CN212977876U

CN212977876U - Polishing device

Info

Publication number: CN212977876U
Application number: CN202021173998.2U
Authority: CN
Inventors: 倪磊; 倪晋; 何建国
Original assignee: Chengdu Ruikun Technology Co ltd
Current assignee: Chengdu Ruikun Technology Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-04-16
Anticipated expiration: 2030-06-22

Abstract

The utility model relates to a machining equipment technical field discloses a grinding device, grinding device is equipped with the lumen in grinding device's the pivot, the lateral wall in lumen is equipped with the air vent, the position that corresponds the air vent is equipped with the axle sleeve of ventilating, the position that the lateral wall corresponds the air vent in the axle sleeve of ventilating is equipped with the air inlet ring groove, thereby make during gas in the gas transmission pipeline can get into the gasbag smoothly through the lumen, the axle sleeve of ventilating forms the sealing oil film with pivot cooperation position, lip seal has been replaced, thereby gas tightness and the high atmospheric pressure between the high-speed contradiction when the balanced pivot is turned round, and can show and improve components and parts wearing and tearing situation, very big spreading value and wide application prospect have.

Description

Polishing device

Technical Field

The utility model relates to a machining equipment technical field, concretely relates to grinding device.

Background

In the technical field of mechanical processing equipment, in particular in the processing fields of high-performance, high-precision and high-integration photoelectric devices, semiconductor devices and the like, elements made of hard and brittle materials such as optical glass, microcrystalline glass and the like are continuously increased, and meanwhile, the elements are required to have extremely high surface precision and extremely low roughness, so that high-precision polishing technology and products are increasingly widely applied.

The air bag polishing machine is the most precise polishing equipment used at present due to the fact that pressure adjustment is convenient, the air bag polishing machine is tightly attached to a workpiece, polishing precision is high and good, a rotating shaft of the air bag polishing machine needs to be ventilated while rotating, the existing air bag polishing technology generally adopts a lip-shaped sealing ring to conduct reciprocating type dynamic sealing, however, large friction exists between the lip-shaped sealing ring and a main shaft body, particularly when air pressure is high, the generated friction is large, and certain loss can be caused to the service life of the sealing ring and power of main shaft transmission.

Therefore, there is a need in the technical field of machining equipment for a polishing device that can balance the contradiction between air tightness and high air pressure when a rotating shaft rotates at high speed without using a lip-shaped seal ring, and can significantly improve the wear condition of components.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art's defect provides one kind and does not adopt lip seal, contradiction between gas tightness and the high atmospheric pressure when still can balanced pivot gyration at a high speed to can show the grinding device who improves components and parts wear condition.

The utility model discloses a following technical scheme realizes:

the utility model provides a grinding device, includes the linking arm that can with the driver part rigid coupling, rigid coupling motor on the linking arm, be equipped with the pivot in the motor, the pivot is stretched out motor one end and is equipped with along the axial extension's shaft cavity, the pivot lateral wall is equipped with the air vent, air vent intercommunication pivot lateral wall and shaft cavity inside wall, the position that the pivot corresponds the air vent is equipped with the axle sleeve of ventilating, the axle sleeve of ventilating is close to one side and the casing rigid coupling of motor, the axle sleeve lateral wall of ventilating is equipped with the suction nozzle that can link to each other with the gas pipeline, the position that the axle sleeve inside wall of ventilating corresponds the air vent is equipped with the annular of admitting air, shaft cavity exit rigid coupling.

Furthermore, the position that the ventilation shaft sleeve is attached to the side wall of the rotating shaft is provided with a rolling ring group, the rolling ring group is concentric with the rotating shaft, the rolling ring group comprises a plurality of convex rings and concave rings which are arranged alternately, the convex rings and the concave rings are adjacent to each other, the positions of the rotating shaft corresponding to the convex rings are provided with adaptive concave rings, the positions of the rotating shaft corresponding to the concave rings are provided with adaptive convex rings, and the adaptive convex rings are adjacent to the concave rings and the convex rings are in smooth transition.

Furthermore, a sealing oil film is arranged between the fluctuation ring group and the rotating shaft, an oil filling pipe is arranged on the side wall of the ventilation shaft sleeve, the oil filling pipe comprises a main pipe communicated with the outer side wall of the ventilation shaft sleeve, a plurality of branch pipes are arranged at one end, away from the pipe orifice, of the main pipe, the branch pipes are communicated with the inner wall, at the fluctuation ring group part, of the ventilation shaft sleeve, and a sealing screw is arranged at the pipe orifice of the main pipe.

Furthermore, be equipped with in being responsible for and follow axially sliding's cock disc, the cock disc outer fringe is closely laminated with being responsible for the inner wall, be equipped with the pressure spring between cock disc and the sealing screw.

Furthermore, the air vent is equipped with a plurality ofly, and is a plurality of the air vent circumference equipartition on the pivot lateral wall.

Furthermore, the air bag seat comprises a seat rod capable of being inserted into the shaft cavity, one end, extending out of the shaft cavity, of the seat rod is vertically and fixedly connected with a seat disc, the seat disc is sleeved with the air bag, a folded edge is arranged at the position where the air bag is attached to the seat disc, and a pressing plate capable of extruding the air bag to the seat disc is arranged on the folded edge.

Further, the lateral wall that the pivot is close to the gasbag seat is equipped with the swivel nut, the one end that the swivel nut surpassed the pivot is equipped with the bayonet socket, the position that the seat pole lateral wall corresponds the bayonet socket is equipped with the convex shoulder, the bayonet socket be less than with pivot threaded connection's screw socket.

Further, the accent of shaft cavity is established to the bell mouth that the bore enlarges gradually, the bell mouth position is equipped with the toper chuck, the lateral wall that the chuck stretches out the shaft cavity is equipped with the convex shoulder, the lateral wall that the pivot is close to the gasbag seat is equipped with the swivel nut, the position that the swivel nut corresponds the convex shoulder is equipped with the bayonet socket, the bayonet socket be less than with pivot threaded connection's screw socket.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

be equipped with the lumen in grinding device's the pivot, the lateral wall of lumen is equipped with the air vent, the position that corresponds the air vent is equipped with the axle sleeve of ventilating, the position that the lateral wall corresponds the air vent in the axle sleeve of ventilating is equipped with the air inlet ring groove, thereby make during gas in the gas transmission pipeline can get into the gasbag smoothly through the lumen, the axle sleeve of ventilating forms the sealing oil film with pivot cooperation position, lip seal has been replaced, thereby the contradiction between gas tightness and the high atmospheric pressure when balanced pivot is turned round at a high speed, and can show and improve components and parts wearing and tearing situation, very big spreading value and wide application prospect have.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a sectional view of the whole structure of the present invention;

FIG. 2 is an enlarged view of the point A of FIG. 1 according to the present invention;

FIG. 3 is a perspective view of the overall structure of the present invention;

FIG. 4 is a top view of the overall structure of the present invention;

fig. 5 is a perspective view of a part of the structure of the present invention.

Reference numbers and corresponding part names in the drawings:

1-connecting arm, 11-mounting seat, 12-reinforcing rib, 13-positioning hole, 14-connecting hole, 2-motor, 21-rotating shaft, 22-shaft cavity, 23-vent hole, 3-vent shaft sleeve, 31-fluctuation ring group, 32-oil injection pipe, 33-sealing screw, 34-plug disc, 35-pressure spring, 4-air inlet nozzle, 5-air bag seat, 6-screw sleeve, 7-clamping head, 71-sealing ring, 8-air bag and 9-pressing plate.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

The utility model provides a grinding device, includes linking arm 1 that can with the driver part rigid coupling, rigid coupling motor 2 on the linking arm 1, be equipped with pivot 21 in the motor 2, pivot 21 stretches out 2 one ends of motor and is equipped with along the axial extension's shaft cavity 22, the 21 lateral walls of pivot are equipped with air vent 23, air vent 23 intercommunication 21 lateral walls of pivot and shaft cavity 22 inside wall, the position that pivot 21 corresponds air vent 23 is equipped with the axle sleeve 3 of ventilating, the axle sleeve 3 of ventilating is close to one side and the casing rigid coupling of motor 2, the 3 lateral walls of axle sleeve of ventilating is equipped with the suction nozzle 4 that can link to each other with the gas pipeline, the position that the 3 inside walls of axle sleeve of ventilating corresponds air vent 23 is equipped with the air inlet ring groove, shaft cavity 22 exit rigid coupling gasbag seat 5, be equipped. Further, the process parameters of the matching part of the rotating shaft 21 and the ventilation shaft sleeve 3 include: the fit clearance at the mutual fit position of the inner side wall of the ventilation shaft sleeve 21 and the outer side wall of the rotating shaft 3 is more than or equal to 0.005mm and less than or equal to delta and less than or equal to 0.05 mm; and/or the surface roughness of the matching part of the outer side wall of the rotating shaft 21 and the ventilation shaft sleeve 3 is Ra0.08-0.8, and the surface roughness of the matching part of the inner side wall of the ventilation shaft sleeve 3 and the rotating shaft 21 is Ra0.08-1.6; and/or the circle run-out tolerance of the rotating shaft 21 is 0.005 mm-0.05 mm, and the cylindricity tolerance of the ventilation shaft sleeve 3 is 0.005 mm-0.05 mm.

It should be noted that, the use steps of the polishing device of the present invention include: the gas transmission pipeline sends compressed gas with certain preset pressure into the ventilation shaft sleeve 3 through the gas inlet nozzle 4, then the compressed gas is guided to the vent hole 23 through the gas inlet ring groove and enters the shaft cavity 22, finally the compressed gas enters the air bag 8 through the hollow seat rod of the air bag seat 5, the constant pressure of the air bag is ensured, when polishing operation is carried out, the rotating shaft 2 rotates at high speed, the air bag seat 5 and the air bag 8 are driven to rotate, the connecting arm 1 starts to act under the action of a driving part, the attachment of the air bag and a workpiece is realized, and the removal amount is determined by preset parameters such as the pressure and the extrusion force of the compressed gas, the.

It can be understood that, the surface roughness, the cooperation tolerance of the cooperation department of ventilation axle sleeve 3 inside wall and pivot 21 lateral wall are through a large amount of experiments and debugging, have finally realized forming the oil film and then having ensured the gas tightness on the fitting surface, have still improved the lubricated situation between the spare part simultaneously, help slowing down wearing and tearing, increase of service life, and the process parameter of pivot 21 and ventilation axle sleeve 3 cooperation department includes in practice: the fit clearance at the mutual fit position of the inner side wall of the ventilation shaft sleeve 21 and the outer side wall of the rotating shaft 3 is more than or equal to 0.005mm and less than or equal to 0.05mm, and is preferably more than or equal to 0.005mm and less than or equal to 0.01 mm; and/or the surface roughness of the matching part of the outer side wall of the rotating shaft 21 and the ventilation shaft sleeve 3 is Ra0.08-0.8, preferably Ra0.2 +/-0.05, and the surface roughness of the matching part of the inner side wall of the ventilation shaft sleeve 3 and the rotating shaft 21 is Ra0.08-1.6, preferably Ra0.2 +/-0.05; and/or the circle run-out tolerance of the rotating shaft 21 is 0.005 mm-0.05 mm, preferably 0.005 mm-0.01 mm, and the cylindricity tolerance of the ventilating shaft sleeve 3 is 0.005 mm-0.05 mm, preferably 0.005 mm-0.01 mm. In addition, the perpendicularity of the ventilation sleeve 3 with respect to the mounting surface on the motor 2 is 0.005mm to 0.02mm, preferably 0.01 ± 0.005 mm.

Furthermore, the position of the ventilation shaft sleeve 3, which is attached to the side wall of the rotating shaft 21, is provided with an undulating ring group 31, the undulating ring group 31 is concentric with the rotating shaft 21, the undulating ring group 31 comprises a plurality of convex rings and concave rings which are alternately arranged, the convex rings and the concave rings are adjacent to each other in smooth transition, the position of the rotating shaft 21, which corresponds to the convex rings, is provided with adaptive concave rings, the position of the rotating shaft 21, which corresponds to the concave rings, is provided with adaptive convex rings, and the concave rings and the convex rings are adjacent to each other in smooth transition. It can be understood that the position of the ventilation shaft sleeve 3, which is jointed with the side wall of the rotating shaft 21, is provided with the rolling ring group 31, the position of the rotating shaft 21 corresponding to the convex ring is provided with an adaptive concave ring, the position of the rotating shaft 21 corresponding to the concave ring is provided with an adaptive convex ring, the matching position of the rotating shaft 21 and the ventilation shaft sleeve 3 is convex-concave opposite and undulate, which can more effectively prevent the compressed gas in the air inlet ring groove from escaping along the gap between the rotating shaft 21 and the ventilation shaft sleeve 3, and it should be noted that when the ventilation shaft sleeve 3 is installed on the rotating shaft 21 at the matching position, the ventilation shaft sleeve 3 is heated to expand, so that the raised ring position can pass through the raised ring, and the two are tightly matched after the ventilation shaft sleeve 3 is cooled, sealing oil is injected into a gap between the rotating shaft 21 and the ventilation sleeve 3, and a more airtight sealing oil film can be formed after the rotating shaft 21 rotates.

Furthermore, a sealing oil film is arranged between the fluctuation ring group 31 and the rotating shaft 21, an oil filling pipe 32 is arranged on the side wall of the ventilation shaft sleeve 3, the oil filling pipe 32 comprises a main pipe communicated with the outer side wall of the ventilation shaft sleeve 3, a plurality of branch pipes are arranged at one end, away from the pipe orifice, of the main pipe, the branch pipes are communicated with the inner wall of the part, provided with the fluctuation ring group 31, of the ventilation shaft sleeve 3, and a sealing screw 33 is arranged at the pipe orifice of the main pipe. Further, a plug disc 34 capable of sliding along the axial direction is arranged in the main pipe, the outer edge of the plug disc 34 is tightly attached to the inner wall of the main pipe, and a pressure spring 35 is arranged between the plug disc 34 and the sealing screw 33. It can be understood that, when the sealing oil is injected from the gap between the rotating shaft 21 and the ventilation shaft sleeve 3, the sealing oil cannot be well diffused to the whole matching surface, especially the matching surface close to one side of the motor 1 body, and the injection is also difficult, therefore, the side wall of the ventilation shaft sleeve 3 is provided with the oil injection pipe 32, the oil injection pipe 32 comprises a main pipe communicated with the outer side wall of the ventilation shaft sleeve 3, one end of the main pipe far away from the pipe orifice is provided with a plurality of branch pipes communicated with the matching surface, and the main pipe is screwed with the sealing screw 33 after the oil injection, which is very convenient to operate. The plug disc 34 and the pressure spring 35 are arranged, so that pre-pressure can be provided for the oil film and the oil body in the pipe, the durability of the oil film is improved, the oil film is prevented from being dispersed by compressed gas, the oil body can be supplemented to the inside due to the pressure released by the pressure spring 35 after being somewhat lost, the oil injection maintenance frequency is reduced, and the production efficiency is improved.

Furthermore, the number of the vent holes 23 is multiple, and the vent holes 23 are uniformly distributed on the side wall of the rotating shaft 21 in the circumferential direction. It can be understood that the arrangement of the plurality of vent holes 23 can improve the air intake rate and avoid overhigh local pressure, the plurality of vent holes 23 are uniformly distributed on the rotating shaft 21 in the circumferential direction, so that the stress distribution of the rotating shaft 21 is balanced, for example, two or four vent holes can be arranged oppositely, and if the processing difficulty is not considered, three vent holes 23 with 120 degrees included angles can be arranged.

Further, gasbag seat 5 is including the seat pole that can insert in axle chamber 22, the seat pole stretches out the perpendicular rigid coupling seat dish of axle chamber 22 one end, the gasbag 8 is established to the cover on the seat dish, the position that the gasbag 8 laminating seat dish is equipped with the hem, be equipped with on the hem and be equipped with the clamp plate 9 that can extrude gasbag 8 to the seat dish. It will be appreciated that the provision of the pressure plate 9 has the advantage of ensuring that the bladder can be deflected to the left or right during pressurisation and polishing during operation, and may be a conventional threaded press sleeve, which may be selected according to actual requirements and conditions. In order to keep the compressed gas as far as possible into the hollow seat shaft, a groove can be provided in the side wall of the seat shaft which projects into the shaft chamber 22, in which groove a sealing ring 71 is arranged.

Further, the outer side wall of the rotating shaft 21 close to the airbag seat 5 is provided with a threaded sleeve 6, one end of the threaded sleeve 6, which exceeds the rotating shaft 21, is provided with a bayonet, the position of the seat post side wall, which corresponds to the bayonet, is provided with a convex shoulder, and the bayonet is smaller than a screw port in threaded connection with the rotating shaft 21. Further, the accent of shaft cavity 22 is established to the tapered opening that the bore enlarges gradually, the tapered opening position is equipped with toper chuck 7, the lateral wall that chuck 7 stretches out shaft cavity 22 is equipped with the convex shoulder, the lateral wall that pivot 21 is close to gasbag seat 5 is equipped with swivel nut 6, the position that swivel nut 6 corresponds the convex shoulder is equipped with the bayonet socket, the bayonet socket is less than the screw socket with pivot 21 threaded connection. It can be understood that the two different mounting modes for fixing the air bag seat 5 are realized by fastening the inclusion by using the bayonet at one end of the screw sleeve 6 close to the air bag 8, the inclusion can be the rotating shaft 21 or an externally-connected conical chuck, and a shoulder is arranged at the position corresponding to the bayonet.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

It is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention, and are not intended to indicate or imply that the claimed components or mechanisms must be in a particular orientation, constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only an embodiment of the present invention, and should not be used to limit the protection scope of the present invention, any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a polishing device, includes linking arm (1) that can with the driver part rigid coupling, a serial communication port, rigid coupling motor (2) are gone up in linking arm (1), be equipped with pivot (21) in motor (2), pivot (21) stretch out motor (2) one end and are equipped with axial extension's shaft cavity (22), pivot (21) lateral wall is equipped with air vent (23), air vent (23) intercommunication pivot (21) lateral wall and shaft cavity (22) inside wall, the position that pivot (21) corresponds air vent (23) is equipped with ventilation axle sleeve (3), one side and the casing rigid coupling that ventilation axle sleeve (3) are close to motor (2), ventilation axle sleeve (3) lateral wall is equipped with suction nozzle (4) that can link to each other with the gas pipeline, the position that ventilation axle sleeve (3) inside wall corresponds air vent (23) is equipped with the annular of admitting air, shaft cavity (22) exit rigid coupling gasbag seat (5), and the air bag seat (5) is provided with an air bag (8) for polishing.

2. A polishing device as claimed in claim 1, characterized in that a rolling ring set (31) is provided at a position where the ventilation shaft sleeve (3) is attached to the side wall of the rotation shaft (21), the rolling ring set (31) is concentric with the rotation shaft (21), the rolling ring set (31) comprises a plurality of convex rings and concave rings arranged alternately, the adjacent convex rings and concave rings are in smooth transition, an adaptive concave ring is provided at a position of the rotation shaft (21) corresponding to the convex rings, an adaptive convex ring is provided at a position of the rotation shaft (21) corresponding to the concave rings, and the adjacent concave rings and convex rings are in smooth transition.

3. A grinding device as claimed in claim 2, characterized in that a sealing oil film is arranged between the rolling ring set (31) and the rotating shaft (21), an oil filling pipe (32) is arranged on the side wall of the ventilation shaft sleeve (3), the oil filling pipe (32) comprises a main pipe communicated with the outer side wall of the ventilation shaft sleeve (3), one end of the main pipe far away from the pipe orifice is provided with a plurality of branch pipes, the branch pipes are communicated with the inner wall of the ventilation shaft sleeve (3) at the position where the rolling ring set (31) is arranged, and the pipe orifice of the main pipe is provided with a sealing screw (33).

4. A sanding device as defined in claim 3, characterized in that the main tube is provided with an axially slidable plug disc (34), the outer edge of the plug disc (34) being in close contact with the inner wall of the main tube, and that a compression spring (35) is provided between the plug disc (34) and the sealing screw (33).

5. A sanding device according to claim 1, characterized in that said air vent (23) is provided in a plurality, said air vent (23) being circumferentially distributed around the side wall of the shaft (21).

6. The polishing device as claimed in claim 1, wherein the air bag seat (5) comprises a seat rod capable of being inserted into the shaft cavity (22), one end of the seat rod extending out of the shaft cavity (22) is vertically fixed on a seat disc, the seat disc is sleeved with the air bag (8), a folded edge is arranged at a position where the air bag (8) is attached to the seat disc, and a pressing plate (9) capable of pressing the air bag (8) to the seat disc is arranged on the folded edge.

7. A polishing device as claimed in claim 6, characterized in that the outer side wall of the rotating shaft (21) close to the airbag seat (5) is provided with a threaded sleeve (6), one end of the threaded sleeve (6) beyond the rotating shaft (21) is provided with a bayonet, the position of the side wall of the seat post corresponding to the bayonet is provided with a shoulder, and the bayonet is smaller than the screw connected with the rotating shaft (21) in a threaded manner.

8. A grinding device as claimed in claim 6, characterized in that the opening of the shaft cavity (22) is a tapered opening with gradually enlarged diameter, a tapered chuck (7) is arranged at the position of the tapered opening, a shoulder is arranged on the side wall of the chuck (7) extending out of the shaft cavity (22), a threaded sleeve (6) is arranged on the outer side wall of the rotating shaft (21) close to the air bag seat (5), a bayonet is arranged on the position of the threaded sleeve (6) corresponding to the shoulder, and the bayonet is smaller than the screw opening in threaded connection with the rotating shaft (21).