CN212071595U - Anchor clamps place platform of polisher - Google Patents

Abstract

The utility model relates to a clamp placing platform of a grinding machine, which comprises a base frame, a driving mechanism, a platform assembly and a first connecting assembly, wherein the driving mechanism comprises a bearing seat fixed on the base frame, the bearing seat is positioned at two sides of the base frame, a rotating screw rod is rotatably connected on the bearing seat, a driving piece for driving the rotating screw rod to rotate is arranged on the base frame, a moving block is in threaded connection on the rotating screw rod, the platform assembly is fixed on the moving block through the first connecting assembly, the platform assembly comprises a fixed frame fixed on the first connecting assembly, and the placing plate is fixed on the fixing frame, a first dustproof assembly is arranged outside the driving mechanism and comprises a first connecting plate fixed on the first connecting assembly, first dustproof covers are fixed at two ends of the first connecting plate, one end of each first dustproof cover is fixedly connected with the same ends of the two first connecting plates, and the other end of each first dustproof cover is fixedly connected with the base frame. The utility model discloses have the effect of avoiding the sweeps to get into drive mechanism as far as possible.

Description

Anchor clamps place platform of polisher

Technical Field

The utility model belongs to the technical field of the technique of work piece burnishing and polishing and specifically relates to an anchor clamps place the platform of polisher is related to.

Background

The grinding machine is used for polishing the surface of a workpiece, when the workpiece is ground, a clamp is needed to fix the workpiece on a placing platform, then a grinding head of the grinding machine performs left-right linear reciprocating motion, and a placing plate also performs front-back linear reciprocating motion through a transmission mechanism until the surface of the workpiece is processed.

Generally place the board and can seted up a plurality of holes for it is fixed with anchor clamps, but can produce certain sweeps at the in-process of the work piece of polishing, can fall drive mechanism through placing the hole on the board on, the processing environment dust is more, permeates drive mechanism easily, influences drive mechanism's operation, thereby makes and places the unable normal motion of board.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing an anchor clamps place the platform of polisher has the advantage of avoiding the sweeps to get into drive mechanism as far as possible.

The above object of the present invention can be achieved by the following technical solutions:

a clamp placement platform of a grinding machine comprises a base frame, a driving mechanism, a platform assembly and a first linking assembly, wherein the driving mechanism comprises bearing blocks fixed on the base frame, the bearing blocks are positioned on two sides of the base frame, rotating screws are rotatably connected to the bearing blocks, driving pieces for driving the rotating screws to rotate are arranged on the base frame, moving blocks are connected to the rotating screws in a threaded mode, the platform assembly is fixed on the moving blocks through the first linking assembly, the platform assembly comprises a fixing frame fixed on the first linking assembly and a placement plate fixed on the fixing frame, a first dustproof assembly is arranged outside the driving mechanism and comprises a first connecting plate fixed on the first linking assembly, first dustproof covers are fixed at two ends of the first connecting plate and made of flexible materials and can be folded or unfolded along with linear motion of the first connecting plate, one end of the first dust cover is fixedly connected with the same ends of the two first connecting plates, and the other end of the first dust cover is fixedly connected with the base frame.

Through adopting above-mentioned technical scheme, first dust cover will rotate the upper surface encirclement of screw rod, has reduced the probability that the sweeps falls on rotating the screw rod as far as possible, has guaranteed actuating mechanism can be comparatively normal operation.

The present invention may be further configured in a preferred embodiment as: the inside of first dust cover is equipped with the U-shaped slide, and the U-shaped slide is fixed on the bed frame, and the both sides of U-shaped slide are fixed with the first L shape gib block of restriction first dust cover wobbling, and the both ends of U-shaped slide are equipped with first bending piece, are fixed with first sunshade on the first bending piece, and first dust cover presents fixed state through first sunshade and bed frame.

Through adopting above-mentioned technical scheme, the U-shaped slide has further reduced the sweeps and has fallen the probability on rotating the screw rod, and the U-shaped slide has sheltered from the below of first dust cover, makes and rotates more that the screw rod is encircleed to avoid the sweeps to fall on rotating the screw rod as far as possible, and first L shape gib block has played limiting displacement to first dust cover, what make first dust cover can be stable slides.

The present invention may be further configured in a preferred embodiment as: the base frame is also provided with a guide mechanism, the guide mechanism comprises a slide rail fixing plate fixed on the base frame, the slide rail fixing plate is positioned on two sides of the rotating screw rod, a slide rail is arranged on the slide rail fixing plate, a sliding block is sleeved on the slide rail and connected with the fixing frame through a second linking component, a second dustproof component is arranged outside the guide mechanism and comprises a second connecting plate fixed on the second linking component, two ends of the second connecting plate are fixedly provided with second dustproof covers, the second dustproof covers are made of flexible materials and can be folded or unfolded along with the linear motion of the second connecting plate, one end of each second dustproof cover is fixedly connected with the same end of the two second connecting plates, the other end of each second dustproof cover is fixed through a second shielding plate, L-shaped plates are arranged inside the second dustproof covers, the L-shaped plates are positioned on two sides of the second dustproof covers, and the horizontal parts of the L-shaped, and a second L-shaped guide strip is arranged on the vertical part of the L-shaped plate, second bending pieces are arranged at two ends of the L-shaped plate, and the second shielding plate is connected with the second bending pieces.

Through adopting above-mentioned technical scheme, guiding mechanism has played better injecing to the stationarity of mount, makes the removal that the mount can be more stable to the second dust cover encloses guiding mechanism's upper surface, has avoided the sweeps to fall on the slide rail as far as possible.

The present invention may be further configured in a preferred embodiment as: the first dust cover is characterized in that a first protection assembly is arranged outside the first dust cover and comprises first protection shells fixed on the base frame and located on two sides of the first dust cover, each first protection shell comprises a first lower shell piece in a horizontal state, a first upper shell piece and a first vertical piece connected between the first lower shell piece and the first upper shell piece, and the first lower shell pieces are close to the U-shaped slide ways.

Through adopting above-mentioned technical scheme, first protection component surrounds first dust cover, has reduced the probability that the sweeps fell on the first dust cover to reduce the probability that the sweeps fell on rotating the screw rod.

The present invention may be further configured in a preferred embodiment as: the first upper shell piece is in an inclined state, and the first upper shell piece is gradually far away from the first lower shell piece in the direction of gradually far away from the first vertical piece.

Through adopting above-mentioned technical scheme, during the work piece when polishing, the back on the first epitheca piece is fallen from placing the board to the sweeps that produces, because first epitheca piece upper surface is the inclined plane, the sweeps can slide down from first epitheca piece owing to the action of gravity and go, has avoided piling up of sweeps on first epitheca piece.

The present invention may be further configured in a preferred embodiment as: the first connecting assembly comprises a first transition plate connected with the moving block and a first connecting frame connected with the first transition plate, the first connecting frame comprises a first connecting bottom plate arranged on the first transition plate, two first side plates respectively fixed on two sides of the first connecting bottom plate and a first connecting top plate fixed between the upper surfaces of the two first side plates, a first cover plate is arranged between the first upper shell pieces, two ends of the first cover plate are arranged on the first shielding plate, and the first cover plate penetrates through a space formed by the first connecting frame.

Through adopting above-mentioned technical scheme, the cooperation of first sunshade and first linking frame makes the platform subassembly guarantee stable the exposing area of the first dust cover that reduces again to reduced the probability that the sweeps fell on the first dust cover, also reduced the probability that the sweeps fell on rotating the screw rod.

The present invention may be further configured in a preferred embodiment as: the first cover plate is V-shaped, and reinforcing ribs are arranged on the first cover plate.

Through adopting above-mentioned technical scheme, because the effect of gravity, the middle part of first upper cover plate can produce flagging, and the design of V font can weaken the emergence of this kind of condition to the strengthening rib has played the reinforcing effect to first upper cover plate, has prevented that first upper cover plate from taking place deformation.

The present invention may be further configured in a preferred embodiment as: the outside of second dust cover is equipped with second protection component, second protection component is including fixing on the bed frame and being located the second protective housing of second dust cover both sides, the second protective housing is including the second lower shell piece, the second epitheca piece that are the horizontality and connect in the vertical piece of second between the two.

Through adopting above-mentioned technical scheme, second protection component surrounds the second dust cover, has reduced the probability that the sweeps falls on the second dust cover to the probability that the sweeps falls on the slide rail has been reduced.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the first dust cover and the second dust cover respectively play a role in shielding the driving mechanism and the guide mechanism, so that the probability of scraps falling onto the rotating screw and the sliding rail is respectively reduced, and the stable operation of the platform assembly is ensured;

2. first protection component and second protection component have played the effect of shielding to first dust cover and second dust cover respectively to first protection component surrounds the bottom of first dust cover, and the bottom of second protection component with the second dust cover surrounds, thereby rotates the exposed area reduction of screw rod and slide rail, makes the sweeps be difficult to the entering more.

Drawings

Fig. 1 is a schematic structural view of a base frame.

Fig. 2 is a schematic structural view of the drive mechanism.

Fig. 3 is a schematic structural view of the guide mechanism.

Fig. 4 is a schematic structural view of the platform assembly.

FIG. 5 is a schematic view of a splice assembly.

FIG. 6 is a schematic view of a first engaging member.

FIG. 7 is a schematic view of a second engagement assembly.

Fig. 8 is a schematic structural view of the dust-proof assembly.

Fig. 9 is a schematic structural view of the first dust-proof assembly.

Fig. 10 is a schematic structural view of a U-shaped chute.

Fig. 11 is a schematic structural view of the second dust-proof assembly.

FIG. 12 is a schematic view of the structure of an L-shaped plate.

Fig. 13 is a schematic structural view of the shield assembly.

Fig. 14 is a schematic structural view of the first dust-proof case.

Fig. 15 is a schematic structural view of the first cover plate.

Fig. 16 is a schematic structural view of the second dust cover.

Fig. 17 is a schematic structural view of the second cover plate.

Fig. 18 is a schematic view of the structure of the boot attachment.

Fig. 19 is a schematic structural view of a jig placing table of a grinder.

In the figure, 1, a base frame; 11. an outer frame; 12. a cross beam; 13. a reinforcing strip; 21. a drive mechanism; 211. a bearing seat; 212. rotating the screw; 213. a moving block; 214. a drive member; 22. a guide mechanism; 221. a slide rail fixing plate; 222. a slide rail; 223. a slider; 224. positioning blocks; 3. a platform assembly; 31. a fixed mount; 311. a fixing frame; 312. a fixing strip; 32. placing the plate; 321. a hole; 41. a first engagement assembly; 411. a first transition plate; 412. a first connection frame; 4121. a first connection chassis; 4122. a first side plate; 4123. a first connecting top plate; 42. a second engagement assembly; 421. a second transition plate; 422. a second connection frame; 4221. a second connection base plate; 4222. a second side plate; 4223. a second connecting top plate; 5. a dust-proof assembly; 51. a first dust-proof assembly; 511. a first connecting plate; 512. a first dust cover; 513. a first guide piece; 514. a U-shaped slideway; 515. a first L-shaped guide strip; 516. a first bending piece; 517. a first shield plate; 52. a second dust-proof component; 521. a second connecting plate; 522. a second dust cover; 523. a second guide piece; 524. an L-shaped plate; 525. a second L-shaped guide strip; 526. a second bending piece; 527. a second shield plate; 6. a guard assembly; 61. a first guard assembly; 611. a first protective shell; 6111. a first lower shell piece; 6112. a first upper shell piece; 6113. a first vertical piece; 612. a first cover plate; 613. reinforcing ribs; 62. a second guard assembly; 621. a second protective shell; 6211. a second lower shell piece; 6212. a second upper shell piece; 6213. a second vertical piece; 622. a second cover plate; 623. a reinforcing plate; 7. a protective cover; 8. a protective cover connection assembly; 81. a boot attachment.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a fixture placement platform of polisher, including bed frame 1, bed frame 1 includes frame 11, and frame 11 internal fixation has two crossbeams 12, and crossbeam 12 is arranged along the length direction of frame 11, is fixed with two rows of stiffeners 13 between crossbeam 12 and the frame 11.

Referring to fig. 2, a transmission mechanism is fixed on the base frame 1, the transmission mechanism includes a driving mechanism 21, the driving mechanism 21 includes a bearing seat 211 fixed on the outer frame 11, the bearing seat 211 is located at two ends of the outer frame 11, a rotating screw 212 is connected to the bearing seat 211 in a rotating manner, a moving block 213 is connected to the rotating screw 212 in a threaded manner, the rotating screw 212 is located between the cross beams 12, the rotating screw 212 rotates through a driving part 214, the driving part 214 is a driving motor, the driving part 214 is fixed on the base frame 1, and the rotating screw 212 is connected to an output shaft of the driving part.

Referring to fig. 2 and 3, the transmission mechanism further includes a guide mechanism 22, the guide mechanism 22 includes two slide rail fixing plates 221 fixed on the cross beam 12, the two slide rail fixing plates 221 are respectively located on two L sides of the rotating screw 212, an embedded groove is formed in each slide rail fixing plate 221, a slide rail 222 is fixedly connected in each embedded groove through a screw, sliding grooves are formed in two sides of each slide rail 222, a sliding block 223 is sleeved on each slide rail 222, a positioning block 224 is integrally arranged on each sliding block 223, and each positioning block 224 is located in each sliding groove.

Referring to fig. 4, the platform assembly 3 is fixed to the moving block 213 and the sliding block 223 through a joint assembly. The platform assembly 3 comprises a fixing frame 31 fixed on the connecting assembly and a placing plate 32 fixed on the fixing frame 31, a hole 321 is formed in the placing plate 32, and the clamp is fixed on the hole 321 through a screw

Referring to fig. 5, the engaging members include a first engaging member 41 fixedly coupled to the moving block 213 and a second engaging member 42 fixedly coupled to the sliding block 223.

Referring to fig. 5 and 6, the first engaging assembly 41 includes a first transition plate 411 fixed to the moving block 213 and a first connecting frame 412 fixed to the first transition plate 411, and the first connecting frame 412 includes a first connecting bottom plate 4121 fixed to the first transition plate 411, two first side plates 4122 fixed to both sides of the first connecting bottom plate 4121, respectively, and a first connecting top plate 4123 fixed between upper surfaces of the two first side plates 4122.

Referring to fig. 5 and 7, the second link assembly 42 includes a second transition plate 421 fixed to the sliding block 223 and a second connection frame 422 fixed to the second transition plate 421, and the second connection frame 422 includes a second connection bottom plate 4221 fixed to the second transition plate 421, two second side plates 4222 respectively fixed to both sides of the second connection bottom plate 4221, and a second connection top plate 4223 fixed between upper surfaces of the two second side plates 4222.

Referring to fig. 4, the fixing frame 31 includes a fixing frame 311, a first connection top plate 4123 and a second connection top plate 4223 are respectively fixedly connected to an inner side of the fixing frame 311, fixing bars 312 are fixed between the fixing frame 311 and the second side plate 4222 and between the first side plate 4122 and the second side plate 4222, the fixing bars 312, the fixing frame 311, the first connection top plate 4123 and the second connection top plate 4223 have top surfaces in a same plane, and the placement plate 32 is located on the plane and is simultaneously fixedly connected to the fixing frame 311 and the fixing bars 312.

Referring to fig. 8, the exterior of the transmission mechanism is provided with a dust-proof assembly 5, and the dust-proof assembly 5 includes a first dust-proof assembly 51 acting on the driving mechanism 21 and a second dust-proof assembly 52 acting on the guide mechanism 22.

Referring to fig. 9 and 10, the first dust-proof assembly 51 includes a first connecting plate 511 fixed on the first side plate 4122, a first dust-proof cover 512 is fixedly connected to both ends of the first connecting plate 511, the first dust-proof cover 512 is made of flexible material or is wavy, and the first dust-proof cover 512 can be folded or unfolded along with the linear motion of the first connecting plate 511; a plurality of first guide pieces 513 are fixed on the first dust cover 512, the first guide pieces 513 are located on the inner wall of the first dust cover 512, a U-shaped slideway 514 is arranged inside the first dust cover 512, the bottom surface of the U-shaped slideway 514 is fixed on the base frame 1, first L-shaped guide strips 515 for limiting the first dust cover 512 to swing are fixed on two sides of the U-shaped slideway 514, and the first L-shaped guide strips 515 are located in the first guide pieces 513.

The two ends of the U-shaped slideway 514 are integrally provided with a first bending piece 516, the first bending piece 516 is fixedly connected with a first shielding plate 517, one end of a first dust cover 512 is fixedly connected with the same ends of the two first connecting plates 511, and the other end of the first dust cover is fixedly connected with the first shielding plate 517.

Referring to fig. 11 and 12, the second dust-proof assembly 52 includes a second connecting plate 521 fixed on the second side plate 4222, the second dust-proof cover 522 is fixedly connected to two ends of the second connecting plate 521, the second dust-proof cover 522 is made of a flexible material or is wavy, and the second dust-proof cover 522 can be folded or unfolded along with the linear motion of the second connecting plate 521; a plurality of second guide pieces 523 are fixed on the second dust cover 522, the second guide pieces 523 are located on the inner wall of the second dust cover 522, an L-shaped plate 524 is arranged inside the second dust cover 522, the L-shaped plate 524 is located on two sides of the second dust cover 522, the horizontal part of the L-shaped plate 524 is fixed on the slide rail fixing plate 221, a second L-shaped guide strip 525 is integrally arranged at the upper end of the vertical part of the L-shaped plate 524, and the second L-shaped guide strip 525 is located in the second guide pieces 523.

The both ends of L-shaped plate 524 are fixed with the second piece 526 of bending, fixedly connected with second shutter 527 on the second piece 526 of bending, the same end fixed connection of one end and two connecting plates of second dust cover 522, the other end and second shutter 527 fixed connection.

Referring to fig. 13, the exterior of the dust-proof assembly 5 is provided with a shield assembly 6, and the shield assembly 6 includes a first shield assembly 61 disposed outside the first dust-proof assembly 51 and a second shield assembly 62 disposed outside the second dust-proof assembly 52.

Referring to fig. 14 and 15, the first protection assembly 61 includes a first protection shell 611 fixed on the base frame 1, the first protection shell 611 is located at two sides of the first dust cover 512, the first protection shell 611 includes a first lower shell 6111 in a horizontal state, a first upper shell 6112 in an inclined state, and a first vertical shell 6113 connected therebetween, the first upper shell 6112 gradually gets away from the first lower shell 6111 in a direction gradually getting away from the first vertical shell 6113, the first vertical shell 6113 is fixed on the base frame 1, the first lower shell 6111 is as close as possible to the U-shaped sliding way 514, even contacts with the U-shaped sliding way 514, so as to avoid penetration of waste chips into the driving mechanism 21 from between the two. A first cover plate 612 is arranged between the first upper housing pieces 6112, two ends of the first cover plate 612 are fixed on the first shielding plate 517, the first cover plate 612 is positioned between the first side plates 4122 and above the first connecting bottom plate 4121, and above the first connecting top plate 4123, the first cover plate 612 is V-shaped, a reinforcing rib 613 is fixed on the first cover plate 612, a gap between the first cover plate 612 and the first upper housing pieces 6112 is as small as possible, and only the first side plate 4122 is allowed to perform linear reciprocating motion, so that dust entering the driving mechanism 21 from the gap between the first cover plate 612 and the first upper housing pieces 6112 is reduced as much as possible.

Referring to fig. 16 and 17, the second shield assembly 62 includes a second shield case 621 fixed to the base frame 1, the second shield case 621 is located at both sides of the second dust cover 522, the second shield case 621 includes a second lower case piece 6211 in a horizontal state, a second upper case piece 6212 in an inclined state, and a second vertical piece 6213 connected therebetween, the second upper case piece 6212 gradually gets away from the second lower case piece 6211 in a direction gradually getting away from the second vertical piece 6213, the second vertical piece 6213 is fixed to the base frame 1, and the second lower case piece 6211 is located on the cross beam 12 to prevent the penetration of the waste into the guide mechanism 22 from between the two. A second cover plate 622 is arranged between the second upper shell pieces 6212, two ends of the second cover plate 622 are fixed on a second cover plate 527, the second cover plate 622 is positioned between the second side plates 4222 and above the second T-shaped connecting plate, the second cover plate 622 is in a V shape below the second connecting top plate 4223, a reinforcing plate 623 in an inverted V shape is fixed on the second cover plate 622, the gap between the second cover plate 622 and the second upper shell pieces 6212 is as small as possible, only the second side plate 4222 is allowed to perform linear reciprocating motion, and accordingly dust is prevented from entering the guide mechanism 22 from the gap between the second cover plate 622 and the second upper shell pieces 6212 as far as possible.

Referring to fig. 18 and 19, the edge of the outer frame 11 is fixed with the protective cover 7 through the protective cover connecting assembly 8, the protective cover connecting assembly 8 comprises a plurality of protective cover connecting pieces 81 fixed on the outer frame 11, and the protective cover 7 is fixed with the protective cover connecting pieces to better surround the dustproof assembly 5, so that the falling of scraps is reduced as much as possible.

The implementation principle of the embodiment is as follows: drive through actuating mechanism 21 and place the removal of board 32, guiding mechanism 22 has guaranteed the stationarity of placing board 32, and at the in-process of the work piece of polishing, the sweeps that produces falls on protective component 6 through placing board 32, and the at least part can fall in the clearance between protective component 6 and the dustproof subassembly 5, nevertheless because sheltering from of dustproof subassembly 5, makes this part sweeps hardly enter into actuating mechanism 21 and guiding mechanism 22.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a anchor clamps place the platform of polisher, includes bed frame (1), actuating mechanism (21), platform subassembly (3) and first linking subassembly (41), its characterized in that: the driving mechanism (21) comprises a bearing seat (211) fixed on the base frame (1), the bearing seat (211) is located on two sides of the base frame (1), a rotating screw rod (212) is connected to the bearing seat (211) in a rotating mode, a driving piece (214) for driving the rotating screw rod (212) to rotate is arranged on the base frame (1), a moving block (213) is connected to the rotating screw rod (212) in a threaded mode, the platform assembly (3) is fixed on the moving block (213) through a first connecting assembly (41), the platform assembly (3) comprises a fixing frame (31) fixed on the first connecting assembly (41) and a placing plate (32) fixed on the fixing frame (31), a first dustproof assembly (51) is arranged outside the driving mechanism (21), and the first dustproof assembly (51) comprises a first connecting plate (511) fixed on the first connecting assembly (41), first dust covers (512) are fixed at two ends of the first connecting plate (511), the first dust covers (512) are made of flexible materials, the first dust covers (512) can be folded or unfolded along with linear motion of the first connecting plate (511), one end of each first dust cover (512) is fixedly connected with the same ends of the two first connecting plates (511), and the other end of each first dust cover is fixedly connected with the base frame (1).

2. The jig placing platform of a grinder according to claim 1, wherein: the inside of first dust cover (512) is equipped with U-shaped slide (514), U-shaped slide (514) are fixed on bed frame (1), the both sides of U-shaped slide (514) are fixed with first L shape gib block (515) of restriction first dust cover (512) wobbling, the both ends of U-shaped slide (514) are equipped with first bending piece (516), be fixed with first sunshade board (517) on first bending piece (516), first dust cover (512) present fixed state through first sunshade board (517) and bed frame (1).

3. The jig placing platform of a grinder according to claim 1, wherein: the base frame (1) is further provided with a guide mechanism (22), the guide mechanism (22) comprises a slide rail fixing plate (221) fixed on the base frame (1), the slide rail fixing plate (221) is located on two sides of the rotating screw (212), a slide rail (222) is arranged on the slide rail fixing plate (221), a slide block (223) is sleeved on the slide rail (222), the slide block (223) is connected with the fixed frame (31) through a second connecting component (42), a second dustproof component (52) is arranged outside the guide mechanism (22), the second dustproof component (52) comprises a second connecting plate (521) fixed on the second connecting component (42), second dustproof covers (522) are fixed at two ends of the second connecting plate (521), the second dustproof covers (522) are made of flexible materials, and can be folded or unfolded along with the linear motion of the second connecting plate (521), the one end and the same one end fixed connection of two second connecting plates (521) of second dust cover (522), the other end is fixed through second sunshade board (527), the inside of second dust cover (522) is equipped with L shaped plate (524), the horizontal part that L shaped plate (524) are located the both sides of second dust cover (522) and L shaped plate (524) is fixed on slide rail fixed plate (221), be equipped with second L shape gib block (525) in the vertical portion of L shaped plate (524), the both ends of L shaped plate (524) are equipped with the second piece (526) of bending, second sunshade board (527) are connected with second piece (526) of bending.

4. The jig placing platform of a grinder as set forth in claim 2, wherein: the outer portion of the first dust cover (512) is provided with a first protection assembly (61), the first protection assembly (61) comprises a first protection shell (611) which is fixed on the base frame (1) and located on two sides of the first dust cover (512), the first protection shell (611) comprises a first lower shell piece (6111) and a first upper shell piece (6112) which are in a horizontal state and a first vertical piece (6113) which is connected between the first lower shell piece and the first upper shell piece, and the first lower shell piece (6111) is close to the U-shaped slide way (514).

5. The jig placing platform of a grinder according to claim 4, wherein: the first upper shell piece (6112) is in an inclined state, and the first upper shell piece (6112) is gradually far away from the first lower shell piece (6111) in the direction of gradually far away from the first vertical piece (6113).

6. The jig placing platform of a grinder as set forth in claim 5, wherein: the first connecting assembly (41) comprises a first transition plate (411) connected with a moving block (213) and a first connecting frame (412) connected with the first transition plate (411), the first connecting frame (412) comprises a first connecting bottom plate (4121) arranged on the first transition plate (411), two first side plates (4122) respectively fixed on two sides of the first connecting bottom plate (4121) and a first connecting top plate (4123) fixed between the upper surfaces of the two first side plates (4122), a first cover plate (612) is arranged between the first upper shell pieces (6112), two ends of the first cover plate (612) are arranged on the first shielding plate (517), and the first cover plate (612) penetrates through a space formed by the first connecting frame (412).

7. The jig placing platform of a grinder as set forth in claim 6, wherein: the first cover plate (612) is V-shaped, and reinforcing ribs (613) are arranged on the first cover plate (612).

8. The jig placing platform of a grinder according to claim 3, wherein: the outside of second dust cover (522) is equipped with second protection subassembly (62), second protection subassembly (62) are including fixing on bed frame (1) and being located second protective housing (621) of second dust cover (522) both sides, second protective housing (621) are including second lower shell piece (6211), second upper segment piece (6212) and the vertical piece of second (6213) of connecting between the two that are horizontal state.

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