Method for polishing inner circle and outer circle of circular ring sheet

Abstract

The invention discloses an annular sheet inner and outer circle polishing method which comprises the steps that firstly, a positioning column is placed on a base module, then a plurality of annular sheet products and annular gaskets are alternately stacked and arranged on the positioning column in a sleeving mode, and a cover plate module covers the annular sheet products to be clamped and fixed; secondly, after the annular sheet product is clamped and fixed by the positioning clamping jig, the positioning column is taken out, and the positioning clamping jig is transferred to an inner circle polishing module or an outer circle polishing module; thirdly, after the positioning and clamping jig is transferred to the inner circle polishing module, a transmission part in the positioning and clamping jig is connected with a transmission system of the inner circle polishing module, and the circular ring sheet product in the positioning and clamping jig can rotate along with the transmission system; and fourthly, after the positioning and clamping jig is transferred to the outer circle polishing module, a transmission part in the positioning and clamping jig is connected with a transmission system of the outer circle polishing module, and the circular ring sheet product in the positioning and clamping jig can rotate along with the transmission system.

Description

Technical field:

[0001] The invention relates to the technical field of polishing processing, in particular to a method for polishing the inner and outer circles of an annular thin slice. Background technology:

[0002] Polishing refers to a processing method that uses mechanical, chemical or electrochemical effects to reduce the surface roughness of a workpiece to obtain a bright and flat surface. It is a modification process of the workpiece surface using polishing tools and abrasive particles or other polishing media. Polishing cannot improve the dimensional accuracy or geometric shape accuracy of the workpiece, but is aimed at obtaining a smooth surface or mirror gloss, and is sometimes used to eliminate gloss (matte). Polishing wheels are usually used as polishing tools. Polishing wheels are generally made of multiple layers of canvas, felt or leather, clamped on both sides by metal circular plates, and the wheel rims are coated with a polishing agent uniformly mixed with micro-powder abrasives and grease. During polishing, the high-speed rotating polishing wheel (circumferential speed of more than 20 m / s) is pressed against the workpiece, causing the abrasive to roll and slightly cut the workpiece surface, thereby obtaining a bright processed surface, and the surface roughness can generally reach Ra0.63~0.01 microns; when a non-greasy matte polishing agent is used, the bright surface can be matted to improve the appearance.

[0003] When the inner circle of a circular workpiece is polished by the traditional polishing method, two types of equipment, inner circle polishing and outer circle polishing, are often required, which is not only inefficient, but also difficult to ensure consistent polishing accuracy. In this regard, the invention patent with the Chinese patent authorization announcement number CN 220592735 U discloses a circular ring polishing machine. In the technical scheme disclosed in the patent, the polishing machine body includes a base, a support block and a polishing mechanism. A support block frame is fixed on one side of the base, and the support block frame is connected to the polishing mechanism frame. The polishing mechanism is connected to a rotating shaft, and its rotating shaft is connected to the frame of a rotating driving device (motor, cylinder) to realize the setting of polishing and grinding; an inner ring grinding block is provided at one end of the rotating shaft, and an outer ring grinding block is provided at the polishing mechanism. The inner ring grinding block and the outer ring grinding block are connected to the inner ring and outer surface of the workpiece (circular ring) to realize the polishing of both sides of the circular ring (inner ring and outer ring), and the structure is synchronously operated to improve the production efficiency.

[0004] However, the existing polishing methods on the market cannot polish the inner and / or outer circles of multiple products at the same time, and it is difficult to ensure the coaxiality of the inner and outer circles of multiple identical products after polishing. Especially for circular thin film products, most of the existing technical solutions are for polishing a single product, and it is impossible to achieve simultaneous polishing of multiple products, resulting in coaxiality deviations between the products after production. For products with high requirements for finished product coaxiality, a large number of unqualified products are prone to occur, such as: CDs.

[0005] In view of this, the inventor proposes the following technical solution. Summary of the invention:

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for polishing the inner and outer circles of an annular thin slice.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: a method for polishing the inner and outer circles of a circular ring sheet, comprising: a positioning clamping fixture, an inner circle polishing module and an outer circle polishing module, wherein the positioning clamping fixture comprises a base module, a positioning column and a cover plate module;

[0008] The specific steps are as follows:

[0009] 1. First, place the positioning column on the base module, then alternately stack multiple circular thin-sheet products and circular ring gaskets on the positioning column, and cover the cover module on the circular thin-sheet products and clamp them to fix them. Use the positioning column to ensure the coaxiality of the stacked circular thin-sheet products and the circular ring gaskets;

[0010] 2. After the positioning clamping fixture has clamped and fixed the annular thin sheet product, remove the positioning column and transfer the positioning clamping fixture to the inner circle polishing module or the outer circle polishing module;

[0011] 3. After the positioning and clamping fixture is transferred to the inner circle polishing module, the transmission component in the positioning and clamping fixture is connected to the transmission system of the inner circle polishing module, so that the annular thin sheet product in the positioning and clamping fixture can rotate with the transmission system;

[0012] 4. After the positioning and clamping fixture is transferred to the outer cylindrical polishing module, the transmission component in the positioning and clamping fixture is connected to the transmission system of the outer cylindrical polishing module, so that the annular thin film product in the positioning and clamping fixture can rotate with the transmission system.

[0013] Furthermore, in the above technical solution, the transmission component includes a lower pressure plate rotatably installed in the base module and used for contacting and pressing the annular sheet product or the annular gasket, an upper pressure plate rotatably installed in the cover module and used for contacting and pressing the annular sheet product or the annular gasket, and a transmission meshing plate arranged in the base module and used for an external transmission system.

[0014] Furthermore, in the above technical solution, a central positioning hole for installing the positioning column is arranged at the center of the lower pressure plate, and a core hole corresponding to the central positioning hole and used for removing the positioning column is arranged at the center of the cover plate module.

[0015] Furthermore, in the above technical solution, a polishing liquid inlet hole is provided on one side of the base module, and a plurality of contact blocks for contacting and supporting the circular thin sheet product are provided on the upper end surface of the lower pressure plate, and there are connected polishing liquid inlet holes between the contact blocks for the polishing liquid to flow into the inner hole of the circular thin sheet product.

[0016] Furthermore, in the above technical solution, at least two first guide columns for assembling the cover module are provided on the base module, and a plurality of pin holes are vertically arranged on the first guide column, as well as pins that can be inserted into the pin holes for limiting the cover module; the cover module is provided with a first guide sleeve for being sleeved on the first guide column and capable of relative sliding.

[0017] Furthermore, in the above technical solution, a fastening spring is sleeved and installed on the first guide column, the lower end of the fastening spring presses against the upper end surface of the cover module, and the upper end of the fastening spring is in pressing contact with the latch through a gasket.

[0018] Furthermore, in the above technical solution, when the positioning clamping fixture clamps and fixes the annular thin film product and the annular gasket, a clamping auxiliary device is used, which includes a bracket, a push plate arranged on the bracket and used to press down the gasket, and a clamping cylinder suspended on the bracket and used to drive the push plate to press the gasket, wherein both ends of the push plate are provided with a clearance hole for the first guide column to pass through, and a clearance groove for the pin to pass through from above the gasket.

[0019] Furthermore, in the above technical solution, the bracket is in the shape of a door frame, and a first positioning slot plate and a second positioning slot plate for positioning the first guide column are provided on both sides of the bracket, and the clamping cylinder is suspended and installed on the top of the bracket.

[0020] Furthermore, in the above technical solution, the inner circle polishing module includes an inner circle polishing machine table for carrying a positioning and clamping fixture, an inner circle driving spindle arranged on the inner circle polishing machine table and used to dock with a transmission component, an inner circle polishing spindle located above the positioning and clamping fixture, and an inner circle polishing tool arranged on the inner circle polishing spindle and capable of extending into the inner hole of the circular thin sheet product, wherein the inner circle polishing tool extends into the inner hole of the circular thin sheet product along the positioning column removal hole.

[0021] Furthermore, in the above technical solution, the outer cylindrical polishing module includes an outer cylindrical polishing machine table for carrying a positioning and clamping fixture, an outer cylindrical driving spindle arranged on the outer cylindrical polishing machine table and used for docking with a transmission component, an outer cylindrical polishing spindle arranged parallel to the side of the positioning and clamping fixture, and an outer cylindrical polishing tool arranged on the outer cylindrical polishing spindle and used for contacting and polishing the outer wall of the annular thin film product, wherein the outer cylindrical polishing spindle and the annular thin film product always maintain axial parallelism.

[0022] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art: in the present invention, a positioning clamping fixture is used to stack and clamp a number of circular thin sheet products together, and the positioning column is used to maintain the coaxiality when the circular thin sheet products are clamped, so as to ensure that the inner circle and the outer circle of multiple circular thin sheet products can be kept consistent after being stacked, and then the positioning clamping fixture is clamped to the inner circle polishing module and the outer circle polishing module in turn, and the inner circle and the outer circle of multiple circular thin sheet products are polished synchronously by the inner circle polishing module and the outer circle polishing module, so as to ensure that the coaxiality and precision of the inner circle and the outer circle of the polished circular thin sheet products are consistent, thereby greatly improving the qualified rate of the finished products and also improving the polishing efficiency. Description of the drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the positioning and clamping fixture in the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the positioning and clamping fixture of the present invention;

[0025] Figure 3 It is a schematic diagram of the exploded structure of the positioning and clamping fixture in the present invention;

[0026] Figure 4 is a diagram of the use state of the clamping auxiliary device of the present invention;

[0027] Figure 5 It is a schematic diagram of the inner circle polishing of the present invention;

[0028] Figure 6 It is a schematic diagram of the internal structure of the present invention during inner circle polishing;

[0029] Figure 7 It is a schematic diagram of the outer circle polishing of the present invention;

[0030] Figure 8 It is an internal schematic diagram of the outer circle polishing of the present invention. Specific implementation method:

[0031] The present invention is further described below in conjunction with specific embodiments and drawings.

[0032] See Figures 1 to 8 As shown, a method for polishing the inner and outer circles of a circular ring sheet is provided, which comprises: a positioning clamping fixture 1, an inner circle polishing module 2 and an outer circle polishing module 3, wherein the positioning clamping fixture 1 comprises a base module 11, a positioning column 12 and a cover module 13;

[0033] The specific steps are as follows:

[0034] 1. First, place the positioning column 12 on the base module 11, then alternately stack a plurality of circular thin-sheet products A and circular gaskets B on the positioning column 12, and clamp the cover module 13 on the circular thin-sheet products A to fix them, and use the positioning column 12 to ensure the coaxiality of the stacked circular thin-sheet products A and the circular gaskets B;

[0035] 2. After the positioning and clamping fixture 1 has clamped and fixed the annular thin sheet product A, the positioning column 12 is removed, and the positioning and clamping fixture 1 is transferred to the inner circle polishing module 2 or the outer circle polishing module 3;

[0036] 3. After the positioning and clamping fixture 1 is transferred to the inner circle polishing module 2, the transmission component 14 in the positioning and clamping fixture 1 is connected to the transmission system of the inner circle polishing module 2, so that the annular thin sheet product A in the positioning and clamping fixture 1 can rotate with the transmission system;

[0037] Fourth, after the positioning and clamping fixture 1 is transferred to the outer cylindrical polishing module 3, the transmission component 14 in the positioning and clamping fixture 1 is connected to the transmission system of the outer cylindrical polishing module 3, so that the annular thin sheet product A in the positioning and clamping fixture 1 can rotate with the transmission system.

[0038] In the above scheme, a plurality of circular thin film products A are stacked together and clamped by using a positioning clamping fixture 1, and the positioning column 12 is used to maintain the coaxiality when the circular thin film products A are clamped, so as to ensure that the inner circle and the outer circle of the plurality of circular thin film products A can be kept consistent after being stacked, and then the positioning clamping fixture 1 is clamped to the inner circle polishing module 2 and the outer circle polishing module 3 in sequence, and the inner circle and the outer circle of the plurality of circular thin film products A are polished synchronously by the inner circle polishing module 2 and the outer circle polishing module 3, so as to ensure that the coaxiality and precision of the inner circle and the outer circle of the polished circular thin film product A are consistent, thereby greatly improving the qualified rate of the finished product and also improving the polishing efficiency.

[0039] In step three and step four, the transmission component 14 includes a lower pressure plate 141 rotatably installed in the base module 11 and used for contacting and pressing the annular sheet product A or the annular gasket B, an upper pressure plate 142 rotatably installed in the cover module 13 and used for contacting and pressing the annular sheet product A or the annular gasket B, and a transmission engagement plate 143 arranged in the base module 11 and used for an external transmission system.

[0040] The center of the lower pressing plate 141 is provided with a center positioning hole 14A for installing the positioning column 12, and the center of the cover plate module 13 is provided with a core hole 13A corresponding to the center positioning hole 14A and used to remove the positioning column 12. The bottom of the lower pressing plate 141 is provided with a locking screw 144 that can penetrate into the center positioning hole 14A to fix the positioning column 12, and the locking screw 144 can be removed from the center of the transmission engagement plate 143. Both ends of the positioning column 12 are provided with threaded holes, and the threaded holes can penetrate the through hole of the positioning column 12.

[0041] In step one, the positioning column 12 is fixed to the center of the lower pressure plate 141 on the base module 11 by means of the locking screw 144. After the annular sheet product A and the annular gasket B are sequentially mounted on the positioning column 12, the cover module 13 is installed on the base module 11, and the stacked annular sheet product A is clamped between the base module 11 and the cover module 13.

[0042] In step 2, the locking screw 144 is first loosened and removed from the bottom of the base module 11, and then the long arm bolt rod is extended from the core hole 13A and locked and fixed with the positioning column 12, so that the positioning column 11 is removed from the core hole 13A.

[0043] A polishing liquid inlet hole 11A is provided on one side of the base module 11, and a plurality of contact blocks 141A for contacting and supporting the annular thin sheet product A are provided on the upper end surface of the lower pressure plate 141, and the contact blocks 141A are connected with the polishing liquid inlet holes 11A for the polishing liquid to flow into the inner hole of the annular thin sheet product A.

[0044] The base module 11 is provided with at least two first guide posts 111 for assembling the cover module 13. The first guide posts 111 are provided with a plurality of pin holes 111A arranged vertically, and a latch 112 that can be inserted into the pin holes 111A and used to limit the cover module 13. The cover module 13 is provided with a first guide sleeve 131 that is sleeved on the first guide posts 111 and can slide relatively. A fastening spring 113 is sleeved on the first guide posts 111, the lower end of which presses against the upper end surface of the cover module 13, and the upper end of which presses against the latch 112 through a gasket 114.

[0045] In step one, after the positioning column 12 is installed on the base module 11, the annular sheet product A and the annular gasket B are first alternately stacked on the positioning column 12 one by one, and then the two first guide sleeves 131 on the cover module 13 are installed on the first guide column 111, and the fastening spring 113 and the gasket 114 are sequentially mounted on the two positioning columns 12, so that the fastening spring 113 is pressed against the cover module 13.

[0046] The base module 11 also includes a chassis 115, a support base 116 arranged in the middle of the chassis 115 and used to position the lower pressure plate 141, a first bearing 117 arranged between the lower pressure plate 141 and the support base 116, and a protective cover 118 sleeved on the outer periphery of the lower pressure plate 141, wherein the polishing liquid inlet hole 11A is arranged on one side of the protective cover 118, and an inspection notch 118A for observing the condition of the lower pressure plate 141 is arranged on the other side of the protective cover 118, and a baffle 119 is installed at the inspection notch 118A around the outer periphery of 141A to intercept the inflow of polishing liquid.

[0047] The cover plate module 13 also includes a top plate 132, a support top seat 133 disposed in the middle of the top plate 132 and used to position the upper pressure plate 142, a top cover 134 disposed on the support top seat 133 and used to suspend and install the upper pressure plate 142, and a second bearing 135 disposed between the support top seat 133 and the upper pressure plate 142.

[0048] In step two, when the positioning and clamping fixture 1 clamps and fixes the annular thin film product A and the annular gasket B, it is completed through a clamping auxiliary device 4, which includes a bracket 41, a push plate 42 arranged on the bracket 41 and used to press down the gasket 114, and a clamping cylinder 43 suspended on the bracket 41 and used to drive the push plate 42 to press the gasket 114, wherein both ends of the push plate 42 are provided with a clearance hole 421 for the first guide column 111 to pass through, and a clearance groove 422 for the pin 112 to pass through from above the gasket 114.

[0049] The bracket 41 is in the shape of a door frame, and the first and second positioning slots 44 and 45 for positioning the first guide column 111 are arranged on both sides of the bracket 41, and the pressing cylinder 43 is suspended and installed on the top of the bracket 41. At least two second guide columns 46 for hanging and rotating and guiding the movement of the push plate 42 are also arranged on the upper end of the bracket 41, and the push plate 42 is provided with a second guide sleeve 47 for the second guide column 46 to pass through.

[0050] After the positioning and clamping fixture 1 is transferred to the clamping auxiliary device 4, it is respectively buckled with the two first guide columns 111 through the first clamping slot plate 44 and the second clamping slot plate 45, and then the clamping cylinder 43 drives the push plate 42 to press down the fastening spring 113 to clamp and fix the annular sheet product A, and the pin 112 is inserted into the pin hole 111A above the gasket 114 to fix the cover plate module 13 on the first guide column 111, so as to clamp and fix the annular sheet product A.

[0051] The inner circle polishing module 2 includes an inner circle polishing machine table 21 for carrying the positioning and clamping fixture 1, an inner circle driving spindle 22 arranged on the inner circle polishing machine table 21 and used for docking with the transmission component 14, an inner circle polishing spindle 23 located above the positioning and clamping fixture 1, and an inner circle polishing tool 24 arranged on the inner circle polishing spindle 23 and capable of extending into the inner hole of the circular thin sheet product A, wherein the inner circle polishing tool 24 extends into the inner hole of the circular thin sheet product A through the hole position taken out of the positioning column 12.

[0052] The outer cylindrical polishing module 3 includes an outer cylindrical polishing machine table 31 for carrying the positioning and clamping fixture 1, an outer cylindrical driving spindle 32 arranged on the outer cylindrical polishing machine table 31 and used for docking with the transmission component 14, an outer cylindrical polishing spindle 33 arranged parallel to the side of the positioning and clamping fixture 1, and an outer cylindrical polishing tool 34 arranged on the outer cylindrical polishing spindle 33 and used for contacting and polishing the outer wall of the annular thin sheet product A, wherein the outer cylindrical polishing spindle 33 and the annular thin sheet product A always maintain axial parallelism.

[0053] In summary, the detailed stacking polishing method of the present invention is as follows:

[0054] The first step is to stack the annular thin-film products A. First, remove the cover module 13 from the base module 11, and insert the positioning column 12 into the central positioning hole 14A of the lower pressing plate 14, and fix the positioning column 12 by inserting the locking screw 144 from the bottom; further, alternately sleeve a plurality of annular thin-film products A and gaskets B onto the positioning column 12 in sequence, and use the positioning column 12 to maintain the coaxiality between each annular thin-film product A; further, install the cover module 13 onto the two first guide columns 111, and sleeve the fastening spring 113 and the gasket 114 onto the first guide columns 111 in sequence. Toward the column 111, and then transfer the positioning clamping fixture 1 to the clamping auxiliary device 4; further, by docking and positioning the two first guide columns 12 of the positioning clamping fixture 1 with the first positioning groove 44 and the second positioning groove 45 of the clamping auxiliary device 4, the clamping cylinder 43 drives the push plate 42 to descend and contact the gasket 114, and pushes the fastening spring 133 to be compressed, and then the pin 112 is inserted into the appropriate pin hole 111A according to the number of the annular sheet products A, thereby completing the fixing of the annular sheet product A to the positioning clamping fixture 1.

[0055] The second step is to polish the inner circle of the annular thin film product A. First, loosen the locking screw 144, and take it out from under the transmission engagement plate 143, and then insert the bolt rod from the core hole 13A to fix it with the positioning column 12, and take the positioning column 12 out of the core hole 13A; further, dock the transmission engagement plate 143 with the inner circle drive spindle 22, and fix the base module 11 with the inner circle polishing machine 21 to complete the clamping of the positioning clamping fixture 1; further, start the inner circle polishing module 2, connect the polishing liquid pipeline to the polishing liquid inlet hole 11A, and lower the inner circle polishing spindle 23 to extend the inner circle polishing tool 24 from the core hole 13A into the inner circle of the annular thin film product A. As the polishing starts, the inner circle polishing spindle 23 rotates synchronously with the inner circle drive spindle 22, and respectively drives the inner circle polishing tool 24 and the positioning clamping fixture 1 to rotate relative to each other. After the inner circle polishing tool 24 contacts the inner circle of the annular thin film product A, the inner circle polishing of the annular thin film product A is achieved.

[0056] The third step is the outer circle polishing of the circular thin slice product A. First, loosen the locking screw 144, and remove the locking screw 144 from the bottom of the transmission engagement plate 143, and then insert the bolt rod from the core hole 13A to fix it with the positioning column 12, and remove the positioning column 12 from the core hole 13A; further, dock the transmission engagement plate 143 with the outer circle drive spindle 32, and fix the base module 11 with the outer circle polishing machine 31 to complete the clamping of the positioning clamping fixture 1; further, start the outer circle polishing module 3, adjust the outer circle polishing tool 34 to contact with the circular thin slice product A, and as the polishing starts, the outer circle polishing spindle 33 and the outer circle drive spindle 32 rotate synchronously, respectively driving the outer circle polishing tool 34 and the positioning clamping fixture 1 to rotate relative to each other, and after the outer circle polishing tool 34 contacts the outer wall of the circular thin slice product A, the outer circle polishing of the circular thin slice product A is achieved.

[0057] There is no particular order between the second step and the third step, and either the inner circle polishing or the outer circle polishing can be performed first.

[0058] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A method for polishing the inner and outer circles of an annular thin slice, characterized in that: include: A positioning clamping fixture (1), an inner circle polishing module (2) and an outer circle polishing module (3), wherein the positioning clamping fixture (1) comprises a base module (11), a positioning column (12) and a cover module (13); The specific steps are as follows:

1. First, place the positioning column (12) on the base module (11), then alternately stack a plurality of annular thin-film products (A) and annular gaskets (B) and sleeve them on the positioning column (12), and cover the cover module (13) on the annular thin-film products (A) and clamp them to fix them, and use the positioning column (12) to ensure the coaxiality of the stacked annular thin-film products (A) and the annular gaskets (B); 2. After the positioning clamping fixture (1) has clamped and fixed the annular thin film product (A), the positioning column (12) is removed, and the positioning clamping fixture (1) is transferred to the inner circle polishing module (2) or the outer circle polishing module (3); 3. After the positioning and clamping jig (1) is transferred to the inner circle polishing module (2), the transmission component (14) in the positioning and clamping jig (1) is connected to the transmission system of the inner circle polishing module (2), so that the annular thin sheet product (A) in the positioning and clamping jig (1) can rotate with the transmission system; Fourth, after the positioning and clamping jig (1) is transferred to the outer cylindrical polishing module (3), the transmission component (14) in the positioning and clamping jig (1) is connected to the transmission system of the outer cylindrical polishing module (3), so that the annular thin sheet product (A) in the positioning and clamping jig (1) can rotate with the transmission system.

2. A method for polishing the inner and outer circles of an annular thin slice according to claim 1, characterized in that: The transmission component (14) comprises a lower pressure plate (141) rotatably mounted in the base module (11) and used for contacting and pressing the annular thin sheet product (A) or the annular gasket (B), an upper pressure plate (142) rotatably mounted in the cover module (13) and used for contacting and pressing the annular thin sheet product (A) or the annular gasket (B), and a transmission engagement plate (143) arranged in the base module (11) and used for an external transmission system.

3. A method for polishing inner and outer circles of annular thin slices according to claim 2, characterized in that: The center of the lower pressing plate (141) is provided with a center positioning hole (14A) for installing the positioning column (12), and the center of the cover plate module (13) is provided with a core extraction hole (13A) corresponding to the center positioning hole (14A) and used for removing the positioning column (12).

4. A method for polishing inner and outer circles of annular thin slices according to claim 2, characterized in that: A polishing liquid inlet hole (11A) is provided on one side of the base module (11), and a plurality of contact blocks (141A) for contacting and supporting the annular thin sheet product (A) are provided on the upper end surface of the lower pressure plate (141), and the contact blocks (141A) are connected with the polishing liquid inlet holes (11A) so that the polishing liquid can flow into the inner hole of the annular thin sheet product (A).

5. The method for polishing the inner and outer circles of an annular thin slice according to claim 1, characterized in that: The base module (11) is provided with at least two first guide columns (111) for assembling the cover module (13); the first guide columns (111) are provided with a plurality of pin holes (111A) arranged vertically, and a latch (112) capable of being inserted into the pin holes (111A) for limiting the position of the cover module (13); the cover module (13) is provided with a first guide sleeve (131) for being sleeved on the first guide column (111) and capable of relatively sliding.

6. A method for polishing the inner and outer circles of an annular thin slice according to claim 5, characterized in that: A fastening spring (113) is sleeved and mounted on the first guide column (111), the lower end of the fastening spring (113) is pressed against the upper end surface of the cover plate module (13), and the upper end of the fastening spring (113) is in pressing contact with the latch (112) via a gasket (114).

7. A method for polishing the inner and outer circles of an annular thin slice according to claim 6, characterized in that: When the positioning clamping fixture (1) clamps and fixes the annular thin sheet product (A) and the annular gasket (B), a clamping auxiliary device (4) is used. The clamping auxiliary device (4) includes a bracket (41), a push plate (42) arranged on the bracket (41) and used to press down the gasket (114), and a pressing cylinder (43) suspended on the bracket (41) and used to drive the push plate (42) to press the gasket (114), wherein both ends of the push plate (42) are provided with a clearance hole (421) for the first guide column (111) to pass through, and a clearance groove (422) for the latch pin (112) to pass through from above the gasket (114).

8. A method for polishing the inner and outer circles of an annular thin slice according to claim 7, characterized in that: The bracket (41) is in the shape of a door frame. A first positioning slot plate (44) and a second positioning slot plate (45) for positioning the first guide column (111) are arranged on both sides of the bracket (41). The pressing cylinder (43) is suspended and installed on the top of the bracket (41).

9. A method for polishing the inner and outer circles of an annular thin slice according to any one of claims 1 to 8, characterized in that: The inner circle polishing module (2) comprises an inner circle polishing machine table (21) for carrying a positioning and clamping fixture (1), an inner circle driving spindle (22) arranged on the inner circle polishing machine table (21) and used for docking with a transmission component (14), an inner circle polishing spindle (23) located above the positioning and clamping fixture (1), and an inner circle polishing tool (24) arranged on the inner circle polishing spindle (23) and capable of extending into the inner hole of the annular thin slice product (A), wherein the inner circle polishing tool (24) extends into the inner hole of the annular thin slice product (A) along the hole position of the positioning column (12).

10. A method for polishing inner and outer circles of annular thin slices according to any one of claims 1 to 8, characterized in that: The outer cylindrical polishing module (3) comprises an outer cylindrical polishing machine table (31) for carrying a positioning and clamping fixture (1), an outer cylindrical driving spindle (32) arranged on the outer cylindrical polishing machine table (31) and used for docking with a transmission component (14), an outer cylindrical polishing spindle (33) arranged parallel to the side of the positioning and clamping fixture (1), and an outer cylindrical polishing tool (34) arranged on the outer cylindrical polishing spindle (33) and used for contacting and polishing the outer wall of the annular thin slice product (A), wherein the outer cylindrical polishing spindle (33) and the annular thin slice product (A) always maintain axial parallelism.

Images