CN209998944U

CN209998944U - single-transmission planetary polishing device

Info

Publication number: CN209998944U
Application number: CN201920445842.6U
Authority: CN
Inventors: 姚永胜; 赵蒙; 沈乐; 丁蛟腾; 李奇炘; 马臻; 樊学武
Original assignee: XiAn Institute of Optics and Precision Mechanics of CAS; University of Chinese Academy of Sciences
Current assignee: XiAn Institute of Optics and Precision Mechanics of CAS; University of Chinese Academy of Sciences
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2020-01-31
Anticipated expiration: 2029-04-03

Abstract

The utility model relates to an end device for polishing, aiming at the defects of unstable transmission, complex structure, large motion inertia and the like of the existing planet polishing device, single-transmission planet polishing devices are provided, the device comprises an installation seat, a driving motor, a driving shaft, a driven shaft and a sun gear assembly, the sun gear assembly comprises a sun gear sleeve, a turntable, a hollow slider, a transition connecting piece and a polishing disk, the sun gear sleeve is a convex connecting sleeve with an opening at the upper part and the lower part, the small end of the sun gear sleeve is fixedly arranged at the lower part of the installation seat, the large end of the sun gear sleeve is positioned outside the installation seat, the axis of the turntable is provided with a through hole, the lower part of the turntable is provided with a T-shaped groove, the upper end of the hollow slider is provided with a clamping groove clamped into the T-shaped groove, the driven shaft is arranged on the sun gear sleeve in a penetrating way, the end of the sun gear sleeve is connected with the turntable, the large end of the sun gear sleeve is fixedly arranged at.

Description

single-transmission planetary polishing device

Technical Field

The utility model relates to an end device for polishing , concretely relates to single drive planet burnishing devices.

Background

However, because the aspheric optical element is not curvature-induced, the required ultra-precision machining technology directly restricts the further development and application of the aspheric surface , and how to greatly improve the surface shape error convergence rate of the optical aspheric surface is a key problem to be solved urgently in .

At present, the computer-controlled optical surface forming technology is widely applied to the field of aspheric surface processing by , and the technology utilizes quantitative surface shape error data obtained by detection, combines a removal function and a preset processing path, and obtains residence time according to an algorithm determined by , so that the surface shape error is gradually converged, and finally meets the processing requirement.

The planet polishing technology is kinds of polishing technology commonly used in the current computer control optical surface forming technology, but the existing planet polishing device has the problems of large moment of inertia, complex structure of the polishing head, unstable power transmission and the like.

For example, chinese patent (application No. CN200810051132.1) discloses a planetary active polishing device and method for optical elements, which uses a parallel four-bar linkage mechanism to realize flat rotation, and a planetary motor drives a polishing mold to rotate by a flexible shaft.

For another example, chinese patent (application No. CN201410554563.5) discloses large-caliber aspheric robot planetary polishing devices, in which rotation and revolution of the device are driven by two servo motors respectively, a revolution transmission mechanism realizes the flat rotation of planetary motion, and a rotation transmission mechanism adopts a secondary belt transmission to fix the rotation motor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming current planet burnishing device transmission is not steady, the structure is complicated, inertia of motion is big etc. not enough, and provides kinds of single drive planet burnishing devices, this burnishing device if combine computer control technology, can realize high-efficient high accuracy optical element's polishing, is applicable to the precision polishing of heavy-calibre aspheric surface component.

The technical scheme includes that the single-transmission planetary polishing device is and is characterized by comprising an installation seat, a driving motor, a driving shaft, a driven shaft and a sun wheel assembly, wherein the driving motor, the driving shaft, the driven shaft and the sun wheel assembly are arranged on the installation seat, an output shaft of the driving motor is connected with the driving shaft, the driving shaft is connected with the driven shaft through a transmission mechanism, the sun wheel assembly comprises a sun wheel sleeve, a rotary disc, a hollow slide block, a transition connecting piece and a polishing disc, the sun wheel sleeve is a convex connecting sleeve with openings at the upper and lower parts, the small end of the sun wheel sleeve is fixedly arranged at the lower part of the installation seat, the large end of the sun wheel sleeve is located outside the installation seat, a through hole is formed in the axis of the rotary disc, a T-shaped groove transversely penetrating through the rotary disc is formed in the lower part of the rotary disc, a clamping groove matched with the T-shaped groove is formed in the upper end of the hollow slide block, the upper end of the large end of the sun wheel sleeve is clamped into the T-shaped groove and can move along the T-shaped groove, the driven shaft penetrates through the sun wheel sleeve, the end of the sun wheel sleeve extends into the large end of the rotary disc and is rotatably meshed with the transition connecting piece.

, the cross section of the through hole is polygonal and can be rectangular, square or regular hexagon, the end of the driven shaft connected with the turntable is matched with the through hole, the inner wall of the big end of the sun wheel sleeve is provided with a turntable bearing, the inner ring of the turntable bearing is sleeved on the outer surface of the turntable, a pressing ring used for pressing the turntable bearing is further arranged between the turntable bearing and the sun wheel, the outer wall of the pressing ring is tightly attached to the inner wall of the big end of the sun wheel sleeve, and the steps are carried out to reduce the rotation swing of the turntable and enable the turntable to run more stably by arranging the turntable bearing.

the transition piece is hinged with the polishing disk, which can be pressed to the mirror surface by the spherical hinge to ensure the stability of the polishing removal of the workpiece.

, the driven shaft is a hollow stepped shaft, an upper rotary joint is arranged at the upper end of the hollow stepped shaft, the transition connecting piece is an air cylinder, a lower rotary joint is arranged at an air inlet at the upper end of the air cylinder and communicated with the lower end of the hollow driven shaft through a pipeline, and a piston rod at the lower end of the air cylinder is hinged with the polishing disc.

, the upper end of the outer circumference of the rotary disk is provided with circles of flanges for axially positioning the rotary disk.

, the transmission mechanism is a gear transmission mechanism or a belt transmission mechanism or a chain transmission mechanism.

the belt drive mechanism includes small driving belt wheel on the driving shaft, large driven belt wheel on the driven shaft and toothed belt to connect the driving belt wheel and the driven belt wheel.

, the driving shaft and the driven shaft are parallel and spaced, the mounting base comprises a base and a supporting shell fixedly arranged on the upper surface of the base, the base is provided with a mounting hole for mounting the driving shaft and a second mounting hole for mounting the sun wheel sleeve, the top of the supporting shell is provided with a third mounting hole for mounting the driving motor, the driving shaft is mounted in a mounting hole through a bearing, the small end of the sun wheel sleeve is fixedly mounted in the second mounting hole, the supporting shell seals the transmission mechanism to prevent the fragments of the toothed belt from falling onto the mirror surface, and the structure of the supporting shell is adopted, so that the supporting shell is easy to disassemble, the transmission belt wheel can be conveniently replaced, and the revolution-rotation speed ratio can be adjusted.

, the upper part of the transition piece is mounted in the hollow slide block by rolling bearings or sliding bearings.

The utility model also provides another single-drive planet polishing device, which is characterized by comprising an installation seat, a drive motor, a drive shaft and a sun wheel assembly, wherein the drive motor, the drive shaft and the sun wheel assembly are arranged on the installation seat, the sun wheel assembly comprises a sun wheel sleeve, a rotary disc, a hollow slide block, a transition connecting piece and a polishing disc, the sun wheel sleeve is a hollow connecting sleeve with an opening at the upper part and the lower part, the end of the hollow connecting sleeve is fixedly arranged at the lower part of the installation seat, the other end is positioned outside the installation seat, a through hole is arranged at the axle center of the rotary disc, a T-shaped groove transversely penetrates through the rotary disc is arranged at the lower part, a clamping groove matched with the T-shaped groove is arranged at the upper end of the hollow slide block, the upper end of the hollow slide block is clamped into the T-shaped groove and can move along the T-shaped groove, the end of the drive shaft is connected with an output shaft of the drive motor, the other end of the hollow slide block penetrates through the opening at the installation seat and the end of the sun wheel sleeve, and then extends into the cavity of the sun wheel sleeve and is connected with the rotary disc arranged in the sun wheel sleeve.

, a cavity is formed in the mounting seat, the driving shaft is a hollow stepped shaft, a exhaust hole is formed in the side wall of the driving shaft, an exhaust assembly is arranged in the cavity of the mounting seat and comprises an annular revolving body, an annular sleeve body and a bearing, the annular revolving body and the bearing are coaxially and sequentially arranged on the outer side of the driving shaft, the bearing is arranged between the annular revolving body and the annular sleeve body, the annular revolving body is in interference fit with the driving shaft, an annular groove communicated with the exhaust hole is formed in the annular revolving body, an air nozzle joint communicated with the annular groove is arranged on the outer side of the annular sleeve body, an air hole communicated with the cavity of the mounting seat is formed in the mounting seat, the transition connecting piece is an air cylinder, a rotary joint is arranged at an air inlet at the upper end of the air cylinder and communicated with the lower end of the hollow driving shaft through a pipeline, a turntable bearing is arranged in the cavity of the sun wheel sleeve, the inner ring of the turntable bearing is sleeved on the outer surface of the turntable, a pressing ring for.

Compared with the prior art, the utility model has the advantages that:

1. the utility model discloses an adopt planetary gear train structure, only with motors just realize the revolution and the rotation of polishing dish for burnishing device simple structure, light in weight, inertia are little.

2. The utility model supplies compressed air to the cylinder through the upper rotary joint, the central hole of the driven shaft and the lower rotary joint, and controls the polishing pressure of the polishing disk; and the polishing disc can be positively pressed on the mirror surface through the spherical hinge, so that the stability of the polishing removal amount of the processed workpiece is effectively ensured.

3. The utility model adopts the transmission mechanism and the sun wheel component, and can change the number of teeth by simultaneously replacing the sun wheel and the planet wheel, thereby conveniently realizing the fine adjustment of revolution and rotation speeds; the eccentricity of the polishing disk can be conveniently changed by replacing the number of teeth of the planet wheel.

4. The utility model discloses burnishing device combines computer control technology, can realize high-efficient high accuracy optical element's polishing, is applicable to the accurate polishing of heavy-calibre aspheric surface component.

Drawings

FIG. 1 is a schematic view of the overall structure of the polishing apparatus of the present invention;

FIG. 2 is an isometric view of the turntable of the polishing apparatus of the present invention;

FIG. 3 is a perspective view of the hollow slide block of the polishing device of the present invention;

FIG. 4 is a front cross-sectional view of an embodiment of the polishing apparatus of the present invention;

FIG. 5 is a front sectional view of a second embodiment of the polishing apparatus of the present invention;

FIG. 6 is a front sectional view of a third embodiment of the polishing apparatus of the present invention;

FIG. 7 is a front sectional view of a fourth embodiment of the polishing apparatus of the present invention;

FIG. 8 is a front sectional view of a fifth embodiment of the polishing apparatus of the present invention;

fig. 9 is a partial enlarged view at i of fig. 8.

The reference numerals in the drawings are explained as follows:

1-mounting seat, 11-base, 12-supporting shell;

2, driving a motor;

3-driving shaft, 31- th exhaust hole;

4-drive mechanism, 41-initiative small belt wheel, 42-cog belt, 43-driven big belt wheel;

5-driven shaft, 51-upper rotary joint;

6-a sun wheel assembly;

61-sun gear sleeve, 611-turntable bearing, 612-pressing ring, 613-sun gear;

62-rotary table, 621-through hole, 622-T-shaped groove;

63-hollow slide block;

64-transition piece, 641-planet, 642-lower rotary joint;

65-polishing disc;

7-exhaust component, 71-annular rotator, 711-annular groove, 72-annular sleeve body, 74-air nozzle joint and 75-air hole.

Detailed Description

The present invention will be described in further detail in with reference to the following drawings and examples.

Example

As shown in fig. 1 and 4, the present embodiment provides single-transmission planetary polishing apparatuses, which include a mounting base 1, a driving motor 2, a driving shaft 3, a transmission mechanism 4, a driven shaft 5, and a sun gear assembly 6, wherein the sun gear assembly 6 includes a sun gear sleeve 61, a rotary disc 62, a hollow slide block 63, a transition connection member 64, and a polishing disc 65.

The mounting seat 1 comprises a base 11 and a supporting shell 12 fixedly arranged on the upper surface of the base 11, wherein the base 11 is provided with a th mounting hole for mounting the driving shaft 3 and a second mounting hole for mounting the sun wheel sleeve 61, the top of the supporting shell 12 is provided with a third mounting hole for mounting the driving motor 2, and the driven shaft 5 is arranged in the mounting seat 1 in parallel with the driving shaft 3 at intervals.

The sun wheel sleeve 61 is a convex connecting sleeve with an opening at the upper part and the lower part, the small end of the connecting sleeve is fixedly arranged at the lower part of the mounting base 1, and the large end of the connecting sleeve is positioned outside the mounting base 1.

The output shaft of the driving motor 2 is connected with the driving shaft 3 through a coupling, and the driving shaft 3 is connected with the driven shaft 5 through a transmission mechanism 4. The transmission mechanism 4 is a belt transmission mechanism, and specifically includes a small driving pulley 41 disposed on the driving shaft 3, a large driven pulley 43 disposed on the driven shaft 5, and a toothed belt 42 connecting the driving pulley and the driven pulley.

As shown in fig. 2, the axis of the turntable 62 is provided with a through hole 621, and the lower part of the turntable 62 is provided with a T-shaped groove 622 transversely penetrating through the turntable 62; as shown in fig. 3, the upper end of the hollow slide block 63 is provided with a slot adapted to the T-shaped slot 622, and the upper end thereof is clamped in the T-shaped slot 622 and can move along the T-shaped slot 622; after the eccentricity is adjusted, the eccentric distance is fixed by a screw on the hollow slide block 63.

The driven shaft 5 is arranged on the sun wheel sleeve 61 in a penetrating way through a bearing, and the end of the driven shaft extends into the big end through the small end of the sun wheel sleeve 61 and is connected with the turntable 62 arranged in the big end of the sun wheel sleeve 61 through the through hole 621 to drive the turntable 62 to rotate.

A sun gear 613 with internal teeth is fixedly arranged on the inner wall of the end head of the large end of the sun gear sleeve 61; the upper part of the transition connecting piece 64 is arranged in the hollow sliding block 63 through a rolling bearing, and the polishing disc 65 is connected with the transition connecting piece 64 through a spherical hinge; the lower part of the transition piece 64 extends out of the hollow slide block 63, and the outer circumference of the transition piece is fixedly sleeved with a planet wheel 641 engaged with the sun wheel 613.

The working process of the embodiment:

when polishing operation is carried out, the driving motor 2 drives the driving shaft 3 to rotate.

The driving shaft 3 rotates the driven shaft 5 through the transmission mechanism 4, the driven shaft 5 drives the turntable 62 to rotate, and the turntable 62 enables the transition connecting piece 64 to revolve around the driven shaft 5 through the hollow slide block 63; the transition piece 64 drives the polishing disc 65 to revolve around the driven shaft 5 through the planet wheel 641 meshed with the sun wheel 613 in the sun wheel sleeve 61; the polishing disk 65 rotates around its central axis while revolving.

During polishing, the eccentricity of the polishing disk can be adjusted by replacing the planet gears 641 with different numbers of teeth and adjusting the position of the hollow slide block on the rotating disk 61 in a matching manner.

The number of teeth of the sun gear 613 and the planet gear 641 can be changed by replacing the sun gear 613 and the planet gear 641 at the same time, so that the revolution and rotation speed can be finely adjusted conveniently.

Example two

As shown in fig. 1 and 5, the present embodiment provides single-transmission planetary polishing apparatuses, including a mounting base 1, a driving motor 2, a driving shaft 3, a transmission mechanism 4, a driven shaft 5 and a sun gear assembly 6, where the driven shaft 5 is a hollow stepped shaft, and an upper end of the driven shaft is provided with an upper rotary joint 51, and the sun gear assembly 6 includes a sun gear sleeve 61, a rotary disk 62, a hollow slider 63, a transition connector 64 and a polishing disk 65.

The sun wheel sleeve 61 is a convex connecting sleeve with an opening at the upper part and the lower part, the small end of the connecting sleeve is fixedly arranged at the lower part of the mounting base 1, and the large end of the connecting sleeve is positioned outside the mounting base 1. The transition connecting piece 64 is a cylinder, a lower rotary joint 642 is arranged at an air inlet at the upper end of the cylinder, and the lower rotary joint 642 is communicated with the lower end of the hollow driven shaft 5 through a pipeline.

The working process of the embodiment:

The polishing pressure of the polishing disk 65 can also be controlled by supplying compressed air to the air cylinder through the upper rotary joint 51, the center hole of the driven shaft 5, and the lower rotary joint 642.

EXAMPLE III

As shown in fig. 1 and 6, the present embodiment provides single-transmission planetary polishing apparatuses, which include a mounting base 1, a driving motor 2, a driving shaft 3, a transmission mechanism 4, a driven shaft 5, and a sun gear assembly 6, wherein the sun gear assembly 6 includes a sun gear sleeve 61, a rotary table 62, a hollow slider 63, a transition connection member 64, and a polishing disk 65.

As shown in fig. 2, the axis of the turntable 62 is provided with a through hole 621 with a square cross section, and the lower part of the turntable 62 is provided with a T-shaped groove 622 transversely penetrating through the turntable 62; as shown in fig. 3, the upper end of the hollow slide block 63 is provided with a slot adapted to the T-shaped slot 622, and the upper end thereof is clamped in the T-shaped slot 622 and can move along the T-shaped slot 622; after the eccentricity is adjusted, the eccentric distance is fixed by a screw on the hollow slide block 63.

The driven shaft 5 penetrates through the sun wheel sleeve 61 through a bearing, the end connected with the rotary disc 62 is matched with the through hole 621 in shape, the end extends into the large end through the small end of the sun wheel sleeve 61 and is inserted into the square through hole 621, so that the driven shaft 5 can drive the rotary disc 62 arranged in the large end of the sun wheel sleeve 61 to rotate, the end of the driven shaft 5 can be fixedly connected with the through hole 621 in other modes such as interference fit or welding, and the like.

The inner wall of the big end of the sun wheel sleeve 61 is provided with a turntable bearing 611, the inner ring of the turntable bearing 611 is sleeved on the outer surface of the turntable 62, and the upper end of the outer circumference of the turntable 62 is provided with rings of flanges for axially positioning the turntable 62.

A sun gear 613 with internal teeth is fixedly arranged on the inner wall of the end head of the large end of the sun gear sleeve 61; a pressing ring 612 for pressing the turntable bearing 611 is arranged between the turntable bearing 611 and the sun gear 613, and the outer wall of the pressing ring 612 is tightly attached to the inner wall of the large end of the sun gear sleeve 61.

The upper part of the transition connecting piece 64 is arranged in the hollow sliding block 63 through a rolling bearing, and the polishing disc 65 is connected with the transition connecting piece 64 through a spherical hinge; the lower part of the transition piece 64 extends out of the hollow slide block 63, and the outer circumference of the transition piece is fixedly sleeved with a planet wheel 641 engaged with the sun wheel 613.

The working process of the embodiment:

Example four

As shown in fig. 1 and 7, the present embodiment provides single-transmission planetary polishing apparatuses, including a mounting base 1, a driving motor 2, a driving shaft 3, a transmission mechanism 4, a driven shaft 5 and a sun gear assembly 6, where the driven shaft 5 is a hollow stepped shaft, and an upper end of the driven shaft is provided with an upper rotary joint 51, and the sun gear assembly 6 includes a sun gear sleeve 61, a rotary disk 62, a hollow slider 63, a transition connector 64 and a polishing disk 65.

The working process of the embodiment:

EXAMPLE five

As shown in fig. 1 and 8, the present embodiment provides single-transmission planetary polishing apparatuses, which include a mounting base 1, a driving motor 2, a driving shaft 3 and a sun gear assembly 6, wherein the driving shaft 3 is a hollow stepped shaft, and a th exhaust hole 31 is formed in a side wall of the driving shaft 3, and the sun gear assembly 6 includes a sun gear sleeve 61, a turntable 62, a hollow slider 63, a transition connector 64 and a polishing disk 65.

The top of the mounting seat 1 is provided with a third mounting hole for mounting the driving motor 2, the lower part of the mounting seat 1 is provided with a th mounting hole for mounting the driving shaft 3, a cavity is arranged in the mounting seat 1, and an exhaust assembly is arranged in the cavity, as shown in fig. 9, the exhaust assembly 7 comprises an annular revolving body 71 and an annular sleeve body 72 which are coaxially and sequentially arranged outside the driving shaft 3, and a bearing arranged between the annular revolving body and the annular sleeve body, wherein the annular revolving body 71 is in interference fit with the driving shaft 3, an annular groove 711 communicated with a th exhaust hole 31 is arranged on the annular revolving body 71, an air nozzle joint 74 communicated with the annular groove 711 is arranged outside the annular sleeve body 72, and an air hole 75 communicated with the cavity of the;

the sun wheel sleeve 61 is a hollow connecting sleeve with an opening at the upper part and the lower part, the end of the hollow connecting sleeve is fixedly arranged at the lower part of the mounting base 1, the end of the hollow connecting sleeve is positioned outside the mounting base 1, the transition connecting piece 64 is a cylinder, the lower rotary joint 642 is arranged at the air inlet at the upper end of the cylinder, and the lower rotary joint 642 is communicated with the lower end of the hollow driving shaft 3 through a pipeline.

The end of driving shaft 3 passes through the shaft coupling with the output shaft of driving motor 2 and is connected, driving shaft 3 passes through the bearing and sets up in the mount pad, another end of driving shaft 3 passes mount pad 1, behind the opening part of sun gear cover 61 end, stretch into the sun gear cover 61 cavity, and plug-in connection is continuous with the carousel 62 that sets up in sun gear cover 61 at square through-hole 621, make driving shaft 3 can drive the carousel 62 that sets up in the sun gear cover 61 cavity rotatory, also can be with the tip of driving shaft 3 and other modes fixed connection such as through-hole 621 interference fit or welding, compare in the mode of linking firmly, the grafting is more convenient for the dismantlement of carousel 62 to be changed.

A turntable bearing 611 is arranged on the inner wall of the cavity of the sun wheel sleeve 61, the inner ring of the turntable bearing 611 is sleeved on the outer surface of the turntable 62, and rings of flanges for axially positioning the turntable 62 are arranged at the upper end of the outer circumference of the turntable 62.

The inner wall of the end head of the other end of the sun wheel sleeve 61 is fixedly provided with a sun wheel 613 with internal teeth, a pressing ring 612 for pressing the turntable bearing 611 is arranged between the turntable bearing 611 and the sun wheel 613, and the outer wall of the pressing ring 612 is tightly attached to the inner wall of the sun wheel sleeve 61.

The working process of the embodiment:

The driving shaft 3 drives the turntable 62 to rotate, and the turntable 62 enables the transition connecting piece 64 to revolve around the driving shaft 3 through the hollow slide block 63; the transition piece 64 drives the polishing disk 65 to revolve around the driving shaft 3 through the planet wheel 641 meshed with the sun wheel 613 in the sun wheel sleeve 61; the polishing disk 65 rotates around its central axis while revolving.

The polishing pressure of the polishing disk 65 can be controlled by supplying compressed air to the cylinder through the air hole 75 on the mounting seat, the air nozzle joint 74 in the cavity of the mounting seat, the annular groove 711, the th air exhaust hole 31, the central hole of the driving shaft 3 and the lower rotary joint 642.

The above description is only for the preferred embodiment of the present invention, and the technical solution of the present invention is not limited thereto, and any known modifications made by those skilled in the art on the basis of the main technical idea of the present invention belong to the technical scope to be protected by the present invention.

Claims

The single-transmission planetary polishing device is characterized by comprising an installation seat (1), and a driving motor (2), a driving shaft (3), a driven shaft (5) and a sun gear assembly (6) which are arranged on the installation seat (1), wherein an output shaft of the driving motor (2) is connected with the driving shaft (3), and the driving shaft (3) is connected with the driven shaft (5) through a transmission mechanism (4);

the sun wheel assembly (6) comprises a sun wheel sleeve (61), a rotary disc (62), a hollow slide block (63), a transition connecting piece (64) and a polishing disc (65); the sun wheel sleeve (61) is a convex connecting sleeve with an opening at the upper part and the lower part, the small end of the sun wheel sleeve is fixedly arranged at the lower part of the mounting seat (1), and the large end of the sun wheel sleeve is positioned outside the mounting seat (1);

a through hole (621) is arranged at the axis of the rotary table (62), and a T-shaped groove (622) transversely penetrating through the rotary table (62) is arranged at the lower part of the rotary table (62);

the upper end of the hollow sliding block (63) is provided with a clamping groove matched with the T-shaped groove (622), and the upper end of the hollow sliding block is clamped in the T-shaped groove (622) and can move along the T-shaped groove (622);

the driven shaft (5) is arranged on the sun wheel sleeve (61) in a penetrating way, and the end of the driven shaft extends into the big end through the small end of the sun wheel sleeve (61) and is connected with the turntable (62) arranged in the big end of the sun wheel sleeve (61) through the through hole (621);

a sun gear (613) with internal teeth is fixedly arranged on the inner wall of the end head of the large end of the sun gear sleeve (61);

the upper part of the transition connecting piece (64) is rotatably arranged in the hollow sliding block (63), and the polishing disk (65) is connected with the transition connecting piece (64); the lower part of the transition connecting piece (64) extends out of a hollow slide block (63), and the outer circumference of the transition connecting piece is fixedly sleeved with a planet wheel (641) meshed with the sun wheel (613).
2. The single-transmission planetary polishing device as claimed in claim 1, wherein the through hole (621) has a polygonal cross-section, the end of the driven shaft (5) connected to the turntable (62) has a shape matching the shape of the through hole (621);

a turntable bearing (611) is arranged on the inner wall of the large end of the sun wheel sleeve (61), and the inner ring of the turntable bearing (611) is sleeved on the outer surface of the turntable (62);

a pressing ring (612) used for pressing the turntable bearing (611) is further arranged between the turntable bearing (611) and the sun wheel (613), and the outer wall of the pressing ring (612) is tightly attached to the inner wall of the large end of the sun wheel sleeve (61).
3. The single-drive planetary polishing device according to claim 2, wherein the transition piece (64) is hinged to the polishing disk (65).
4. kind of single-drive planetary polishing device as claimed in claim 1, 2 or 3, wherein the driven shaft (5) is a hollow stepped shaft, and an upper rotary joint (51) is mounted on the upper end thereof;

the transition connecting piece (64) is a cylinder, a lower rotary joint (642) is installed at an air inlet at the upper end of the cylinder, and the lower rotary joint (642) is communicated with the lower end of a hollow driven shaft (5) through a pipeline.
5. The single-drive planetary polishing device as set forth in claim 4, wherein the turntable (62) is provided at its upper end with rings of flanges for axial positioning of the turntable (62);

the transmission mechanism (4) is a gear transmission mechanism or a belt transmission mechanism or a chain transmission mechanism.
6. kind of single-drive planetary polishing device according to claim 5, wherein the belt drive mechanism (4) includes a small driving pulley (41) provided on the driving shaft (3), a large driven pulley (43) provided on the driven shaft (5), and a toothed belt (42) connecting the driving pulley and the driven pulley.
7. The single-transmission planetary polishing device of claim 6, wherein the driving shaft (3) and the driven shaft (5) are parallel to each other and spaced apart from each other, the mounting base (1) comprises a base (11) and a supporting shell (12) fixedly arranged on the upper surface of the base (11), the base (11) is provided with a mounting hole for mounting the driving shaft (3) and a second mounting hole for mounting the sun gear sleeve (61), and the top of the supporting shell (12) is provided with a third mounting hole for mounting the driving motor (2).
8. kind of single-drive planetary polishing device according to claim 7, characterized in that the upper part of the transition piece (64) is installed in the hollow slider (63) by a rolling bearing or a sliding bearing.
9, single-transmission planetary polishing device, which is characterized by comprising an installation seat (1), a driving motor (2), a driving shaft (3) and a sun gear assembly (6), wherein the driving motor, the driving shaft (3) and the sun gear assembly are arranged on the installation seat (1);

the sun wheel assembly (6) comprises a sun wheel sleeve (61), a rotary table (62), a hollow slide block (63), a transition connecting piece (64) and a polishing disc (65), wherein the sun wheel sleeve (61) is a hollow connecting sleeve with an opening at the upper part and the lower part, ends of the hollow connecting sleeve are fixedly arranged at the lower part of the mounting seat (1), and the end is positioned outside the mounting seat (1);

a through hole (621) is arranged at the axis of the rotary table (62), and a T-shaped groove (622) transversely penetrating through the rotary table (62) is arranged at the lower part of the rotary table (62);

the upper end of the hollow sliding block (63) is provided with a clamping groove matched with the T-shaped groove (622), and the upper end of the hollow sliding block is clamped in the T-shaped groove (622) and can move along the T-shaped groove (622);

the end of the driving shaft (3) is connected with the output shaft of the driving motor (2), and the other end of the driving shaft penetrates through the opening at the ends of the mounting base (1) and the sun wheel sleeve (61) , extends into the cavity of the sun wheel sleeve (61), and is connected with the turntable (62) arranged in the sun wheel sleeve (61) through the through hole (621);

a sun gear (613) with internal teeth is fixedly arranged on the inner wall of the end head of the other end of the sun gear sleeve (61);

the upper part of the transition connecting piece (64) is rotatably arranged in the hollow sliding block (63), and the polishing disk (65) is connected with the transition connecting piece (64); the lower part of the transition connecting piece (64) extends out of a hollow slide block (63), and the outer circumference of the transition connecting piece is fixedly sleeved with a planet wheel (641) meshed with the sun wheel (613).
10. The single-transmission planetary polishing device of claim 9, wherein the mounting base (1) has a cavity therein, the driving shaft (3) is a hollow stepped shaft, and the sidewall thereof has a th exhaust hole (31);

the exhaust assembly (7) comprises an annular revolving body (71) and an annular sleeve body (72) which are coaxially and sequentially arranged on the outer side of the driving shaft (3), and a bearing arranged between the annular revolving body and the annular sleeve body;

the annular revolving body (71) is in interference fit with the driving shaft (3), an annular groove (711) communicated with the th exhaust hole (31) is formed in the annular revolving body (71), an air nozzle joint (74) communicated with the annular groove (711) is arranged on the outer side of the annular sleeve body (72),

the mounting seat (1) is provided with an air hole (75) communicated with the mounting seat cavity;

the transition connecting piece (64) is a cylinder, a rotary joint (642) is arranged at an air inlet at the upper end of the cylinder, and the rotary joint (642) is communicated with the lower end of the hollow driving shaft (3) through a pipeline; a turntable bearing (611) is arranged in the cavity of the sun wheel sleeve (61), and the inner ring of the turntable bearing (611) is sleeved on the outer surface of the turntable (62);

a pressing ring (612) used for pressing the turntable bearing (611) is further arranged between the turntable bearing (611) and the sun wheel (613), and the outer wall of the pressing ring (612) is tightly attached to the inner wall of the sun wheel sleeve (61);

the transition piece (64) is hinged with the polishing disk (65).