CN115070589A

CN115070589A - Rare earth metal alloy panel top layer burnishing device

Info

Publication number: CN115070589A
Application number: CN202210621991.XA
Authority: CN
Inventors: 郑应增
Original assignee: Jiangsu Lianqi Material Technology Co ltd
Current assignee: Jiangsu Lianqi Material Technology Co ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-09-20

Abstract

The invention discloses a rare earth metal alloy plate surface polishing device, belonging to the technical field of polishing devices, wherein the prior polishing device has the problems of time and labor consumption for replacing polishing pieces with different grades, and no adjustment of polishing inclination angles according to different plate inclined planes, a plurality of groups of telescopic polishing pieces with different polishing grades are symmetrically arranged on a rotary drum, a fixed rotary shaft is arranged at the inner side of the rotary drum, telescopic driving parts which can be extended and retracted simultaneously and oppositely are radially arranged on the fixed rotary shaft in a penetrating way, the telescopic driving parts control the extension of the telescopic polishing pieces with different polishing grades, the selection can be realized according to different polishing requirements, the quick switching of the telescopic polishing pieces with different polishing grades can be realized without replacing the polishing pieces, a large amount of time and labor consumption for replacing and disassembling are saved, the operation efficiency is greatly improved, the rotary drum and a U-shaped frame can be adjusted in height and inclination angles by a main lifting electric rod and a side electric telescopic rod, the polishing and polishing inclination angle control function is realized.

Description

Rare earth metal alloy panel top layer burnishing device

Technical Field

The invention relates to the technical field of polishing devices, in particular to a polishing device for a surface layer of a rare earth metal alloy plate.

Background

After the plate is formed, burrs or particles exist on the surface of the plate, so that the surface of the plate is uneven, and the use requirements of people cannot be met. Therefore, some polishing equipment is required to polish the surface of the plate, so as to remove burrs or particles on the surface of the plate, so that the surface of the plate is smooth and flat.

For increasing the polishing efficiency of cuing open, the mode that has generally adopted mechanized polishing at present stage carries out panel surface and cuing open the light, through preventing the installation roller on the conveyer belt, the winding installation is polished and is cuing open the light piece on the roller, cuts open the light through drive arrangement control roller rotation panel on to the conveyer belt.

The structural polishing is found to have the following problems to be solved in the using process: 1. when the polishing operation is required to be performed according to the plates with different polishing requirements or the polishing operation of polishing grades is required to be gradually improved, polishing parts with different polishing grades are required to be replaced and sleeved in advance, and time and labor are consumed; 2. it is not satisfactory to perform uniform polishing operation on some plates having inclined surfaces.

Based on the problems, the invention provides a polishing device for the surface layer of a rare earth metal alloy plate.

Disclosure of Invention

In view of the problems in the prior art background, the invention aims to provide a polishing device for the surface layer of a rare earth metal alloy plate, which can automatically control and select polishing and polishing pieces with different polishing grades to perform polishing operation according to the use requirements without replacing the polishing and polishing pieces; on the other hand realizes can adjusting in a flexible way polishing and cuts open the function of polishing piece rotation height and gradient, has solved that the current polishing device that proposes has the problem that does not possess the inclination of polishing according to the adjustment of different plate inclined planes simultaneously when changing the consuming time and the power of the piece of polishing of different grades in the background art.

In order to realize the purpose and solve the problem that the wide-angle camera cannot automatically adjust the field of view amplification in the using process, the invention adopts the technical scheme that:

a rare earth metal alloy plate surface polishing device comprises a U-shaped frame and a rotary drum, wherein the U-shaped frame is arranged above a conveying lathe, the rotary drum is arranged on the U-shaped frame, the middle part above the U-shaped frame is arranged below an installation plate through a main lifting electric rod, side electric telescopic rods for adjusting inclination angles are symmetrically arranged on two sides of the U-shaped frame, and the movable end of the main lifting electric rod is hinged with the two ends of each side electric telescopic rod;

a plurality of groups of telescopic polishing parts which can extend out or retract in different polishing grades are installed on the rotary drum in a mirror symmetry mode, a fixed rotating shaft is installed on the inner side of the rotary drum, telescopic driving parts which can extend and retract in opposite directions at the same time are installed on the fixed rotating shaft in a radial penetrating mode, and the telescopic driving parts control the extension of the telescopic polishing parts in different polishing grades;

and a first driving part for driving the rotary drum to rotate is arranged at one end of the U-shaped frame, and a second driving part for driving the fixed rotary shaft to rotate is arranged at the other end of the rotary drum.

Furthermore, mirror symmetry sets up the flexible groove that the section of thick bamboo wall is run through to the multiunit on the rotary drum, flexible groove is fan-shaped open slot including inboard first flexible groove, the flexible groove of second and the cross-section that communicates in proper order outward, simultaneously the width in first flexible groove is greater than the flexible groove of second, first flexible groove the flexible groove of second with install on the open slot flexible polishing spare.

Still further, flexible polishing spare includes that medial extremity sets up the first slider of inner concave surface, second slider, cross-section and is sectorial clamp splice, the piece of polishing and a plurality of spring, the one end of first slider is connected the second slider, the other end of second slider is connected the clamp splice, the clamp splice outside is installed through setting up the recess the piece of polishing, first slider is installed first flexible inslot the second slider is installed first flexible groove with on the flexible groove of second, the clamp splice is installed on the open slot, first slider top both sides with evenly install a plurality ofly between first flexible groove top the spring.

Furthermore, an inner concave surface arranged at the inner side end of the first sliding block is the same as the inner diameter of the rotary drum, and an arc-shaped clamping groove convenient for the telescopic driving part to extend out and be clamped is formed in the inner concave surface.

Further, radially run through the setting on the fixed rotating shaft and run through the groove, fixed rotating shaft one end sets up the parallel run through the direction mark in groove, run through the inslot and install flexible drive division, flexible drive division includes flexible piece of two L types, drive gear and servo motor, two the crisscross cartridge of the flexible piece of L type is in run through on the groove, be provided with the straight-tooth simultaneously on crisscross opposite face, two install the meshing between the straight-tooth drive gear, drive gear's one end is run through the connecting axle and is installed fixed rotating shaft's one end and connection are in on servo motor's the output, servo motor installs through the second base that is the U type fixed rotating shaft's one end.

Furthermore, the outer side end of the L-shaped telescopic block is provided with an arc-shaped bulge which is inserted into the arc-shaped clamping groove when extending out.

Furthermore, the second driving part comprises a U-shaped rotating connecting frame and a second motor, the rotating connecting frame is installed on the fixed rotating shaft on the outer side of the second base, the middle of the outer side of the rotating connecting frame is connected with the output end of the second motor, one end of the rotating drum is axially connected with a plurality of supporting legs, the outer side ends of the supporting legs are connected with a third base, and the second motor is installed on the third base.

Furthermore, two ends of the U-shaped frame are symmetrically provided with rotating shaft grooves, one end of the rotating drum is clamped on the rotating shaft groove on one side through a connecting rotating shaft, the other end of the rotating drum is clamped on the rotating shaft groove on the other side through a connecting shaft barrel, and meanwhile, the first driving part is connected with the outer side end of the rotating shaft.

Furthermore, the outer side end of the spindle sleeve is provided with an anti-drop ring, the first driving part is a first motor, and the first motor is arranged at the outer side of one end of the U-shaped frame through a first base which is in a U shape.

Furthermore, a strip-shaped air box is installed on one side of the U-shaped frame, a strip-shaped air opening is formed in the position, facing the bottom of the rotary drum, below the air box, an air pipe joint is arranged at the top of the air box, and the air pipe joint is connected with a filtering and dust removing system on the outer side.

Compared with the prior art, the invention has the following advantages:

(1) according to the invention, a plurality of groups of telescopic polishing parts which can extend out or retract in different polishing grades are installed on the rotary drum in a mirror symmetry manner, a fixed rotating shaft is installed on the inner side of the rotary drum, telescopic driving parts which can extend and retract in opposite directions are radially installed on the fixed rotating shaft in a penetrating manner, and the telescopic driving parts control the extension of the telescopic polishing parts in different polishing grades, so that on one hand, the telescopic polishing parts are symmetrically installed on the rotary drum, and the function of stable polishing can be met when the rotary drum rotates at a high speed; on the other hand rotates through the fixed pivot of control and selects the flexible polishing member of corresponding grade, then the flexible drive division of control stretches out ejecting corresponding flexible polishing member, realizes selecting according to different polishing requirements, need not to change and polishes the flexible polishing member that polishing member can realize the different polishing grades of cutting open, has saved the plenty of time and the manpower that change the dismouting and has consumeed, has improved the operating efficiency greatly.

(2) According to the invention, the middle part above the U-shaped frame is arranged below the mounting plate through the main lifting electric rod, meanwhile, the side electric telescopic rods for adjusting the inclination angle are symmetrically arranged on two sides, the movable ends of the main lifting electric rods are hinged with the two ends of the side electric telescopic rods, the height of the rotary drum is controlled by controlling the extension of the main lifting electric rods, the inclination angle of the U-shaped frame is adjusted by controlling the extension of the side electric telescopic rods on two sides, and finally, the polishing and polishing inclination angles of the rotary drum and the telescopic polishing part arranged on the rotary drum are controlled.

(3) According to the invention, the strip-shaped air box is arranged on one side of the U-shaped frame, the strip-shaped air opening is formed in the position, facing the bottom of the rotary drum, below the air box, the air pipe joint is arranged at the top of the air box and is connected with the filtering and dust removing system on the outer side, and when the air is cut open in a rotating mode, the air is extracted by controlling the filtering and dust removing system, so that the scraps thrown out by the rotary cut open are sucked into the air box through the strip-shaped air opening, and the condition of operation environment pollution caused by the scraps flying into an operation space is avoided.

Drawings

FIG. 1 is a first perspective view provided in accordance with an embodiment of the present invention;

FIG. 2 is a second perspective view provided in accordance with an embodiment of the present invention;

FIG. 3 is a third perspective view provided by an embodiment of the present invention;

FIG. 4 is a perspective view of the drum separated from the U-shaped frame according to the embodiment of the present invention;

FIG. 5 is a perspective view of one end of the drum with the shaft removed according to an embodiment of the present invention;

FIG. 6 is a partial perspective view of a first end of the drum with the shaft removed according to an embodiment of the present invention;

FIG. 7 is a partial perspective view of a second end of the rotating drum with the shaft removed according to an embodiment of the present invention;

FIG. 8 is a cutaway perspective view of a bowl provided by an embodiment of the present invention;

FIG. 9 is a front view of a telescopic polishing member extending from a drum according to an embodiment of the present invention;

FIG. 10 is a front view of a section of the drum with the telescoping section removed according to an embodiment of the present invention;

FIG. 11 is a perspective view of a telescoping polishing section provided in accordance with an embodiment of the present invention;

fig. 12 is a partially cut-away perspective view of a fixed rotating shaft according to an embodiment of the present invention.

In the figure: 1. mounting a plate; 2. a side electric telescopic rod; 3. a main lifting electric rod; 4. a U-shaped frame; 5. a rotating shaft groove; 6. a first base; 7. a first motor; 8. an air box; 9. an air pipe joint; 10. a strip tuyere; 11. a rotating drum; 12. a rotating shaft; 13. a shaft cylinder; 14. the anti-drop ring; 15. a first telescopic slot; 16. a second telescopic slot; 17. an open slot; 18. a telescopic polishing part; 181. a first slider; 182. an arc-shaped clamping groove; 183. a second slider; 184. a clamping block; 185. polishing the workpiece; 186. a spring; 19. fixing the rotating shaft; 191. a beacon; 20. a through groove; 21. an L-shaped telescopic block; 211. an arc-shaped bulge; 212. straight teeth; 22. a drive gear; 23. a servo motor; 24. a second base; 25. the connecting frame is rotated; 26. a support leg; 27. a third base; 28. a second motor.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

Example one

Referring to fig. 1-11, a surface polishing device for a rare earth metal alloy plate comprises a U-shaped frame 4 mounted above a conveying lathe, a rotary drum 11 on the U-shaped frame 4, a main lifting electric rod 3 mounted in the middle of the upper part of the U-shaped frame 4 below a mounting plate 1, the mounting plate 1 mounted above the conveying lathe, side electric telescopic rods 2 symmetrically mounted on both sides for adjusting inclination angles, the movable end of the main lifting electric rod 3 is hinged to both ends of the side electric telescopic rods 2, the rotary height of the U-shaped frame 4 and the rotary drum 11 mounted thereon is controlled by controlling the extension and retraction of the main lifting electric rod 3, the inclination angle of the U-shaped frame 4 and the rotary drum 11 mounted thereon is controlled by controlling the extension and retraction of the two side electric telescopic rods 2, the adjustment of the side electric telescopic rods 2 mounted on both sides is more precise and stable, a plurality of groups of extensible or retractable polishing members 18 with different polishing grades are symmetrically mounted on the rotary drum 11, a fixed rotating shaft 19 is arranged on the inner side of the rotating drum 11, telescopic driving parts which can be extended and retracted in opposite directions are radially arranged on the fixed rotating shaft 19 in a penetrating mode, and the telescopic driving parts control the extension of the telescopic polishing parts 18 with different polishing grades; a first driving part for driving the rotary drum 11 to rotate is installed at one end of the U-shaped frame 4, a second driving part for driving the fixed rotary shaft 19 to rotate is installed at the other end of the rotary drum 11, the purpose of controlling the rotary drum 11 to rotate is achieved by controlling the first driving part, the fixed rotary shaft 19 is driven to rotate by controlling the second driving part, and the purpose of controlling the telescopic polishing part 18 with a designated polishing grade to control the telescopic driving part to eject is achieved.

In the embodiment, compared with the conventional roller which is provided with the polishing member 185 at the outer side for rotary polishing, the design concept often needs to replace and sleeve polishing members with different polishing levels in advance when the polishing operation is required for plates with different polishing requirements or the polishing operation is required to be carried out by increasing the polishing levels step by step, which consumes time and labor; according to the invention, the plurality of telescopic polishing parts 18 with different grades are symmetrically arranged on the rotary drum 11, the telescopic polishing parts 18 can be stretched on the wall of the rotary drum 11, then the fixed rotary shaft 19 is arranged on the inner side of the rotary drum 11, the telescopic driving parts which can be simultaneously stretched and contracted in opposite directions are radially arranged on the fixed rotary shaft 19 in a penetrating manner, the telescopic driving parts are aligned to the telescopic polishing parts 18 by rotating the fixed rotary shaft 19, then the telescopic driving parts are controlled to push out the telescopic polishing parts 18 to extend out, and finally the purpose of automatically selecting the telescopic polishing parts 18 which are suitable for the grades according to the use requirements is realized, the time and labor for replacing polishing parts are saved, and the flexibility in use is increased.

Referring to fig. 7, 8, and 9, a plurality of groups of telescopic slots penetrating through the drum wall are symmetrically disposed on the drum 11, so as to facilitate the control of the extension of the telescopic polishing members 18 of different grades, the telescopic slots include a first telescopic slot 15 whose inner side is sequentially communicated with the outer side, a second telescopic slot 16 and an open slot 17 whose cross section is in a fan shape, meanwhile, the width of the first telescopic slot 15 is greater than that of the second telescopic slot 16, the telescopic polishing members 18 are installed on the first telescopic slot 15, the second telescopic slot 16 and the open slot 17, and by setting the first telescopic slot 15, the second telescopic slot 16 and the open slot 17, the width of the first telescopic slot 15 is greater than that of the second telescopic slot 16, so as to facilitate the automatic elastic retraction and reset of the installed telescopic polishing members 18, and when the telescopic polishing members 18 are not used, the automatic retraction does not affect the extension and polishing of other telescopic polishing members 18.

Referring to fig. 6, the telescopic polishing member 18 includes a first slider 181, a second slider 183, a clamping block 184 having a fan-shaped cross section, a polishing member 185 and a plurality of springs 186, wherein an inner concave surface is disposed at an inner end of the first slider 181, one end of the first slider 181 is connected to the second slider 183, the other end of the second slider 183 is connected to the clamping block 184, the polishing member 185 is mounted on the outer side of the clamping block 184 by disposing a groove, the first slider 181 is mounted in the first telescopic slot 15, the second slider 183 is mounted on the first telescopic slot 15 and the second telescopic slot 16, the clamping block 184 is mounted on the open slot 17, the plurality of springs 186 are uniformly mounted between two sides of the top of the first slider 181 and the top of the first telescopic slot 15, the first slider 181, the second slider 183 and the clamping block 184 are pushed to reset by the springs 186 in an unsupported extended state to drive the clamping block 184 to retract into the open slot 17, and when the specified telescopic polishing member 18 is required to be controlled to extend, the first slider 181 is moved outward, the first slider 181 pushes the second slider 183 to move outwards, and the second slider 183 pushes the clamping block 184 to move outwards, so that the purpose of pushing the polishing piece 185 mounted on the clamping block 184 through the clamping block 184 is achieved, and the polishing piece 185 cuts the surface of the plate when the rotary drum 11 rotates.

Referring to fig. 8, 9 and 12, an inner concave surface formed at the inner side end of the first slider 181 is the same as the inner diameter of the rotary drum 11, so as to reduce the resistance of the fixed rotary shaft 19 in the non-support extending state during rotation, and an arc-shaped slot 182 is formed in the inner concave surface, so that the telescopic driving portion can extend and be clamped into the slot, thereby increasing the stability of the support in extending.

Referring to fig. 12, a through groove 20 is radially disposed on a fixed rotating shaft 19 in a penetrating manner, a pointer 191 parallel to the through groove 20 is disposed at one end of the fixed rotating shaft 19, the pointer 191 is disposed to facilitate an operator to further confirm the polishing grade of the ejection telescopic polishing member 18, a telescopic driving portion is disposed in the through groove 20, the telescopic driving portion includes two L-shaped telescopic blocks 21, a driving gear 22 and a servo motor 23, the two L-shaped telescopic blocks 21 are alternatively inserted into the through groove 20, meanwhile, straight teeth 212 are disposed on the opposite sides of the alternative positions, a meshed driving gear 22 is disposed between the two straight teeth 212, one end of the driving gear 22 is disposed at one end of the fixed rotating shaft 19 in a penetrating manner through a connecting shaft and connected to an output end of the servo motor 23, the servo motor 23 is disposed at one end of the fixed rotating shaft 19 through a U-shaped second base 24, the driving gear 22 is driven to rotate by the servo motor 23, the two groups of straight teeth 212 on the two L-shaped telescopic blocks 21 are driven to move oppositely or reversely in the rotating process of the driving gear 22, the straight teeth 212 drive the outer side ends of the L-shaped telescopic blocks 21 to extend out of the through grooves 20, and the purpose of stably controlling the telescopic motion is achieved through the structure.

Referring to fig. 8, 9 and 12, the outer end of the L-shaped telescopic block 21 is provided with an arc protrusion 211 which is inserted into the arc slot 182 when extending out, and the arc protrusion 211 is conveniently and stably inserted into the arc slot 182, so as to achieve the purpose of stably pushing out the telescopic polishing member 18.

Referring to fig. 6 and 7, the second driving portion includes a U-shaped rotating connecting frame 25 and a second motor 28, the rotating connecting frame 25 is installed on the fixed rotating shaft 19 outside the second base 24, the middle portion outside the rotating connecting frame 25 is connected to the output end of the second motor 28, one end of the rotating drum 11 is axially connected to a plurality of supporting legs 26, the outer ends of the supporting legs 26 are connected to a third base 27, the second motor 28 is installed on the third base 27, the U-shaped rotating connecting frame 25 is driven to rotate by the second motor 28, the rotating connecting frame 25 drives the fixed rotating shaft 19 inside to rotate, and the telescopic driving portion is installed on the fixed rotating shaft 19, so that the purpose of controlling the telescopic driving portion to eject out a plurality of groups of telescopic polishing members 18 with different polishing grades installed on the rotating drum 11 is achieved.

Referring to fig. 3, two ends of the U-shaped frame 4 are symmetrically provided with rotating shaft grooves 5, the sizes of the rotating shaft grooves 5 are designed according to the use requirements, one end of the rotating drum 11 is clamped on the rotating shaft groove 5 on one side through a connecting rotating shaft 12, the other end of the rotating drum 11 is clamped on the rotating shaft groove 5 on the other side through a connecting shaft barrel 13, meanwhile, a first driving part is connected with the outer side end of the rotating shaft 12, the rotating shaft 12 and the rotating drum 11 are driven to rotate through the first driving part, and the rotation kinetic energy is provided for polishing.

Referring to fig. 3 and 4, the anti-drop ring 14 is installed at the outer side end of the shaft connecting cylinder 13, the stability of the rotation of the rotary drum 11 is improved by the anti-drop ring 14, the first driving portion is the first motor 7, the first motor 7 is installed at the outer side of one end of the U-shaped frame 4 through the U-shaped first base 6, the first motor 7 is controlled to drive the rotary shaft 12 to rotate, the rotary shaft 12 drives the rotary drum 11 to rotate, and finally the effect of driving the stable rotation by the integrated arrangement is achieved.

Please refer to fig. 2 and 3, a strip-shaped air box 8 is installed on one side of the U-shaped frame 4, a strip-shaped air opening 10 is arranged below the air box 8 and towards the bottom of the rotary drum 11, an air pipe joint 9 is arranged at the top of the air box 8, the air pipe joint 9 is connected with a dust filtering and removing system on the outer side, the air box 8 is installed according to the characteristic of the fragment track formed by polishing and throwing the telescopic polishing part 18 when the rotary drum 11 rotates, the strip-shaped air opening 10 is arranged for alignment and drainage, the efficiency of fragment collection is greatly increased, and the pollution of the fragments to the operation environment is reduced.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a rare earth metal alloy plate surface layer burnishing device, is including installing U type frame (4) in transport lathe top, rotary drum (11) on U type frame (4), its characterized in that: the middle part above the U-shaped frame (4) is arranged below the mounting plate (1) through a main lifting electric rod (3), meanwhile, side electric telescopic rods (2) for adjusting inclination angles are symmetrically arranged on two sides of the U-shaped frame, and the movable end of the main lifting electric rod (3) is hinged with two ends of each side electric telescopic rod (2);

a plurality of groups of telescopic polishing parts (18) which can extend out or retract in different polishing grades are symmetrically arranged on the rotary drum (11), a fixed rotating shaft (19) is arranged on the inner side of the rotary drum (11), telescopic driving parts which can extend and retract in opposite directions at the same time are radially arranged on the fixed rotating shaft (19) in a penetrating manner, and the telescopic driving parts control the extension of the telescopic polishing parts (18) in different polishing grades;

one end of the U-shaped frame (4) is provided with a first driving part for driving the rotary drum (11) to rotate, and the other end of the rotary drum (11) is provided with a second driving part for driving the fixed rotary shaft (19) to rotate.

2. The rare earth metal alloy plate surface polishing device as claimed in claim 1, wherein a plurality of groups of telescopic grooves penetrating through the wall of the drum (11) are symmetrically arranged on the drum in a mirror image manner, the telescopic grooves include a first telescopic groove (15), a second telescopic groove (16) and an open groove (17) with a fan-shaped cross section, the inner side and the outer side of the first telescopic groove are sequentially communicated, meanwhile, the width of the first telescopic groove (15) is larger than that of the second telescopic groove (16), and the telescopic polishing part (18) is installed on the first telescopic groove (15), the second telescopic groove (16) and the open groove (17).

3. The rare earth metal alloy plate surface polishing device as claimed in claim 2, wherein the telescopic polishing member (18) comprises a first slider (181) having an inner concave surface at an inner end, a second slider (183), a clamping block (184) having a fan-shaped cross section, a polishing member (185) and a plurality of springs (186), one end of the first slider (181) is connected with the second slider (183), the other end of the second slider (183) is connected with the clamping block (184), the polishing member (185) is mounted on the outer side of the clamping block (184) by providing a groove, the first slider (181) is mounted in the first telescopic groove (15), the second slider (183) is mounted on the first telescopic groove (15) and the second telescopic groove (16), the clamping block (184) is mounted on the open groove (17), and a plurality of springs are uniformly mounted between two sides of the top of the first slider (181) and the top of the first telescopic groove (15) (186).

4. The rare earth metal alloy plate surface polishing device as claimed in claim 3, wherein an inner concave surface is formed at an inner end of the first slider (181), the inner concave surface has the same inner diameter as that of the drum (11), and an arc-shaped clamping groove (182) is formed in the inner concave surface, so that the telescopic driving portion can extend out and be clamped in.

5. The rare earth metal alloy plate surface polishing device as claimed in claim 4, wherein a through groove (20) is radially arranged on the fixed rotating shaft (19) in a penetrating manner, a pointer (191) parallel to the through groove (20) is arranged at one end of the fixed rotating shaft (19), the telescopic driving part is installed in the through groove (20) and comprises two L-shaped telescopic blocks (21), a driving gear (22) and a servo motor (23), the two L-shaped telescopic blocks (21) are inserted in the through groove (20) in a staggered manner, straight teeth (212) are arranged on opposite surfaces in a staggered manner, the driving gear (22) is engaged between the two straight teeth (212), one end of the driving gear (22) is installed at one end of the fixed rotating shaft (19) in a penetrating manner through a connecting shaft and is connected to an output end of the servo motor (23), the servo motor (23) is installed at one end of the fixed rotating shaft (19) through a U-shaped second base (24).

6. The rare earth metal alloy plate surface polishing device as claimed in claim 5, wherein an arc protrusion (211) inserted into the arc slot (182) when the outer end of the L-shaped telescopic block (21) extends out is arranged at the outer end of the L-shaped telescopic block.

7. The rare earth metal alloy plate surface polishing device as set forth in claim 5, wherein the second driving portion comprises a U-shaped rotating connecting frame (25) and a second motor (28), the rotating connecting frame (25) is mounted on the fixed rotating shaft (19) outside the second base (24), the outer middle portion of the rotating connecting frame (25) is connected with the output end of the second motor (28), one end of the rotating drum (11) is axially connected with a plurality of legs (26), the outer ends of the plurality of legs (26) are connected with a third base (27), and the second motor (28) is mounted on the third base (27).

8. The rare earth metal alloy plate surface polishing device as claimed in claim 1, wherein rotation shaft grooves (5) are symmetrically formed at both ends of the U-shaped frame (4), one end of the rotary drum (11) is clamped on the rotation shaft groove (5) at one side through a connecting rotation shaft (12), the other end of the rotary drum (11) is clamped on the rotation shaft groove (5) at the other side through a connecting shaft cylinder (13), and the first driving part is connected with the outer end of the rotation shaft (12).

9. The rare earth metal alloy plate surface polishing device is characterized in that a drop-proof ring (14) is mounted at the outer side end of the shaft connecting cylinder (13), the first driving part is a first motor (7), and the first motor (7) is mounted on the outer side of one end of the U-shaped frame (4) through a first base (6) in a U shape.

10. The rare earth metal alloy plate surface polishing device as claimed in claim 9, wherein a strip-shaped air box (8) is mounted on one side of the U-shaped frame (4), a strip-shaped air port (10) is arranged below the air box (8) and faces the bottom of the rotary drum (11), an air pipe joint (9) is arranged at the top of the air box (8), and the air pipe joint (9) is connected with an outer filtering and dust removing system.