CN120645124B - Grinding and polishing assembly and grinding and polishing device - Google Patents

Abstract

The present invention discloses a grinding and polishing assembly and a grinding and polishing device. The grinding and polishing assembly includes a connecting plate, a polishing plate and a connecting assembly. The connecting plate is provided with a plurality of mounting portions and a plurality of first avoidance holes, the plurality of mounting portions are provided in one-to-one correspondence with the plurality of first avoidance holes, the first avoidance holes are provided through-through along the thickness direction of the connecting plate, the mounting portions are provided on the top surface of the connecting plate and are provided close to the first avoidance holes, and each mounting portion is provided with a first light hole; the polishing plate is provided with a plurality of connecting portions, the connecting portions are provided in one-to-one correspondence with the first avoidance holes, and each connecting portion is provided with a second light hole; each connecting portion is provided in the corresponding first avoidance hole, and the connecting assembly is provided in turn in the second light hole and the first light hole to detachably connect the polishing plate to the connecting plate. The grinding and polishing assembly and the grinding and polishing device provided by the present application can solve the problems of cumbersome disassembly and assembly process, low efficiency and failure of thread slippage of the polishing plate in the prior art.

Description

Grinding and polishing assembly and grinding and polishing device

Technical Field

The invention relates to the technical field of workpiece grinding and polishing, in particular to a grinding and polishing assembly and a grinding and polishing device.

Background

In the prior art, the fixing mode between the grinding and polishing assembly of the grinding and polishing device and the connecting disc is mainly screw fixation, the disassembly and assembly process is complex, the efficiency is low, and screw thread sliding teeth on a polishing disc fixing plate are easy to lose efficacy after multiple times of disassembly and assembly.

Disclosure of Invention

The invention aims to provide a polishing assembly and a polishing device, which at least solve the problems of complex disassembly and assembly process, low efficiency and screw thread sliding tooth failure of a polishing disk in the prior art.

According to one aspect of the present invention, there is provided a polishing assembly comprising:

The connecting disc is provided with a plurality of mounting parts and a plurality of first avoidance holes, the mounting parts are arranged in one-to-one correspondence with the first avoidance holes, the first avoidance holes are communicated in the thickness direction of the connecting disc, the mounting parts are arranged on the top surface of the connecting disc and are close to the first avoidance holes, and each mounting part is provided with a first unthreaded hole;

The polishing disc is provided with a plurality of connecting parts, the connecting parts are arranged in one-to-one correspondence with the first avoiding holes, and each connecting part is provided with a second light hole;

the connecting components penetrate through the corresponding first avoiding holes, and the connecting components penetrate through the second unthreaded holes and the first unthreaded holes in sequence so as to detachably connect the polishing disc with the connecting disc.

Further, the second light hole comprises a strip hole, the strip hole extends along the thickness direction of the connecting disc, and the connecting assembly is in clearance fit with the strip hole.

Further, be provided with spacing step in the first unthreaded hole, coupling assembling includes:

the pin sleeve is detachably connected to the first unthreaded hole, a first through hole is formed in the axis of the pin sleeve, and a second avoidance hole is formed in the inner wall surface of the first through hole;

The locking piece is arranged in the second avoidance hole, and is provided with a first position protruding out of the outer surface of the pin sleeve at least partially and stopping at the limiting step and a second position retracted to the inner side of the second avoidance hole;

The pin shaft penetrates through the first through hole and can move along the axial direction of the first through hole, a pushing part is arranged on the pin shaft, and the pin shaft moves along the axial direction of the first through hole so that the pushing part pushes the locking piece to switch from the first position to the second position.

Further, an inner wall surface of the first end of the first through hole is provided with an inner flange, and the connection assembly further includes:

The elastic piece is arranged in the pin sleeve and sleeved on the outer peripheral side of the pin shaft, and two ends of the elastic piece respectively prop against the inner flange and the pushing part;

The pin shaft overcomes the elasticity of the elastic piece under the action of external force to drive the pushing part to push the locking piece to be switched from the first position to the second position, and the pin shaft drives the pushing part to push the locking piece to be switched from the second position to the first position under the action of the elasticity of the elastic piece.

Further, an outer flange is arranged on the pin shaft, threads are arranged on the inner wall surface of the second end of the first through hole, and the connecting assembly further comprises a nut which is installed on the first through hole through the threads and stops at one side, far away from the inner flange, of the outer flange.

Further, the polishing assembly also comprises a first rolling component which is arranged on the mounting part and/or the connecting part, wherein the surface of the connecting part, which is opposite to the mounting part, is contacted with the first rolling component, and/or,

The polishing assembly comprises a polishing disc, a connecting part, a first rolling part, a second rolling part and a first rolling part, wherein the connecting part is sequentially provided with a first side face and a second side face along the rotation direction of the polishing disc, the second rolling part is arranged on the mounting part and/or the connecting part, and the first side face is contacted with the mounting part through the second rolling part.

Further, the first rolling part and the second rolling part each comprise a rolling bearing, a fixed pin and a retainer ring, wherein,

The retainer ring is arranged between the rolling bearing and the mounting part, the fixing pin is arranged on the rolling bearing and the retainer ring in a penetrating way and is fixed on the mounting part, or

The retaining ring set up in antifriction bearing with between the connecting portion, the fixed pin wears to locate antifriction bearing with the retaining ring is fixed in on the connecting portion.

Further, the mounting parts comprise at least 3, at least 3 mounting parts are sequentially arranged at intervals along the circumferential direction of the connecting disc, the connecting parts comprise at least 3, and at least 3 connecting parts are sequentially arranged at intervals along the circumferential direction of the polishing disc.

Further, the polishing assembly also comprises a stop plate which is arranged on the connecting assembly and positioned on one side of the connecting part away from the mounting part, the maximum width of the stop plate is larger than the maximum width of the second light hole, and/or,

The polishing assembly further includes a connector that connects the connector assembly to the mounting portion.

On the other hand, the application also provides a polishing device, which comprises the polishing assembly.

In the invention, a plurality of mounting parts and a plurality of first avoidance holes are arranged on the connecting disc, a plurality of connecting parts are arranged on the polishing disc, and the mounting parts, the first avoidance holes and the connecting parts are uniformly and correspondingly arranged. And be provided with first unthreaded hole on the installation department, be provided with the second unthreaded hole on the connecting portion, connecting portion wears to locate corresponding first dodge the hole, adopts coupling assembling to wear to locate second unthreaded hole and first unthreaded hole in proper order in order with polishing pad detachably connect in the connection pad. The arrangement simplifies the disassembly and assembly process of the connecting disc and the polishing disc, improves the replacement efficiency, and simultaneously avoids the occurrence of screw thread sliding tooth failure caused by continuously replacing the polishing disc for a long time.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a top view of a polishing assembly according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of the overall structure of a polishing and grinding assembly according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of area A of FIG. 2;

FIG. 4 is a cross-sectional view of FIG. 3;

FIG. 5 is a cross-sectional view of a first rolling member of the polishing assembly disclosed in an embodiment of the present invention;

FIG. 6 is a cross-sectional view of a second rolling member of the polishing assembly disclosed in an embodiment of the present invention;

FIG. 7 is a cross-sectional view of a polishing assembly according to an embodiment of the present disclosure;

fig. 8 is a schematic view of a mounting structure of a second rolling member of the polishing assembly according to an embodiment of the present invention;

Fig. 9 is a schematic view illustrating a mounting structure of a first rolling member of a polishing assembly according to an embodiment of the present invention.

Wherein the above figures include the following reference numerals:

10. The connecting disc, 11, the mounting part, 111, the first light hole, 1111, the limiting step, 112, the second connecting hole, 12, the first avoidance hole, 13, the reinforcing rib, 14, the liquid discharging hole, 20, the polishing disc, 21, the connecting part, 211, the second light hole, 212, the first side face, 213, the second side face, 30, the connecting component, 31, the pin bush, 311, the first through hole, 3111, the second avoidance hole, 3112, the inner flange, 32, the locking piece, 33, the pin shaft, 331, the pushing part, 332, the outer flange, 34, the elastic piece, 35, the nut, 40, the first rolling component, 41, the rolling bearing, 42, the fixing pin, 43, the retainer ring, 44, the screw, 50, the second rolling component, 60, the stop plate, 61, the first connecting hole, 70 and the fastener.

Detailed Description

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the authorization specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

As mentioned in the background art, in the prior art, the fixing mode between the polishing assembly of the polishing device and the connecting disc is mainly screw fixing, the disassembly and assembly process is complex, the efficiency is low, and screw thread sliding teeth on the polishing disc fixing plate are easy to lose efficacy after multiple times of disassembly and assembly. Therefore, the application provides a polishing assembly and a polishing device, which at least can solve the problems of the polishing device in the prior art. The polishing assembly of the present application will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 9, according to an embodiment of the present application, there is provided a polishing assembly including a connection pad 10, a polishing pad 20, and a connection assembly 30.

Specifically, a plurality of mounting portions 11 and a plurality of first avoiding holes 12 are formed in the connecting disc 10, the plurality of mounting portions 11 and the plurality of first avoiding holes 12 are arranged in a one-to-one correspondence manner, the first avoiding holes 12 are formed in a penetrating manner along the thickness direction of the connecting disc 10, the mounting portions 11 are arranged on the top surface of the connecting disc 10 and close to the first avoiding holes 12, first unthreaded holes 111 are formed in the mounting portions 11, a plurality of connecting portions 21 are arranged on the polishing disc 20, the connecting portions 21 and the first avoiding holes 12 are arranged in a one-to-one correspondence manner, second unthreaded holes 211 are formed in the connecting portions 21, the connecting portions 21 penetrate through the corresponding first avoiding holes 12, and the connecting assemblies 30 penetrate through the second unthreaded holes 211 and the first unthreaded holes 111 in sequence to detachably connect the polishing disc 20 to the connecting disc 10.

In the actual working process, the connecting part 21 on the polishing disc 20 is penetrated into the first avoiding hole 12 on the connecting disc 10, and the connecting assembly 30 is sequentially penetrated into the second unthreaded hole 211 and the first unthreaded hole 111 to fasten, so that the installation of the connecting disc 10 and the polishing disc 20 is completed. When the polishing pad 20 needs to be replaced, the entire polishing pad 20 can be removed by simply loosening the coupling assembly 30. So set up, need not complicated location adjustment during the dismouting, only need the operation coupling assembling 30 can accomplish the dismantlement and the installation of polishing dish 20, improved dismouting efficiency. And the connection assembly 30 used in the present application requires little or no tools when replacing the polishing pad 20, reducing downtime of the polishing apparatus. In the application, the second unthreaded hole 211 and the first unthreaded hole 111 which are sequentially penetrated by the connecting component 30 are unthreaded, so that the occurrence of failure of the thread sliding teeth after repeated assembly and disassembly is avoided, the secondary thread processing is reduced, and the production cost is reduced. In addition, the mounting portion 11 is disposed on the top surface of the connection pad 10 and is disposed near the first avoiding hole 12, and when the polishing pad 20 is mounted or dismounted, a heavy polishing device does not need to be moved or turned, so that the operation difficulty is reduced.

Compared with the prior art that the connecting disc 10 and the polishing disc 20 are fixed by the bolts, the polishing assembly of the application adopts the connecting assembly 30 to sequentially penetrate through the second unthreaded hole 211 and the first unthreaded hole 111, so that the disassembly and assembly processes of the connecting disc 10 and the polishing disc 20 are simplified, the replacement efficiency is improved, and the situation that the thread sliding is invalid due to the fact that the polishing disc 20 is continuously replaced for a long time is avoided.

Further, in the present application, the mounting portion 11 is fixedly mounted to the attachment plate 10 by a plurality of fasteners 70, and the connection portion 21 is also fixed to the polishing plate 20 by a plurality of fasteners 70. Alternatively, the fastener 70 may be a bolt, a screw, or the like, and is not particularly limited in the present application. Illustratively, the number of fasteners 70 on the mounting portion 11 and the number of fasteners 70 on the connecting portion 21 may each be 2, 3, 4, and more than 4. The present application shows a case where the number of fasteners 70 is 4. In the present application, the connection portion 21 is L-shaped, and the fastener 70 is provided on a side facing away from the connection pad 10 to fix the connection portion 21 to the polishing pad 20. Of course, in other embodiments of the present application, the connecting portion 21 may have other shapes, and any shape is within the scope of the present application as long as it is within the concept of the present application.

That is, between the mounting portion 11 and the land 10, the connecting portion 21 and the polishing pad 20, the joint strength and stability are improved by the combined action of the plurality of fasteners 70, the movement error due to the loose connection is reduced, and further the polishing precision is ensured, and in addition, the flexibility of assembly and maintenance is improved and the positioning precision is ensured by such arrangement.

As shown in fig. 1 to 4, the second light hole 211 includes a long hole extending in the thickness direction of the connection pad 10, and the connection assembly 30 is clearance-fitted with the long hole. In the polishing device, the second unthreaded hole 211 is designed to be a strip hole extending along the thickness direction of the connecting disc 10, and the connecting assembly 30 and the strip hole are in clearance fit, so that axial and radial floating allowance can be provided, and the self-adaptive attachment of the polishing disc 20 is realized, thereby ensuring uniform polishing pressure and avoiding local excessive wear. And the connecting component 30 is in clearance fit with the strip hole, so that the surface of a workpiece (not shown in the figure) to be ground can be ensured to be uniformly contacted all the time, the defects of polishing lines, scratches or local overpolishing and the like are reduced, and the polishing precision and the surface quality of the workpiece are improved.

As shown in fig. 4, a limiting step 1111 is disposed in the first optical hole 111, and the connection assembly 30 includes a pin housing 31, a locking member 32, and a pin 33. In the present application, in the polishing assembly, the polishing pad 20 and the connection pad 10 are quickly and reliably detached and installed by the cooperation of the first light hole 111, the limit step 1111, and the connection assembly 30 (including the pin housing 31, the locking member 32, and the pin shaft 33). In the actual working process, according to the polishing precision of the workpiece, different polishing discs 20 need to be replaced to perform rough polishing, semi-finish polishing and finish polishing on the workpiece, and in the application, the connecting component 30 is selected to be assembled by the pin bush 31, the locking piece 32 and the pin shaft 33, so that the dismounting efficiency between the polishing discs 20 and the connecting disc 10 is improved.

Specifically, the pin bush 31 is detachably connected to the first light hole 111, a first through hole 311 is provided on the axis of the pin bush 31, and a second escape hole 3111 is provided on the inner wall surface of the first through hole 311. In the present application, the second relief holes 3111 include 2, and the 2 second relief holes 3111 are symmetrically disposed. The locking pieces 32 are provided in the second escape holes 3111, and the number of the locking pieces 32 is also 2. And the locking piece 32 has a first position protruding at least partially from the outer surface of the pin housing 31 and stopped at the limit step 1111 and a second position retracted to the inside of the second escape hole 3111. The pin 33 is disposed through the first through hole 311 and can move along the axial direction of the first through hole 311, and a pushing portion 331 is disposed on the pin 33, and the pin 33 moves along the axial direction of the first through hole 311 to enable the pushing portion 331 to push the locking member 32 to switch from the first position to the second position. Illustratively, the locking member 32 may be a ball.

When the locking member 32 is at the first position (partially protruding out of the outer surface of the pin sleeve 31 and stopping at the limiting step 1111), the locking member 32 and the limiting step 1111 form a mechanical engagement, the pin sleeve 31 is axially fixed in the first unthreaded hole 111 by the radially protruding locking member 32, reliable locking of the connecting assembly 30 and the mounting portion 11 is achieved, complex operations such as screwing and the like are not needed, and the locking process is stable and instant. Compared with the traditional threaded connection (easy loosening due to vibration) or simple clearance fit (no axial constraint), the structure can more reliably resist axial pulling force, prevent the pin bush 31 from being accidentally pulled out of the first unthreaded hole 111, and ensure the long-term stability of connection. In the present application, the connecting assembly 30 needs to have both firm locking and no blocking of floating, and the core components such as the locking member 32 and the pin shaft 33 are integrated in the first unthreaded hole 111 and the pin sleeve 31 (the locking member 32 is hidden in the second avoidance hole 3111, and the pin shaft 33 is penetrating through the first through hole 311), so that excessive space is not protruded to the outside, interference with other structures (such as strip holes) of the connecting disc 10 and the polishing disc 20 is avoided, and the compact design requirement of the polishing device is met.

When the polishing disc is required to be disassembled, the pin shaft 33 is only required to move along the axial direction, the locking piece 32 is pushed to retract to the second position (retract to the inner side of the second avoidance hole 3111) by the pushing part 331, at this time, the locking of the locking piece 32 and the limiting step 1111 is released, the pin bush 31 can be directly taken out from the first unthreaded hole 111, no tool assistance or complicated screwing is required, the replacement time of the polishing disc 20 is greatly shortened, the operation is simple, and the maintenance difficulty is reduced.

Further, in the present application, the locking/unlocking action is completed only by the axial movement of the pin 33, and the clearance fit relationship between the connection assembly 30 and the elongated hole (the second light hole 211) is not affected, so that in the locked state, the polishing disk 20 can still realize the micro-adjustment required for floating polishing through the clearance between the elongated hole and the connection assembly 30.

As shown in fig. 4, an inner wall surface of the first end of the first through hole 311 is provided with an inner flange 3112, and the connection assembly 30 further includes an elastic member 34. Illustratively, the resilient member 34 may be a spring, rubber pad, or the like. The spring force of the spring member 34 provides an automatic driving force for the switching of the locking member 32 from the first position to the second position or vice versa. The elastic member 34 is disposed in the pin housing 31 and sleeved on the outer peripheral side of the pin 33, and both ends of the elastic member 34 respectively abut against the inner flange 3112 and the pushing portion 331. The pin shaft 33 overcomes the elastic force of the elastic member 34 under the action of an external force to drive the pushing portion 331 to push the locking member 32 to switch from the first position to the second position, and at this time, the pin bush 31 and the first light hole 111 can be separated. When the pin shaft 33 is driven by the elastic force of the elastic piece 34 to drive the pushing part 331 to push the locking piece 32 to switch from the second position to the first position, the polishing disk 20 is fixedly connected with the connecting disk 10. In the polishing process, the locking piece 32 may be accidentally loosened due to high-speed rotation or vibration of the device, and the continuous elastic force of the elastic piece 34 forms continuous radial thrust on the locking piece 32 through the pushing part 331, so that the continuous elastic force can resist external force interference such as vibration and impact, the locking piece 32 is prevented from accidentally retracting to the second position, the locking state of the connecting assembly 30 and the mounting part 11 (the first light hole 111) is ensured to be stable for a long time, and the polishing disc 20 is prevented from falling off during polishing. In addition, when the polishing device is operated, the pin shaft 33 may be axially impacted due to vibration or assembly error of the device, and the elastic member 34 may absorb part of the impact force through deformation thereof, so that abrasion or deformation between the pushing part 331 and the locking member 32, and between the locking member 32 and the limiting step 1111 due to rigid collision is avoided, and the service life of the component is prolonged. Meanwhile, the flexible connection of the elastic piece 34 can reduce the rigid friction between the pin shaft 33 and the pin sleeve 31, reduce the loss of components and improve the durability of the whole structure.

Referring again to fig. 4, the pin 33 is provided with an outer flange 332, and an inner wall surface of the second end of the first through hole 311 is provided with threads (not shown), and the connection assembly 30 further includes a nut 35, where the nut 35 is threadedly mounted to the first through hole 311 and stopped at a side of the outer flange 332 remote from the inner flange 3112. In the present application, the coupling assembly 30 is prevented from being disassembled due to the fact that the pin shaft 33 is separated from the pin bush 31 by an excessive external force by forming a double axial limit by the cooperation of the outer flange 332 and the nut 35. The elastic piece 34 is supported by the inner flange 3112, the maximum movement stroke of the pin 33 (namely the displacement range of the switching position of the locking piece 32) is further limited by the cooperation of the outer flange 332 and the nut 35, so that the state switching of the locking piece 32 is always within a preset range, and the locking failure or the component damage caused by the excessive movement of the pin 33 is avoided.

Further, in the application, assembly precision compensation and elasticity adjustment are realized through screw thread adjustment. During assembly, the axial position of the elastic member 34 in the first through hole 311 can be finely adjusted by rotating the nut 35, so as to adjust the interval between the outer flange 332 and the inner flange 3112, and indirectly control the initial compression (i.e. the elastic force) of the elastic member 34. The adjusting function can compensate part machining errors (such as the length of the pin shaft 33 and the dimensional deviation of the elastic piece 34), ensures that even if slight dimensional errors exist, the assembly can still reach an optimal matching state through adjustment of the nut 35, and improves assembly accuracy. And realize dismantling through nut 35 and threaded connection, when needs change elastic component 34, round pin axle 33 or locking piece 32, only need unscrew nut 35 can take out round pin axle 33 and relevant part, need not to destroy round pin cover 31 or other structures, simplify the maintenance flow by a wide margin. In addition, in the polishing process, vibration of the device may cause axial movement of the pin shaft 33, the nut 35 is tightly attached to the outer flange 332 after being fastened by threads, so that continuous axial constraint can be formed on the pin shaft 33, loosening or displacement of the pin shaft 33 caused by vibration is reduced, stable matching of the pushing part 331 and the locking piece 32 is ensured, and unexpected failure of the locking state is avoided.

As shown in fig. 8 and 9, the polishing assembly further includes a first rolling member 40, the first rolling member 40 being provided on the mounting portion 11 and/or the connection portion 21, and a surface of the connection portion 21 facing the mounting portion 11 being in contact with the first rolling member 40. Specifically, the first rolling member 40 may be provided on the mounting portion 11, may be provided on the connecting portion 21, and may be provided on both the mounting portion 11 and the connecting portion 21. The present application is not particularly limited, and a case where the first rolling member 40 is provided on the connecting portion 21 is shown in the present application. When the first rolling member 40 restricts the radial positioning of the polishing pad 20 during polishing, and reduces the friction force of the polishing pad 20 when moving up and down, the life of the member is prolonged, and the reliability and stability of the connection are improved.

In the actual working process, the connecting portion 21 and the mounting portion 11 may have relative displacement (such as tiny adjustment caused by polishing stress or position calibration during assembly), and the conventional sliding contact may cause large resistance due to large friction coefficient, so that more power is consumed, abrasion is easily caused due to friction, and the service life of the component is affected. The first rolling member 40 converts sliding friction into rolling friction by rolling contact, which greatly reduces resistance during relative movement and reduces energy loss, and simultaneously, the rolling friction has very little abrasion to contact surfaces, which can remarkably prolong the service lives of the mounting portion 11 and the connecting portion 21 and reduce maintenance cost. In addition, the first rolling member 40 is in point contact or line contact with the contact surface, so that the contact area is small, contaminants are not easy to accumulate in the contact area during polishing, and tiny impurities can be rolled or discharged to a certain degree during rolling, so that the risk of movement failure caused by the contaminants is reduced. Meanwhile, in the polishing process, the first rolling members 40 can transmit and disperse concentrated pressure to the contact surface by themselves, reduce the pressure per unit area (particularly when a plurality of first rolling members 40 are uniformly distributed), protect the surface accuracy of the mounting portion 11 and the connecting portion 21, and maintain long-term mating stability.

Further, along the rotation direction of the polishing disk 20, the connection portion 21 sequentially has a first side 212 and a second side 213, and the polishing assembly further includes a second rolling member 50, where the second rolling member 50 is disposed on the mounting portion 11 and/or the connection portion 21, and the first side 212 contacts the mounting portion 11 through the second rolling member 50. Illustratively, the second rolling member 50 may be disposed at both the first side 212 and the second side 213 of the connecting portion 21. Specifically, the second rolling member 50 may be provided on the mounting portion 11, on the connecting portion 21, or on both the mounting portion 11 and the connecting portion 21. In the present application, the second rolling member 50 is preferably provided on the first side 212 of the connecting portion 21. In the present application, the rotation direction of the polishing disk 20 is a fixed counterclockwise direction, and the first side 212 is used as a main force bearing surface in the rotation direction to directly bear the load in the rotation direction, so that the impact force in the rotation direction can be buffered only by arranging the second rolling component 50 at the first side 212, thereby reducing the structural wear and prolonging the service life of the components.

When the polishing disk 20 rotates, the connection portion 21 receives torque or inertial force in the rotation direction, which may cause the connection portion 21 to shift or shake in the rotation direction with respect to the mounting portion 11, affecting polishing accuracy. The second rolling member 50 is disposed between the first side surface 212 (front end surface in the rotation direction) and the mounting portion 11, and can not only allow a minute adjustment of the connection portion 21 with the normal rotation of the polishing pad 20 by rolling contact, but also limit excessive displacement of the connection portion 21 in the rotation direction by the rigid support of the second rolling member 50, thereby having a double function of "guiding+limiting" and ensuring stability of the polishing pad 20 when rotating.

As shown in fig. 5 and 6, each of the first rolling member 40 and the second rolling member 50 includes a rolling bearing 41, a fixed pin 42, and a retainer ring 43. The retainer 43 is disposed between the rolling bearing 41 and the mounting portion 11, and the fixing pin 42 is inserted through the rolling bearing 41 and the retainer 43 and fixed to the mounting portion 11, or the retainer 43 is disposed between the rolling bearing 41 and the connecting portion 21, and the fixing pin 42 is inserted through the rolling bearing 41 and the retainer 43 and fixed to the connecting portion 21. Illustratively, in the present application, the rolling bearing 41 may be a needle bearing, and by the cooperation of the inner ring, the outer ring, the rolling bodies and the cage, radial or axial load can be more stably borne, deflection and wear during rolling are reduced, and the friction characteristics of the first rolling member 40 and the second rolling member 50 are ensured to be more stable, thereby prolonging the service life of the apparatus.

Further, the fixing pin 42 is inserted through the rolling bearing 41 and the retainer ring 43 and is fixed on the mounting portion 11 or the connecting portion 21, so as to provide precise axial and radial positioning for the rolling bearing 41, avoid loosening, falling or position deviation of the rolling component in the moving process, and ensure that the rolling component always acts at a preset contact position.

Further, the retainer ring 43 is disposed between the rolling bearing 41 and the mounting portion 11 (or the connecting portion 21), so that the load transmitted by the rolling bearing 41 can be uniformly dispersed to the surface of the mounting portion 11 or the connecting portion 21 through the retainer ring 43, thereby avoiding local stress concentration caused by too small contact surface when the rolling bearing 41 is directly contacted with the mounting portion 11 or the connecting portion 21, and reducing indentation and abrasion on the surface of the mounting portion 11 or the connecting portion 21. In the present application, the retainer ring 43 is made of a hard retainer ring (metal material), which can ensure parallelism with the rolling bearing 41 by precision machining, and can assist in adjusting the mounting posture of the rolling bearing 41 to ensure stable contact. The retainer ring 43 can isolate the rolling bearing 41 from direct contact with the mounting portion 11 or the connecting portion 21, so as to avoid the aggravation of electrochemical corrosion or abrasion caused by material difference (such as metal and plastic) or different surface treatments (such as plating and roughness), and can prevent pollutants such as dust and chips from entering the rolling bearing 41, thereby protecting the lubrication performance of the bearing.

Further, in the present application, the screw 44 may be further provided on the first rolling member 40 or the second rolling member 50, and the fixing pin 42 is further locked by the screw 44, so that the fixing pin 42 is prevented from falling down during the polishing process, and the mounting stability of the first rolling member 40 and the second rolling member 50 is improved. The present application is illustrated in fig. 6 with the screw 44 mounted to the retaining pin 42.

In the present application, the specific installation positions of the first rolling member 40 and the second rolling member 50 are not limited, and an appropriate installation position is selected according to the actual production situation, so long as the reduction of the friction force when the polishing pad 20 moves up and down and the radial and circumferential positioning of the polishing pad 20 can be achieved.

As shown in fig. 1 and 2, the mounting portions 11 include at least 3, at least 3 mounting portions 11 are sequentially arranged at intervals in the circumferential direction of the land 10, the connecting portions 21 include at least 3, and at least 3 connecting portions 21 are sequentially arranged at intervals in the circumferential direction of the polishing pad 20.

For example, the number of the mounting portions 11 may be 3,4, or 4 or more, the number of the first escape holes 12 may be 3,4, or 4 or more, and the number of the connecting portions 21 may be 3,4, or 4 or more. In the present application, the number of the mounting portion 11, the connecting portion 21, and the first escape hole 12 is preferably 3. So arranged, with the stability of the triangle, the connection stability between the connection pad 10 and the polishing pad 20 is achieved. The three points determine the unique plane, and the connecting lines of any two points can form mutually restricted force arms, so that the radial force and the axial force applied by the polishing disk 20 can be uniformly dispersed to the three connecting points, and the overload of single-point stress is avoided. If the number of the mounting portion 11, the connecting portion 21, and the first avoiding hole 12 is 2, only the translation can be restricted, the rotation around the wire cannot be restricted, and the polishing disk 20 is liable to swing during rotation, and eccentric vibration is generated. If the number is 4 or more than 4, the multiple points are easy to cause virtual connection of part of connection points due to manufacturing errors, but an unstable state of single-point or two-point stress is formed, and local loss is aggravated. In addition, if the number is large, the polishing disk 20 is not easily assembled and disassembled, and the production cost is increased.

As shown in fig. 1-4, 8 and 9, the polishing assembly further includes a stop plate 60. Specifically, the stop plate 60 is disposed on the connection assembly 30 and located on a side of the connection portion 21 facing away from the mounting portion 11, and the maximum width of the stop plate 60 is greater than the maximum width of the second light hole 211. In the present application, the polishing pad 20 and the connection pad 10 are floatingly connected to the second optical hole 211 by the connection assembly 30, and the connection assembly 30 is in clearance fit with the second optical hole 211. However, when the polishing apparatus is operated (e.g., rotated at a high speed, vibrated) or the polishing pad 20 is attached and detached, if the polishing pad 20 is displaced in the axial direction (the direction away from the connection pad 10), it may slip off the connection assembly 30 (especially when the axial length of the second optical hole 211 is large). The maximum width of the stop plate 60 is greater than the maximum width of the second light hole 211 and is located at the side of the connecting portion 21 away from the mounting portion 11, so that when the polishing disc 20 moves axially outwards (away from the connecting disc 10), the stop plate 60 contacts and is clamped with the surface of the connecting portion 21 (the edge of the second light hole 211), and the maximum axial displacement of the polishing disc 20 is limited by mechanical blocking, so that the polishing disc is prevented from falling off from the connecting assembly 30, and the running safety and the operation stability of equipment are ensured. In the present application, the stopper plate 60 is directly provided on the connection assembly 30, reducing the number of parts and the processing cost, and also reducing the assembling difficulty.

Optionally, the polishing assembly further comprises a connector (not shown) that connects the connection assembly 30 to the mounting portion 11. Illustratively, the connector may be a rope, wire, or the like. Specifically, the first connection hole 61 is provided on the stopper plate 60, and the second connection hole 112 is provided on the mounting portion 11, so that the connection assembly 30 is connected to the mounting portion 11 by the connection member when the polishing pad 20 is detached, preventing the connection assembly 30 from being lost.

As shown in fig. 1 to 4, the top of the land 10 is further provided with a plurality of reinforcing ribs 13 and a plurality of drain holes 14 on the side wall of the land 10. Wherein, the reinforcing ribs 13 can effectively disperse the load born by the top (such as pressure and vibration impact in the polishing process) by increasing the structural thickness of the top of the connecting disc 10 (or forming a grid/supporting structure), and reduce bending or twisting deformation caused by stress. Especially, when the connecting disc 10 drives the polishing disc 20 to rotate at a high speed, structural vibration caused by centrifugal force or external force can be avoided, and the overall operation stability is ensured. The liquid discharge hole 14 can rapidly discharge waste liquid and scraps in the grinding and polishing process in time, so that the waste liquid and scraps are prevented from being accumulated between the connecting disc 10 and the polishing disc 20 or being attached to the grinding and polishing surface, and the interference on the grinding and polishing precision is reduced. In addition, the liquid discharge hole 14 can reduce liquid resistance and energy consumption and improve the operation efficiency of the polishing device, and the liquid discharge hole 14 can prevent waste liquid from penetrating into the inner parts (such as the bearing and the fastener 70) along the gap of the connecting disc 10, reduce the risk of corrosion or lubrication failure of the inner structure by liquid and protect the stability of the core part.

Referring again to fig. 1 to 9, the present application further provides a polishing device, which includes the polishing assembly described above. Therefore, the polishing device provided in this embodiment includes all the technical effects of the polishing assembly, and since the technical effects of the polishing assembly have been described in detail above, the detailed description is omitted here.

Spatially relative terms, such as "above," "upper" and "upper surface," "above" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the process is carried out, the exemplary term "above" may be included. Upper and lower. Two orientations below. The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A polishing assembly, comprising:

The novel connecting disc comprises a connecting disc (10), wherein a plurality of mounting parts (11) and a plurality of first avoidance holes (12) are formed in the connecting disc (10), the mounting parts (11) and the first avoidance holes (12) are arranged in a one-to-one correspondence manner, the first avoidance holes (12) are arranged in a penetrating manner along the thickness direction of the connecting disc (10), the mounting parts (11) are arranged on the top surface of the connecting disc (10) and are close to the first avoidance holes (12), and first unthreaded holes (111) are formed in the mounting parts (11);

The polishing device comprises a polishing disc (20), wherein a plurality of connecting parts (21) are arranged on the polishing disc (20), the connecting parts (21) are arranged in one-to-one correspondence with the first avoiding holes (12), and each connecting part (21) is provided with a second light hole (211);

The connecting components (30), each connecting portion (21) is arranged in a penetrating mode in a corresponding first avoidance hole (12), and the connecting components (30) are sequentially arranged in the second unthreaded hole (211) and the first unthreaded hole (111) in a penetrating mode so as to detachably connect the polishing disc (20) to the connecting disc (10).

2. The polishing assembly according to claim 1, wherein the second light hole (211) comprises an elongated hole extending in a thickness direction of the land (10), and the connection assembly (30) is clearance-fitted with the elongated hole.

3. The polishing assembly according to claim 1, wherein a limiting step (1111) is provided in the first light hole (111), and the connection assembly (30) comprises:

The pin sleeve (31), the pin sleeve (31) is detachably connected to the first unthreaded hole (111), a first through hole (311) is formed in the axis of the pin sleeve (31), and a second avoidance hole (3111) is formed in the inner wall surface of the first through hole (311);

A locking member (32), wherein the locking member (32) is arranged in the second avoidance hole (3111), and the locking member (32) is provided with a first position protruding at least partially out of the outer surface of the pin bush (31) and stopping at the limit step (1111) and a second position retracted to the inner side of the second avoidance hole (3111);

The pin shaft (33), the pin shaft (33) is worn to locate the first through hole (311) and can follow the axis direction of first through hole (311), be provided with on the pin shaft (33) and promote portion (331), the pin shaft (33) follow the axial direction of first through hole (311) is removed so that promote portion (331) promotes locking piece (32) is by first position switch over to the second position.

4. A polishing assembly according to claim 3, wherein an inner wall surface of the first end of the first through hole (311) is provided with an inner flange (3112), the connection assembly (30) further comprising:

An elastic member (34), wherein the elastic member (34) is arranged in the pin bush (31) and sleeved on the outer peripheral side of the pin shaft (33), and two ends of the elastic member (34) respectively prop against the inner flange (3112) and the pushing part (331);

The pin shaft (33) overcomes the elasticity of the elastic piece (34) under the action of external force to drive the pushing part (331) to push the locking piece (32) to be switched from the first position to the second position, and the pin shaft (33) drives the pushing part (331) to push the locking piece (32) to be switched from the second position to the first position under the action of the elasticity of the elastic piece (34).

5. The polishing assembly according to claim 4, wherein an outer flange (332) is provided on the pin shaft (33), a thread is provided on an inner wall surface of the second end of the first through hole (311), and the connection assembly (30) further comprises a nut (35), and the nut (35) is mounted on the first through hole (311) through the thread and stops at a side of the outer flange (332) away from the inner flange (3112).

6. The polishing assembly according to claim 1, further comprising a first rolling member (40), the first rolling member (40) being provided on the mounting portion (11) and/or the connecting portion (21), a surface of the connecting portion (21) facing the mounting portion (11) being in contact with the first rolling member (40), and/or,

Along the rotation direction of the polishing disc (20), the connecting part (21) is sequentially provided with a first side surface (212) and a second side surface (213), the polishing assembly further comprises a second rolling component (50), the second rolling component (50) is arranged on the mounting part (11) and/or the connecting part (21), and the first side surface (212) is contacted with the mounting part (11) through the second rolling component (50).

7. The polishing assembly according to claim 6, wherein the first rolling element (40) and the second rolling element (50) each comprise a rolling bearing (41), a fixed pin (42) and a retainer ring (43), wherein,

The retainer ring (43) is arranged between the rolling bearing (41) and the mounting part (11), the fixing pin (42) is penetrated through the rolling bearing (41) and the retainer ring (43) and is fixed on the mounting part (11), or

The retainer ring (43) is arranged between the rolling bearing (41) and the connecting part (21), and the fixing pin (42) is arranged on the rolling bearing (41) and the retainer ring (43) in a penetrating way and is fixed on the connecting part (21).

8. The polishing assembly according to any one of claims 1 to 7, wherein the mounting portions (11) comprise at least 3, at least 3 of the mounting portions (11) are sequentially arranged at intervals in the circumferential direction of the land (10), and the connecting portions (21) comprise at least 3, at least 3 of the connecting portions (21) are sequentially arranged at intervals in the circumferential direction of the polishing pad (20).

9. The polishing assembly according to any one of claims 1 to 7, further comprising a stopper plate (60), the stopper plate (60) being provided on the connection assembly (30) on a side of the connection portion (21) facing away from the mounting portion (11), a maximum width of the stopper plate (60) being greater than a maximum width of the second light aperture (211), and/or,

The polishing assembly further comprises a connector connecting the connection assembly (30) to the mounting portion (11).

10. A polishing device comprising the polishing assembly of any one of claims 1 to 9.