A thinning machine grinding wheel, grinding wheel assembly and installation method convenient to disassemble

Abstract

This invention discloses a thinning machine grinding wheel, grinding wheel assembly, and installation method that are easy to assemble and disassemble, relating to the field of semiconductor wafer grinding equipment technology. It includes: a grinding wheel body comprising an integrally connected inner ring and an outer ring. The inner ring has an inner mounting hole and multiple notches. The inner mounting hole is located in the middle of the inner ring and is used to fit onto the thinning machine spindle with a clearance fit. Each notch is arranged along the circumference of the inner ring and communicates with the inner mounting hole. The notches are used to avoid corresponding positioning protrusions on the thinning machine spindle during assembly, allowing the positioning protrusions to pass through the notches. After the positioning protrusions have completely passed through the notches, the grinding wheel body can rotate a set angle under external force, causing the notches and positioning protrusions to misalign. The positioning protrusions and the inner ring form an axial limit, preventing the grinding wheel body from detaching from the thinning machine spindle. The structure is simple, operation is convenient, effectively improving assembly efficiency and reducing labor intensity.

Description

Technical Field

[0001] This invention relates to the field of semiconductor wafer grinding equipment technology, and in particular to a thinning machine grinding wheel, grinding wheel assembly and installation method that are easy to disassemble and assemble. Background Technology

[0002] Wafer thinning machines rely on high-speed rotating diamond grinding wheels to grind and thin semiconductor wafers. These grinding wheels are high-frequency consumables, requiring frequent disassembly and replacement during grinding passivation, dressing, and model changes. Existing thinning machine grinding wheels have only a complete circular mounting hole at the center of the wheel base, relying on the complete inner hole for positioning with the spindle. Assembly methods are mainly divided into two categories: one involves axially aligning the entire grinding wheel and directly fitting it onto the spindle from the end along the axis, then securing it with flanges and multiple sets of clamping bolts; the other uses separate flange clamping, with the grinding wheel clamped between the front and rear flanges. Disassembly requires completely removing the flange assembly before taking out the grinding wheel.

[0003] As the requirements for the uptime of semiconductor production line equipment continue to increase, downtime for grinding wheel replacement directly affects the overall production efficiency. Industry research focuses primarily on grinding wheel abrasive formulations, pore structures, and grinding vibration reduction, with fewer improvements made to the grinding wheel mounting hole structure and quick-assembly / disassembly. Traditional, fully-rounded grinding wheels remain the mainstream structure in the market.

[0004] The existing thinning machine grinding wheels with a completely circular inner bore have revealed the following defects in actual use: (1) Assembly and alignment are difficult and disassembly and assembly are time-consuming. The grinding wheel needs to be aligned axially with the spindle as a whole. The tolerance between the inner hole and the spindle is small. When changing the grinding wheel, it is necessary to manually and repeatedly find the coaxial position. Especially for heavy grinding wheels, it is difficult for a single person to align. The downtime for changing the grinding wheel is long, which reduces the equipment uptime. When disassembling, the grinding wheel needs to be completely pulled out along the spindle axis. When the space is interfered with by the surrounding parts, the operation of removing the grinding wheel is restricted.

[0005] (2) The grinding wheel inner hole and the spindle are easily bumped during the disassembly and assembly process. During the axial insertion and extraction process, the inner wall of the grinding wheel is very easy to scrape and bump the outer circle of the spindle, causing scratches on the spindle surface. At the same time, the inner hole of the grinding wheel is prone to chipping and breaking off pieces. After the spindle is scratched, it will directly damage the positioning accuracy, affect the subsequent grinding wheel rotation accuracy, and thus affect the wafer thinning process quality.

[0006] (3) The disassembly and assembly operation is labor-intensive. The grinding wheel of the thinning machine has a certain weight. The entire assembly process requires manual lifting of the grinding wheel to keep it coaxial and aligned until all bolts are pre-tightened. The long-term lifting operation is labor-intensive, and the cooperation of multiple people increases the operating cost.

[0007] (4) Poor spatial adaptability. When pipes, protective covers and other components are arranged around the outer periphery of the spindle, the space in the axial direction is limited, and the complete circular grinding wheel cannot be directly inserted or removed along the axial direction, making disassembly and assembly operations more difficult. Summary of the Invention

[0008] The purpose of this invention is to provide a thinning machine grinding wheel, grinding wheel assembly and installation method that are easy to disassemble and assemble, so as to solve the problems existing in the prior art. It has a simple structure, is easy to operate, effectively improves assembly efficiency and effectively reduces labor intensity.

[0009] To achieve the above objectives, the present invention provides the following solution: This invention provides a thinning machine grinding wheel that is easy to assemble and disassemble, comprising: a grinding wheel body, the grinding wheel body including an integrally connected inner ring and an outer ring, the inner ring having an mounting inner hole and multiple notches, the mounting inner hole being located in the middle of the inner ring, the mounting inner hole being used to fit onto the thinning machine spindle and being able to be clearance-fitted with the thinning machine spindle, each of the notches being arranged along the circumference of the inner ring and communicating with the mounting inner hole, the notches being used to avoid corresponding positioning protrusions on the thinning machine spindle when the grinding wheel body is assembled with the thinning machine spindle, allowing the positioning protrusions to pass through the notches, and after the positioning protrusions have completely passed through the notches, the grinding wheel body can rotate a set angle under the action of external force, causing the notches to be misaligned with the positioning protrusions, the positioning protrusions and the inner ring forming an axial limit to prevent the grinding wheel body from detaching from the thinning machine spindle.

[0010] Preferably, the inner ring and the outer ring are flush with the side of the positioning end face near the main shaft of the thinning machine. The side of the inner ring away from the positioning end face is a limiting end face, and the side of the outer ring away from the positioning end face is a mounting end face. The limiting end face is concave and forms a stepped structure with the mounting end face. The axial distance between the limiting end face and the mounting end face is greater than the axial length of the positioning protrusion.

[0011] Preferably, the notch is an arc notch, and the diameter of the arc notch is larger than the diameter of the positioning protrusion.

[0012] Preferably, each of the notches is arranged in a centrally symmetrical manner along the center of the mounting inner hole.

[0013] Preferably, it further includes an abrasive layer, which is mounted on the mounting end face.

[0014] Preferably, it further includes a first annular water channel, which is disposed between the inner ring and the outer ring and communicates with the water conveying structure on the positioning end face. The first annular water channel is uniformly provided with a plurality of water holes in its circumference, which are used to convey coolant to the abrasive working surface.

[0015] Preferably, the outer ring has a plurality of threaded holes evenly distributed circumferentially on the side near the positioning end face.

[0016] The present invention also provides a thinning machine grinding wheel assembly, comprising: As described above, the thinning machine grinding wheel is easy to disassemble and assemble; A thinning machine spindle is provided with a plurality of positioning protrusions, each of the positioning protrusions being arranged at intervals along the circumferential direction of the thinning machine spindle and protruding from the outer circumferential surface of the spindle; The grinding wheel body is fitted onto the thinning machine spindle through the mounting inner hole. The positioning protrusion of the thinning machine spindle is adapted to the notch of the grinding wheel body, so that the grinding wheel can avoid the positioning protrusion and fit into the spindle through the notch. After rotating at a set angle, the notch and the positioning protrusion are misaligned. The positioning protrusion abuts against the inner ring limiting end face of the grinding wheel in the axial direction to prevent the grinding wheel from detaching from the spindle in the axial direction. The mounting ring plate and multiple connecting bolts are mounted and fixedly connected to the outer circumference of the thinning machine spindle. The side of the mounting ring plate near the grinding wheel body is the positioning end face. The mounting ring plate is provided with multiple through holes in the circumference. The connecting bolts are used to pass through the through holes and be threaded to the threaded holes on the outer ring.

[0017] Preferably, the thinning machine spindle further includes a main water supply pipeline and branch water supply pipes. The mounting ring plate is provided with a second annular water supply groove corresponding to the first annular water supply groove on the side near the grinding wheel body. The second annular water supply groove is sealed and connected to the first annular water supply groove. The main water supply pipeline is located in the middle of the thinning machine spindle. One end of the main water supply pipeline is rotatably and sealedly connected to the coolant source. Each of the branch water supply pipes is evenly arranged along the circumference of the thinning machine spindle, with one end connected to the main water supply pipeline and the other end connected to the second annular water supply groove.

[0018] The present invention also provides a method for installing the thinning machine grinding wheel assembly as described above, comprising the following steps: Assembly process: Align the notches on the inner ring of the grinding wheel with the corresponding positioning protrusions on the spindle of the thinning machine. The grinding wheel body is moved axially so that each of the positioning protrusions passes through the corresponding notch axially. The grinding wheel body is rotated at a set angle around the axis of the thinning machine spindle, so that each notch is misaligned with the corresponding positioning protrusion, and each positioning protrusion abuts against the limiting end face of the inner ring of the grinding wheel in the axial direction, thereby restricting the grinding wheel body from detaching from the spindle in the axial direction and realizing the axial pre-positioning of the grinding wheel body. Each of the connecting bolts is passed through the through holes on the mounting ring plate and threadedly connected to the threaded holes on the outer ring; Tighten all the connecting bolts to apply axial clamping force to press the grinding wheel body tightly against the mounting ring plate, thus completing the installation and fixing of the grinding wheel; Disassembly process: Loosen all the connecting bolts to release the axial clamping force on the grinding wheel body; The grinding wheel body is moved axially so that each of the positioning protrusions abuts against the limiting end face of the inner ring; After removing each of the connecting bolts, rotate the grinding wheel body so that each of the notches is aligned again with each of the positioning protrusions on the main shaft of the thinning machine; Pull the grinding wheel body along the axial direction, and each of the positioning protrusions will disengage from the corresponding notch, allowing the grinding wheel to be removed directly, thus completing the disassembly.

[0019] The present invention achieves the following technical effects compared to the prior art: This invention provides a easily detachable and assembled thinning machine grinding wheel, grinding wheel assembly, and installation method. By setting a notch on the inner ring that matches the positioning protrusion of the spindle, it changes the traditional assembly logic of grinding wheels that can only be inserted and removed axially. During assembly, simply align the notch with the positioning protrusion to easily slip it in, without the need to strictly maintain coaxiality, significantly reducing the difficulty of alignment and the intensity of manual lifting. After rotational misalignment, the positioning protrusion and the limiting end face form a reliable axial limit, which, together with the bolt tightening, achieves a stable installation. This method of fitting first, then rotating, and then locking effectively avoids scratching and bumping between the inner hole and the spindle during disassembly and assembly, protecting the spindle accuracy and the integrity of the grinding wheel base. At the same time, since it no longer relies on long-distance axial linear motion, the requirements for axial installation space are significantly reduced. Even in space-constrained scenarios with dense surrounding pipelines or protective covers, the grinding wheel can be easily and quickly replaced, thereby shortening downtime and improving the overall uptime and production efficiency of semiconductor wafer thinning equipment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of the thinning machine grinding wheel that is easy to disassemble and assemble, provided by the present invention; Figure 2 A schematic diagram of the thinning machine grinding wheel provided by the present invention from another angle; Figure 3 This is a schematic diagram of the structure of the grinding wheel assembly provided by the present invention; Figure 4This is a front sectional view of the grinding wheel assembly provided by the present invention; Figure 5 This is a schematic diagram of the structure of the thinning machine spindle in the grinding wheel assembly provided by the present invention; In the diagram: 1. Grinding wheel body; 2. Inner ring; 3. Outer ring; 4. Mounting inner hole; 5. Notch; 6. First annular water passage groove; 7. Water passage hole; 8. Thinning machine spindle; 9. Positioning protrusion; 10. Mounting ring plate; 11. Main water supply pipeline; 12. Water supply branch pipe; 13. Abrasive layer; 14. Second annular water passage groove. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The purpose of this invention is to provide a thinning machine grinding wheel, grinding wheel assembly and installation method that are easy to disassemble and assemble, so as to solve the problems existing in the prior art. It has a simple structure, is easy to operate, effectively improves assembly efficiency and effectively reduces labor intensity.

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1 This invention provides a thinning machine grinding wheel that is easy to assemble and disassemble, such as... Figures 1-2As shown, it includes: a grinding wheel body 1, which includes an integrally connected inner ring 2 and an outer ring 3. The inner ring 2 is provided with an inner mounting hole 4 and multiple notches 5. The inner mounting hole 4 is located in the middle of the inner ring 2 and is used to fit onto the thinning machine spindle 8 and can be clearance-fitted with the thinning machine spindle 8. Each notch 5 is arranged along the circumference of the inner ring 2 and communicates with the inner mounting hole 4. The notches 5 are used to avoid the corresponding positioning protrusions 9 on the thinning machine spindle 8 when the grinding wheel body 1 is assembled with the thinning machine spindle 8, so that the positioning protrusions 9 can pass through the notches 5. After the positioning protrusions 9 have completely passed through the notches 5, the grinding wheel body 1 can rotate a set angle under the action of external force, so that the notches 5 and the positioning protrusions 9 are misaligned. The positioning protrusions 9 and the inner ring 2 form an axial limit to prevent the grinding wheel body 1 from detaching from the thinning machine spindle 8. By setting the grinding wheel body 1... The inner ring 2 and outer ring 3 are integrally connected, with an inner hole 4 and multiple circumferentially arranged notches 5 on the inner ring 2. This allows the grinding wheel to avoid the positioning protrusion 9 on the spindle during assembly by passing through the notches 5, eliminating the need for strict axial alignment before insertion and removal, thus reducing the difficulty of assembly alignment. After the positioning protrusion 9 passes through the notch 5, rotating the grinding wheel will cause the notch 5 to be misaligned with the positioning protrusion 9. The positioning protrusion 9 and the inner ring 2 form an axial limit, preventing the grinding wheel from detaching from the spindle axially, thus achieving axial pre-positioning of the grinding wheel. The operator does not need to hold the grinding wheel throughout the process, and a single person can complete the loading and unloading operation, significantly reducing the labor intensity of disassembly and assembly, shortening the downtime for grinding wheel replacement, and improving equipment uptime. At the same time, since the notch 5 is only used for assembly avoidance and does not bear the main positioning force during operation, the grinding wheel operates stably and reliably, meeting the requirements of high-speed grinding conditions.

[0026] In a preferred embodiment, the inner ring 2 and the outer ring 3 are flush with the side faces of the positioning end face near the thinning machine spindle 8. The side face of the inner ring 2 away from the positioning end face is the limiting end face, and the side face of the outer ring 3 away from the positioning end face is the mounting end face. The limiting end face is concave, forming a step structure between it and the mounting end face. The axial distance between the limiting end face and the mounting end face is greater than the axial length of the positioning protrusion 9. By making the side face of the inner ring 2 away from the positioning end face concave relative to the side face of the outer ring 3 away from the positioning end face, a step structure is formed between the limiting end face of the inner ring 2 and the mounting end face of the outer ring 3, and the distance between the limiting end face and the mounting end face is... The axial distance is greater than the axial length of the positioning protrusion 9, so that after the positioning protrusion 9 passes through the notch 5 and rotates and is misaligned, the positioning protrusion 9 can rotate into the stepped space between the limiting end face and the outer ring 3, and will not protrude from the mounting end face during the operation of the grinding wheel. The side of the positioning protrusion 9 near the positioning end face of the spindle abuts against the limiting end face of the inner ring 2 in the axial direction, forming a reliable axial limit, which restricts the grinding wheel from detaching from the spindle in the axial direction. This stepped structure can be achieved simply by making the inner ring 2 thinner than the outer ring 3, which is simple to process and does not require additional processing of complex structures such as limiting grooves, thus reducing manufacturing costs, while ensuring the structural strength of the inner ring 2 of the grinding wheel.

[0027] In a preferred embodiment, the notch 5 is an arc notch 5, and the diameter of the arc notch 5 is larger than the diameter of the positioning protrusion 9. By setting the notch 5 as an arc notch 5, and the diameter of the arc notch 5 being larger than the diameter of the positioning protrusion 9, the positioning protrusion 9 can smoothly pass through the notch 5 along the axial direction, avoiding interference and jamming between the positioning protrusion 9 and the edge of the notch 5 during assembly. The arc notch 5 has a smooth outline, no sharp corners, and a good stress state, avoiding stress concentration and cracking of the matrix caused by sharp corner notches 5 when the grinding wheel rotates at high speed, thus ensuring the strength of the grinding wheel during high-speed rotation. At the same time, the dimensional fit between the arc notch 5 and the positioning protrusion 9 ensures the smoothness of assembly and the reliability of positioning.

[0028] In a preferred embodiment, each notch 5 is arranged symmetrically along the center of the mounting inner hole 4. By arranging each notch 5 symmetrically along the center of the mounting inner hole 4, the grinding wheel is subjected to balanced forces during rotational alignment, making rotational alignment and disassembly convenient. At the same time, the symmetrical arrangement helps to ensure the dynamic balance performance of the grinding wheel substrate during high-speed rotation, reduces vibration caused by the asymmetrical arrangement of the notches 5, and ensures the quality of wafer thinning processing.

[0029] In a preferred embodiment, the easily detachable thinning machine grinding wheel further includes an abrasive layer 13. The abrasive layer 13 is installed on the mounting end face. By installing the abrasive layer 13 on the mounting end face of the outer ring 3, the grinding wheel body 1 and the abrasive layer 13 form a complete grinding tool. The abrasive layer 13 is installed on the mounting end face, that is, the side of the outer ring 3 away from the spindle positioning end face, which facilitates the grinding of the wafer by the abrasive layer 13. At the same time, it is easy to replace or repair the abrasive layer 13 after wear, thus reducing the cost of use.

[0030] In a preferred embodiment, the grinding wheel body 1 further includes a first annular water channel 6, which is disposed between the inner ring 2 and the outer ring 3 and communicates with the water supply structure on the positioning end face. The first annular water channel 6 is circumferentially provided with a plurality of water holes 7, which are used to transport coolant to the abrasive working surface. By setting the first annular water channel 6 between the inner ring 2 and the outer ring 3 and communicating with the water supply structure on the positioning end face, the coolant can be transported through the spindle to the first annular water channel 6 inside the grinding wheel body 1, and then uniformly transported to the abrasive working surface through the circumferentially arranged plurality of water holes 7. This realizes the internal supply and uniform distribution of coolant, overcomes the defect of the existing external spray method where the coolant is difficult to uniformly reach the grinding contact area, improves the cooling uniformity and cooling efficiency, effectively reduces the temperature of the grinding area, reduces wafer surface burn and premature passivation of the grinding wheel abrasive layer 13, and stabilizes the wafer thinning process quality.

[0031] In a preferred embodiment, the outer ring 3 has a plurality of threaded holes evenly arranged circumferentially on the side near the positioning end face. By evenly arranging a plurality of threaded holes circumferentially on the side near the positioning end face of the outer ring 3, a connection interface is provided for the connecting bolts, so that the grinding wheel can be fixedly connected to the mounting ring plate 10 on the spindle through the connecting bolts. The even circumferential arrangement of the threaded holes ensures that the grinding wheel is subjected to balanced force when locked, ensuring the fitting accuracy between the end face of the grinding wheel and the mounting ring plate 10, improving the installation rigidity and rotation accuracy of the grinding wheel, and facilitating the quick assembly and disassembly of the grinding wheel.

[0032] Example 2 This embodiment also provides a thinning machine grinding wheel assembly, such as... Figures 3-5 As shown, it includes: The thinning machine grinding wheel is designed for easy disassembly and assembly. The thinning machine spindle 8 has multiple positioning protrusions 9 spaced apart along its circumference, protruding from the outer circumference of the spindle. The grinding wheel body 1 is fitted onto the thinning machine spindle 8 through the mounting inner hole 4. The positioning protrusions 9 of the spindle 8 are matched with the notches 5 of the grinding wheel body 1, allowing the grinding wheel to pass through the notches 5 to avoid the positioning protrusions 9 and fit into the spindle. After rotating a set angle, the notches 5 and positioning protrusions 9 are misaligned, and the positioning protrusions 9 abut against the limiting end face of the inner ring 2 of the grinding wheel in the axial direction to prevent the grinding wheel from detaching from the spindle axially. A mounting ring plate 10 and multiple connecting bolts are also included. The mounting ring plate 10 is fixedly connected to the outer circumference of the thinning machine spindle 8. The side of the mounting ring plate 10 closest to the grinding wheel body 1 is the positioning end face. The circumference of the grinding wheel is provided with multiple through holes. The connecting bolts are used to pass through the through holes and connect with the threaded holes on the outer ring 3. By combining the grinding wheel with the thinning machine spindle 8, a positioning protrusion 9 is provided on the spindle. The grinding wheel is fitted into the spindle through the notch 5 to avoid the positioning protrusion 9. After rotation, the notch 5 and the positioning protrusion 9 are misaligned. The positioning protrusion 9 and the limiting end face of the inner ring 2 abut in the axial direction to achieve axial limiting and pre-positioning. The mounting ring plate 10 is sleeved and fixed on the outer circumference of the spindle. The connecting bolts pass through the through holes of the mounting ring plate 10 and connect with the threaded holes of the outer ring 3 to press the grinding wheel tightly against the mounting ring plate 10, realizing reliable fixing of the grinding wheel and the spindle and torque transmission. The component has a compact structure and is easy to assemble. When disassembling, it is only necessary to loosen the connecting bolts and rotate the grinding wheel to align the notch 5 with the positioning protrusion 9 to remove the grinding wheel, which greatly shortens the grinding wheel replacement time and improves the equipment utilization rate.

[0033] In a preferred embodiment, the thinning machine spindle 8 further includes a main water supply line 11 and branch water supply pipes 12. A second annular water channel 14, corresponding to the first annular water channel 6, is provided on the side of the mounting ring plate 10 near the grinding wheel body 1. The second annular water channel 14 is in sealed communication with the first annular water channel 6. The main water supply line 11 is located in the middle of the thinning machine spindle 8. One end of the main water supply line 11 is rotatably and sealedly connected to the coolant source. Each branch water supply pipe 12 is evenly arranged along the circumference of the thinning machine spindle 8, with one end connected to the main water supply line 11 and the other end connected to the second annular water channel 14. By providing the main water supply line 11 and branch water supply pipes 12 inside the spindle, the mounting ring plate... A second annular water channel 14 corresponding to the first annular water channel 6 is provided on the spindle. Coolant is transported from the coolant source through the main water supply line 11, each water supply branch pipe 12, the second annular water channel 14, the first annular water channel 6 and each water channel 7 to the abrasive working surface, realizing the uniform delivery of coolant from the inside of the spindle to the grinding area of ​​the grinding wheel. The main water supply line 11 is rotatably sealed to the coolant source, ensuring a reliable supply of coolant when the spindle rotates at high speed. Each water supply branch pipe 12 is evenly arranged along the circumference of the spindle, so that the coolant enters the second annular water channel 14 evenly, further improving the cooling uniformity, effectively reducing the temperature of the grinding area, and reducing defects such as wafer surface burn and premature passivation of the grinding wheel abrasive layer 13.

[0034] The present invention also provides a method for installing the above-mentioned thinning machine grinding wheel assembly, comprising the following steps: Assembly process: Align the notches 5 on the inner ring 2 of the grinding wheel with the corresponding positioning protrusions 9 on the main shaft 8 of the thinning machine; move the grinding wheel body 1 along the axial direction so that each positioning protrusion 9 passes through the corresponding notch 5 along the axial direction. The grinding wheel body 1 is rotated at a set angle around the axis of the thinning machine spindle 8, so that each notch 5 is misaligned with the corresponding positioning protrusion 9, and each positioning protrusion 9 abuts against the limiting end face of the inner ring 2 of the grinding wheel in the axial direction, so as to restrict the grinding wheel body 1 from detaching from the spindle in the axial direction, thereby realizing the axial pre-positioning of the grinding wheel body 1. Pass each connecting bolt through the through hole on the mounting ring plate 10 and thread it into the threaded hole on the outer ring 3. Tighten all connecting bolts to apply axial clamping force to press the grinding wheel body 1 tightly against the mounting ring plate 10, thus completing the installation and fixing of the grinding wheel; Disassembly process: Loosen all connecting bolts to release the axial clamping force on the grinding wheel body 1; The grinding wheel body 1 is moved axially so that each positioning protrusion 9 abuts against the limiting end face of the inner ring 2; After removing all connecting bolts, rotate the grinding wheel body 1 so that each notch 5 is aligned again with each positioning protrusion 9 on the thinning machine spindle 8; Pull the grinding wheel body 1 along the axial direction, and each positioning protrusion 9 will disengage from the corresponding notch 5, allowing the grinding wheel to be removed directly, thus completing the disassembly.

[0035] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A thinning machine grinding wheel that is easy to assemble and disassemble, characterized in that: include: The grinding wheel body includes an integrally connected inner ring and an outer ring. The inner ring has a mounting inner hole and multiple notches. The mounting inner hole is located in the middle of the inner ring and is used to fit onto the spindle of a thinning machine, allowing for clearance fitting. Each notch is arranged circumferentially along the inner ring and communicates with the mounting inner hole. The notches are used to avoid corresponding positioning protrusions on the spindle of the thinning machine when the grinding wheel body is assembled with the spindle, allowing the positioning protrusions to pass through the notches. After the positioning protrusions have completely passed through the notches, the grinding wheel body can rotate by a set angle under external force, causing the notches to be misaligned with the positioning protrusions. The positioning protrusions and the inner ring form an axial limit to prevent the grinding wheel body from detaching from the spindle of the thinning machine.

2. The easily detachable and assembleable thinning grinding wheel according to claim 1, characterized in that: The inner ring and the outer ring are flush with the side of the positioning end face near the main shaft of the thinning machine. The side of the inner ring away from the positioning end face is the limiting end face, and the side of the outer ring away from the positioning end face is the mounting end face. The limiting end face is concave and forms a stepped structure with the mounting end face. The axial distance between the limiting end face and the mounting end face is greater than the axial length of the positioning protrusion.

3. The easily detachable and assembleable thinning machine grinding wheel according to claim 2, characterized in that: The notch is an arc notch, and the diameter of the arc notch is larger than the diameter of the positioning protrusion.

4. The easily detachable and assembleable thinning machine grinding wheel according to claim 3, characterized in that: Each of the notches is arranged in a centrally symmetrical manner along the center of the mounting inner hole.

5. The easily disassembled and assembled thinning machine grinding wheel according to claim 4, characterized in that: It also includes an abrasive layer, which is mounted on the mounting end face.

6. The easily detachable and assembleable thinning machine grinding wheel according to claim 5, characterized in that: The grinding wheel body also includes a first annular water channel, which is disposed between the inner ring and the outer ring and is connected to the water supply structure on the positioning end face. The first annular water channel is uniformly provided with a plurality of water holes in its circumference, which are used to transport coolant to the abrasive working surface.

7. The easily detachable and assembleable thinning machine grinding wheel according to claim 6, characterized in that: The outer ring has multiple threaded holes evenly arranged circumferentially on the side near the positioning end face.

8. A thinning machine grinding wheel assembly, characterized in that: include: The easily disassembled and assembled thinning machine grinding wheel as described in claim 7; A thinning machine spindle is provided with a plurality of positioning protrusions, each of the positioning protrusions being arranged at intervals along the circumferential direction of the thinning machine spindle and protruding from the outer circumferential surface of the spindle; The grinding wheel body is fitted onto the thinning machine spindle through the mounting inner hole. The positioning protrusion of the thinning machine spindle is adapted to the notch of the grinding wheel body, so that the grinding wheel can avoid the positioning protrusion and fit into the spindle through the notch. After rotating at a set angle, the notch and the positioning protrusion are misaligned. The positioning protrusion abuts against the inner ring limiting end face of the grinding wheel in the axial direction to prevent the grinding wheel from detaching from the spindle in the axial direction. The mounting ring plate and multiple connecting bolts are mounted and fixedly connected to the outer circumference of the thinning machine spindle. The side of the mounting ring plate near the grinding wheel body is the positioning end face. The mounting ring plate is provided with multiple through holes in the circumference. The connecting bolts are used to pass through the through holes and be threaded to the threaded holes on the outer ring.

9. The thinning machine grinding wheel assembly according to claim 8, characterized in that: The thinning machine spindle also includes a main water supply pipeline and branch water supply pipes. The mounting ring plate is provided with a second annular water supply groove corresponding to the first annular water supply groove on the side near the grinding wheel body. The second annular water supply groove is sealed and connected to the first annular water supply groove. The main water supply pipeline is located in the middle of the thinning machine spindle. One end of the main water supply pipeline is rotatably and sealedly connected to the coolant source. Each of the branch water supply pipes is evenly arranged along the circumference of the thinning machine spindle, with one end connected to the main water supply pipeline and the other end connected to the second annular water supply groove.

10. A method for installing a thinning machine grinding wheel assembly as described in claim 9, characterized in that: Includes the following steps: Assembly process: Align the notches on the inner ring of the grinding wheel with the corresponding positioning protrusions on the spindle of the thinning machine. The grinding wheel body is moved axially so that each of the positioning protrusions passes through the corresponding notch axially. The grinding wheel body is rotated at a set angle around the axis of the thinning machine spindle, so that each notch is misaligned with the corresponding positioning protrusion, and each positioning protrusion abuts against the limiting end face of the inner ring of the grinding wheel in the axial direction, thereby restricting the grinding wheel body from detaching from the spindle in the axial direction and realizing the axial pre-positioning of the grinding wheel body. Each of the connecting bolts is passed through the through holes on the mounting ring plate and threadedly connected to the threaded holes on the outer ring; Tighten all the connecting bolts to apply axial clamping force to press the grinding wheel body tightly against the mounting ring plate, thus completing the installation and fixing of the grinding wheel; Disassembly process: Loosen all the connecting bolts to release the axial clamping force on the grinding wheel body; The grinding wheel body is moved axially so that each of the positioning protrusions abuts against the limiting end face of the inner ring; After removing each of the connecting bolts, rotate the grinding wheel body so that each of the notches is aligned again with each of the positioning protrusions on the main shaft of the thinning machine; Pull the grinding wheel body along the axial direction, and each of the positioning protrusions will disengage from the corresponding notch, allowing the grinding wheel to be removed directly, thus completing the disassembly.

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