CN115284100A

CN115284100A - Polishing device for hole opening part of brake disc

Info

Publication number: CN115284100A
Application number: CN202210792098.3A
Authority: CN
Inventors: 陈涛
Original assignee: Jiangxi Zhangshu Fuling Internal Combustion Engine Accessories Co ltd
Current assignee: Jiangxi Zhangshu Fuling Internal Combustion Engine Accessories Co ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2022-11-04
Anticipated expiration: 2042-07-07

Abstract

The invention relates to a polishing device, in particular to a polishing device for a brake disc opening part. The invention provides a polishing device for an opening part of a brake disc, which can clean debris on the brake disc. The invention provides a polishing device for a hole opening part of a brake disc, which comprises a base, a sliding rail, a first sliding block, a placing plate and the like; the base top intermediate position is connected with the slide rail, and the equal slidingtype in slide rail left and right sides is connected with first sliding block, is connected with between two first sliding blocks and places the board. The staff starts the polisher, makes polisher and brake disc trompil position contact polish, and is fixed to the brake disc through the fixed rod, makes the brake disc be difficult for dropping at the in-process of polishing, can clear up the piece in the brake disc trompil position through the brush to prevent that the brake disc from scraping flower and damage at subsequent deposit in-process.

Description

Polishing device for hole opening part of brake disc

Technical Field

The invention relates to a polishing device, in particular to a polishing device for a brake disc opening part.

Background

The brake disc is a round disc, the brake disc can rotate along with a vehicle when the vehicle rotates, the brake disc is clamped to play a role in speed reduction or parking when the vehicle brakes, the brake disc needs to be holed in the brake disc manufacturing process, so that a radiating effect is achieved, and after the brake disc is holed, burrs at the holed part of the brake disc need to be removed by using a grinding machine.

Patent grant publication No. CN 210550028U's patent has announced a locomotive braking brake disc edge grinding device, relates to locomotive braking technical field, and it includes the bottom plate, the upper surface joint of bottom plate has the bearing, it has drive arrangement to cup joint in the bearing, drive arrangement's top fixedly connected with connecting plate. Although this equipment can polish the brake disc through the piece of polishing, when the brake disc after the completion of polishing, there is the piece in the brake disc surface, makes the brake disc in the follow-up in-process of depositing, piece looks mutual friction on two or more brake discs, leads to the scratch to appear in the brake disc surface, and when the scratch on brake disc surface was more, when making follow-up staff use the brake disc, certain potential safety hazard had.

Therefore, a grinding device for the hole-opening part of the brake disc, which can clean up the scraps on the brake disc, needs to be designed.

Disclosure of Invention

In order to overcome the defect that in the prior art, after the brake disc is polished, fragments exist on the surface of the brake disc, so that the fragments on two or more brake discs rub against each other in the subsequent storage process of the brake disc, and the surface of the brake disc is scratched, the invention has the technical problems that: the polishing device for the hole opening part of the brake disc is capable of cleaning up scraps on the brake disc.

The technical implementation scheme of the invention is as follows: the utility model provides a braking brake disc trompil position grinding device, the on-line screen storage device comprises a base, a slide rail, first sliding block, place the board, first motor, first lead screw, the guide bar, a carriage, the polisher, clamping mechanism and clearance mechanism, base top intermediate position is connected with the slide rail, the equal sliding connection of slide rail left and right sides has first sliding block, be connected with between two first sliding blocks and place the board, first motor is installed to base left part rear side, the output shaft of first motor has first lead screw through the coupling joint, base left part front side is connected with the guide bar, be connected with first carriage between guide bar and the first lead screw, first carriage front side and guide bar sliding type are connected, first carriage rear portion and first lead screw threaded connection, first carriage mid-mounting has the polisher, the polisher is used for polishing brake disc trompil position, all be equipped with on two first sliding blocks and be used for pressing from both sides tight clamping mechanism to the brake disc, the base top is equipped with and is used for clearing up clastic clearance mechanism.

Further, clamping mechanism is including the second carriage, the dead lever, first elastic component, the head rod, the stopper, second sliding block and second elastic component, it is connected with the head rod all to all slidingly on two first sliding blocks, one side that two head rods are close to each other all is connected with the second carriage, equal even interval is connected with the dead lever on two second carriages, the dead lever slidingtype runs through in the second carriage, all the cover is equipped with first elastic component on every dead lever, first elastic component both ends all are connected with the second carriage, one side that two head rods kept away from each other all is connected with the stopper, two second carriage bottoms all are connected with the second sliding block, two second sliding blocks all with place the board slidingtype and be connected, it is equipped with the second elastic component all to overlap on two head rods, second elastic component one end is connected with the second carriage, the other end is connected with the stopper.

Further, clearance mechanism is including mount, first fixed plate and brush, and both sides all are connected with the mount around the base top, are connected with first fixed plate between two mounts, and the even interval connection in first fixed plate bottom has the brush, and the brush is used for clearing up the piece.

Further, the movable mechanism is used for moving the placing plate and comprises a second motor, a connecting block, a second lead screw and a third sliding block, the second motor is installed on the right portion of the base, the connecting block is connected to the left side in the sliding rail, an output shaft of the second motor is connected with the second lead screw through a coupling, the left side of the second lead screw is connected with the connecting block in a rotating mode, the bottom of the placing plate is connected with the third sliding block, and the third sliding block is in threaded connection with the second lead screw.

Further, still including being used for the spacing stop gear to the stopper, stop gear is including the fixed block, the third lead screw, gag lever post and second fixed plate, the fixed block has four groups, the fixed block quantity of every group is two, base top left side is equal front and back symmetrical formula and is connected with two sets of fixed blocks, equal rotary type is connected with the third lead screw between two fixed blocks of every group of right side, all be connected with the gag lever post between two fixed blocks of every group of left side, be connected with the second fixed plate between the third lead screw of front side and the gag lever post, also be connected with the second fixed plate between the third lead screw of rear side and the gag lever post, second fixed plate left side and gag lever post slidingtype are connected, second fixed plate right side and third lead screw threaded connection, two second fixed plate inwardly moved can contact with the stopper, head rod left movement can contact with the second fixed plate.

The grinding machine comprises a base, a grinding machine body, a base, a water tank, a water inlet pipe, a second support frame, a fixing pipe, a one-way water inlet valve, a one-way water outlet valve, a sliding rod and a third elastic piece, wherein the base is connected with the first support frame at the top, the water tank is connected to the upper portion of the first support frame, the water inlet pipe is connected to the rear side of the upper portion of the water tank and communicated with the rear side of the upper portion of the water tank, the second support frame is connected to the right side of the top of the water tank, the fixing pipe is connected to the left side of the bottom in the water tank, the one-way water inlet valve is connected to the right side of the lower portion of the fixing pipe and communicated with the lower portion of the fixing pipe, the sliding rod is connected with the water tank and the fixing pipe in a sliding mode respectively, the third elastic piece is sleeved on the sliding rod, and two ends of the third elastic piece are connected with the second support frame and the sliding rod respectively.

Further, still including the sled mechanism that is used for sled to move the slide bar, sled mechanism is including link, second connecting rod and swing board, and both sides all are connected with the link around the water tank, are connected with the second connecting rod between two link left parts, and the last rotation type of second connecting rod is connected with swing board, swing board right side and slide bar sliding connection, first carriage downstream can with swing board left side contact.

Furthermore, the water tank is made of stainless steel.

The invention has the beneficial effects that: 1. the staff starts the polisher, makes polisher and brake disc trompil position contact polish, and is fixed to the brake disc through the fixed rod, makes the brake disc be difficult for dropping at the in-process of polishing, can clear up the piece in the brake disc trompil position through the brush to prevent that the brake disc from scraping flower and damage at subsequent deposit in-process.

2. The staff starts the second motor, conveniently places the board and drives the brake disc and remove.

3. Two second fixed plates can carry on spacingly to the stopper, prevent that the polisher from when polishing brake disc trompil position, the head rod appears rocking to influence the polisher and polish brake disc trompil position.

4. One-way outlet valve can discharge liquid for on exhaust liquid sprays the polisher, makes liquid cool down the polisher, prevents to use under the environment of high temperature for a long time because of the polisher, leads to damaging.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a partial perspective view of the present invention.

Fig. 3 is a schematic view of a first partially assembled configuration of the clamping mechanism of the present invention.

Fig. 4 is a schematic view of a second partially assembled configuration of the clamping mechanism of the present invention.

Fig. 5 is a schematic perspective view of the cleaning mechanism of the present invention.

Fig. 6 is a schematic view of a first partial body structure of the moving mechanism of the present invention.

Fig. 7 is a schematic diagram of a second partial body structure of the moving mechanism of the present invention.

Fig. 8 is a schematic perspective view of the limiting mechanism of the present invention.

Fig. 9 is a schematic partial perspective view of the refrigeration mechanism of the present invention.

Fig. 10 is a partial perspective sectional structural schematic view of the refrigeration mechanism of the present invention.

Fig. 11 is a schematic view of a first partially assembled prying mechanism according to the invention.

Fig. 12 is a schematic view of a second partially assembled structure of the prying mechanism of the present invention.

Reference numerals: 1_ base, 2_ slide rail, 3_ first slide block, 4_ placing plate, 5_ first motor, 6_ first lead screw, 7_ guide bar, 8_ first slide frame, 9_ sander, 10_ clamping mechanism, 101_ second slide frame, 102_ fixing bar, 103_ first elastic member, 104_ first connecting bar, 105_ stopper, 106_ second slide block, 107_ second elastic member, 11_ cleaning mechanism, 111_ fixing frame, 112_ first fixing plate, 113_ brush, 12_ moving mechanism, 121_ second motor, 122_ connecting block, 123_ second lead screw, 124_ third elastic member, 13_ limiting mechanism, 131_ fixing block, 132_ third lead screw, 133_ limiting bar, 134_ second fixing plate, 14_ refrigerating mechanism, 141_ first supporting frame, 142_ water tank, 143_ water inlet pipe, 144_ second supporting frame, 145_ fixing pipe, 146_ one-way, 147_ one-way outlet valve, 148_ sliding bar, 149_ third elastic member, 149_ elastic member, 15_ first supporting frame, water inlet valve, 143_ sliding bar, and second connecting bar 153.

Detailed Description

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

Example 1

As shown in fig. 1 to 5, a polishing device for brake disc opening portions comprises a base 1, slide rails 2, first slide blocks 3, a placing plate 4, a first motor 5, first lead screws 6, guide rods 7, a first carriage 8, a polishing machine 9, a clamping mechanism 10 and a cleaning mechanism 11, wherein the slide rails 2 are fixedly connected to the middle of the top of the base 1 through bolts, the first slide blocks 3 are slidably connected to the left and right sides of the slide rails 2, the placing plate 4 is fixedly connected between the two first slide blocks 3 through bolts, the first motor 5 is installed on the rear side of the left portion of the base 1 through bolts, an output shaft of the first motor 5 is connected to the first lead screws 6 through couplings, the guide rods 7 are welded to the front side of the left portion of the base 1, the first carriage 8 is connected between the guide rods 7 and the first lead screws 6, the front side of the first carriage 8 is slidably connected to the guide rods 7, the rear portion of the first carriage 8 is in threaded connection with the first lead screws 6, the polishing machine 9 is installed in the middle of the first carriage 8 through bolts, the polishing machine 9 is used for polishing brake disc opening portions, the two first slide blocks 3 are provided with the clamping mechanism 10, and the top of the base 1 is provided with the cleaning mechanism 11.

As shown in fig. 1, fig. 3 and fig. 4, the clamping mechanism 10 includes a second carriage 101, a fixing rod 102, a first elastic member 103, a first connecting rod 104, a limiting block 105, a second sliding block 106 and a second elastic member 107, the two first sliding blocks 3 are all slidably connected to the first connecting rod 104, one sides of the two first connecting rods 104 close to each other are all fixedly connected to the second carriage 101 through bolts, the two second carriages 101 are all uniformly and intermittently connected to the fixing rod 102, the fixing rod 102 slidably penetrates through the second carriage 101, each fixing rod 102 is sleeved with the first elastic member 103, two ends of the first elastic member 103 are all connected to the second carriage 101, the two sides of the two first connecting rods 104 far away from each other are all welded with the limiting block 105, the bottoms of the two second carriages 101 are all welded with the second sliding blocks 106, the two second sliding blocks 106 are all slidably connected to the placing plate 4, the two first connecting rods 104 are all sleeved with the second elastic member 107, one end of the second elastic member 107 is connected to the second carriage 101, and the other end is connected to the limiting block 105.

As shown in fig. 1 and 5, the cleaning mechanism 11 includes a fixing frame 111, a first fixing plate 112 and a brush 113, the fixing frame 111 is fixedly connected to the front and rear sides of the top of the base 1 through bolts, the first fixing plate 112 is fixedly connected between the two fixing frames 111 through bolts, the brush 113 is fixedly connected to the bottom of the first fixing plate 112 through bolts at uniform intervals, and the brush 113 is used for cleaning up debris.

When an operator needs to polish the perforated part of the brake disc, the operator places the brake disc between the fixing rods 102 on the front and rear sides, so that the fixing rods 102 on the front and rear sides move outwards to fix the brake disc, further the first elastic member 103 is compressed, the fixing rods 102 also drive the second sliding frame 101 to move while moving outwards, so that the second elastic member 107 is compressed, then the operator pushes the placing plate 4 and the first sliding block 3 leftwards to align the brake disc with the polisher 9, the brush 113 can clean debris on the perforated part of the brake disc while pushing the placing plate 4 leftwards, so that the polisher 9 can polish the perforated part of the brake disc better, after the brake disc is aligned with the polisher 9, the operator starts the polisher 9 and the first motor 5, so that the output shaft of the first motor 5 drives the first lead screw 6 to rotate through the coupler, the first sliding frame 8 drives the grinding machine 9 to move downwards, so that the grinding machine 9 rotates, when the grinding machine 9 is in contact with the brake disc opening part, the brake disc opening part can be ground, after the brake disc opening part is ground, an operator controls the output shaft of the first motor 5 to reversely drive the first screw rod 6 to rotate, the first sliding frame 8 and the grinding machine 9 move upwards to reset, after the first sliding frame 8 and the grinding machine 9 reset, the operator closes the first motor 5 and the grinding machine 9 to stop the first motor 5 and the grinding machine 9 from operating, then the operator moves the placing plate 4 and the first sliding block 3 to reset in the right direction, when the brake disc moves in the right direction, the brush 113 cleans debris on the brake disc opening part again, then the operator takes out the brake disc, and after the brake disc is taken out, first elastic component 103 drives dead lever 102 and resets, and second elastic component 107 drives second carriage 101 and head rod 104 and resets, so, dead lever 102 through both sides around fixes the brake disc, make the brake disc be difficult for dropping at the in-process of polishing, can clear up the piece in the brake disc trompil position through brush 113, thereby prevent the brake disc at subsequent in-process of depositing, piece looks mutual friction on two or more brake discs, lead to the brake disc to scrape the flower and damage.

Example 2

As shown in fig. 1, 6 and 7, based on embodiment 1, the mobile device further includes a moving mechanism 12, the moving mechanism 12 includes a second motor 121, a connecting block 122, a second lead screw 123 and a third sliding block 124, the second motor 121 is mounted on the right portion of the base 1 through a bolt, the connecting block 122 is welded on the left side in the slide rail 2, an output shaft of the second motor 121 is connected with the second lead screw 123 through a coupling, the left side of the second lead screw 123 is rotatably connected with the connecting block 122, the third sliding block 124 is welded on the bottom of the placing plate 4, and the third sliding block 124 is in threaded connection with the second lead screw 123.

When the worker needs to move the placing plate 4 and the first sliding block 3, the worker starts the second motor 121, so that the output shaft of the second motor 121 drives the second lead screw 123 to rotate through the coupler, and further the third sliding block 124 drives the placing plate 4 and the first sliding block 3 to move leftward, after the opening part of the brake disc is aligned with the polisher 9, the worker closes the second motor 121, so that the second motor 121 does not operate any more, when the worker needs to move the placing plate 4 and the first sliding block 3 rightward, the worker controls the output shaft of the second motor 121 to reversely drive the second lead screw 123 to rotate, so that the third sliding block 124 drives the placing plate 4 and the first sliding block 3 to move rightward to reset, and after the placing plate 4 resets, the worker closes the second motor 121, so that the second motor 121 does not operate any more, and by starting the second motor 121, the placing plate 4 is convenient to drive the brake disc to move.

As shown in fig. 1 and 8, the positioning device further comprises a limiting mechanism 13, the limiting mechanism 13 comprises four groups of fixing blocks 131, a third screw 132, two groups of limiting rods 133 and a second fixing plate 134, the number of the fixing blocks 131 in each group is two, two groups of fixing blocks 131 are symmetrically welded on the left side and the front side of the top of the base 1, the third screw 132 is rotatably connected between the two fixing blocks 131 in each group on the right side, the limiting rod 133 is connected between the two fixing blocks 131 in each group on the left side, the second fixing plate 134 is connected between the third screw 132 and the limiting rod 133 on the front side, the second fixing plate 134 is also connected between the third screw 132 and the limiting rod 133 on the rear side, the left side of the second fixing plate 134 is slidably connected with the limiting rod 133, the right side of the second fixing plate 134 is threadedly connected with the third screw 132, the two second fixing plates 134 can be contacted with the limiting block 105 when moving inwards, and the first connecting rod 104 can be contacted with the second fixing plate 134 when moving leftwards.

When brake disc trompil position aligns with polisher 9, the staff rotates two third lead screw 132, make two second fixed plate 134 inwards move, when two second fixed plate 134 and stopper 105 contact, second fixed plate 134 can carry on spacingly to stopper 105, prevent the in-process that polisher 9 polished brake disc trompil position, head rod 104 appears rocking, and then make polisher 9 relatively poor to brake disc trompil position polishing effect, when the staff need move right place board 4, staff reverse rotation two third lead screw 132, make two second fixed plate 134 outwards move and when stopper 105 breaks away from, and then place board 4 and can move right, so, can carry out spacingly to stopper 105 through two second fixed plate 134, prevent polisher 9 from polishing brake disc trompil position, head rod 104 appears rocking, thereby influence polisher 9 and polish brake disc trompil position.

As shown in fig. 1, 9 and 10, the refrigeration device 14 further includes a refrigeration mechanism 14, the refrigeration mechanism 14 includes a first support frame 141, a water tank 142, a water inlet pipe 143, a second support frame 144, a fixed pipe 145, a one-way water inlet valve 146, a one-way water outlet valve 147, a sliding rod 148 and a third elastic member 149, the top of the base 1 is fixedly connected with the first support frame 141 through bolts, the upper portion of the first support frame 141 is fixedly connected with the water tank 142 through bolts, the rear side of the upper portion of the water tank 142 is welded with the water inlet pipe 143 and communicated with the water tank, the right side of the top of the water tank 142 is welded with the second support frame 144, the left side of the water tank 142 is welded with the second support frame 144, the fixed pipe 145 is welded with the left side of the bottom of the water tank 142, the fixed pipe 145 is fixedly connected with the one-way water inlet valve 146 through bolts and communicated with the lower side of the fixed pipe 145 through bolts, the left side of the fixed pipe 145 is connected with the sliding rod 148 in a sliding manner, the sliding rod 148 is respectively connected with the water tank 142 and the fixed pipe 145 in a sliding rod 148 in a sliding manner, the sliding rod 148 is sleeved with the third elastic member 149, and two ends of the third elastic member 149 are respectively connected with the second support frame 144 and the sliding rod 148.

As shown in fig. 1, 11 and 12, the water tank further comprises a prying mechanism 15, the prying mechanism 15 comprises a connecting frame 151, a second connecting rod 152 and a swinging plate 153, the connecting frame 151 is fixedly connected to the front side and the rear side of the water tank 142 through bolts, the second connecting rod 152 is welded between the left parts of the two connecting frames 151, the swinging plate 153 is rotatably connected to the second connecting rod 152, the right side of the swinging plate 153 is slidably connected with the sliding rod 148, and the first sliding frame 8 moves downwards and can contact with the left side of the swinging plate 153.

Before the worker uses the device, the worker pours the liquid into the water tank 142 through the water inlet pipe 143, after the water tank 142 stores the liquid, the worker stops pouring the liquid, and contacts the left side of the swing plate 153 when the first carriage 8 moves downward, so that the right side of the swing plate 153 rotates upward to drive the sliding rod 148 to move, so that the third elastic member 149 is compressed, the sliding rod 148 slides rightward on the right side of the swing plate 153 while the right side of the swing plate 153 rotates upward, after the sliding rod 148 moves upward, the liquid in the water tank 142 is sucked into the fixed pipe 145 through the one-way water inlet valve 146, under the action of the one-way water outlet valve 147, the liquid to be discharged into the fixed pipe 145 is prevented from being discharged through the one-way water outlet valve 147, while the first carriage 8 moves upward, the third elastic member 149 drives the sliding rod 148 to move downward, so that the right side of the swing plate 153 rotates downward to be reset, and the left side of the swing plate 153 rotates upward, while the sliding rod 148 moves downward, while the liquid in the one-way water outlet valve 147 is discharged through the one-way water outlet pipe 145, the one-way water inlet valve 146, so that the liquid in the water tank 142 is prevented from being discharged into the water tank 142 for a long time, and is not easily damaged after the stainless steel grinding machine 9, and the stainless steel grinding machine is used, and the stainless steel grinding machine is durable.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The utility model provides a braking brake disc trompil position grinding device, including base (1), slide rail (2), first sliding block (3), place board (4), first motor (5), first lead screw (6), guide bar (7), first carriage (8) and polisher (9), base (1) top intermediate position is connected with slide rail (2), the equal sliding type in slide rail (2) left and right sides is connected with first sliding block (3), be connected with between two first sliding blocks (3) and place board (4), first motor (5) are installed to base (1) left part rear side, the output shaft of first motor (5) has first lead screw (6) through the coupling joint, base (1) left part front side is connected with guide bar (7), be connected with between guide bar (7) and first lead screw (6) first carriage (8), first carriage (8) front side and guide bar (7) sliding type are connected, first carriage (8) rear portion and first lead screw (6) threaded connection, first carriage (8) mid-mounting has polisher (9), be used for the polisher (9), characterized by the trompil, the trompil is polished: the brake disc cleaning device is characterized by further comprising a clamping mechanism (10) and a cleaning mechanism (11), wherein the clamping mechanism (10) used for clamping the brake disc is arranged on each of the two first sliding blocks (3), and the cleaning mechanism (11) used for cleaning debris is arranged at the top of the base (1).

2. The brake disc opening part grinding device according to claim 1, characterized in that: clamping mechanism (10) is including second carriage (101), dead lever (102), first elastic component (103), first connecting rod (104), stopper (105), second sliding block (106) and second elastic component (107), equal sliding connection has first connecting rod (104) on two first sliding blocks (3), one side that two first connecting rod (104) are close to each other all is connected with second carriage (101), equal even interval is connected with dead lever (102) on two second carriage (101), dead lever (102) slidingtype runs through in second carriage (101), all overlap on every dead lever (102) and be equipped with first elastic component (103), first elastic component (103) both ends all are connected with second carriage (101), one side that two first connecting rod (104) kept away from each other all is connected with stopper (105), two second carriage (101) bottoms all are connected with second sliding block (106), two second sliding blocks (106) all with place board (4) slidingtype and be connected, all overlap on two first connecting rod (104) and be equipped with second elastic component (107), one end of second sliding block (107) is connected with the second carriage (105), the other end is connected with the stopper (105).

3. The brake disc opening part grinding device according to claim 2, characterized in that: clearance mechanism (11) are connected with first fixed plate (112) including mount (111), first fixed plate (112) and brush (113) around base (1) top all, and both sides are connected with mount (111) between two mount (111), and first fixed plate (112) bottom is even to be connected with brush (113) at interval, and brush (113) are used for clearing up the piece.

4. The brake disc opening part grinding device according to claim 3, characterized in that: the novel electric heating plate is characterized by further comprising a moving mechanism (12) used for moving the placing plate (4), the moving mechanism (12) comprises a second motor (121), a connecting block (122), a second screw rod (123) and a third sliding block (124), the second motor (121) is installed on the right portion of the base (1), the connecting block (122) is connected to the left side in the sliding rail (2), an output shaft of the second motor (121) is connected with the second screw rod (123) through a coupler, the left side of the second screw rod (123) is connected with the connecting block (122) in a rotating mode, the third sliding block (124) is connected to the bottom of the placing plate (4), and the third sliding block (124) is in threaded connection with the second screw rod (123).

5. The brake disc opening part grinding device according to claim 4, characterized in that: the limiting mechanism (13) is used for limiting the limiting block (105), the limiting mechanism (13) comprises fixing blocks (131), third screw rods (132), limiting rods (133) and second fixing plates (134), the fixing blocks (131) are four groups, the number of the fixing blocks (131) in each group is two, two groups of fixing blocks (131) are symmetrically connected to the front and back of the left side of the top of the base (1), the third screw rods (132) are connected between the two fixing blocks (131) in each group on the right side in a rotating mode, the limiting rods (133) are connected between the two fixing blocks (131) in each group on the left side, the second fixing plates (134) are connected between the third screw rods (132) and the limiting rods (133) on the front side in a threaded mode, the second fixing plates (134) are connected between the third screw rods (132) and the limiting rods (133) on the rear side in a rotating mode, the left sides of the second fixing plates (134) are connected with the limiting rods (133) in a sliding mode, the right sides of the second fixing plates (134) are connected with the third screw rods (132) in a threaded mode, the two second fixing plates (134) can be in contact with the limiting block (105) inwards, and the connecting rods (104) can be in contact with the left side.

6. The brake disc opening part grinding device according to claim 5, characterized in that: the refrigerator is characterized by further comprising a refrigerating mechanism (14) used for refrigerating the grinding machine (9), wherein the refrigerating mechanism (14) comprises a first support frame (141), a water tank (142), a water inlet pipe (143), a second support frame (144), a fixed pipe (145), a one-way water inlet valve (146), a one-way water outlet valve (147), a sliding rod (148) and a third elastic piece (149), the top of the base (1) is connected with the first support frame (141), the upper portion of the first support frame (141) is connected with the water tank (142), the rear side of the upper portion of the water tank (142) is connected with the water inlet pipe (143) and communicated with the water tank, the right side of the top of the water tank (142) is connected with the second support frame (144), the left side of the inner bottom of the water tank (142) is connected with the fixed pipe (145), the right side of the lower portion of the fixed pipe (145) is connected with the one-way water inlet valve (146) and communicated with the lower portion of the fixed pipe (145), the one-way water outlet valve (147) is connected with the left side of the lower portion of the fixed pipe (145) in a communicated with the water tank, the left portion of the second support frame (144) is connected with the sliding rod (148) in a sliding rod (148), the sliding rod (148) is connected with the sliding rod (149), and the third elastic piece (149) is sleeved on the sliding rod (148), and connected with the second support frame (144) and the second elastic piece (148).

7. The brake disc opening part grinding device according to claim 6, characterized in that: still including prying mechanism (15) that is used for prying slide bar (148), prying mechanism (15) is including link (151), second connecting rod (152) and swing board (153), both sides all are connected with link (151) around water tank (142), be connected with second connecting rod (152) between two link (151) left parts, the last rotation type of second connecting rod (152) is connected with swing board (153), swing board (153) right side and slide bar (148) sliding connection, first carriage (8) move down can with swing board (153) left side contact.

8. The brake disc opening part grinding device according to claim 7, characterized in that: the water tank (142) is made of stainless steel.