Roller grinding device

Abstract

This invention relates to the field of roll grinding technology, and provides a roll grinding device, which includes a machine tool body. A mounting base is fixedly installed on the transverse slide of the machine tool body. The device also includes a support, a grinding wheel assembly, an outer protective cover, and a limiting component. The support is fixedly installed on the mounting base, and a transmission shaft is rotatably installed inside the support. The grinding wheel assembly is installed at one end of the transmission shaft, and a flexible compensation structure is provided inside the grinding wheel assembly. The outer protective cover is fixedly installed at one end of the support, and is located at the end where the grinding wheel assembly is installed. The grinding wheel assembly is located inside the outer protective cover, and the limiting component is installed on the outer protective cover. Through the above technical solution, the technical problem in the prior art that the grinding wheel is prone to vibration when grinding uneven areas of the roll, which can easily lead to grinding wheel breakage and thus affect the grinding quality of the roll is solved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of roll grinding technology, specifically, to a roll grinding device. Background Technology

[0002] A rolling mill roll is mainly composed of three parts: the roll body, the roll neck, and the shaft end. The roll body is the middle part of the roll that actually participates in rolling the metal. It has a smooth cylindrical or grooved surface. The roll neck is installed in the bearing and transmits the rolling force to the frame through the bearing seat and the pressing device, thus playing a supporting role. The shaft end at the transmission end is connected to the gear seat through the connecting shaft, which is used to transmit the rotational torque of the motor to the roll.

[0003] In the existing technology, in order to improve the surface quality of the rolls and achieve the required surface roughness, the rolls need to be ground and polished during the production of rolls. At the same time, the rolls will wear out after long-term use, and the roll body also needs to be ground and repaired to ensure the surface accuracy of the roll body and the rolling effect.

[0004] However, during roll dressing, the uneven surface of the roll can easily cause vibration when the grinding wheel reaches a deep pit. This vibration can lead to uneven stress and wheel breakage. Furthermore, the grinding process can cause vibration marks on the roll surface, affecting the grinding quality. To ensure grinding quality, the roll is usually divided into several grinding sections, with priority given to grinding the deep pit areas before overall reshaping. This reduces the risk of grinding wheel breakage. However, this method is cumbersome, the path planning is very time-consuming, and the segmented grinding can create height differences in the transition zone, further affecting the grinding quality. Summary of the Invention

[0005] To overcome the above-mentioned defects, the present invention provides a roll grinding device to solve the technical problem that the grinding wheel in the prior art is prone to vibration when grinding uneven areas of the roll, which can easily lead to the breakage of the grinding wheel and thus affect the grinding quality of the roll.

[0006] The technical solution of the present invention is as follows:

[0007] A roll grinding device includes a machine tool body, on which a mounting base is fixedly installed, and further includes:

[0008] The support is fixedly mounted on the mounting base, and a drive shaft is rotatably mounted inside the support;

[0009] A grinding wheel assembly is installed at one end of the drive shaft for grinding the roll. The grinding wheel assembly has a flexible compensation structure inside for automatically adjusting the radial position between the grinding wheel assembly and the roll during grinding.

[0010] An outer protective cover is fixedly installed at one end of the support, and the outer protective cover is located at the end where the grinding wheel assembly is installed, with the grinding wheel assembly located inside the outer protective cover;

[0011] A limiting component is mounted on the outer cover to limit the relative position of the grinding wheel assembly and the drive shaft.

[0012] Based on the aforementioned solution, the grinding wheel assembly includes:

[0013] A positioning retaining ring is coaxially and fixedly mounted on the drive shaft.

[0014] A mounting retaining ring is coaxially and detachably mounted on the drive shaft;

[0015] A grinding wheel is coaxially disposed between the mounting retaining ring and the positioning retaining ring, and a mounting hole is coaxially formed in the middle of the grinding wheel.

[0016] Based on the aforementioned solution, to avoid grinding wheel breakage during roll repair, the flexible compensation structure includes:

[0017] A positioning outer ring is coaxially and fixedly installed inside the mounting hole;

[0018] A positioning inner ring is coaxially and detachably mounted on one end of the drive shaft, and the positioning inner ring is arranged coaxially with the positioning outer ring;

[0019] A flexible ring is fixedly installed between the positioning inner ring and the positioning outer ring. The flexible ring has several polygonal holes evenly arranged inside it. The parts of the positioning outer ring and the positioning inner ring that contact the flexible ring are provided with annular assembly grooves for limiting the axial displacement of the flexible ring.

[0020] An abutment frame is provided between the positioning retaining ring and the positioning inner ring. The abutment frame is fitted on the drive shaft. One end of the abutment frame is fixedly connected to the positioning retaining ring, and the other end of the abutment frame abuts against the positioning inner ring. The mounting retaining ring abuts against the other end of the positioning inner ring.

[0021] Based on the aforementioned solution, the limiting component includes:

[0022] The limiting frame has two limiting frames fixedly installed inside the outer cover, and the two limiting frames are symmetrically arranged relative to the drive shaft.

[0023] A positioning ring is coaxially fixedly installed at one end of the positioning outer ring. The positioning ring is located between the positioning outer ring and the abutment frame, and there is an axial gap between the positioning ring and the abutment frame.

[0024] The limiting part is fixedly installed inside both limiting frames to keep the positioning ring coaxial with the transmission shaft during rotation.

[0025] Based on the aforementioned solution, the limiting part includes:

[0026] The driving component is fixedly installed inside both of the limiting frames;

[0027] The support frame is fixedly installed on the output ends of both drive components;

[0028] Two rollers are symmetrically and rotatably mounted on each of the two support frames. Each roller is fitted with a rubber sleeve. When the drive component pushes the support frame to the working position, the rubber sleeve contacts the positioning ring.

[0029] Based on the aforementioned solution, a drive device is also included. The drive device is fixedly mounted on the mounting base, and the output end of the drive device is fixedly connected to the end of the transmission shaft away from the outer protective cover to provide power.

[0030] The beneficial effects of the embodiments of the present invention are as follows:

[0031] 1. In this invention, during the grinding process, when the grinding wheel is subjected to pressure, the polygonal hole in the flexible ring deforms, maintaining the pressure of the grinding wheel on the roll stable, and simultaneously dissipating the impact force generated when grinding to the pitted area of ​​the roll, reducing the occurrence of vibration marks and improving the grinding quality.

[0032] 2. In this invention, two driving components synchronously drive the corresponding support frame to move until the rubber sleeves on the two rollers on the support frame abut against the positioning ring. During the rotation of the grinding wheel, the positioning ring can be driven to rotate, and the rollers and the rubber sleeves on the rollers rotate at the same time, which plays a role in stabilizing the pressure and increasing the support force. Thus, the relative position of the drive shaft and the positioning outer ring is determined during the grinding process, so as to improve the grinding accuracy and stabilize the dimensional uniformity of the roll.

[0033] 3. In this invention, the adaptive vibration elimination function of the flexible compensation structure and the locking of the rotation position of the grinding wheel by the limiting component can cover most working conditions, reduce the occurrence of grinding wheel breakage when the grinding wheel is in the deep pit position of the grinding roller, and greatly improve the grinding quality. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0035] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the overall structure from another angle in this invention;

[0037] Figure 3 This is a schematic diagram of the grinding wheel assembly in this invention;

[0038] Figure 4 This is a schematic diagram of the grinding wheel assembly from another angle in this invention;

[0039] Figure 5 This is a cross-sectional view of the mating structure of the grinding wheel assembly and the limiting assembly in this invention;

[0040] Figure 6 This is a cross-sectional view of the transmission shaft, grinding wheel assembly, and flexible compensation structure in this invention.

[0041] Figure 7 This is a cross-sectional view of the grinding wheel assembly and the flexible compensation structure in this invention.

[0042] Figure 8 This is a schematic diagram of the grinding wheel in this invention;

[0043] Figure 9 This is a cross-sectional view of the flexible compensation structure in this invention;

[0044] Figure 10 This is a cross-sectional view of the locating outer ring and locating inner ring in this invention.

[0045] Figure 11 This is a cross-sectional view of the limiting component in this invention.

[0046] In the diagram: 1. Machine tool body; 2. Mounting base; 3. Support; 4. Drive shaft; 5. Outer protective cover; 6. Positioning retaining ring; 7. Mounting retaining ring; 8. Grinding wheel; 9. Mounting hole; 10. Positioning outer ring; 11. Positioning inner ring; 12. Flexible ring; 13. Polygonal hole; 14. Annular assembly groove; 15. Abutment frame; 16. Limiting frame; 17. Positioning ring; 18. Drive component; 19. Support frame; 20. Roller; 21. Rubber sleeve; 22. Drive device; 23. Transverse slide plate. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0048] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0049] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0052] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0053] like Figures 1 to 11As shown, a roll grinding device according to an embodiment of the present invention is illustrated, including a machine tool body 1, a mounting base 2 fixedly mounted on the transverse slide plate 23 of the machine tool body 1, a support 3, a grinding wheel assembly, an outer protective cover 5, and a limiting assembly. The support 3 is fixedly mounted on the mounting base 2, and a transmission shaft 4 is rotatably mounted inside the support 3. The grinding wheel assembly is mounted on one end of the transmission shaft 4 for grinding the roll. The grinding wheel assembly is provided with a flexible compensation structure inside for automatically adjusting the radial position between the grinding wheel assembly and the roll during grinding. The grinding wheel assembly includes a positioning retaining ring 6, a mounting retaining ring 7, and a grinding wheel 8. The positioning retaining ring 6 is coaxially fixedly mounted on the transmission shaft 4, and the mounting retaining ring 7 is coaxially and detachably mounted on the transmission shaft 4. The grinding wheel 8 is coaxially disposed between the mounting retaining ring 7 and the positioning retaining ring 6, and a mounting hole 9 is coaxially opened in the middle of the grinding wheel 8.

[0054] Specifically, when grinding the roll, the roll is first clamped in the chuck of the machine tool body 1, and then the tailstock center is used to fix the roll. Then, the grinding wheel 8 is installed on the end of the drive shaft 4 on the support 3, and then the mounting retaining ring 7 is fitted on the drive shaft 4 to restrict the movement of the grinding wheel 8 along the axis of the drive shaft 4. After the grinding wheel 8 is installed, it is located between the positioning retaining ring 6 and the mounting retaining ring 7, and then grinding can begin. At this time, the power unit in the machine tool body 1 drives the chuck to rotate, thereby driving the roll to rotate. At the same time, the position of the grinding wheel 8 is adjusted by adjusting the position of the transverse slide 23 until the outer circle of the grinding wheel 8 contacts the roll. Then, the saddle is driven to move the transverse slide 23 along the axis of the roll, thereby pushing the grinding wheel 8 to move, thus grinding the roll.

[0055] During the grinding process, when grinding the worn roll body, the limiting component is in its original position. When repairing the deep pits in the roll, the flexible compensation structure will prevent the grinding wheel from breaking due to excessive feed or uneven pressure. During the fine grinding process, the limiting component is activated to fix the relative position between the grinding wheel 8 and the drive shaft 4, thereby ensuring the consistency of the roll profile.

[0056] It should be added that the transverse slide 23 and the saddle are common lathe structures, and in this application they are mainly used to adjust the position of the grinding wheel 8, that is, to adjust the axial position of the grinding wheel 8 by means of the saddle and to adjust the longitudinal position of the grinding wheel 8 by means of the transverse slide 23.

[0057] The above, such as Figures 5 to 10As shown, the flexible compensation structure includes a positioning outer ring 10, a positioning inner ring 11, and a flexible ring 12. The positioning outer ring 10 is coaxially fixedly installed inside the mounting hole 9. The positioning inner ring 11 is coaxially and detachably installed at one end of the transmission shaft 4. The positioning inner ring 11 and the positioning outer ring 10 are arranged coaxially. The flexible ring 12 is fixedly installed between the positioning inner ring 11 and the positioning outer ring 10. The flexible ring 12 is preferably made of rubber. Several polygonal holes 13 are opened and evenly arranged inside the flexible ring 12. The polygonal holes 13 are preferably hexagonal holes. The parts of the positioning outer ring 10 and the positioning inner ring 11 that contact the flexible ring 12 are provided with annular assembly grooves 14 for limiting the axial displacement of the flexible ring 12. An abutment frame 15 is provided between the positioning retaining ring 6 and the positioning inner ring 11. The abutment frame 15 is fitted on the transmission shaft 4. One end of the abutment frame 15 is fixedly connected to the positioning retaining ring 6, and the other end of the abutment frame 15 abuts against the positioning inner ring 11. The mounting retaining ring 7 abuts against the other end of the positioning inner ring 11.

[0058] Specifically, during the grinding process of the worn roll body, the grinding wheel contacts the roll. As the drive shaft 4 rotates continuously, the drive shaft 4 drives the positioning inner ring 11 to rotate. The positioning inner ring 11, through the setting of the flexible ring 12, drives the positioning outer ring 10 to rotate, thereby driving the grinding wheel 8 to rotate, thus grinding the roll. During this process, because the flexible ring 12 is elastic, during the grinding process, it is subjected to the centrifugal force generated by the rotation of the positioning outer ring 10 and the force exerted by the roll on the grinding wheel during grinding. This causes the polygonal hole 13 in the flexible ring 12 to deform, thereby dissipating the impact force generated when grinding to the pitted area of ​​the roll, reducing the occurrence of vibration marks, and improving the grinding quality.

[0059] It should be added that vibration marks are generally periodic micro-ripples formed on the surface due to vibration during the grinding process of the roll. They are usually caused by a sudden small-amplitude vibration when the grinding wheel 8 is used to grind the roll. The flexible ring 12 can reduce the occurrence of this vibration, thereby reducing the generation of vibration marks.

[0060] like Figure 5 , Figure 6 , Figure 11As shown, the outer cover 5 is fixedly installed at one end of the support 3. The outer cover 5 is located at the end where the grinding wheel assembly is installed. The grinding wheel assembly is located inside the outer cover 5. The limiting assembly is installed on the outer cover 5 to limit the relative position of the grinding wheel assembly and the drive shaft 4. The limiting assembly includes a limiting frame 16, a positioning ring 17, and a limiting part. Two limiting frames 16 are fixedly installed inside the outer cover 5. The two limiting frames 16 are symmetrically arranged relative to the drive shaft 4. The positioning ring 17 is coaxially fixedly installed at one end of the positioning outer ring 10. The positioning ring 17 is located between the positioning outer ring 10 and the abutment frame 15. There is an axial gap between the positioning ring 17 and the abutment frame 15. Limiting parts are fixedly installed inside both limiting frames 16 to keep the positioning ring 17 coaxial with the drive shaft 4 during rotation.

[0061] Specifically, when the roll needs to be finely ground, it is necessary to limit the compensation capability of the flexible ring 12, that is, to prevent the flexible ring 12 from deforming during the grinding process. At this time, the limiting part is activated until the working end of the limiting part contacts the positioning ring 17. This will prevent the flexible ring 12 from deforming when the grinding wheel 8 rotates, thereby improving the grinding accuracy and stabilizing the dimensional uniformity of the roll.

[0062] The above, such as Figure 11 As shown, the limiting part includes a drive component 18, a support frame 19, and rollers 20. The drive component 18 is fixedly installed inside both limiting frames 16. The drive component 18 is preferably in the form of an electric cylinder. The output end of both drive components 18 is fixedly installed with a support frame 19. Two rollers 20 are symmetrically and rotatably installed on each of the two support frames 19. Each roller 20 is fitted with a rubber sleeve 21. When the drive component 18 pushes the support frame 19 to the working position, the rubber sleeve 21 contacts the positioning ring 17.

[0063] Specifically, when the rolls need to be finely ground, two drive components 18 are started simultaneously. The two drive components 18 synchronously drive the corresponding support frame 19 to move until the rubber sleeves 21 on the two rollers 20 on the support frame 19 abut against the positioning ring 17. During the rotation of the grinding wheel 8, the positioning ring 17 is driven to rotate, and the rollers 20 rotate at the same time. The rubber sleeves 21 play the role of stabilizing pressure and increasing support force.

[0064] When installing and replacing the grinding wheel 8, first fit the inner positioning ring 11 in the middle of the grinding wheel 8 onto the drive shaft 4 until the inner positioning ring 11 abuts against the abutment bracket 15. At this time, the positioning ring 17 does not contact the abutment bracket 15. Then fix the circumferential position of the inner positioning ring 11 on the drive shaft 4. Then install the mounting retaining ring 7 on the drive shaft 4. The mounting retaining ring 7 abuts against the end of the inner positioning ring 11. Then fix the mounting retaining ring 7 to fix the axial position of the inner positioning ring 11, thereby completing the installation of the grinding wheel 8.

[0065] The above, such as Figure 3 As shown, it also includes a drive unit 22, which is fixedly mounted on the mounting base 2. The output end of the drive unit 22 is fixedly connected to the end of the transmission shaft 4 away from the outer cover 5, and is used to provide power.

[0066] Specifically, the drive unit 22 includes a power part and a transmission part. The power part is generally set as a motor or similar structure, and the transmission part is generally set as a transmission belt. That is, the output end of the motor, which is the power part, and one end of the transmission shaft 4 are both equipped with matching pulleys, and a transmission belt is also set between the two pulleys. When it is necessary to drive the grinding wheel 8 to rotate, the power part of the drive unit 22 is started, and the transmission part drives the transmission shaft 4 to rotate.

[0067] The working principle or usage process of this application is as follows:

[0068] When grinding the roll, first install the grinding wheel 8, then fit the inner positioning ring 11 in the middle of the grinding wheel 8 onto the drive shaft 4 until the inner positioning ring 11 abuts against the abutment frame 15. At this time, the positioning ring 17 does not contact the abutment frame 15. Then fix the circumferential position of the inner positioning ring 11 on the drive shaft 4. Then install the mounting retaining ring 7 on the drive shaft 4, with the mounting retaining ring 7 abutting against the end of the inner positioning ring 11. Then fix the mounting retaining ring 7 to fix the axial position of the inner positioning ring 11, thus completing the installation of the grinding wheel 8. Then clamp the roll in the chuck part of the machine tool body 1, and then use the center of the tailstock to fix the roll. Grinding the roll can then begin.

[0069] At this time, the chuck is driven to rotate by the power unit in the machine tool body 1, thereby driving the roll to rotate. At the same time, the position of the transverse slide 23 is adjusted to adjust the position of the grinding wheel 8 until the outer circle of the grinding wheel 8 contacts the roll. Then, the saddle is driven to move the transverse slide 23 along the axis of the roll, thereby pushing the grinding wheel 8 to move. At the same time, the drive device 22 is turned on to drive the transmission shaft 4 to rotate, and the transmission shaft 4 drives the grinding wheel 8 to rotate, thereby grinding the roll.

[0070] During the grinding process of the worn roll body, the grinding wheel contacts the roll. As the drive shaft 4 rotates continuously, the drive shaft 4 drives the positioning inner ring 11 to rotate. The positioning inner ring 11, through the setting of the flexible ring 12, drives the positioning outer ring 10 to rotate, thereby driving the grinding wheel 8 to rotate, thus grinding the roll. During this process, due to the elasticity of the flexible ring 12, it is subjected to the centrifugal force generated by the rotation of the positioning outer ring 10 and the force exerted by the roll on the grinding wheel during grinding. This causes the polygonal hole 13 in the flexible ring 12 to deform. Especially when repairing the local deep pits of the roll, the pressure deformation of the polygonal hole 13 dissipates the impact force generated when grinding the pits of the roll, preventing the grinding wheel from breaking. This reduces the occurrence of vibration marks and improves the grinding quality.

[0071] When the roll needs to be finely ground, two drive units 18 are started simultaneously. The two drive units 18 synchronously drive the corresponding support frame 19 to move until the rubber sleeve 21 on the outside of the two rollers 20 on the support frame 19 abuts against the positioning ring 17, thereby fixing the relative position between the grinding wheel 8 and the drive shaft 4, ensuring the consistency of the roll profile, improving the grinding accuracy, and stabilizing the dimensional uniformity of the roll. During the rotation of the grinding wheel 8, the positioning ring 17 is driven to rotate, and at the same time the rollers 20 and the rubber sleeves 21 on the rollers 20 rotate, which plays a role in stabilizing the pressure and increasing the support force.

[0072] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A roll grinding device, comprising a machine tool body (1), wherein a mounting base (2) is fixedly installed on the transverse slide plate (23) of the machine tool body (1), characterized in that, Also includes: Support (3), the support (3) is fixedly installed on the mounting base (2), and a transmission shaft (4) is rotatably installed inside the support (3); A grinding wheel assembly is installed at one end of the drive shaft (4) for grinding the roll. The grinding wheel assembly is provided with a flexible compensation structure to automatically adjust the radial position between the grinding wheel assembly and the roll during grinding. The grinding wheel assembly includes: Positioning retaining ring (6), which is coaxially fixedly installed on the transmission shaft (4); Mounting retaining ring (7), which is coaxial and detachably mounted on the drive shaft (4); A grinding wheel (8) is coaxially disposed between the mounting retaining ring (7) and the positioning retaining ring (6), and a mounting hole (9) is coaxially provided in the middle of the grinding wheel (8). The flexible compensation structure includes: The positioning outer ring (10) is coaxially fixedly installed inside the mounting hole (9); The positioning inner ring (11) is coaxially and detachably installed at one end of the transmission shaft (4), and the positioning inner ring (11) is coaxially arranged with the positioning outer ring (10). Flexible ring (12), the flexible ring (12) is fixedly installed between the positioning inner ring (11) and the positioning outer ring (10); The flexible ring (12) has a number of polygonal holes (13) evenly arranged inside. The parts of the positioning outer ring (10) and the positioning inner ring (11) that are in contact with the flexible ring (12) are provided with annular assembly grooves (14) for limiting the axial displacement of the flexible ring (12). An outer protective cover (5) is fixedly installed at one end of the support (3). The outer protective cover (5) is located at the end where the grinding wheel assembly is installed, and the grinding wheel assembly is located inside the outer protective cover (5). A limiting component is installed on the outer cover (5) to limit the relative position of the grinding wheel assembly and the drive shaft (4).

2. The roll grinding equipment according to claim 1, characterized in that, An abutment bracket (15) is provided between the positioning retaining ring (6) and the positioning inner ring (11). The abutment bracket (15) is fitted on the transmission shaft (4). One end of the abutment bracket (15) is fixedly connected to the positioning retaining ring (6), and the other end of the abutment bracket (15) abuts against the positioning inner ring (11). The mounting retaining ring (7) abuts against the other end of the positioning inner ring (11).

3. The roll grinding equipment according to claim 2, characterized in that, The limiting component includes: The limiting frame (16) is fixedly installed inside the outer cover (5), and the two limiting frames (16) are arranged symmetrically with respect to the drive shaft (4). Positioning ring (17), the positioning ring (17) is coaxially fixedly installed at one end of the positioning outer ring (10), the positioning ring (17) is located between the positioning outer ring (10) and the abutment frame (15), and there is an axial gap between the positioning ring (17) and the abutment frame (15); The limiting part is fixedly installed inside both limiting frames (16) to keep the positioning ring (17) coaxial with the transmission shaft (4) during rotation.

4. The roll grinding equipment according to claim 3, characterized in that, The limiting part includes: The drive component (18) is fixedly installed inside both of the limiting frames (16). Support frame (19), the output ends of the two drive units (18) are fixedly mounted with the support frame (19). Rollers (20) are symmetrically and rotatably mounted on both of the two support frames (19).

5. A roll grinding device according to claim 4, characterized in that, Each of the rollers (20) is fitted with a rubber sleeve (21), and when the drive member (18) pushes the support frame (19) to the working position, the rubber sleeve (21) contacts the positioning ring (17).

6. The roll grinding equipment according to claim 1, characterized in that, It also includes a drive device (22), which is fixedly mounted on the mounting base (2). The output end of the drive device (22) is fixedly connected to the end of the transmission shaft (4) away from the outer cover (5) to provide power.

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