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

Abstract

The utility model discloses an annular sheet inner and outer circle polishing jig which comprises a base module, a cover plate module, a transmission part arranged between the base module and the cover plate module and a positioning column which is arranged in the center of the transmission part in a detachable mode and used for stacking annular sheet products, and the positioning column can be taken out from the cover plate module. According to the utility model, a plurality of annular sheet products are stacked together, clamped and fixed by adopting the positioning and clamping jig, and the coaxiality is kept by utilizing the positioning columns when the annular sheet products are clamped, so that the inner circles and the outer circles of the annular sheet products can be kept consistent after the annular sheet products are stacked; therefore, the inner circle polishing module or the outer circle polishing module can synchronously polish the inner circles and the outer circles of a plurality of circular ring sheet products at the same time, then it is guaranteed that the coaxiality and the precision of the inner circles and the outer circles of the polished circular ring sheet products are consistent, the qualified rate of finished products is greatly increased, and the polishing efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of polishing technology, and specifically to a polishing fixture for the inner and outer circles of a thin annular sheet. Background Technology

[0002] Polishing is a machining method that uses mechanical, chemical, or electrochemical processes to reduce the surface roughness of a workpiece, resulting in a bright and smooth surface. It involves using polishing tools and abrasive particles or other polishing media to refine the surface of a workpiece. Polishing does not improve the dimensional or geometric accuracy of a workpiece; rather, it aims to achieve a smooth surface or a mirror-like finish, and sometimes it is used to eliminate shine (matte finish). Polishing wheels are typically used as the polishing tool. Polishing wheels are generally made of multiple layers of canvas, felt, or leather, clamped on both sides by metal discs. The rim of the wheel is coated with a polishing compound consisting of a uniform mixture of micro-powdered abrasive and grease. During polishing, the high-speed rotating polishing wheel (circumferential speed above 20 m / s) presses against the workpiece, causing the abrasive to roll and perform micro-cutting on the workpiece surface, thereby obtaining a bright machined surface with a surface roughness typically reaching Ra 0.63–0.01 micrometers. When using non-grease-based matte polishing compounds, the bright surface can be matted to improve its appearance.

[0003] When polishing the inner circle of a ring-shaped workpiece, traditional polishing methods often require two separate pieces of equipment: one for inner polishing and one for outer polishing. This is not only inefficient but also makes it difficult to guarantee consistent polishing precision. To address this, Chinese utility model patent CN 220592735 U discloses a ring polishing machine. In this patent's disclosed technical solution, the polishing machine body includes a base, a support block, and a polishing mechanism. A support block frame is fixed to one side of the base, and this frame is connected to the frame of the polishing mechanism. The polishing mechanism is connected to a rotating shaft, which in turn is connected to the frame of a rotary drive device (motor, cylinder), thus achieving the polishing setup. One end of the rotating shaft has an inner ring grinding block, and the polishing mechanism has an outer ring grinding block. The inner and outer ring grinding blocks are connected to the inner and outer surfaces of the workpiece (ring), respectively, enabling polishing of both sides (inner and outer rings) of the ring simultaneously, thereby improving production efficiency.

[0004] However, current polishing methods on the market cannot polish the inner and / or outer circles of multiple products simultaneously, making it difficult to guarantee the coaxiality of the inner and outer circles after polishing multiple identical products. This is especially true for ring-shaped and thin-film products, where existing technical solutions mostly polish a single product, failing to achieve simultaneous polishing of multiple products. This results in deviations in coaxiality between the produced products, easily leading to a large number of defective products for products with high coaxiality requirements, such as CDs.

[0005] In view of the above, the inventors propose the following technical solution. Summary of the Invention

[0006] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a polishing fixture for the inner and outer circles of a thin ring.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a polishing fixture for the inner and outer circles of a circular thin sheet, comprising: a base module, a cover plate module, a transmission component disposed between the base module and the cover plate module, and a positioning post disposed at the center of the transmission component in a detachable manner for stacking circular thin sheet products, the positioning post being removable from the cover plate module.

[0008] Furthermore, in the above technical solution, the transmission component includes a lower pressure plate that is rotatably installed in the base module and is used to contact and press against the circular sheet product, an upper pressure plate that is rotatably installed in the cover plate module and is used to contact and press against the circular sheet product, and a transmission engagement plate that is disposed in the base module and is used to connect to an external transmission system.

[0009] Furthermore, in the above technical solution, the center of the lower pressure plate is provided with a central positioning hole for installing the positioning post, and the center of the cover plate module is provided with a core-retrieving hole corresponding to the central positioning hole and used to remove the positioning post.

[0010] Furthermore, in the above technical solution, a polishing liquid inlet hole is provided on one side of the base module, and a number of contact blocks for contacting and supporting the annular sheet product are provided on the upper end surface of the lower pressure plate, and the contact blocks are connected by a polishing liquid inlet hole so that the polishing liquid can flow into the inner hole of the annular sheet product.

[0011] Furthermore, in the above technical solution, the base module is provided with at least two first guide posts for assembling the cover plate module. The first guide posts are provided with a number of pin holes arranged vertically, and a pin that can be inserted into the pin holes to limit the position of the cover plate module. The cover plate module is provided with a first guide sleeve for being sleeved on the first guide posts and able to slide relative to them.

[0012] Furthermore, in the above technical solution, a fastening spring is sleeved on the first guide post, the lower end of the fastening spring abuts against the upper end surface of the cover plate module, and the upper end of the fastening spring is in contact with the pin through a washer.

[0013] Furthermore, in the above technical solution, there are annular spacers between the annular sheet products, wherein the annular sheet products and the annular spacers are sequentially fitted onto the positioning post.

[0014] Furthermore, in the above technical solution, the annular sheet product is clamped and fixed by a clamping auxiliary device, which includes a bracket, a push plate disposed on the bracket for pressing down the pad, and a clamping cylinder suspended on the bracket for driving the push plate to press the pad.

[0015] Furthermore, in the above technical solution, the push plate is provided with clearance holes for the first guide post to pass through at both ends, and clearance grooves for the pin to pass through from above the gasket.

[0016] Furthermore, in the above technical solution, the bracket is in the shape of a door frame, and the two sides of the bracket are provided with a first positioning groove plate and a second positioning groove plate for positioning the first guide post, and the clamping cylinder is suspended and installed on the top of the bracket.

[0017] After adopting the above technical solution, 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 several annular thin sheet products together. The positioning pins maintain coaxiality when the annular thin sheet products are clamped, ensuring that the inner circle and outer circle of the multiple annular thin sheet products are consistent after being stacked. This enables the inner circle polishing module or the outer circle polishing module to simultaneously polish the inner and outer circles of multiple annular thin sheet products, thereby ensuring that the coaxiality and accuracy of the inner and outer circles of the polished annular thin sheet products are consistent. This not only greatly improves the qualification rate of the finished product, but also improves the polishing efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the positioning and clamping fixture in this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the positioning and clamping fixture in this utility model;

[0020] Figure 3 This is an exploded structural diagram of the positioning and clamping fixture in this utility model;

[0021] Figure 4 This is a diagram showing the usage state of the clamping auxiliary device in this utility model;

[0022] Figure 5 This is a schematic diagram of the inner circle polishing process of this utility model;

[0023] Figure 6 This is a schematic diagram of the internal structure of the present invention during inner circle polishing;

[0024] Figure 7 This is a schematic diagram of the outer circle polishing process of this utility model;

[0025] Figure 8 This is an internal schematic diagram of the outer circle polishing process of this utility model. Detailed Implementation

[0026] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0027] See Figures 1 to 8 As shown, a method for stacking polishing using inner and outer circular polishing fixtures of a circular thin sheet is provided, including: positioning and clamping fixture 1, inner circular polishing module 2 and outer circular polishing module 3, wherein the positioning and clamping fixture 1 includes a base module 11, a positioning post 12 and a cover plate module 13.

[0028] The specific polishing steps are as follows:

[0029] First, place the positioning post 12 on the base module 11, then alternately stack multiple annular thin sheet products A and annular gaskets B on the positioning post 12, and cover the annular thin sheet product A with the cover module 13 and clamp it to fix it. The positioning post 12 is used to ensure the coaxiality of the stacked annular thin sheet product A and annular gasket B.

[0030] 2. After the positioning clamping fixture 1 clamps and fixes the annular thin sheet product A, remove the positioning post 12 and transfer the positioning clamping fixture 1 to the inner circle polishing module 2 or the outer circle polishing module 3.

[0031] 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.

[0032] 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 circular thin sheet product A in the positioning and clamping fixture 1 can rotate with the transmission system.

[0033] In the above scheme, several annular thin sheet products A are stacked together and clamped and fixed by using positioning clamping fixture 1. Positioning pin 12 is used to maintain coaxiality when the annular thin sheet products A are clamped, ensuring that the inner circle and outer circle of the multiple annular thin sheet products A are consistent after stacking. Then, positioning clamping fixture 1 is sequentially clamped to inner circle polishing module 2 and outer circle polishing module 3. The inner circle polishing module 2 and outer circle polishing module 3 perform synchronous polishing on the inner circle and outer circle of the multiple annular thin sheet products A, thereby ensuring that the inner circle and outer circle of the polished annular thin sheet products A are consistent in coaxiality and accuracy, greatly improving the qualification rate of finished products, and also improving polishing efficiency.

[0034] In steps three and four, the transmission component 14 includes a lower pressure plate 141 that is rotatably mounted in the base module 11 and is used to contact and press against the annular sheet product A or the annular gasket B; an upper pressure plate 142 that is rotatably mounted in the cover plate module 13 and is used to contact and press against the annular sheet product A or the annular gasket B; and a transmission engagement plate 143 that is disposed in the base module 11 and is used to connect to an external transmission system.

[0035] The lower pressure plate 141 has a central positioning hole 14A for mounting the positioning post 12, and the cover plate module 13 has a core-retrieving hole 13A corresponding to the central positioning hole 14A for removing the positioning post 12. The bottom of the lower pressure plate 141 has a locking screw 144 that can penetrate into the central positioning hole 14A to fix the positioning post 12, and this locking screw 144 can be removed from the center of the transmission engagement plate 143. Both ends of the positioning post 12 have threaded holes that can penetrate the through hole of the positioning post 12.

[0036] In step one, the positioning post 12 is fixed to the center of the lower pressure plate 141 on the base module 11 by the locking screw 144. After the annular sheet product A and the annular gasket B are sequentially fitted onto the positioning post 12, the cover plate module 13 is installed onto the base module 11, and the stacked annular sheet product A is clamped between the base module 11 and the cover plate module 13.

[0037] In step two, the locking screw 144 is first loosened and removed from the bottom of the base module 11, and then extended from the core-taking hole 13A through the long arm bolt rod and locked and fixed with the positioning post 12, thereby removing the positioning post 11 from the core-taking hole 13A.

[0038] The base module 11 has a polishing liquid inlet hole 11A on one side, and the upper end face of the lower pressure plate 141 is provided with a plurality of contact blocks 141A for contacting and supporting the annular sheet product A, and the contact blocks 141A are connected to the polishing liquid inlet hole 11A so that the polishing liquid can flow into the inner hole of the annular sheet product A.

[0039] The base module 11 is provided with at least two first guide posts 111 for assembling the cover module 13. Each first guide post 111 has a plurality of pin holes 111A arranged vertically, and a pin 112 inserted into the pin holes 111A to limit the position of the cover module 13. The cover module 13 is provided with a first guide sleeve 131 for being fitted onto the first guide posts 111 and capable of relative sliding. A fastening spring 113 is fitted onto the first guide posts 111. The lower end of the fastening spring 113 presses against the upper end face of the cover module 13, and the upper end of the fastening spring 113 is in contact with the pin 112 via a washer 114.

[0040] In step one, after the positioning post 12 is installed on the base module 11, the circular thin sheet product A and the circular gasket B are alternately stacked on the positioning post 12 one by one. Then, the two first guide sleeves 131 on the cover plate module 13 are fitted and installed on the first guide post 111. The fastening spring 113 and the gasket 114 are then fitted onto the two positioning posts 12 in sequence, so that the fastening spring 113 presses against the cover plate module 13.

[0041] The base module 11 further includes a chassis 115, a support base 116 disposed in the middle of the chassis 115 for positioning the lower pressure plate 141, a first bearing 117 disposed between the lower pressure plate 141 and the support base 116, and a protective cover 118 sleeved around the lower pressure plate 141. The polishing liquid inlet 11A is disposed on one side of the protective cover 118, and the other side of the protective cover 118 is provided with an inspection notch 118A for observing the condition of the lower pressure plate 141. A baffle 119 is installed around the inspection notch 118A to intercept the flow of polishing liquid.

[0042] 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 for positioning the upper pressure plate 142, a top cover 134 covered on the support top seat 133 and used for suspending and installing the upper pressure plate 142, and a second bearing 135 disposed between the support top seat 133 and the upper pressure plate 142.

[0043] In step two, when the positioning clamping fixture 1 clamps and fixes the annular sheet product A and the annular gasket B, it is accomplished by a clamping auxiliary device 4. The clamping auxiliary device 4 includes a bracket 41, a push plate 42 disposed on the bracket 41 for pressing down the gasket 114, and a clamping cylinder 43 suspended on the bracket 41 for driving the push plate 42 to press the gasket 114. The push plate 42 has clearance holes 421 at both ends for the first guide post 111 to pass through, and clearance grooves 422 for the pin 112 to pass through from above the gasket 114.

[0044] The bracket 41 is door-frame shaped, and its two sides are provided with a first locking groove plate 44 and a second locking groove plate 45 for positioning the first guide post 111. The clamping cylinder 43 is suspended and installed on the top of the bracket 41. The upper end of the bracket 41 is also provided with at least two second guide posts 46 that are suspended and rotated to guide the movement of the push plate 42. The push plate 42 is provided with a second guide sleeve 47 through which the second guide posts 46 pass.

[0045] After the positioning and clamping fixture 1 is transferred to the clamping auxiliary device 4, it is connected to the two first guide posts 111 by the first positioning slot plate 44 and the second positioning slot plate 45 respectively. Then, the clamping cylinder 43 drives the push plate 42 to press down the fastening spring 113 to clamp and fix the circular thin sheet product A. 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 post 111, thereby achieving the clamping and fixing of the circular thin sheet product A.

[0046] The inner circle polishing module 2 includes an inner circle polishing machine base 21 for supporting the positioning and clamping fixture 1, an inner circle drive spindle 22 disposed on the inner circle polishing machine base 21 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 cutter 24 disposed on the inner circle polishing spindle 23 and capable of extending into the inner hole of the annular sheet product A. The inner circle polishing cutter 24 extends into the inner hole of the annular sheet product A along the extraction hole of the positioning post 12.

[0047] The outer cylindrical polishing module 3 includes an outer cylindrical polishing machine base 31 for supporting the positioning and clamping fixture 1, an outer cylindrical drive spindle 32 disposed on the outer cylindrical polishing machine base 31 for docking with the transmission component 14, an outer cylindrical polishing spindle 33 disposed parallel to the side of the positioning and clamping fixture 1, and an outer cylindrical polishing cutter 34 disposed on the outer cylindrical polishing spindle 33 for contacting and polishing the outer wall of the annular sheet product A. The outer cylindrical polishing spindle 33 and the annular sheet product A are always kept axially parallel.

[0048] In summary, the detailed stacking and polishing method of this utility model is as follows:

[0049] The first step is the stacking of the annular sheet product A. First, the cover plate module 13 is removed from the base module 11, and the positioning pin 12 is inserted into the central positioning hole 14A of the lower pressure plate 14. The positioning pin 12 is then fixed by a locking screw 144 extending from the bottom. Next, multiple annular sheet products A and gaskets B are alternately fitted onto the positioning pin 12, using the positioning pin 12 to maintain the coaxiality between each annular sheet product A. Finally, the cover plate module 13 is installed onto two first guide pins 111, and the fastening spring 113 and gasket 114 are sequentially fitted onto the first guide pins. The positioning clamping fixture 1 is then transferred to the clamping auxiliary device 4 on the column 111. Further, by positioning the two first guide columns 12 of the positioning clamping fixture 1 with the first slot 44 and the second slot 45 of the clamping auxiliary device 4, the pressing cylinder 43 drives the push plate 42 to descend and contact the pad 114, and pushes the fastening spring 133 to compress. Then, according to the number of annular sheet products A, the pin 112 is inserted into the appropriate pin hole 111A, thereby completing the fixing of the annular sheet products A onto the positioning clamping fixture 1.

[0050] The second step is to polish the inner circle of the circular thin sheet product A. First, loosen the locking screw 144 and remove it from below the transmission engagement plate 143. Then, insert the bolt rod through the core-taking hole 13A and fix it to the positioning post 12. Remove the positioning post 12 from the core-taking hole 13A. Next, connect the transmission engagement plate 143 to the inner circle drive spindle 22 and fix the base module 11 to the inner circle polishing machine table 21 to complete the clamping of the positioning clamping fixture 1. Next, start the inner circle polishing module 2, connect the polishing liquid pipe 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-taking hole 13A into the inner circle of the annular sheet product A. As polishing begins, the inner circle polishing spindle 23 and the inner circle drive spindle 22 rotate synchronously, driving 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 sheet product A, the inner circle polishing of the annular sheet product A is achieved.

[0051] The third step is the polishing of the outer diameter of the annular sheet product A. First, loosen the locking screw 144 and remove it from under the transmission engagement plate 143. Then, insert the bolt rod through the core-taking hole 13A and fix it to the positioning post 12. Remove the positioning post 12 from the core-taking hole 13A. Next, connect the transmission engagement plate 143 with the outer diameter drive spindle 32 and fix the base module 11 with the outer diameter polishing machine 31 to complete the clamping of the positioning clamping fixture 1. Next, start the outer diameter polishing module 3 and adjust the outer diameter polishing cutter 34 to contact the annular sheet product A. As polishing begins, the outer diameter polishing spindle 33 and the outer diameter drive spindle 32 rotate synchronously, driving the outer diameter polishing cutter 34 and the positioning clamping fixture 1 to rotate relative to each other. After the outer diameter polishing cutter 34 contacts the outer wall of the annular sheet product A, the outer diameter of the annular sheet product A is polished.

[0052] The second and third steps mentioned above are not in any particular order; you can perform the inner circle polishing first or the outer circle polishing first.

[0053] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A polishing fixture for the inner and outer circles of a thin annular sheet, characterized in that, include: The base module (11), the cover module (13), the transmission component (14) disposed between the base module (11) and the cover module (13), and the positioning post (12) disposed at the center of the transmission component (14) in a detachable manner for stacking the annular sheet product (A), the positioning post (12) being removable from the cover module (13).

2. The polishing fixture for the inner and outer circles of a thin annular sheet according to claim 1, characterized in that: The transmission component (14) includes a lower pressure plate (141) which is rotatably mounted in the base module (11) and is used to contact and press against the annular sheet product (A); an upper pressure plate (142) which is rotatably mounted in the cover plate module (13) and is used to contact and press against the annular sheet product (A); and a transmission engagement plate (143) which is disposed in the base module (11) and is used to connect to an external transmission system.

3. The polishing fixture for the inner and outer circles of a thin annular sheet according to claim 2, characterized in that: The lower pressure plate (141) has a central positioning hole (14A) for installing the positioning post (12) and the cover plate module (13) has a core hole (13A) corresponding to the central positioning hole (14A) for removing the positioning post (12).

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

5. A polishing fixture for the inner and outer circles of a thin annular sheet according to claim 1, characterized in that: The base module (11) is provided with at least two first guide posts (111) for assembling the cover module (13). The first guide post (111) is provided with a plurality of pin holes (111A) arranged vertically, and a pin (112) that can be inserted into the pin holes (111A) for limiting the cover module (13). The cover module (13) is provided with a first guide sleeve (131) for being sleeved on the first guide post (111) and able to slide relative to it.

6. A polishing fixture for the inner and outer circles of a thin annular sheet according to claim 5, characterized in that: A fastening spring (113) is fitted on the first guide post (111). The lower end of the fastening spring (113) presses against the upper end face of the cover plate module (13), and the upper end of the fastening spring (113) is in contact with the pin (112) through a gasket (114).

7. A polishing fixture for the inner and outer circles of a thin annular sheet according to any one of claims 1-6, characterized in that: The annular sheet products (A) are spaced by annular gaskets (B), wherein the annular sheet products (A) and the annular gaskets (B) are sequentially fitted onto the positioning post (12).

8. A polishing fixture for the inner and outer circles of a thin annular sheet according to claim 7, characterized in that: The circular sheet product (A) is clamped and fixed by a clamping auxiliary device (4). The clamping auxiliary device (4) includes a bracket (41), a push plate (42) disposed on the bracket (41) and used to press down the pad (114), and a clamping cylinder (43) suspended on the bracket (41) and used to drive the push plate (42) to press the pad (114).

9. A polishing fixture for the inner and outer circles of a thin annular sheet according to claim 8, characterized in that: The push plate (42) has clearance holes (421) for the first guide post (111) to pass through, and clearance grooves (422) for the pin (112) to pass through from above the gasket (114).

10. A polishing fixture for the inner and outer circles of a thin annular sheet according to claim 8, characterized in that: The bracket (41) is in the shape of a door frame. The bracket (41) has a first positioning groove plate (44) and a second positioning groove plate (45) on both sides for positioning the first guide post (111). The pressing cylinder (43) is suspended and installed on the top of the bracket (41).

Images