CN216327173U

CN216327173U - A polisher for metal work piece edge is polished

Info

Publication number: CN216327173U
Application number: CN202122778642.2U
Authority: CN
Inventors: 洪运亮
Original assignee: Dalian Naisi Machinery Manufacturing Co ltd
Current assignee: Dalian Naisi Machinery Manufacturing Co ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-04-19
Anticipated expiration: 2031-11-12

Abstract

The utility model relates to the technical field of polishing devices, in particular to a polishing machine for polishing the edge of a metal workpiece, which can automatically polish the periphery of the edge of the workpiece, reduce manual operation and conversion of a working surface of the workpiece and improve the working efficiency and polishing effect of the device; the polishing device comprises a bottom plate, two groups of polishing assemblies, a rotating support assembly, a linkage assembly and an adjusting assembly, wherein a sliding groove is formed in the upper end surface of the bottom plate, the two groups of polishing assemblies are bilaterally symmetrical and are in sliding connection with the sliding groove, the adjusting assembly is arranged in the sliding groove, the rotating support assembly is arranged on the upper end surface of the bottom plate, and the rotating support assembly is connected with the two groups of polishing assemblies through the linkage assembly; the polishing assembly comprises a sliding block, a supporting plate, a first fixing block, a second fixing block, a first rotating rod, a first bevel gear, a first polishing roller, a second bevel gear, a connecting plate, a third bevel gear and a second polishing roller, the sliding block is slidably mounted in the sliding groove and connected with the adjusting assembly, and the supporting plate is fixedly mounted on the upper end face of the sliding block.

Description

A polisher for metal work piece edge is polished

Technical Field

The utility model relates to the technical field of polishing devices, in particular to a polishing machine for polishing the edge of a metal workpiece.

Background

In the production process of round metal workpieces, burrs are easily generated on the surfaces of the workpieces due to casting errors, cutting machining errors and other reasons, the appearance of the workpieces is influenced due to the existence of the burrs, the use precision of the workpieces is also influenced, and therefore the deburring is an important process for machining the workpieces; traditional work piece is polished, especially in the edge of work piece, mainly polishes workpiece surface through artifical handheld abrasive paper, and the one side is polished and is accomplished the back, then the another side of conversion work piece is polished again, leads to work efficiency low to it is difficult to guarantee to polish planar planarization through the manual work, leads to polishing the effect relatively poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides the polisher for polishing the edge of the metal workpiece, which can automatically polish the edge of the workpiece in a circumferential manner, reduce manual operation and conversion of a workpiece working surface, and improve the working efficiency and polishing effect of the polisher.

The utility model discloses a polisher for polishing the edge of a metal workpiece, which comprises a bottom plate, two groups of polishing assemblies, a rotating support assembly, a linkage assembly and an adjusting assembly, wherein a sliding chute is formed in the upper end surface of the bottom plate; the polishing assembly comprises a sliding block, a supporting plate, a first fixing block, a second fixing block, a first rotating rod, a first bevel gear, a first polishing roller, a second bevel gear, a connecting plate, a third bevel gear and a second polishing roller, the sliding block is slidably mounted in the sliding groove, the sliding block is connected with the adjusting assembly, the supporting plate is fixedly mounted on the upper end face of the sliding block, the first fixing block is fixedly mounted at the top end of the left end face of the supporting plate, the second fixing block is fixedly mounted at the lower part of the left end face of the supporting plate, the first rotating rod is rotatably mounted between the first fixing block and the second fixing block, the lower end of the first rotating rod penetrates through the second fixing block, the first bevel gear is fixedly connected with the lower end of the first rotating rod, the first bevel gear is connected with the linkage assembly, the first polishing roller is fixedly mounted on the upper part of the first rotating rod, the second bevel gear is fixedly mounted on the upper part of the first rotating rod, and the second bevel gear is positioned above the first polishing roller, the connecting plate is fixedly installed on the lower end face of the first fixing block, the third bevel gear is installed on the connecting plate through a connecting shaft in a rotating mode, the third bevel gear is meshed with the second bevel gear, the left end of the connecting shaft penetrates through the connecting plate, and the second grinding roller is fixedly connected with the left end of the connecting shaft.

The utility model discloses a polisher for polishing the edge of a metal workpiece, wherein a rotating support assembly comprises two groups of roller frames, two groups of supporting rollers, a motor base, a first synchronizing wheel, a second synchronizing wheel and a first synchronizing belt, the two groups of roller frames are symmetrically and fixedly arranged on the upper end surface of a bottom plate in a front-back mode, the two groups of supporting rollers are respectively rotatably arranged on the two groups of roller frames through rotating shafts, the motor is fixedly arranged on the upper end surface of the bottom plate through the motor base, the first synchronizing wheel is fixedly connected with the output end of the motor, the left end of the rotating shaft on the front supporting roller penetrates through the left end surface of the roller frame and is fixedly connected with the second synchronizing wheel, and the second synchronizing wheel is mutually connected with the first synchronizing wheel through the first synchronizing belt.

The utility model relates to a polisher for polishing the edge of a metal workpiece, which comprises a linkage assembly, a second rotating rod, a first shaft seat, a third synchronizing wheel, a third rotating rod, two groups of second shaft seats, a fourth synchronizing wheel, a second synchronizing belt, two groups of rotating sleeves and two groups of fourth bevel gears, wherein the second rotating rod is rotatably installed on the upper end surface of a bottom plate through the first shaft seat, the left end of the second rotating rod is fixedly connected with the right end of a rotating shaft on a front supporting roller, the third synchronizing wheel is fixedly connected with the right end of the second rotating rod, the third rotating rod is rotatably installed on the upper end surface of the bottom plate through the two groups of second shaft seats, a limiting strip is arranged on the third rotating rod, the third rotating rod is positioned right above a sliding chute, the right end of the third rotating rod penetrates through the second shaft seats, the fourth synchronizing wheel is fixedly connected with the right end of the third rotating rod, the fourth synchronizing wheel is mutually connected with the third synchronizing wheel through the second synchronizing belt, the two groups of rotating sleeves are respectively and symmetrically rotatably installed on the inner side surfaces of supporting plates in the two groups of polishing assemblies, two sets of fourth bevel gears are respectively and fixedly connected with the inner end faces of the two sets of rotating sleeves, the fourth bevel gears are meshed with the first bevel gears, limiting grooves are formed in the fourth bevel gears, third rotating rods penetrate through the fourth bevel gears and the rotating sleeves and are in sliding connection with the limiting grooves in the fourth bevel gears through limiting strips, and the third rotating rods are rotatably connected with the rotating sleeves.

The utility model discloses a grinding machine for grinding the edge of a metal workpiece, wherein an adjusting assembly comprises a bidirectional screw rod and a hand wheel, the bidirectional screw rod is rotatably arranged in a sliding chute, third synchronizing wheels in two groups of grinding assemblies are respectively in threaded connection with the left part and the right part of the bidirectional screw rod, the right end of the bidirectional screw rod penetrates through the sliding chute and extends out of the sliding chute, and the hand wheel is fixedly connected with the right end of the bidirectional screw rod.

The polisher for polishing the edge of the metal workpiece further comprises a protective cover, wherein the protective cover is fixedly covered on the left end face of the front roller frame, and the second synchronizing wheel, the first synchronizing wheel and the first synchronizing belt are all located inside the protective cover.

The polisher for polishing the edge of the metal workpiece further comprises a plurality of groups of supporting legs, wherein the plurality of groups of supporting legs are uniformly distributed and installed on the lower end face of the bottom plate.

Compared with the prior art, the utility model has the beneficial effects that: the first bevel gear is arranged, the first rotating rod is driven to rotate by the linkage assembly, so that the first polishing roller rotates, and the first rotating rod drives the first polishing roller to rotate and simultaneously drives the connecting shaft to drive the second polishing roller to rotate by the cooperation of the second bevel gear and the third bevel gear, so that the edge of a workpiece can be automatically polished, the conversion of a working surface is reduced, and the working efficiency and the polishing effect of the device are improved; through setting up first synchronizing belt, under the effect of motor drive first synchronizing wheel pivoted, make the second synchronizing wheel drive the backing roll through the pivot and rotate to can make the work piece rotate, thereby be convenient for carry out the border to the edge of work piece and polish, further improve the work efficiency and the effect of polishing of device.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a partial isometric configuration of the present invention;

FIG. 3 is a schematic view of the front view and partial cross-sectional structure of the present invention;

FIG. 4 is a partially enlarged view of portion A of FIG. 3;

in the drawings, the reference numbers: 1. a base plate; 2. a slider; 3. a support plate; 4. a first fixed block; 5. A second fixed block; 6. a first rotating lever; 7. a first bevel gear; 8. a first grinding roller; 9. a second bevel gear; 10. a connecting plate; 11. a third bevel gear; 12. a second grinding roller; 13. a roller frame; 14. a support roller; 15. a motor; 16. a motor base; 17. a first synchronizing wheel; 18. a second synchronizing wheel; 19. a first synchronization belt; 20. a second rotating rod; 21. a first shaft seat; 22. a third synchronizing wheel; 23. a third rotating rod; 24. a second shaft base; 25. a fourth synchronizing wheel; 26. a second synchronous belt; 27. rotating the sleeve; 28. a fourth bevel gear; 29. a bidirectional lead screw; 30. a hand wheel; 31. A protective cover; 32. and (7) supporting legs.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

As shown in fig. 1 to 4, the polisher for polishing the edge of a metal workpiece of the present invention comprises a bottom plate 1, two sets of polishing assemblies, a rotation supporting assembly, a linkage assembly and an adjusting assembly, wherein a chute is arranged on the upper end surface of the bottom plate 1, the two sets of polishing assemblies are bilaterally symmetrical and slidably connected with the chute, the adjusting assembly is installed in the chute, the rotation supporting assembly is installed on the upper end surface of the bottom plate 1, and the rotation supporting assembly is connected with the two sets of polishing assemblies through the linkage assembly; the polishing component comprises a sliding block 2, a supporting plate 3, a first fixing block 4, a second fixing block 5, a first rotating rod 6, a first bevel gear 7, a first polishing roller 8, a second bevel gear 9, a connecting plate 10, a third bevel gear 11 and a second polishing roller 12, wherein the sliding block 2 is slidably mounted in a chute, the sliding block 2 is connected with an adjusting component, the supporting plate 3 is fixedly mounted on the upper end surface of the sliding block 2, the first fixing block 4 is fixedly mounted at the top end of the left end surface of the supporting plate 3, the second fixing block 5 is fixedly mounted on the lower portion of the left end surface of the supporting plate 3, the first rotating rod 6 is rotatably mounted between the first fixing block 4 and the second fixing block 5, the lower end of the first rotating rod 6 penetrates through the second fixing block 5, the first bevel gear 7 is fixedly connected with the lower end of the first rotating rod 6, the first bevel gear 7 is connected with a linkage component, the first polishing roller 8 is fixedly mounted on the upper portion of the first rotating rod 6, the second rotating rod 9 is fixedly mounted on the upper portion of the first rotating rod 6, the second bevel gear 9 is positioned above the first grinding roller 8, the connecting plate 10 is fixedly arranged on the lower end face of the first fixing block 4, the third bevel gear 11 is rotatably arranged on the connecting plate 10 through a connecting shaft, the third bevel gear 11 and the second bevel gear 9 are meshed with each other, the left end of the connecting shaft penetrates through the connecting plate 10, and the second grinding roller 12 is fixedly connected with the left end of the connecting shaft; through setting up first bevel gear 7, under the drive of linkage subassembly, make first bull stick 6 rotate, thereby make first grinding roller 8 rotate, and use through the cooperation of second bevel gear 9 and third bevel gear 11, make first bull stick 6 drive first grinding roller 8 pivoted also can make the connecting axle drive second grinding roller 12 rotate simultaneously, thereby can polish the edge of work piece automatically, and reduce the conversion of working face, improve the work efficiency and the effect of polishing of device.

The utility model relates to a grinding machine for grinding the edge of a metal workpiece, wherein a rotating support assembly comprises two groups of roller frames 13, two groups of supporting rollers 14, a motor 15, a motor base 16, a first synchronizing wheel 17, a second synchronizing wheel 18 and a first synchronizing belt 19, the two groups of roller frames 13 are symmetrically and fixedly arranged on the upper end surface of a bottom plate 1 in a front-back manner, the two groups of supporting rollers 14 are respectively and rotatably arranged on the two groups of roller frames 13 through rotating shafts, the motor 15 is fixedly arranged on the upper end surface of the bottom plate 1 through the motor base 16, the first synchronizing wheel 17 is fixedly connected with the output end of the motor 15, the left end of the rotating shaft on the front supporting roller 14 penetrates through the left end surface of the roller frames 13 and is fixedly connected with the second synchronizing wheel 18, and the second synchronizing wheel 18 is mutually connected with the first synchronizing wheel 17 through the first synchronizing belt 19; through setting up first synchronizing belt 19, under the effect that motor 15 drive first synchronizing wheel 17 rotated, make second synchronizing wheel 18 drive backing roll 14 through the pivot and rotate to can make the work piece rotate, thereby be convenient for carry out the border to the work piece and polish, further improve the work efficiency and the effect of polishing of device.

The utility model relates to a grinding machine for grinding the edge of a metal workpiece, wherein a linkage assembly comprises a second rotating rod 20, a first shaft seat 21, a third synchronous wheel 22, a third rotating rod 23, two groups of second shaft seats 24, a fourth synchronous wheel 25, a second synchronous belt 26, two groups of rotating sleeves 27 and two groups of fourth bevel gears 28, the second rotating rod 20 is rotatably arranged on the upper end surface of a bottom plate 1 through the first shaft seat 21, the left end of the second rotating rod 20 is fixedly connected with the right end of a rotating shaft on a front supporting roller 14, the third synchronous wheel 22 is fixedly connected with the right end of the second rotating rod 20, the third rotating rod 23 is rotatably arranged on the upper end surface of the bottom plate 1 through the two groups of second shaft seats 24, a limit strip is arranged on the third rotating rod 23, the third rotating rod 23 is positioned right above a sliding chute, the right end of the third rotating rod 23 penetrates through the second shaft seats 24, the fourth synchronous wheel 25 is fixedly connected with the right end of the third rotating rod 23, and the fourth synchronous wheel 25 is connected with the third synchronous wheel 22 through the second synchronous belt 26, two groups of rotating sleeves 27 are symmetrically and rotatably arranged on the inner side surfaces of the supporting plates 3 in the two groups of grinding assemblies respectively, two groups of fourth bevel gears 28 are fixedly connected with the inner end surfaces of the two groups of rotating sleeves 27 respectively, the fourth bevel gears 28 are meshed with the first bevel gears 7, limiting grooves are formed in the fourth bevel gears 28, the third rotating rod 23 penetrates through the fourth bevel gears 28 and the rotating sleeves 27, the third rotating rod 23 is in sliding connection with the limiting grooves in the fourth bevel gears 28 through limiting strips, and the third rotating rod 23 is rotatably connected with the rotating sleeves 27; through setting up second bull stick 20, when backing roll 14 rotated, drive third synchronizing wheel 22 and rotate, use through the cooperation of second hold-in range 26, make fourth synchronizing wheel 25 drive third bull stick 23 and rotate, under the interact of spacing strip and spacing groove, when third bull stick 23 rotated, make fourth bevel gear 28 drive first bevel gear 7 and rotate, thereby begin to drive first grinding roller 8 and second grinding roller 12 and rotate and polish, the operability and the mechanical automation degree of improvement device.

The utility model relates to a grinding machine for grinding the edge of a metal workpiece, wherein an adjusting assembly comprises a bidirectional screw 29 and a hand wheel 30, the bidirectional screw 29 is rotatably arranged in a sliding chute, third synchronizing wheels 22 in two groups of grinding assemblies are respectively in threaded connection with the left part and the right part of the bidirectional screw 29, the right end of the bidirectional screw 29 penetrates through the sliding chute and extends out to the outside, and the hand wheel 30 is fixedly connected with the right end of the bidirectional screw 29; through twisting the hand wheel 30 soon, make two-way lead screw 29 can drive slider 2 in two sets of grinding assembly simultaneously and move in opposite directions, under backup pad 3, first fixed block 4 and the use of mutually supporting of first bull stick 6, make the first grinding roller 8 in two sets of grinding assemblies remove in opposite directions to can polish the work piece of different width, the reduction device uses the limitation, can also play the effect of centre gripping simultaneously, improves the reliability of device work.

The polisher for polishing the edge of the metal workpiece further comprises a protective cover 31, wherein the protective cover 31 is fixedly covered on the left end surface of the front roller frame 13, and the second synchronous wheel 18, the first synchronous wheel 17 and the first synchronous belt 19 are all positioned inside the protective cover 31; through setting up protection casing 31, can effectively protect second synchronizing wheel 18, first synchronizing wheel 17 etc. reduce external environment factor and influence the condition of device normal operation, improve the safety in utilization of device.

The polisher for polishing the edge of the metal workpiece further comprises a plurality of groups of supporting legs 32, wherein the plurality of groups of supporting legs 32 are uniformly distributed and installed on the lower end face of the bottom plate 1; through setting up landing leg 32, can carry out fixed stay to bottom plate 1, avoid bottom plate 1 direct and ground contact to cause the friction damage, improve the working strength and the life of device.

The utility model relates to a polisher for polishing the edge of a metal workpiece, which is operated by firstly placing the workpiece on two groups of supporting rollers 14, then screwing a hand wheel 30 to enable a bidirectional screw 29 to simultaneously drive sliders 2 in two groups of polishing assemblies to move oppositely, enabling first polishing rollers 8 in the two groups of polishing assemblies to move oppositely under the mutual matching use of a supporting plate 3, a first fixing block 4 and a first rotating rod 6 until the first polishing rollers 8 are contacted with the side end surfaces of the workpiece, then starting a motor 15, enabling the rotating shaft to drive the supporting rollers 14 to rotate under the mutual connecting action of a first synchronous wheel 17, a first synchronous belt 19 and a second synchronous wheel 18 so as to drive the workpiece to rotate, enabling a second rotating rod 20 to drive a third synchronous wheel 22 to rotate while the supporting rollers 14 rotate, and enabling the second synchronous wheel 26 to be matched with a fourth synchronous wheel 25 for use, the third rotating rod 23 drives the fourth bevel gear 28 to rotate, so that the first bevel gear 7 drives the first rotating rod 6 to rotate, the first grinding roller 8 rotates, and the first grinding roller 6 drives the first grinding roller 8 to rotate and simultaneously enables the connecting shaft to drive the second grinding roller 12 to rotate through the matching use of the second bevel gear 9 and the third bevel gear 11, so that the second grinding roller 12 and the first grinding roller 8 rotate along with the rotation of the workpiece, and the rotating directions of the first grinding roller 8 and the second grinding roller 12 are opposite, so that the first grinding roller 8 and the second grinding roller 12 grind the workpiece until the grinding is finished.

The installation mode, the connection mode or the arrangement mode of the polisher for polishing the edge of the metal workpiece are common mechanical modes, and the polisher can be implemented as long as the beneficial effects of the polisher are achieved.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A polisher for polishing the edge of a metal workpiece is characterized by comprising a bottom plate (1), two groups of polishing assemblies, a rotating support assembly, a linkage assembly and an adjusting assembly, wherein a sliding groove is formed in the upper end face of the bottom plate (1), the two groups of polishing assemblies are bilaterally symmetrical and are in sliding connection with the sliding groove, the adjusting assembly is installed in the sliding groove, the rotating support assembly is installed on the upper end face of the bottom plate (1), and the rotating support assembly is connected with the two groups of polishing assemblies through the linkage assembly; the polishing component comprises a sliding block (2), a supporting plate (3), a first fixing block (4), a second fixing block (5), a first rotating rod (6), a first bevel gear (7), a first polishing roller (8), a second bevel gear (9), a connecting plate (10), a third bevel gear (11) and a second polishing roller (12), the sliding block (2) is slidably mounted in a chute, the sliding block (2) is connected with an adjusting component, the supporting plate (3) is fixedly mounted on the upper end surface of the sliding block (2), the first fixing block (4) is fixedly mounted on the top end of the left end surface of the supporting plate (3), the second fixing block (5) is fixedly mounted on the lower portion of the left end surface of the supporting plate (3), the first rotating rod (6) is rotatably mounted between the first fixing block (4) and the second fixing block (5), the lower end of the first rotating rod (6) penetrates through the second fixing block (5), the first bevel gear (7) is fixedly connected with the lower end of the first rotating rod (6), and first bevel gear (7) are connected with the linkage subassembly, first polishing roller (8) fixed mounting is on first bull stick (6) upper portion, second bevel gear (9) fixed mounting is on first bull stick (6) upper portion, and second bevel gear (9) are in first polishing roller (8) top, terminal surface under connecting plate (10) fixed mounting is in first fixed block (4), third bevel gear (11) rotate through the connecting axle and install on connecting plate (10), and third bevel gear (11) and second bevel gear (9) intermeshing, connecting plate (10) are passed to the connecting axle left end, and second polishing roller (12) and connecting axle left end fixed connection.

2. The grinding machine for grinding the edge of the metal workpiece according to claim 1, characterized in that the rotating support assembly comprises two sets of roller frames (13), two sets of supporting rollers (14), a motor (15), a motor base (16), a first synchronizing wheel (17), a second synchronizing wheel (18) and a first synchronizing belt (19), the two sets of roller frames (13) are symmetrically and fixedly arranged on the upper end surface of the bottom plate (1) in a front-back manner, the two sets of supporting rollers (14) are respectively and rotatably arranged on the two sets of roller frames (13) through rotating shafts, the motor (15) is fixedly arranged on the upper end surface of the bottom plate (1) through the motor base (16), the first synchronizing wheel (17) is fixedly connected with the output end of the motor (15), the left end of the rotating shaft on the front supporting roller (14) penetrates through the left end surface of the roller frame (13) and is fixedly connected with the second synchronizing wheel (18), and the second synchronous wheel (18) and the first synchronous wheel (17) are connected with each other through a first synchronous belt (19).

3. The grinding machine for grinding the edge of the metal workpiece according to claim 1, characterized in that the linkage assembly comprises a second rotating rod (20), a first shaft seat (21), a third synchronizing wheel (22), a third rotating rod (23), two groups of second shaft seats (24), a fourth synchronizing wheel (25), a second synchronous belt (26), two groups of rotating sleeves (27) and two groups of fourth bevel gears (28), the second rotating rod (20) is rotatably installed on the upper end surface of the bottom plate (1) through the first shaft seat (21), the left end of the second rotating rod (20) is fixedly connected with the right end of the rotating shaft on the front supporting roll (14), the third synchronizing wheel (22) is fixedly connected with the right end of the second rotating rod (20), the third rotating rod (23) is rotatably installed on the upper end surface of the bottom plate (1) through the two groups of second shaft seats (24), a limit strip is arranged on the third rotating rod (23), and the third rotating rod (23) is positioned right above the chute, the right end of a third rotating rod (23) penetrates through a second shaft seat (24), a fourth synchronizing wheel (25) is fixedly connected with the right end of the third rotating rod (23), the fourth synchronizing wheel (25) is connected with the third synchronizing wheel (22) through a second synchronous belt (26), two groups of rotating sleeves (27) are respectively and symmetrically installed on the inner side surfaces of supporting plates (3) in the two groups of grinding assemblies in a rotating mode, two groups of fourth bevel gears (28) are respectively and fixedly connected with the inner end surfaces of the two groups of rotating sleeves (27), the fourth bevel gears (28) are meshed with the first bevel gears (7) mutually, limiting grooves are formed in the fourth bevel gears (28), the third rotating rod (23) penetrates through the fourth bevel gears (28) and the rotating sleeves (27), the third rotating rod (23) is connected with the limiting grooves in the fourth bevel gears (28) in a sliding mode through limiting strips, and the third rotating rod (23) is rotatably connected with the rotating sleeves (27).

4. The sander for edge grinding of a metal workpiece as set forth in claim 1, wherein the adjustment assembly comprises a bidirectional screw (29) and a hand wheel (30), the bidirectional screw (29) is rotatably mounted in the slide groove, and the third synchronizing wheels (22) of the two sets of grinding assemblies are respectively in threaded connection with the left and right portions of the bidirectional screw (29), the right end of the bidirectional screw (29) passes through the slide groove and extends to the outside, and the hand wheel (30) is fixedly connected with the right end of the bidirectional screw (29).

5. A sander for edge grinding of a metal workpiece according to claim 4, further comprising a shield (31), wherein the shield (31) is fixedly attached to the left end face of the front roller housing (13), and the second synchronizing wheel (18), the first synchronizing wheel (17) and the first synchronizing belt (19) are all located inside the shield (31).

6. A sander for edge grinding of a metal workpiece according to claim 5, further comprising a plurality of sets of legs (32), wherein the plurality of sets of legs (32) are evenly distributed and mounted on the lower end surface of the base plate (1).