CN219094778U

CN219094778U - Constant-pressure compensation polishing main shaft structure

Info

Publication number: CN219094778U
Application number: CN202320242324.0U
Authority: CN
Inventors: 吕辉; 杨春丽; 梁信华; 刘方亮
Original assignee: Guangdong Suilian Intelligent Equipment Manufacturing Co ltd
Current assignee: Guangdong Suilian Intelligent Equipment Manufacturing Co ltd
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-05-30
Anticipated expiration: 2033-02-17

Abstract

The utility model discloses a constant-pressure compensation polishing spindle structure. The utility model provides a constant pressure compensation's polishing main shaft structure, includes driving motor and with driving motor's output shaft the main shaft facial make-up is equipped with the bearing housing overcoat is equipped with cylinder barrel seat and the rear end and the driving motor of this cylinder barrel seat are connected, the output of main shaft extends to cylinder barrel seat front end outside and is connected with an abrasive disc, the space between cylinder barrel seat and the bearing housing front end forms cylinder barrel front cavity, the space between cylinder barrel seat, driving motor and the bearing housing rear end forms cylinder barrel rear cavity be equipped with the preceding air inlet joint that can communicate cylinder barrel front cavity on the cylinder barrel seat, and be equipped with the back air inlet joint that can communicate cylinder barrel rear cavity on the driving motor. The utility model can realize automatic compensation feeding, can effectively protect the main shaft and is beneficial to ensuring the consistency of the effects after the product is processed.

Description

Constant-pressure compensation polishing main shaft structure

Technical Field

The utility model relates to the technical field of grinding and polishing equipment, in particular to a constant-pressure compensation grinding and polishing main shaft structure which can realize automatic compensation feeding, effectively protect a main shaft and is beneficial to ensuring the consistency of effects after product processing.

Background

At present, the electric spindle is mostly used for realizing high-precision, high-rotating speed and high-efficiency polishing cutting processing on products in the market, the traditional polishing photoelectric spindle can only drive grinding materials to rotate at a high speed in a fixed mode when polishing, processing torque is transmitted, the polishing photoelectric spindle can not automatically compensate for the polishing along with the change of the shape of the workpiece products, in addition, the workpiece deformation, grinding material cutter abrasion, product fixture clamping errors, errors caused by the complex 3D curved surfaces of products and the like can also occur during processing, when the grinding materials, cutter abrasion and workpiece deformation and grinding material errors are deviated from ideal states, the phenomenon that the surface of the workpiece is excessively polished or cannot be polished is easily caused, therefore, in the traditional processing, the traditional electric spindle is required to be additionally provided with a motor, a linear guide rail, a screw rod and other devices to realize the compensation on the axial position, thereby finishing the polishing function; the utility model relates to a constant force polishing head mechanism, which is disclosed in China patent No. ZL201811179659.2 and publication dates 2021-12-24, and comprises a robot connecting flange, a linear motor, a balance low-friction cylinder, a motor flange seat, a top connecting flange, an air source connector, a shell, a floating universal connecting seat, a radial constant force floating air ring, a spindle motor and a front fixing flange; the bottom of the robot connecting flange is vertically connected with a linear motor, two sides of the robot connecting flange are vertically connected with a balance low-friction air cylinder, the bottom end of the balance low-friction air cylinder is connected with a motor flange seat, and the upper top surface of the motor flange seat is connected with the bottom of the linear motor; the bottom of the top connecting flange is connected with the shell; an annular mounting groove is formed in the inner wall of the inner cavity of the shell; a radial constant force floating gas ring is arranged in the annular mounting groove, and a plurality of constant force pistons are uniformly distributed on the radial constant force floating gas ring; the spindle motor penetrates through the radial constant force floating gas ring, one end of the constant force piston is attached to the outer wall of the spindle motor, and the bottom of the spindle motor is connected with the grinding head. However, the pressure compensation in the radial direction is mainly used for stabilizing the main shaft and the grinding head, so that the main shaft cannot automatically feed and compensate to finish grinding and polishing along with the change of the shape of a workpiece product, and larger errors still exist when the product with a complex shape is processed, and the processed product has poor effect.

How to solve the problems is a technical problem to be solved.

Disclosure of Invention

The utility model aims to provide a constant-pressure compensation polishing main shaft structure which can realize automatic compensation feeding, can effectively protect a main shaft and is beneficial to ensuring the consistency of effects after product processing.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a constant-pressure compensation polishing main shaft structure, which comprises a driving motor and a main shaft connected with an output shaft of the driving motor, wherein a bearing sleeve is arranged on the main shaft, a cylinder barrel seat is sleeved outside the bearing sleeve, the rear end of the cylinder barrel seat is connected with the driving motor, the output end of the main shaft extends to the outer side of the front end of the cylinder barrel seat and is connected with an abrasive disc, a gap between the cylinder barrel seat and the front end of the bearing sleeve forms a cylinder barrel front cavity, a gap between the cylinder barrel seat, the driving motor and the rear end of the bearing sleeve forms a cylinder barrel rear cavity, a front air inlet connector capable of being communicated with the cylinder barrel front cavity is arranged on the cylinder barrel seat, and a rear air inlet connector capable of being communicated with the cylinder barrel rear cavity is arranged on the driving motor.

Further, a front-end air inlet channel is arranged in the cylinder barrel seat, and the front air inlet connector is communicated with the front cavity of the cylinder barrel through the front-end air inlet channel.

Further, a rear air inlet channel is arranged on the driving motor close to the cylinder barrel seat, and the rear air inlet connector is communicated with the rear cavity of the cylinder barrel through the rear air inlet channel.

Further, a cylinder sealing cover is arranged at the front end of the cylinder seat, and the output end of the main shaft is connected with the abrasive disc through the cylinder sealing cover.

Further, the main shaft adopts an internal spline main shaft structure, and the bearing sleeve is movably arranged with the middle part of the main shaft through a bearing.

Further, the driving motor adopts a double-output spline shaft motor structure, and the output shaft is of a double-output spline shaft structure.

Due to the adoption of the structure, the utility model has the following beneficial effects:

the utility model relates to a constant-pressure compensation polishing spindle structure, a driving motor rotates to drive a spindle to rotate, compressed air can be respectively introduced into a front cavity of a cylinder barrel and a rear cavity of the cylinder barrel through a front air inlet connector and a rear air inlet connector, a bearing sleeve on the spindle can be pushed by the compressed air, when an abrasive disc at the front end of the spindle is contacted with the surface of a workpiece and is subjected to external force greater than set air pressure, the compressed air in the rear cavity of the cylinder barrel is compressed, the bearing sleeve and the spindle 2 slightly move in the direction close to the driving motor, when the external force on the abrasive disc at the front end of the spindle is contacted with the surface of the workpiece is less than set air pressure, the bearing sleeve and the spindle 2 are slightly moved in the direction far away from the driving motor by pushing the ejection of the compressed air, so that the bearing sleeve can be matched with a cylinder barrel seat to stabilize the spindle, the grinding disc at the front end of the main shaft can automatically feed and compensate along with the change of the shape of a workpiece product, ensures that the contact pressure of the grinding disc and the workpiece is consistent all the time in the processing process, automatically adjusts the position of the grinding disc in the axial direction, thereby realizing constant-pressure grinding, being beneficial to keeping the consistency of the processed product and improving the yield after processing, in addition, compressed air can be blown into the front cavity of the cylinder barrel through the front air inlet joint in the working process, so that the air pressure in the front cavity of the cylinder barrel is greater than the external atmospheric pressure, a pressure difference is formed, then the air can be discharged along with the gap between the main shaft and the cylinder barrel seat, the cutting fluid and powder are effectively prevented from entering the main shaft in the working process, the main shaft can be effectively protected, and the service life of the main shaft is prevented from being excessively lost, can effectively protect the main shaft and is favorable for ensuring the consistency of the effects after the product is processed.

The utility model will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the utility model.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional view of a constant pressure compensated lapping and polishing spindle configuration of the present utility model; the method comprises the steps of,

fig. 2 is a schematic structural diagram of a constant pressure compensated polishing spindle structure according to the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, the constant pressure compensated polishing spindle structure provided by the utility model comprises a driving motor 1 and a spindle 2 connected with an output shaft 11 of the driving motor 1, wherein a bearing sleeve 3 is arranged on the spindle 2, a cylinder barrel seat 4 is sleeved outside the bearing sleeve 3, the rear end of the cylinder barrel seat 4 is connected with the driving motor 1, the output end of the spindle 2 extends to the outer side of the front end of the cylinder barrel seat 4 and is connected with an abrasive disc 5, a gap between the cylinder barrel seat 4 and the front end of the bearing sleeve 3 forms a cylinder barrel front cavity 41, a gap between the cylinder barrel seat 4, the driving motor 1 and the rear end of the bearing sleeve 3 forms a cylinder barrel rear cavity 42, a front air inlet joint 43 capable of being communicated with the cylinder barrel front cavity 41 is arranged on the cylinder barrel seat 4, and a rear air inlet joint 12 capable of being communicated with the cylinder barrel rear cavity 42 is arranged on the driving motor 1; a certain gap is reserved between the output shaft 11 and the main shaft 2 after the output shaft is matched with the main shaft 2, the main shaft 2 can be driven to rotate by the rotation of the driving motor 1, compressed air can be respectively introduced into the front cavity 41 of the cylinder barrel and the rear cavity 42 of the cylinder barrel through the front air inlet connector 43 and the rear air inlet connector 12, the bearing sleeve 3 on the main shaft 2 can be pushed by the compressed air, when the external force applied to the abrasive disc 5 at the front end of the main shaft 2 and the surface of a workpiece is greater than the set air pressure, the compressed air in the rear cavity 42 of the cylinder barrel is compressed, the bearing sleeve 3 and the main shaft 2 slightly move towards the direction close to the driving motor 1, when the external force applied to the abrasive disc 5 at the front end of the main shaft 2 and the surface of the workpiece is less than the set air pressure, the bearing sleeve 3 and the main shaft 2 are pushed out by the compressed air, the bearing sleeve 3 and the main shaft 2 slightly move towards the direction far away from the driving motor 1, therefore, the bearing sleeve 3 can be matched with the cylinder barrel seat 4 to stabilize the main shaft 2, the abrasive disc 5 at the front end of the main shaft 2 can be automatically fed and compensated along with the change of the shape of a workpiece product, the contact pressure of the abrasive disc 5 and the workpiece is always consistent in the processing process, constant-pressure polishing is realized, the consistency of the processed product is favorably maintained, the yield after processing is improved, in addition, compressed air can be blown into the front cavity 41 of the cylinder barrel through the front air inlet joint 43 in the working process, the air pressure in the front cavity 41 of the cylinder barrel is higher than the external atmospheric pressure, a pressure difference is formed, then the air can be discharged along with the gap between the main shaft 2 and the cylinder barrel seat 4, the cutting fluid and powder are effectively prevented from entering the main shaft 2 in the working process, the main shaft 2 is effectively protected, and the service life of the main shaft 2 is prevented from being excessively lost.

In the utility model, a front-end air inlet channel 44 is arranged in the cylinder barrel seat 4, and an air inlet joint 43 is communicated with a cylinder barrel front cavity 41 through the front-end air inlet channel 44; the front air inlet joint 43 is connected with an external air pump, and compressed air can enter the front cavity 41 of the cylinder barrel through the front air inlet joint 43 and the front air inlet channel 44.

In the utility model, a rear air inlet channel 13 is arranged on a driving motor 1 close to a cylinder seat 4, and a rear air inlet joint 12 is communicated with a cylinder barrel rear cavity 42 through the rear air inlet channel 13; the rear air inlet joint 12 is connected with an external air pump, and compressed air can enter the cylinder barrel rear cavity 42 through the rear air inlet joint 12 and the rear end air inlet channel 13.

In the utility model, the front end of a cylinder block 4 is provided with a cylinder sealing cover 45, and the output end of a main shaft 2 is connected with an abrasive disc 5 through the cylinder sealing cover 45; the cylinder block 4 and the cylinder sealing cover 45 are matched with the main shaft 2 to be installed together, so as to play a role in stabilizing the main shaft 2.

In the utility model, the main shaft 2 adopts an internal spline main shaft structure, and the bearing sleeve 3 is movably arranged with the middle part of the main shaft 2 through the bearing 31; a certain gap is reserved between the main shaft 2 of the internal spline main shaft structure and the output shaft 11 after the main shaft 2 is matched, feeding compensation is facilitated, the bearing sleeve 3 and the bearing 31 arranged in the bearing sleeve 3 are movably connected with the middle part of the main shaft 2, and the main shaft 2 can be stabilized by the bearing sleeve 3 and the bearing 31.

In the utility model, the driving motor 1 adopts a double-output spline shaft motor structure, and the output shaft 11 adopts a double-output spline shaft structure; the output shaft 11 of the double-output spline shaft structure can be provided with stations, so that a plurality of products can be processed simultaneously, and the processing efficiency is improved.

When the utility model is specifically used, the main shaft 2 is meshed with the output shaft 11, the bearing sleeve 3 is sleeved on the main shaft 2 through the bearing 31 and sleeved with the cylinder seat 4, the main shaft 2 is matched and fixed with the cylinder seat 4 through the cylinder sealing cover 45, the front air inlet joint 43 and the rear air inlet joint 12 are respectively connected with an external air pump, the abrasive disc 5 is arranged at the front end of the main shaft 2, during the processing, when the abrasive disc 5 is contacted with the surface of a workpiece and is subjected to external force which is larger than the set air pressure, compressed air in the rear cavity 42 of the cylinder barrel is compressed, at the moment, the bearing sleeve 3 is pushed out by the compressed air, the abrasive disc 5 is automatically removed to complete feeding compensation action along with the change of the shape of the workpiece product, the abrasive disc 5 is always consistent with the pressure of the workpiece in the processing, and the constant pressure polishing can be realized, in the front cavity 41 of the main shaft can be enabled to be larger than the atmospheric pressure difference between the front cavity 41 of the cylinder barrel and the air pressure of the front cavity 41 of the cylinder barrel and the air pressure which is larger than the set air pressure which is equal to the set air pressure, and the air pressure of the workpiece is discharged from the outside of the cylinder seat 2 along with the workpiece, and the cutting gap is effectively protected from the working gap 2.

The preferred embodiments of the present utility model have been described above. It is to be understood that the utility model is not limited to the specific embodiments described above, wherein devices and structures not described in detail are to be understood as being implemented in a manner common in the art; any person skilled in the art can make many possible variations and modifications to the technical solution of the present utility model or modifications to equivalent embodiments without departing from the scope of the technical solution of the present utility model, using the methods and technical contents disclosed above, without affecting the essential content of the present utility model. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. The utility model provides a constant pressure compensation's polishing main shaft structure of polishing which characterized in that: including driving motor (1) and main shaft (2) of being connected with output shaft (11) of driving motor (1) main shaft (2) facial make-up is equipped with bearing housing (3) overcoat is equipped with cylinder barrel seat (4) and the rear end and driving motor (1) of this cylinder barrel seat (4) are connected, the output of main shaft (2) extends to cylinder barrel seat (4) front end outside and is connected with an abrasive disc (5), space between cylinder barrel seat (4) and bearing housing (3) front end forms cylinder barrel front cavity (41), space between cylinder barrel seat (4), driving motor (1) and bearing housing (3) rear end forms cylinder barrel rear cavity (42) be equipped with on cylinder barrel seat (4) front air inlet connector (43) that can communicate cylinder barrel front cavity (41), and be equipped with on driving motor (1) back air inlet connector (12) that can communicate cylinder barrel rear cavity (42).

2. The constant pressure compensated lapping and polishing spindle configuration of claim 1, wherein: a front-end air inlet channel (44) is arranged in the cylinder seat (4), and the front air inlet joint (43) is communicated with the cylinder barrel front cavity (41) through the front-end air inlet channel (44).

3. The constant pressure compensated lapping and polishing spindle configuration of claim 2, wherein: a rear air inlet channel (13) is arranged on the driving motor (1) close to the cylinder seat (4), and the rear air inlet joint (12) is communicated with the cylinder barrel rear cavity (42) through the rear air inlet channel (13).

4. A constant pressure compensated lapping and polishing spindle configuration as claimed in claim 3, wherein: the front end of the cylinder seat (4) is provided with a cylinder sealing cover (45), and the output end of the main shaft (2) is connected with the abrasive disc (5) through the cylinder sealing cover (45).

5. A constant pressure compensated lapping and polishing spindle configuration as claimed in claim 1 or 2, wherein: the main shaft (2) adopts an internal spline main shaft structure, and the bearing sleeve (3) is movably arranged at the middle part of the main shaft (2) through a bearing (31).

6. A constant pressure compensated lapping and polishing spindle configuration as claimed in claim 1 or 2, wherein: the driving motor (1) adopts a double-output spline shaft motor structure, and the output shaft (11) adopts a double-output spline shaft structure.