is slidingly arranged on the inner wall of the guide groove.

[0018] A pneumatic telescopic rod is fixedly connected with the circumferential outer surface of the base at one end, and a telescopic end of the pneumatic telescopic rod is rotatably connected with the upper surface of the rotating disc.

[0019] As a further scheme of the present application, a plurality of openings are arranged on the circumferential outer surface of the column, a stop plate is fixedly arranged on a top wall of the opening and penetrates the bottom end of the marker core, a tension spring is fixedly connected with a lower surface of the stop plate, and a bottom end of the tension spring is fixedly connected with a bottom wall of the opening.

[0020] As a further scheme of the present application, the second driving unit comprises:

[0021] The barrel is arranged in the through hole and fixedly connected with the inner wall of the through hole.

[0022] The piston is arranged in the barrel and slidably connected with the inner wall of the barrel, and the piston is fixedly connected with the bottom end of the column.

[0023] The arc-shaped compression barrel is fixedly arranged on the upper surface of the piston and connected with the inside of the barrel through the conduit.

[0024] The arc-shaped telescopic rod is slidably arranged between the inner walls of the arc-shaped compression barrel.

[0025] The rotating sleeve is arranged on the outer surface of the column and rotatably connected with the column, the telescopic end of the arc-shaped telescopic rod is fixedly connected with the circumferential outer surface of the rotating sleeve, and the inner wall of the rotating sleeve is provided with an annular groove.

[0026] The top block is arranged in the annular groove and fixedly connected with the inner wall of the annular groove, two inclined angles are arranged on one end of the top block close to the column, and the two inclined angles are abutted against the baffle.

[0027] The first spring is arranged in the barrel, one end of the first spring is abutted against the lower surface of the piston, and the other end of the first spring is abutted against the bottom wall of the barrel.

[0028] As a further scheme of the present application, the arc-shaped compression barrel and the piston are arranged at the same center, the column, the barrel and the rotating sleeve are arranged at the same center, and the bottom end of the rod body penetrates the bottom end of the barrel.

[0029] As a further scheme of the present application, the circumferential outer surface of the base is equidistantly provided with a plurality of second grooves, the inner walls of the plurality of second grooves are slidably provided with clamps, the outer surfaces of the clamps away from the center of the base are fixedly provided with connecting plates, the lower surfaces of the connecting plates are fixedly provided with first guide columns, the first guide columns are slidably provided with the inner walls of the guide grooves, and the outer surfaces of the clamps are provided with mounting grooves.

[0030] As a further scheme of the present application, the inside of the mounting groove is provided with an adjusting unit for adjusting the position of the graphite product, and the adjusting unit comprises:

[0031] The column is arranged in the second groove and fixedly connected with the groove bottom of the second groove, and the outer surface of the column close to the clamp is provided with a groove.

[0032] The wave plate is fixedly arranged on the groove bottom of the groove, and the surface of the wave plate is uniformly provided with a plurality of pits.

[0033] The rotating block is rotatably arranged between the inner walls of the mounting groove, one end of the rotating block is arranged in the second groove, and the upper surface of the rotating block is provided with a sliding groove.

[0034] A guide wheel is rotatably installed on the outer surface of the opposite two sides of the rotating block, and the guide wheel is in abutment with the outer surface of the side of the stand column close to the clamping plate;

[0035] A sliding block is slidably installed between the inner walls of the sliding groove, and the lower surface of the graphite product is in abutment with the upper surface of the sliding block;

[0036] A top rod is fixedly installed on the end of the sliding block close to the stand column, and one end of the top rod is in abutment with the pit on the surface of the wave plate;

[0037] A second spring is arranged in the interior of the sliding groove, one end of the second spring is fixedly connected with the outer surface of the sliding block, and the other end of the second spring is fixedly connected with the inner wall of the end of the sliding groove away from the stand column;

[0038] A third spring is arranged in the second groove, one end of the third spring is fixedly connected with the lower surface of the rotating block, and the other end of the third spring is fixedly connected with the outer surface of the clamping plate.

[0039] As a further scheme of the present application, the rotating block is provided with an inclined angle relative to the clamping plate.

[0040] When the marking core moves close to the lower surface of the graphite product, the marking core can mark the lower surface of the graphite product with marking points, and can mark the lower surface of the graphite product with different numbers of marking points according to the spacing of the gap, so as to clearly determine the warping degree and position of the lower surface of the graphite product. When the graphite product is ground, the warping position of the lower surface of the graphite product can be positioned and the warping size can be determined. When the graphite product is turned over for grinding, the operator can adjust the feed amount of the grinding wheel quickly according to the warping height, thereby reducing the time for adjusting the feed amount of the grinding wheel and improving the grinding processing speed of the graphite product. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 The present application provides a graphite product grinding clamp, which has the advantages that the graphite product grinding clamp can mark the lower surface of the graphite product with marking points, and can mark the lower surface of the graphite product with different numbers of marking points according to the spacing of the gap, so as to clearly determine the warping degree and position of the lower surface of the graphite product. When the graphite product is ground, the warping position of the lower surface of the graphite product can be positioned and the warping size can be determined. When the graphite product is turned over for grinding, the operator can adjust the feed amount of the grinding wheel quickly according to the warping height, thereby reducing the time for adjusting the feed amount of the grinding wheel and improving the grinding processing speed of the graphite product.

[0042] Figure 2 The present application provides a graphite product grinding clamp, which has the advantages that the graphite product grinding clamp can mark the lower surface of the graphite product with marking points, and can mark the lower surface of the graphite product with different numbers of marking points according to the spacing of the gap, so as to clearly determine the warping degree and position of the lower surface of the graphite product. When the graphite product is ground, the warping position of the lower surface of the graphite product can be positioned and the warping size can be determined. When the graphite product is turned over for grinding, the operator can adjust the feed amount of the grinding wheel quickly according to the warping height, thereby reducing the time for adjusting the feed amount of the grinding wheel and improving the grinding processing speed of the graphite product.

[0043] Figure 3 The present application provides a graphite product grinding clamp, which has the advantages that the graphite product grinding clamp can mark the lower surface of the graphite product with marking points, and can mark the lower surface of the graphite product with different numbers of marking points according to the spacing of the gap, so as to clearly determine the warping degree and position of the lower surface of the graphite product. When the graphite product is ground, the warping position of the lower surface of the graphite product can be positioned and the warping size can be determined. When the graphite product is turned over for grinding, the operator can adjust the feed amount of the grinding wheel quickly according to the warping height, thereby reducing the time for adjusting the feed amount of the grinding wheel and improving the grinding processing speed of the graphite product.

[0044] Figure 4 The present application provides a graphite product grinding clamp, which has the advantages that the graphite product grinding clamp can mark the lower surface of the graphite product with marking points, and can mark the lower surface of the graphite product with different numbers of marking points according to the spacing of the gap, so as to clearly determine the warping degree and position of the lower surface of the graphite product. When the graphite product is ground, the warping position of the lower surface of the graphite product can be positioned and the warping size can be determined. When the graphite product is turned over for grinding, the operator can adjust the feed amount of the grinding wheel quickly according to the warping height, thereby reducing the time for adjusting the feed amount of the grinding wheel and improving the grinding processing speed of the graphite product.

[0045] Figure 5 The present application provides a graphite product grinding clamp, which has the advantages that the graphite product grinding clamp can mark the lower surface of the graphite product with marking points, and can mark the lower surface of the graphite product with different numbers of marking points according to the spacing of the gap, so as to clearly determine the warping degree and position of the lower surface of the graphite product. When the graphite product is ground, the warping position of the lower surface of the graphite product can be positioned and the warping size can be determined. When the graphite product is turned over for grinding, the operator can adjust the feed amount of the grinding wheel quickly according to the warping height, thereby reducing the time for adjusting the feed amount of the grinding wheel and improving the grinding processing speed of the graphite product.

[0046] Figure 6 A limiting unit of a graphite product grinding clamp according to the present application is shown in the figure;

[0047] Figure 7 A column of a graphite product grinding clamp according to the present application is shown in the figure;

[0048] Figure 8 A column cross-sectional view of a graphite product grinding clamp according to the present application is shown in the figure;

[0049] Figure 9 A piston of a graphite product grinding clamp according to the present application is shown in the figure;

[0050] Figure 10 A marking core of a graphite product grinding clamp according to the present application is shown in the figure;

[0051] Figure 11 A Figure 5 A local enlarged view of B in the figure;

[0052] Figure 12 An adjusting unit of a graphite product grinding clamp according to the present application is shown in the figure;

[0053] Figure 13 A rotating block of a graphite product grinding clamp according to the present application is shown in the figure;

[0054] Figure 14 A top rod of a graphite product grinding clamp according to the present application is shown in the figure;

[0055] Figure 15 A Figure 3 A local enlarged view of A in the figure.

[0056] In the figure:

[0057] 100, base; 110, through hole; 111, partition plate; 120, first groove; 130, second groove;

[0058] 200, graphite product;

[0059] 300, first driving unit; 310, rotating disc; 311, guide groove; 320, pneumatic telescopic rod;

[0060] 400, column; 410, first hole; 420, protrusion; 430, opening; 440, rod body;

[0061] 500, marking core; 510, baffle; 520, tension spring;

[0062] 600, clamping plate; 610, first guide column; 620, mounting groove;

[0063] 700, second driving unit; 710, arc-shaped compression cylinder; 720, arc-shaped telescopic rod; 730, guide pipe; 740, rotating sleeve; 741, annular groove; 750, top block; 751, bevel; 760, piston; 770, cylinder body; 780, first spring;

[0064] 800, limiting unit; 810, sliding rod; 820, stop block; 830, second guide column;

[0065] 900, adjusting unit; 910, stand; 920, rotating block; 921, sliding groove; 930, guide wheel; 940, sliding block; 950, top rod; 960, second spring; 970, wave plate; 980, third spring. DETAILED DESCRIPTION

[0066] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0067] In order to mark the gap between the lower surface of the graphite disc and the upper surface of the fixture workbench after the graphite disc is placed on the fixture workbench, as shown in Figures 1-3 The embodiment of the present application discloses a graphite product grinding fixture, which comprises a base 100, a plurality of column bodies 400, a plurality of marking cores 500 and a second driving unit 700. In use, an operator places the base 100 on the workbench of a surface grinding machine, then fixes the position of the base 100, and then places a graphite product 200 on the upper surface of the base 100. After the position of the graphite product 200 is fixed, the upper surface of the graphite product 200 is ground by a grinding wheel on the surface grinding machine. When there is a gap between the contact surface between the lower surface of the graphite product 200 and the upper surface of the base 100, a plurality of through holes 110 are formed in the interior of the base 100, and the plurality of column bodies 400 are arranged in the interior of the through holes 110. The top end of the column body 400 abuts against the lower surface of the graphite product 200, so that the plurality of column bodies 400 can support the graphite product 200, so that the graphite product 200 will not vibrate due to the gap during grinding, and the stability of the grinding of the graphite product 200 is ensured. As shown in Figure 4As shown, in order to mark the position and gap size of the gap between the graphite product 200 and the base 100, a plurality of first holes 410 are formed in the interior of the plurality of columns 400, a plurality of marking cores 500 are arranged in the interior of the first holes 410, a second driving unit 700 is arranged in the through hole 110, the marking core 500 and the second driving unit 700 are coupled, and the second driving unit 700 is arranged to drive the marking core 500 to move along the central axis of the column 400 when it is extruded by the column 400 (the specific driving mode is described below), when the marking core 500 moves close to the lower surface of the graphite product 200, the marking core 500 can mark the lower surface of the graphite product 200 with marking points, and can mark the lower surface of the graphite product 200 with different numbers of marking points according to the gap size, so as to clearly determine the warping degree and position of the lower surface of the graphite product 200. Through the device, the warping position of the lower surface of the graphite product 200 can be positioned and the size of the warping can be determined when the graphite product 200 is ground. When the graphite product 200 is turned over and ground, the operator can quickly adjust the feed amount of the grinding wheel according to the warping height, which reduces the time for adjusting the feed amount of the grinding wheel and improves the grinding processing speed of the graphite product 200.

[0068] In order to enable the column 400 to support the lower surface of the graphite product 200, as shown in Figure 4 and Figure 7 The inner wall of the through hole 110 is fixedly installed with a partition plate 111, a circular groove is formed through the outer surface of the partition plate 111, the column 400 is arranged in the interior of the circular groove and is slidingly installed with the inner wall of the circular groove, when the graphite product 200 is placed on the upper surface of the base 100, the lower surface of the graphite product 200 will press the top end of the column 400 to move downward, by forming a limiting groove in the inner wall of the circular groove, the circumferential outer surface of the column 400 is provided with a protrusion 420, the protrusion 420 is slidingly installed with the inner wall of the limiting groove, and the column 400 can only move up and down. After the column 400 supports the graphite product 200, in order to ensure stable support, as shown in Figure 4 and Figure 8 The bottom end of the column 400 is fixedly installed with a rod body 440, a plurality of first grooves 120 are formed in the interior of the base 100, as shown in Figure 6As shown, the first slot 120 is internally provided with a limiting unit 800 for fixing the position of the column body 400. Specifically, the limiting unit 800 includes a sliding rod 810, a stop block 820, and a second guide column 830. The sliding rod 810 is arranged inside the first slot 120 and is slidingly installed with the inner wall of the first slot 120. The stop block 820 is arranged inside the through hole 110 and is fixedly connected with the inner wall of the through hole 110. The rod body 440 is arranged between the sliding rod 810 and the stop block 820. The second guide column 830 is fixedly installed on the upper surface of the end of the sliding rod 810 away from the rod body 440. The second guide column 830 is arranged to be able to drive the sliding rod 810 to move along the central axis of the first slot 120 when it is forced to move. When the sliding rod 810 moves close to the rod body 440, the rod body 440 is clamped between the sliding rod 810 and the stop block 820, thereby clamping the rod body 440, and the position of the column body 400 is fixed. In addition, the cross section of the first slot 120 and the sliding rod 810 is rectangular, so that the sliding rod 810 can only move along the central axis of the first slot 120.

[0069] In order to make the second guide column 830 force the sliding rod 810 to move and fix the position of the column body 400, as shown in Figure 2 and Figure 3 As shown, the base 100 is provided with a first driving unit 300 for driving the second guide column 830 to move. Specifically, the first driving unit 300 includes a rotating disc 310 and a pneumatic telescopic rod 320. The rotating disc 310 is rotatably installed on the circumferential outer surface of the base 100. A plurality of guide grooves 311 are equidistantly arranged on the circumferential direction of the upper surface of the rotating disc 310. The second guide column 830 is slidingly installed with the inner wall of the guide groove 311. One end of the pneumatic telescopic rod 320 is fixedly connected with the circumferential outer surface of the base 100. The telescopic end of the pneumatic telescopic rod 320 is rotatably connected with the upper surface of the rotating disc 310. When it is necessary to clamp and fix the rod body 440, the telescopic end of the pneumatic telescopic rod 320 is elongated to drive the rotating disc 310 to rotate around the central axis of the base 100, thereby driving the guide groove 311 to move. Through the cooperation of the guide groove 311 and the second guide column 830, the sliding rod 810 is driven to move close to the rod body 440, thereby clamping the rod body 440 between the sliding rod 810 and the stop block 820.

[0070] In order to realize the coupling of the marking core 500 and the second driving unit 700, so that the marking core 500 can move along the central axis of the column body 400, as shown in Figures 8-10As shown, the circumferential outer surface of the plurality of columns 400 is provided with a plurality of openings 430, the bottom end of the marker core 500 is fixedly installed through the top wall of the opening 430 and is provided with a baffle 510, the lower surface of the baffle 510 is fixedly connected with a tension spring 520, the bottom end of the tension spring 520 is fixedly connected with the bottom wall of the opening 430, when the second driving unit 700 is extruded by the column 400, at least one component inside the second driving unit 700 can drive the baffle 510 to move close to the graphite product 200, so that the baffle 510 drives the marker core 500 to move close to the graphite product 200, so that the top end of the marker core 500 is in contact with the lower surface of the graphite product 200, and the lower surface of the graphite product 200 is marked. The top end of the marker core 500 is a soft pen point, which avoids top injury and top shaking of the graphite product 200.

[0071] In order for at least one component inside the second driving unit 700 to drive the baffle 510 to move close to the graphite product 200, as shown, Figure 4 and Figure 8As shown, the second driving unit 700 comprises a cylinder body 770, a piston 760, an arc-shaped compression cylinder 710, an arc-shaped telescopic rod 720, a rotating sleeve 740, a top block 750 and a first spring 780. The cylinder body 770 is arranged in the through hole 110 and fixedly connected with the inner wall of the through hole 110. The piston 760 is arranged in the interior of the cylinder body 770 and slidably mounted with the inner wall of the cylinder body 770. The piston 760 is fixedly connected with the bottom end of the column body 400. When the graphite product 200 is pressed to the top end of the column body 400, the column body 400 moves downward, so that the piston 760 moves downward. Since the arc-shaped compression cylinder 710 is fixedly mounted on the upper surface of the piston 760, the arc-shaped compression cylinder 710 is connected with the interior of the cylinder body 770 through the conduit 730. The arc-shaped compression cylinder 710, the conduit 730 and the interior of the cylinder body 770 are filled with hydraulic oil. The arc-shaped telescopic rod 720 is slidably mounted between the inner walls of the arc-shaped compression cylinder 710. When the piston 760 moves downward, the hydraulic oil at the bottom of the cylinder body 770 is squeezed, so that the hydraulic oil enters the interior of the arc-shaped compression cylinder 710 through the conduit 730. Due to the entry of the hydraulic oil, the arc-shaped telescopic rod 720 extends from the interior of the arc-shaped compression cylinder 710. The rotating sleeve 740 is sleeved on the outer surface of the column body 400 and rotationally connected with the column body 400. The telescopic end of the arc-shaped telescopic rod 720 is fixedly connected with the circumferential outer surface of the rotating sleeve 740. The arc-shaped compression cylinder 710 and the piston 760 are arranged at the same center. The column body 400, the cylinder body 770 and the rotating sleeve 740 are arranged at the same center. Therefore, the rotating sleeve 740 rotates around the central axis of the column body 400 through the extension movement of the arc-shaped telescopic rod 720. The inner wall of the rotating sleeve 740 is provided with a ring groove 741. The top block 750 is arranged in the ring groove 741 and fixedly connected with the inner wall of the ring groove 741. The top block 750 is provided with two inclined angles 751 close to one end of the column body 400. When the rotating sleeve 740 rotates, the two inclined angles 751 on the baffle 510 abut against the baffle 510, so that the baffle 510 is lifted through the inclined angles 751, and the baffle 510 drives the marking core 500 to move close to the lower surface of the graphite product 200, thereby marking the lower surface of the graphite product 200.

[0072] Six marking cores 500 are arranged in the scheme, when the gap between the lower surface of the graphite product 200 and the upper surface of the base 100 is less than 0.05mm, the six marking cores 500 will all be pushed out of the first hole 410, thereby leaving six marking points on the lower surface of the graphite product 200, and for every 0.05mm increase in the gap between the lower surface of the graphite product 200 and the upper surface of the base 100, one marking point will be less. When the number of marking points is less than six, the gap is greater than 0.3mm, at this time, the graphite product 200 is severely warped, and the operator can determine whether the graphite product 200 is qualified according to the processing tolerance, thereby avoiding grinding the reverse surface and wasting a lot of time. It should be noted that in the scheme, there is a large area difference between the area of the lower surface of the piston 760 and the area of the end surface of the arc-shaped expansion rod 720, and for every 0.05mm decrease in the graphite product 200, the extension distance of the arc-shaped expansion rod 720 can be enlarged, thereby driving the six marking cores 500 to move.

[0073] In order to reset the arc-shaped expansion rod 720, and at the same time, the end of the cylinder 400 can abut against the lower surface of the graphite product 200, as shown in Figure 8 The first spring 780 is arranged in the interior of the cylinder body 770, one end of the first spring 780 abuts against the lower surface of the piston 760, and the other end of the first spring 780 abuts against the bottom wall of the cylinder body 770. The elastic force of the first spring 780 drives the arc-shaped expansion rod 720 to reset and makes the end of the cylinder 400 abut against the lower surface of the graphite product 200, and in order to clamp the rod body 440, the bottom end of the rod body 440 penetrates through the bottom end of the cylinder body 770.

[0074] In order to fix the position of the graphite product 200 after it is placed on the upper surface of the base 100, as shown in Figure 3 and Figure 15 A plurality of second grooves 130 are equidistantly arranged on the circumferential outer surface of the base 100, the inner walls of the plurality of second grooves 130 are slidably installed with clamping plates 600, the outer surface of the clamping plate 600 away from the center of the base 100 is fixedly installed with a connecting plate, the lower surface of the connecting plate is fixedly installed with a first guide column 610, and the first guide column 610 is slidably installed with the inner wall of the guide groove 311. When the rotating disc 310 rotates, the clamping plate 600 is driven to move close to the graphite product 200 through the cooperation of the first guide column 610 and the guide groove 311, thereby clamping the graphite product 200 tightly on the upper surface of the base 100, which is convenient for subsequent grinding processing.

[0075] Because the operator manually places the graphite product 200 on the upper surface of the base 100 when grinding the graphite product 200, there will be errors in manual placement, and the position will be re-aligned when the clamping plate 600 clamps the graphite product 200. At this time, the position marked by the marker core 500 will be offset when the graphite product 200 is first placed, so that the marker core 500 will re-mark other marker points, causing the number of marker points to be disordered, and it is difficult to identify the specific warping degree of the graphite product 200. In order to solve this problem, as shown in Figure 5 、 Figure 11 and Figure 12 , the outer surface of the clamping plate 600 is provided with a mounting groove 620, and the inside of the mounting groove 620 is provided with an adjusting unit 900 for adjusting the position of the graphite product 200. The adjusting unit 900 includes a column 910, a wave plate 970, a rotating block 920, a guide wheel 930, a sliding block 940, a top rod 950, a second spring 960 and a third spring 980. Because the rotating block 920 is rotatably installed between the inner walls of the mounting groove 620, one end of the rotating block 920 is arranged in the inside of the second groove 130, as shown in Figure 14 , the upper surface of the rotating block 920 is provided with a sliding groove 921, and the sliding block 940 is slidingly installed between the inner walls of the sliding groove 921, and the lower surface of the graphite product 200 abuts against the upper surface of the sliding block 940, as shown in Figure 4 , when the operator places the graphite product 200, it is first placed on the upper surface of the sliding block 940, and the graphite product 200 is supported by the plurality of sliding blocks 940, so that it does not contact the upper surface of the base 100 and the top end of the column 400, avoiding that the marker core 500 marks the lower surface of the graphite product 200 when the position of the graphite product 200 is not aligned. As shown in Figure 12 , and because the column 910 is arranged in the second groove 130 and fixedly connected with the groove bottom of the second groove 130, the outer surface of the column 910 close to one side of the clamping plate 600 is provided with a groove, and the wave plate 970 is fixedly installed on the groove bottom of the groove, as shown in Figure 13As shown, the surface of the wave plate 970 is uniformly provided with a plurality of pits, the top rod 950 is fixedly installed at one end of the sliding block 940 close to the column 910, one end of the top rod 950 abuts against the pit on the surface of the wave plate 970, the guide wheel 930 is rotatably installed on the outer surface of the opposite two sides of the rotating block 920, the guide wheel 930 abuts against the outer surface of the side of the column 910 close to the clamp plate 600, when the clamp plate 600 moves close to the graphite product 200 to clamp it, the rotating block 920 will be driven to move close to the column 910, through the action of the guide wheel 930 and the inclined angle of the rotating block 920 relative to the clamp plate 600, the rotating block 920 is driven to rotate downward close to the clamp plate 600, at this time, the rotating block 920 drives the top rod 950 to move downward, because the second spring 960 is arranged in the inside of the sliding groove 921, one end of the second spring 960 is fixedly connected with the outer surface of the sliding block 940, the other end of the second spring 960 is fixedly connected with the inner wall of the end of the sliding groove 921 away from the column 910, when the top rod 950 moves downward, it will always abut against the pit of the wave plate 970 under the action of the second spring 960, when the top rod 950 slides relative to the pit, it will also reciprocatingly slide along the central axis direction of the sliding groove 921, so that the sliding block 940 reciprocatingly slides relative to the outer surface of the graphite product 200, because the angle between the rotating block 920 and the clamp plate 600 will become smaller and smaller as the rotating block 920 rotates downward, and the graphite product 200 will slowly find the central position between the plurality of clamp plates 600 through the gravity of the graphite product 200 itself, so that the position of the graphite product 200 is at the central position between the plurality of clamp plates 600 when it contacts the column body 400, avoiding that the number of marking points is disordered due to the change of position when the marking core 500 marks points subsequently, as the clamp plate 600 continuously clamps and moves, the rotating block 920 will drive the sliding block 940 to completely move into the second groove 130. At the same time, when the graphite product 200 just contacts the top end of the column body 400, the graphite product 200 is adjusted through the graphite product 200, so that the lower surface of the graphite product 200 has a very small relative sliding distance relative to the top end of the column body 400, through the movement of the distance, the dirt between the contact surfaces of the graphite product 200 and the column body 400 is wiped back and forth, avoiding affecting the precision of the subsequent placement of the graphite product 200 on the base 100. In order to limit the sliding block 940 to move only along the central axis direction of the sliding groove 921, the cross-sectional shape of the sliding block 940 and the sliding groove 921 is trapezoidal, and the cross-sectional shape of the cooperation part of the clamp plate 600 and the second groove 130 is also trapezoidal.

[0076] Since the third spring 980 is arranged in the second groove 130, one end of the third spring 980 is fixedly connected with the lower surface of the rotating block 920, and the other end of the third spring 980 is fixedly connected with the outer surface of the clamping plate 600. When the clamping plate 600 is loosened, the clamping plate 600 is slowly slid away from the graphite product 200, and the rotating block 920 is driven to rotate upward by the force of the third spring 980, so that the graphite product 200 is slowly lifted up by the sliding block 940. At this time, since the graphite product 200 is not subjected to other external force, the position of the graphite product 200 is the same as that when the graphite product 200 is clamped, and the graphite product 200 is not deviated, so that the accuracy of the marking point position of the marking core 500 is ensured.

[0077] It should be noted that the clamping surfaces of the clamping plate 600, the sliding rod 810 and the stop block 820 are provided with rubber pads. By the elastic deformation ability of the rubber pads, the travel of the three can be adapted during the clamping movement, and the three are not in completely rigid contact.

[0078] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A graphite product grinding fixture, characterized in that, include: A base (100) is used to support a graphite product (200), and the interior of the base (100) is provided with several through holes (110). Several columns (400) are disposed inside the through hole (110), the columns (400) can support the graphite product (200), and each of the columns (400) has multiple first holes (410) inside. A plurality of marking cores (500) are disposed inside the first hole (410). The plurality of marking cores (500) are configured to mark a number of different marking points on the lower surface of the graphite product (200) according to the size of the gap when there is a gap between the contact surface between the lower surface of the graphite product (200) and the upper surface of the base (100). The second drive unit (700) is disposed inside the through hole (110). The marking core (500) is coupled to the second drive unit (700). The second drive unit (700) is configured to drive the marking core (500) to move along the central axis of the column (400) when it is squeezed by the column (400), so that the marking core (500) can mark the lower surface of the graphite product (200) with marking points. A rod (440) is fixedly installed at the bottom end of the column (400). The base (100) has multiple first slots (120) inside. Each first slot (120) contains a limiting unit (800) for fixing the position of the column (400). The limiting unit (800) includes: A slide bar (810) is disposed inside the first groove (120) and is slidably installed against the inner wall of the first groove (120); A stop (820) is disposed inside the through hole (110) and fixedly connected to the inner wall of the through hole (110). The rod (440) is disposed between the slide rod (810) and the stop (820). The second guide post (830) is fixedly installed on the upper surface of the end of the slide rod (810) away from the rod body (440). The second guide post (830) is configured to drive the slide rod (810) to move along the central axis of the first groove (120) when it is moved by force, thereby pressing the rod body (440) between the slide rod (810) and the stop block (820), thereby fixing the position of the post body (400). The second drive unit (700) includes: The cylindrical body (770) is disposed inside the through hole (110) and is fixedly connected to the inner wall of the through hole (110); A piston (760) is disposed inside a cylinder (770) and is slidably mounted to the inner wall of the cylinder (770). The piston (760) is fixedly connected to the bottom end of a column (400). An arc-shaped compression cylinder (710) is fixedly installed on the upper surface of the piston (760), and the arc-shaped compression cylinder (710) is connected to the interior of the cylinder body (770) through a conduit (730); An arc-shaped telescopic rod (720) is slidably installed between the inner walls of an arc-shaped compression cylinder (710); A rotating sleeve (740) is fitted onto the outer surface of the column (400) and is rotatably connected to the column (400). The telescopic end of the arc-shaped telescopic rod (720) is fixedly connected to the outer circumferential surface of the rotating sleeve (740). An annular groove (741) is provided on the inner wall of the rotating sleeve (740). A top block (750) is disposed inside the annular groove (741) and is fixedly connected to the inner wall of the annular groove (741). The top block (750) has two oblique angles (751) at one end near the column (400), and the two oblique angles (751) abut against the baffle (510). A first spring (780) is disposed inside the cylinder (770). One end of the first spring (780) abuts against the lower surface of the piston (760), and the other end of the first spring (780) abuts against the bottom wall of the cylinder (770).

2. The graphite product grinding fixture according to claim 1, characterized in that, A partition plate (111) is fixedly installed on the inner wall of the through hole (110). A circular groove is opened through the outer surface of the partition plate (111). The column (400) is disposed inside the circular groove and is slidably installed on the inner wall of the circular groove. A limiting groove is opened on the inner wall of the circular groove. A protrusion (420) is provided on the outer circumference of the column (400). The protrusion (420) is slidably installed on the inner wall of the limiting groove.

3. The graphite product grinding fixture according to claim 1, characterized in that, The base (100) is provided with a first driving unit (300) that drives the second guide post (830) to move. The first driving unit (300) includes: A turntable (310) is rotatably mounted on the outer circumferential surface of the base (100). Multiple guide grooves (311) are equidistantly provided on the upper surface of the turntable (310) in the circumferential direction. The second guide post (830) is slidably mounted on the inner wall of the guide groove (311). A pneumatic telescopic rod (320) is provided, one end of which is fixedly connected to the outer circumferential surface of the base (100), and the telescopic end of which is rotatably connected to the upper surface of the turntable (310).

4. The graphite product grinding fixture according to claim 1, characterized in that, The outer circumferential surface of each of the several columns (400) is provided with multiple openings (430). The bottom end of the marking core (500) is fixedly installed with a baffle (510) through the top wall of the opening (430). The lower surface of the baffle (510) is fixedly connected with a tension spring (520). The bottom end of the tension spring (520) is fixedly connected to the bottom wall of the opening (430).

5. The graphite product grinding fixture according to claim 1, characterized in that, The arc-shaped compression cylinder (710) and the piston (760) are located at the same center. The column (400), the cylinder (770) and the rotating sleeve (740) are located at the same center. The bottom end of the rod (440) passes through the bottom end of the cylinder (770).

6. The graphite product grinding fixture according to claim 3, characterized in that, The base (100) has a plurality of second grooves (130) equidistantly spaced on its outer circumference. The inner walls of the plurality of second grooves (130) are all slidably fitted with clamps (600). A connecting plate is fixedly installed on the outer surface of the clamps (600) away from the center of the base (100). A first guide post (610) is fixedly installed on the lower surface of the connecting plate. The first guide post (610) is slidably fitted with the inner wall of the guide groove (311). An installation groove (620) is provided through the outer surface of the clamps (600).

7. The graphite product grinding fixture according to claim 6, characterized in that, The mounting groove (620) is internally provided with an adjustment unit (900) for adjusting the position of the graphite product (200), the adjustment unit (900) comprising: The column (910) is set in the second groove (130) and fixedly connected to the bottom of the second groove (130). The outer surface of the column (910) near the clamp (600) has a groove. A corrugated plate (970) is fixedly installed at the bottom of a groove, and the surface of the corrugated plate (970) is uniformly provided with multiple pits; A rotating block (920) is rotatably mounted between the inner walls of the mounting groove (620). One end of the rotating block (920) is located inside the second groove (130). A sliding groove (921) is provided on the upper surface of the rotating block (920). The guide wheel (930) is rotatably mounted on the outer surfaces of opposite sides of the rotating block (920), and the guide wheel (930) abuts against the outer surface of the column (910) on the side near the clamping plate (600); A slider (940) is slidably mounted between the inner walls of a groove (921), and the lower surface of the graphite product (200) abuts against the upper surface of the slider (940). A push rod (950) is fixedly installed at one end of the slider (940) near the column (910), and one end of the push rod (950) abuts against a recess on the surface of the wave plate (970); The second spring (960) is disposed inside the slide groove (921). One end of the second spring (960) is fixedly connected to the outer surface of the slider (940), and the other end of the second spring (960) is fixedly connected to the inner wall of the slide groove (921) away from the column (910). A third spring (980) is disposed in the second groove (130). One end of the third spring (980) is fixedly connected to the lower surface of the rotating block (920), and the other end of the third spring (980) is fixedly connected to the outer surface of the clamping plate (600).

8. The graphite product grinding fixture according to claim 7, characterized in that, The rotating block (920) is tilted relative to the clamping plate (600) at an angle.

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