Metal casting grinding and polishing device

Abstract

The utility model relates to the technical field of metal polishing, and discloses a metal casting grinding and polishing device which comprises a box body, the inner wall of the box body is fixedly connected with a mounting seat, the top of the mounting seat is fixedly connected with a double-shaft motor, two output ends of the double-shaft motor are both fixedly connected with couplings, and the couplings are fixedly connected with the box body. And the outer wall of the coupler on the left side is slidably connected with a polishing disc, the outer wall of the coupler on the right side is slidably connected with polishing cotton, the ends, away from each other, of the two couplings are in threaded connection with nuts, and a rotating seat is fixedly connected to the front side of the bottom of the outer wall of the box body. According to the polishing device, the mounting disc can rotate in multiple directions through linkage of the sliding rod, the rotating rod and the connecting rod, the sliding rod is manually controlled to enable the mounting disc to be close to the polishing disc for primary polishing, and therefore the problems that only one face can be polished after a metal casting is clamped and fixed, and the direction of the metal casting needs to be repeatedly adjusted for multi-aspect polishing are solved; and the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal polishing technical field especially relates to a metal casting polishing device. BACKGROUND

[0002] Polishing refers to the use of mechanical, chemical or electrochemical effects, the workpiece surface roughness reduces to obtain the processing method of bright, flat surface, is the use of polishing tool and abrasive particles or other polishing medium to the workpiece surface modification processing, polishing can not improve the workpiece size accuracy or geometric shape accuracy, but to get smooth surface or mirror surface luster.

[0003] Through the retrieval, China patent publication number is: CN210998072U, discloses a kind of metal casting processing and polishing device, including base, support and rotating rod, the base upper end is equipped with support, support lower end middle part is equipped with hydraulic cylinder, hydraulic cylinder lower end is equipped with polishing machine through machine base, polishing machine lower end is installed with connecting shaft, connecting shaft lower end is equipped with polishing disc, the polishing machine upper end machine base is equipped with protective cover, and protective cover fixedly connected polishing machine's machine base, the utility model uses, staff places metal casting between left clamping plate and right clamping plate, rotates handle and drives screw rod to rotate, screw rod drives left clamping plate to move to right clamping plate direction, it is convenient for the clamping of metal casting, starts polishing machine and drives connecting shaft and polishing disc to rotate, starts to polish metal casting, starts hydraulic cylinder and adjusts the distance between polishing disc and metal casting, dust and waste generated by polishing fall into collecting box through hopper, keep the neatness of workbench, but in actual use process, metal casting is clamped and fixed only one side can be polished, need to repeatedly adjust the direction of metal piece and polish in many aspects, waste a lot of time, reduce the practicability of device. UTILITARIAN CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a kind of metal casting polishing device, aims at improving the practicability of device in prior art metal casting is clamped and fixed only one side can be polished, need to repeatedly adjust the direction of metal piece and polish in many aspects, waste a lot of time.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of metal casting polishing device, including box, the inner wall of the box is fixedly connected with mounting seat, the top of the mounting seat is fixedly connected with double-shaft motor, the output end of the double-shaft motor is fixedly connected with shaft coupling, the outer wall of left shaft coupling is slidably connected with polishing disc, the outer wall of right shaft coupling is slidably connected with polishing cotton, the end of the two shaft couplings that are far away from each other is all threadedly connected with nut, the outer wall bottom of the box is fixedly connected with rotating seat, the inner wall top of the rotating seat is rotatably connected with connecting rod, the top of the connecting rod is rotatably connected with rotating rod, the inner wall of the rotating rod is rotatably connected with sliding rod, the rear end of the sliding rod is fixedly connected with mounting disc, the outer wall end of the mounting disc left and right sides is slidably connected with clamping plate, the inner wall of the mounting disc is rotatably connected with two-way threaded rod, the two clamping plates are all threadedly connected with the two-way threaded rod, the inner wall of the box is provided with dust collection mechanism.

[0006] Through the above technical scheme: the metal casting to be polished is placed on mounting disc, then two-way threaded rod is rotated to adjust the distance between the two clamping plates, so that the casting is stably fixed on the mounting disc, the double-shaft motor is started to drive the polishing disc and polishing cotton to rotate through the shaft coupling, when the sliding rod slides in the rotating rod, since the rotating rod is rotatably connected with the connecting rod, and the connecting rod is rotatably connected with the rotating seat, the sliding rod can drive the rotating rod to rotate around the connecting rod while sliding, so that the mounting disc rotates, the direction of the sliding rod is adjusted manually to make the mounting disc close to the polishing disc, and the metal casting is preliminarily polished, and the metal casting is taken down after preliminary polishing to be finely polished using the polishing surface.

[0007] Further description of the above technical scheme:

[0008] The dust collection mechanism includes rotating pipe, the rotating pipe is rotatably connected to the inner wall of the box, the bottom of the rotating pipe is fixedly connected with suction head, the inner wall of the rotating pipe is fixedly connected with hose, the front end of the hose is in communication with the suction head, the rear side of the outer wall of the box is fixedly connected with water tank, the other end of the hose is in communication with the water tank, the outer wall of the hose is in communication with fan in the middle, the top of the outer wall of the rotating pipe is fixedly connected with rotating ring, the bottom of the rotating ring is fixedly connected with a plurality of positioning rods around, a plurality of positioning holes are formed in the top of the box, and the positioning rods are respectively engaged with the corresponding positioning holes.

[0009] Through the technical scheme, the fan is started to make the air in the box start to flow, the dust generated by polishing and polishing is sucked into the suction head under the negative pressure, the dust sucked into the suction head is moved to the water tank through the hose communicated with the suction head, the air containing the dust is finally discharged into the water tank, the dust is effectively separated from the air, the air is purified, the rotating ring is lifted upward when the polishing disc is replaced to make the positioning rod disengage from the positioning hole, thereby rotating the suction head, the polishing disc is replaced, and after the rotating ring is reset, the positioning rod and the positioning hole are clamped to fix the suction head.

[0010] As a further description of the above technical scheme:

[0011] The front end left side of the box is rotatably connected with a protective cover one, and the front end right side of the box is rotatably connected with a protective cover two.

[0012] Through the technical scheme, the protective cover one and the protective cover two can block the foreign matters and further protect the safety of the operator.

[0013] As a further description of the above technical scheme:

[0014] The front side top of the outer wall of the box is fixedly connected with a mounting frame, and the front side of the outer wall of the mounting frame is fixedly connected with a display.

[0015] Through the technical scheme, the display is used for displaying the operating parameters of the device.

[0016] As a further description of the above technical scheme:

[0017] The right side top of the box is fixedly connected with a mounting box, and the inner wall of the mounting box is fixedly connected with an alarm lamp.

[0018] Through the technical scheme, when the device fails, the alarm bell rings to remind the staff to check and maintain.

[0019] As a further description of the above technical scheme:

[0020] The left end of the box is rotatably connected with a protective plate, the left side top of the outer wall of the protective plate is fixedly connected with a first fixing block, the left side top of the box is fixedly connected with a second fixing block, the inner wall of the second fixing block is slidably connected with a positioning pin, and the bottom end of the positioning pin penetrates through the first fixing block.

[0021] Through the technical scheme, the protective plate is rotatably connected with the left end of the box, the opening and closing action can be realized, and the combination of the first fixing block, the second fixing block and the positioning pin is used for fixing the position of the protective plate.

[0022] As a further description of the above technical scheme:

[0023] The rubber pad can prevent the clamping plate from directly contacting the surface of the casting to cause scratches, and the anti-skid blocks increase the friction between the clamping plate and the casting to prevent the casting from being displaced or loosened due to the force of the polishing disc during polishing.

[0024] Through the above technical scheme: the rubber pad can prevent the clamping plate from directly contacting the surface of the casting to cause scratches, and the anti-skid blocks increase the friction between the clamping plate and the casting to prevent the casting from being displaced or loosened due to the force of the polishing disc during polishing.

[0025] As a further description of the above technical scheme:

[0026] The outer wall right side of the box is fixedly connected with a controller, and the controller is electrically connected with the double-shaft motor, the mounting box and the fan

[0027] Through the above technical scheme: the controller is the control core of the whole device, and is electrically connected with the double-shaft motor, the alarm lamp and the fan, so as to realize accurate control and coordinated work of these devices.

[0028] The utility model has the advantages of:

[0029] 1、 in the utility model, the casting to be processed is placed on the mounting disc, the spacing between the clamping plates is adjusted by the bidirectional screw rod to realize stable fixing, after the double-shaft motor is started, the mounting disc can be rotated in multiple directions through the linkage of the sliding rod, the rotating rod and the connecting rod, the sliding rod is manually controlled to make the mounting disc close to the polishing disc for preliminary polishing, thereby solving the problem that the metal casting can only be polished on one side after being clamped and fixed, and the direction of the metal part needs to be repeatedly adjusted for polishing in multiple directions, and the practicality of the device is improved.

[0030] 2、 in the utility model, the air flow is formed in the box through the starting of the fan, the dust generated during polishing is sucked into the water tank through the suction head and the hose by the suction force, air purification is realized, the working environment and the health of the personnel are effectively maintained, and when the polishing disc needs to be replaced, the positioning rod is separated from the positioning hole by lifting the rotating ring, the suction head can be rotated to provide operation space, and the practicality and maintenance convenience of the whole device are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 A perspective view of a metal casting polishing device is provided for the utility model;

[0032] Figure 2 A partial structure schematic view of a metal casting polishing device is provided for the utility model;

[0033] Figure 3 A partial structure exploded view of a metal casting polishing device is provided for the utility model;

[0034] Figure 4A partial structure display drawing of the metal casting polishing device is provided in the utility model.

[0035] Figure 5 A dust collection mechanism schematic view of the metal casting polishing device is provided in the utility model.

[0036] Figure 6 A protective plate schematic view of the metal casting polishing device is provided in the utility model.

[0037] Legend:

[0038] 1, box body; 2, dust collection mechanism; 201, rotating pipe; 202, suction head; 203, hose; 204, water tank; 205, fan; 206, rotating ring; 207, positioning rod; 208, positioning hole; 3, mounting seat; 4, double-shaft motor; 5, coupling; 6, polishing disc; 7, polishing cotton; 8, nut; 9, rotating seat; 10, connecting rod; 11, rotating rod; 12, sliding rod; 13, mounting disc; 14, clamping plate; 15, two-way threaded rod; 16, protective cover one; 17, protective cover two; 18, mounting frame; 19, display; 20, mounting box; 21, alarm lamp; 22, protective plate; 23, fixed block one; 24, fixed block two; 25, positioning pin; 26, rubber pad; 27, anti-skid block; 28, controller. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0040] Reference Figure 1 , Figure 3 and Figure 4The utility model provides a kind of embodiment: a kind of metal casting polishing device, including box 1, as the shell of entire polishing device, play the role of protection inside component, prevent operator accidental contact to running component, the inner wall of box 1 is fixedly connected with mounting seat 3, for supporting and fixed double-shaft motor 4, the top of mounting seat 3 is fixedly connected with double-shaft motor 4, can simultaneously provide power for two directions of polishing work, the output end of double-shaft motor 4 is fixedly connected with shaft coupling 5, the outer wall of left shaft coupling 5 is slidably connected with polishing disc 6, for the preliminary polishing of metal casting, the outer wall of right shaft coupling 5 is slidably connected with polishing cotton 7, for the fine polishing of casting after preliminary processing by polishing disc 6, shaft coupling 5 connects the output end of double-shaft motor 4 with polishing disc 6 and polishing cotton 7, play the role of power transmission and torque, the end of two shaft couplings 5 far from each other is threadedly connected with nut 8, polishing disc 6 and polishing cotton 7 are firmly fixed on shaft coupling 5, the outer wall bottom front side of box 1 is fixedly connected with rotating seat 9, the inner wall top of rotating seat 9 is rotatably connected with connecting rod 10, rotating seat 9 provides rotating support point for connecting rod 10, the top of connecting rod 10 is rotatably connected with rotating rod 11, rotating rod 11 can rotate around connecting rod 10, linear motion of sliding rod 12 is converted into the circumferential motion of mounting disc 13, the inner wall of rotating rod 11 is rotatably connected with sliding rod 12, sliding rod 12 is used to adjust the distance between mounting disc 13 and polishing disc 6, the rear end of sliding rod 12 is fixedly connected with mounting disc 13, the outer wall end left and right sides of mounting disc 13 are slidably connected with clamping plate 14, the inner wall of mounting disc 13 is rotatably connected with two-way screw rod 15, two clamping plates 14 are threadedly connected with two-way screw rod 15, mounting disc 13 is used to fix metal casting, and the relative movement of the clamping plate 14 slidably connected to the left and right sides of its outer wall is realized by two-way screw rod 15, so as to clamp or release casting, the inner wall of box 1 is provided with dust collection mechanism 2;The left end of box 1 is rotatably connected with protection plate 22;The outer wall left side top of protection plate 22 is fixedly connected with fixed block one 23, the left side top of box 1 is fixedly connected with fixed block two 24, the inner wall of fixed block two 24 is slidably connected with positioning pin 25, the bottom end of positioning pin 25 penetrates fixed block one 23, protection plate 22 can realize opening and closing action by being rotatably connected with the left end of box 1, the combination of fixed block one 23 and fixed block two 24 and positioning pin 25 is used to fix the position of protection plate 22;The left side of the front end of box 1 is rotatably connected with protection cover one 16, the right side of the front end of box 1 is rotatably connected with protection cover two 17, in the process of polishing, casting contacts with polishing disc 6, and part of chippings or dust will fly out from front end, protection cover one 16 and protection cover two 17 can block these foreign matters, further protect the safety of operator;

[0041] Specifically, the metal casting to be polished is placed on the mounting disc 13, then the distance between the two clamping plates 14 is adjusted by rotating the two-way threaded rod 15, so that the casting is stably fixed on the mounting disc 13, the polishing disc 6 and the polishing cotton 7 are rotated by starting the double-shaft motor 4 through the shaft coupling 5, when the sliding rod 12 slides in the rotating rod 11, the sliding rod 12 can drive the rotating rod 11 to rotate around the connecting rod 10 because the rotating rod 11 is rotationally connected with the connecting rod 10, and the connecting rod 10 is rotationally connected with the rotating seat 9, thereby the mounting disc 13 is rotated, the metal casting is preliminarily polished by manually adjusting the direction of the sliding rod 12 to make the mounting disc 13 close to the polishing disc 6, after the preliminary polishing, the metal casting is taken down and polished in detail using the polishing surface, the nut 8 is used to fix the polishing disc 6 and the polishing cotton 7; the protection plate 22 is rotationally connected with the left end of the box body 1, and can realize opening and closing actions, the combination of the fixed block one 23, the fixed block two 24 and the positioning pin 25 is used to fix the position of the protection plate 22; during the polishing process, some debris or dust will fly out from the front end when the casting contacts with the polishing disc 6, the protection cover one 16 and the protection cover two 17 can block these foreign matters, further protecting the safety of the operator.

[0042] With reference to Figure 1 , Figure 2 and Figure 3The dust suction mechanism 2 comprises a rotating pipe 201 rotatably connected to the inner wall of the box body 1, the bottom of the rotating pipe 201 is fixedly connected with a suction head 202, the rotating pipe 201 is rotatably connected to the inner wall of the box body 1, thereby providing a rotatable supporting structure for the suction head 202, the position of the suction head 202 is close to the polishing area, so that the dust can be sucked near the source of dust generation, thereby reducing the diffusion of dust in the air, the inner wall of the rotating pipe 201 is fixedly connected with a hose 203, the hose 203 serves to transmit dust-containing air, the front end of the hose 203 is in communication with the suction head 202, the rear side of the outer wall of the box body 1 is fixedly connected with a water tank 204, when the dust-containing air enters the water tank 204 through the hose 203, the dust will contact with the water in the water tank 204, the water will absorb and wet the dust particles, so that the dust is deposited at the bottom of the water tank 204, thereby realizing the purification of air, the other end of the hose 203 is in communication with the water tank 204, the outer wall of the hose 203 is in communication with a fan 205 at the middle portion, when the fan 205 is started, a negative pressure will be formed in the hose 203, so that the suction head 202 generates suction force, thereby sucking the dust generated by polishing into the water tank 204, the outer wall of the rotating pipe 201 is fixedly connected with a rotating ring 206 at the top portion, a plurality of positioning rods 207 are fixedly connected to the bottom of the rotating ring 206, a plurality of positioning holes 208 are formed in the top of the box body 1, the plurality of positioning rods 207 are respectively engaged with the corresponding positioning holes 208, the positioning and fixing of the rotating pipe 201 are realized through the cooperation of the positioning rods 207 at the bottom and the positioning holes 208 at the top of the box body 1, when it is needed to adjust the angle of the suction head 202, the rotating ring 206 is moved upward, so that the positioning rods 207 are disengaged from the positioning holes 208, thereby rotating the rotating pipe 201;

[0043] Specifically, when the device starts polishing work, the fan 205 is started, under the suction force of the fan 205, the air in the box body 1 starts to flow, the dust generated by polishing is sucked into the suction head 202 under the negative pressure, the dust sucked into the suction head 202 moves to the water tank 204 through the hose 203 in communication therewith, the dust-containing air is finally discharged into the water tank 204, thereby effectively separating the dust from the air, realizing the purification of air, when the polishing disc 6 is replaced, the rotating ring 206 is lifted upward, so that the positioning rods 207 are disengaged from the positioning holes 208, thereby rotating the suction head 202, which is convenient for replacing the polishing disc 6, after the replacement is completed, the rotating ring 206 is reset, the positioning rods 207 are engaged with the positioning holes 208, thereby realizing the fixing of the suction head 202.

[0044] Referring to Figure 1 , Figure 2 and Figure 3The outer wall front side top of the box body 1 is fixedly connected with a mounting frame 18, the outer wall front side of the mounting frame 18 is fixedly connected with a display 19, the display 19 displays various information related to the polishing device, so that the operator can intuitively understand the running condition of the device, and the work parameters can be adjusted in time; the top right side of the box body 1 is fixedly connected with a mounting box 20, the inner wall of the mounting box 20 is fixedly connected with an alarm lamp 21, when the device appears an abnormal condition, the alarm lamp 21 will send an alarm signal to remind the operator; the adjacent side of the two clamping plates 14 is fixedly connected with rubber pads 26, the adjacent side of the two rubber pads 26 is fixedly connected with a plurality of anti-skid blocks 27, the rubber pad 26 can prevent the clamping plate 14 from being directly in contact with the surface of the casting to cause scratches, the anti-skid block 27 increases the friction between the clamping plate 14 and the casting, and displacement or loosening of the casting in the polishing process due to the action force of the polishing disc 6 is prevented; the outer wall right side of the box body 1 is fixedly connected with a controller 28, the controller 28 is electrically connected with the double-shaft motor 4, the mounting box 20 and the fan 205 respectively, the controller 28 is the control core of the whole device, is electrically connected with the double-shaft motor 4, the alarm lamp 21 and the fan 205 respectively, and accurate control and coordinated work of the devices are realized.

[0045] Specifically, the display 19 displays various information related to the polishing device, so that the operator can intuitively understand the running condition of the device, and the work parameters can be adjusted in time; when the device appears an abnormal condition, the alarm lamp 21 will send an alarm signal to remind the operator; the rubber pad 26 can prevent the clamping plate 14 from being directly in contact with the surface of the casting to cause scratches, the anti-skid block 27 increases the friction between the clamping plate 14 and the casting, and displacement or loosening of the casting in the polishing process due to the action force of the polishing disc 6 is prevented; the controller 28 is the control core of the whole device, is electrically connected with the double-shaft motor 4, the alarm lamp 21 and the fan 205 respectively, and accurate control and coordinated work of the devices are realized.

[0046] Working principle: before using the device, first of all, the metal casting to be polished is placed on the mounting disc 13, then the two- way threaded rod 15 is rotated to adjust the distance between the two clamping plates 14, so that the casting is stably fixed on the mounting disc 13, the double shaft motor 4 is started to drive the polishing disc 6 and the polishing cotton 7 to rotate through the shaft coupling 5, when the sliding rod 12 slides in the rotating rod 11, since the rotating rod 11 is rotationally connected with the connecting rod 10, and the connecting rod 10 is rotationally connected with the rotating seat 9, so the sliding rod 12 can drive the rotating rod 11 to rotate around the connecting rod 10 when sliding, and then the mounting disc 13 is rotated, the mounting disc 13 is adjusted to be close to the polishing disc 6 by manually adjusting the direction of the sliding rod 12, so that the metal casting is preliminarily polished, and after preliminary polishing, the metal casting is taken down and polished in detail using the polishing surface; and by starting the fan 205, under the suction of the fan 205, the air in the box body 1 starts to flow, the dust generated by polishing is sucked into the suction head 202 under the suction of negative pressure, the dust sucked into the suction head 202 moves to the water tank 204 through the hose 203 communicated with the suction head 202, and the air containing dust is finally discharged into the water tank 204, effectively separating the dust from the air to purify the air, when replacing the polishing disc 6, the rotating ring 206 is lifted upward to make the positioning rod 207 disengage from the positioning hole 208, so that the suction head 202 is rotated, and the polishing disc 6 is replaced, after replacement, the rotating ring 206 is reset, the positioning rod 207 is clamped with the positioning hole 208, and the suction head 202 is fixed.

[0047] Finally, it should be pointed out that: the above only for preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A device for grinding and polishing metal castings, comprising a box (1), characterized in that: The inner wall of the box (1) is fixedly connected with a mounting seat (3), the top of the mounting seat (3) is fixedly connected with a double-shaft motor (4), both output ends of the double-shaft motor (4) are fixedly connected with a shaft coupling (5), the outer wall of the left shaft coupling (5) is slidably connected with a polishing disc (6), the outer wall of the right shaft coupling (5) is slidably connected with polishing cotton (7), the distal ends of the two shaft couplings (5) are threadedly connected with nuts (8), the outer wall bottom front side of the box (1) is fixedly connected with a rotating seat (9), the inner wall top of the rotating seat (9) is rotatably connected with a connecting rod (10), the top of the connecting rod (10) is rotatably connected with a rotating rod (11), the inner wall of the rotating rod (11) is rotatably connected with a sliding rod (12), the rear end of the sliding rod (12) is fixedly connected with a mounting disc (13), the outer wall ends of the mounting disc (13) are slidably connected with clamping plates (14), the inner wall of the mounting disc (13) is rotatably connected with a bidirectional threaded rod (15), both clamping plates (14) are threadedly connected with the bidirectional threaded rod (15), and the inner wall of the box (1) is provided with a dust suction mechanism (2).

2. A device for polishing metal castings as claimed in claim 1, wherein: The dust suction mechanism (2) comprises a rotating pipe (201), the rotating pipe (201) is rotatably connected to the inner wall of the box (1), the bottom of the rotating pipe (201) is fixedly connected with a suction head (202), the inner wall of the rotating pipe (201) is fixedly connected with a hose (203), the front end of the hose (203) is in communication with the suction head (202), the rear side of the outer wall of the box (1) is fixedly connected with a water tank (204), the other end of the hose (203) is in communication with the water tank (204), the outer wall of the hose (203) is in communication with a fan (205) in the middle, the outer wall top of the rotating pipe (201) is fixedly connected with a rotating ring (206), the bottom of the rotating ring (206) is fixedly connected with a plurality of positioning rods (207) around, the top of the box (1) is provided with a plurality of positioning holes (208), and the plurality of positioning rods (207) are respectively clamped with the corresponding positioning holes (208).

3. A device for polishing metal castings as claimed in claim 1, wherein: The front left side of the box (1) is rotatably connected with a protective cover one (16), and the front right side of the box (1) is rotatably connected with a protective cover two (17).

4. The apparatus for polishing metal castings of claim 1 wherein: The outer wall front top of the box (1) is fixedly connected with a mounting frame (18), and the outer wall front of the mounting frame (18) is fixedly connected with a display (19).

5. The apparatus for polishing metal castings of claim 1 wherein: The top right side of the box (1) is fixedly connected with a mounting box (20), and the inner wall of the mounting box (20) is fixedly connected with an alarm lamp (21).

6. A device for polishing metal castings as defined in claim 1, wherein: The left end of the box (1) is rotatably connected with a protective plate (22), the outer wall left top of the protective plate (22) is fixedly connected with a fixed block one (23), the left top of the box (1) is fixedly connected with a fixed block two (24), the inner wall of the fixed block two (24) is slidably connected with a positioning pin (25), and the bottom end of the positioning pin (25) penetrates the fixed block one (23).

7. The apparatus of claim 1, wherein: The adjacent side of two clamps (14) is fixedly connected with rubber pads (26), and the adjacent side of two rubber pads (26) is fixedly connected with a plurality of anti-skid blocks (27).

8. The apparatus of claim 1, wherein: The outer wall right side of the box (1) is fixedly connected with a controller (28), and the controller (28) is electrically connected with the double-shaft motor (4), the mounting box (20) and the fan (205) respectively.

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