A magnetic clamping device for polishing motor housing

Abstract

The present invention relates to the technical field of motor housing polishing and clamping, and specifically to a magnetic clamping device for motor housing polishing, comprising a mounting frame, a driving mechanism 1 mounted on the mounting frame, a driving mechanism 2 mounted on the driving mechanism 1, and after the motor housing to be polished is placed on the top of the electromagnetic suction cup, the motor housing itself is initially aligned by moving the positioning plate, and after alignment, the cylinder 3 is retracted, at which time the cylinder 3 drives the support rod to descend, and when the support rod descends, multiple connecting rods are simultaneously squeezed, the angles between the multiple connecting rods and the fixed shell become smaller, multiple sliding rods extend from the inside of the fixed shell, and the outer walls of the expansion plates of the multiple arc-shaped structures contact the inner walls of the motor housing to be polished, thereby assisting in clamping and positioning, so that the motor housing is in the center position of the electromagnetic suction cup and is subjected to uniform force. When the electromagnetic suction cup is powered on, it generates magnetic force, which sucks and fixes the motor housing, completes the clamping of the motor housing, improves stability during polishing, and achieves precise polishing.

Description

Technical Field

[0001] The invention relates to the technical field of motor housing polishing and clamping, in particular to a magnetic clamping device for polishing a motor housing. Background Art

[0002] The motor casing is an important component of the motor. It wraps around the outside of the motor's internal structure (such as the stator, rotor, winding, etc.); when the motor is running, the internal components rotate at high speed, and the motor casing can effectively prevent external objects (such as dust, debris, tools, etc.) from entering the motor. The motor casing is generally polished with a polishing machine, and the polishing machine generally uses a belt polisher for polishing. When polishing the motor casing, the motor casing is generally clamped and fixed by an electromagnetic suction cup, and then sent between two sanding belts for polishing. The working principle of the electromagnetic suction cup is: it works based on the principle of electromagnetic induction. When direct current is passed through the coil, a magnetic field is generated around the coil, the iron core is magnetized, and the magnetic lines of force are conducted to the surface of the suction cup through the panel, thereby generating a strong suction force to tightly suck the magnetic workpiece. When the workpiece needs to be released, the power is cut off, the current in the coil disappears, the magnetic field disappears, the suction disappears, and the workpiece can be removed.

[0003] However, when the motor housing is sucked by the electromagnetic chuck and sent to the inside of the belt polisher for grinding and polishing, the motor housing is directly placed on the electromagnetic chuck and then a movable plate is used to hold the motor housing against the sanding belt, ensuring that two surfaces of the motor housing are parallel to the sanding belt and the other two surfaces are perpendicular to the sanding belt. However, if it is directly placed on the cylindrical electromagnetic chuck, the motor housing itself can only be aligned by the movable plate, but the center of the motor housing is not convenient to correspond to the center of the electromagnetic chuck, that is, the electromagnetic chuck is difficult to suck the center of the motor housing, which is easy to cause uneven force during grinding. In addition, the inner wall diameters of the motors are different, and only the top of the motor housing is fixed by the electromagnetic chuck. The inner wall is not fixed to it, and the motor housing is prone to shaking during grinding, affecting the accuracy of grinding; the electromagnetic chuck is directly fixed to the mounting bracket, which is not convenient for it to rotate on the mounting bracket. After grinding two sides of the motor housing, the electromagnetic chuck needs to be cut off from the power supply, and the motor housing needs to be manually removed to replace the surface, and the ungrinded surface needs to be parallel to the sanding belt. The motor housing needs to be positioned again, which wastes time; the sanding belt rotates downward when grinding the motor housing, and the powder during grinding flies downward. There is no dust reduction mechanism on the electromagnetic chuck. The sliding shell moves repeatedly on the slide rail during grinding, and the powder is easily accumulated on the slide rail, affecting the movement of the sliding shell, grinding and polishing, and polluting the air. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides a magnetic clamping device for polishing a motor housing.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a magnetic clamping device for polishing a motor housing, comprising a mounting frame, a driving mechanism 1 installed on the mounting frame, a driving mechanism 2 installed on the driving mechanism 1, a clamping mechanism installed on the driving mechanism 2, and a positioning mechanism installed on the clamping mechanism; the clamping mechanism comprises a support plate, the driving mechanism 2 is installed on the support plate, a fixed shell is rotatably connected to the support plate, a support rod is slidably connected to the fixed shell, the top of the support rod is fixedly connected to the electromagnetic suction cup, and a cylinder 3 is installed at the bottom of the support plate, and the telescopic end of the cylinder 3 is rotatably connected to the support rod inside the fixed shell; the positioning mechanism comprises a plurality of sliding rods, the outer wall of the fixed shell is slidably connected to the plurality of sliding rods, the ends of the plurality of sliding rods are fixedly connected to the expansion plates, and the plurality of expansion plates are rotatably connected to the electromagnetic suction cup.

[0006] Specifically, the plurality of sliding rods and expansion plates are distributed on the outer wall of the fixed shell in a circular array, and the plurality of expansion plates are in an arc-shaped structure.

[0007] Specifically, the positioning mechanism further includes a second spring, and the second spring is clamped between the electromagnetic suction cup and the fixed shell.

[0008] Specifically, the clamping mechanism further includes a connecting disk, and the top of the electromagnetic suction cup is threadedly connected to the connecting disk.

[0009] Specifically, the clamping mechanism also includes a wire groove and a power cord. The side wall of the fixed shell is provided with an arc-shaped wire groove. The electromagnetic suction cup is electrically connected to a power cord. The power cord passes through the fixed shell and extends to the inside of the wire groove.

[0010] Specifically, the clamping mechanism also includes a slide groove, two slide grooves are relatively opened on the support plate, the two slide grooves are slidably connected with a slide bar, a spring is clamped between the slide bar and the support plate, and a positioning plate is fixedly connected to the two slide bars.

[0011] Specifically, the driving mechanism includes a fixed plate, a fixed plate with an L-shaped structure is fixedly connected to the mounting frame, a guide rail is installed on the fixed plate, a sliding shell is slidably connected to the guide rail, a connecting plate is welded to the sliding shell, a cylinder is installed on the fixed plate, and the telescopic end of the cylinder is fixedly connected to the connecting plate.

[0012] Specifically, the second driving mechanism includes a second guide rail, the first sliding shell is equipped with the second guide rail, the second guide rail is slidably connected to the second sliding shell, the second sliding shell is welded with a second connecting plate, the first connecting plate is equipped with a second cylinder, the telescopic end of the second cylinder is fixedly connected to the second connecting plate, and the support plate is installed on the second sliding shell.

[0013] Specifically, a rotating mechanism is installed on the support plate, and the rotating mechanism includes a motor. The motor is installed at the bottom of the support plate, and the output end of the motor is rotatably connected to the support plate. The output end of the motor is key-connected with gear 1, and the outer wall of the fixed shell is fixedly connected with gear 2. Gear 1 and gear 2 are meshed, and the diameter of gear 1 is smaller than the diameter of gear 2. A protective shell is installed on the support plate and is sleeved on gear 1, gear 2 and the fixed shell.

[0014] Specifically, a dust reduction mechanism is installed at the end of the sliding shell one, and the dust reduction mechanism includes a mounting block. The mounting block is welded at the end of the sliding shell one, and a water pipe is fixedly connected to the mounting block. Two nozzles are relatively installed on the water pipe, and a pump head is installed on the nozzle head. A roller is rotatably connected to the pump head. A pressure plate is installed at the bottom of the support plate, and the pressure plate has a wavy structure. The pressure plate and the roller are rollingly connected. The diameter of the nozzle is smaller than the minimum width of the guide rail two.

[0015] The beneficial effects of the present invention are:

[0016] 1. A magnetic clamping device for polishing a motor housing according to the present invention, after the clamping mechanism fixes the motor housing, it is sent into the interior of the sanding belt grinder through the driving mechanism 1, and the motor housing to be polished is reciprocated between the two sanding belts by the driving mechanism 2, and after the motor housing to be polished is placed on the top of the electromagnetic suction cup, the motor housing itself is initially aligned by the movement of the positioning plate, and after alignment, the cylinder 3 is retracted. At this time, the cylinder 3 drives the support rod to descend. When the support rod descends, multiple connecting rods are simultaneously squeezed, and the angles between the multiple connecting rods and the fixed shell become smaller. Further, multiple sliding rods extend from the interior of the fixed shell, and the outer walls of the expansion plates of the multiple arc structures contact the inner walls of the motor housing to be polished, thereby assisting in clamping and positioning, so that the motor housing is in the center position of the electromagnetic suction cup and the force is uniform. At this time, the electromagnetic suction cup is powered on to generate magnetic force, which sucks and fixes the motor housing, completes the clamping of the motor housing, improves the stability during grinding and polishing, and achieves precise polishing.

[0017] 2. The magnetic clamping device for polishing a motor housing described in the present invention has a rotating mechanism installed on a support plate. After polishing two sides of the motor housing, the motor housing is withdrawn from the belt grinder through driving mechanism 1, and the motor on the support plate is further started to realize that gear 1 drives gear 2 to rotate. When the motor housing rotates ninety degrees, it stops rotating, completing the replacement of the four sides of the motor housing on the electromagnetic suction cup, so that the two unpolished sides are parallel to the sanding belt. The wire groove can provide space for the power cord to move. The motor housing can be quickly rotated without cutting off the power supply and removing the motor housing on the electromagnetic suction cup to change the polishing surface. There is no need to repeatedly position the motor housing, which saves time.

[0018] 3. The magnetic clamping device for polishing a motor housing described in the present invention has a dust reduction mechanism installed on the sliding shell. During grinding and polishing, the water pipe is connected to an external water source. After the sliding shell pushes the motor housing into the interior of the belt polisher, the driving mechanism 2 drives the support plate to move back and forth. When the support plate moves back and forth, it drives the pressure plate to move back and forth. Since the pressure plate is connected to the roller on the pump head in a rolling manner, the pressure plate with a further wavy structure intermittently presses the pump head, and the nozzle intermittently sprays water. Since the sand belt rotates downward during grinding, the generated dust will fly downward. Due to the reciprocating movement of the sliding shell 2, water spraying space can be vacated, so that the nozzle can intermittently spray water on the dust to achieve dust reduction, avoid dust accumulation on the guide rail 1 and the guide rail 2 affecting the movement of the sliding shell 1 and the sliding shell 2, and purify the working air at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and examples.

[0020] Figure 1 A schematic diagram of the overall structure provided by the present invention;

[0021] Figure 2 This is a schematic diagram of the connection structure of the sliding housing, the mounting block and the water pipe of the present invention;

[0022] Figure 3 This is a schematic diagram of the connection structure of the cylinder 3, the support rod and the spring 2 of the present invention;

[0023] Figure 4 This is a schematic diagram of the connection structure of the support rod, electromagnetic chuck and spring 2 of the present invention;

[0024] Figure 5 This is a schematic diagram of the connection structure of gear 1, gear 2 and the fixed housing of the present invention;

[0025] Figure 6 Schematic diagram of the connection structure of the electromagnetic chuck, connecting rod and expansion plate of the present invention;

[0026] Figure 7 This is a schematic diagram of the connection structure of the sliding housing, the mounting block and the water pipe of the present invention;

[0027] Figure 8 Schematic diagram of the connection structure of the nozzle, pump head, roller and pressure plate of the present invention;

[0028] Figure 9 It is a schematic diagram of the connection structure of the support plate, the slide groove and the slide bar of the present invention.

[0029] In the figure: 1. Mounting frame; 2. Driving mechanism 1; 201. Fixed plate; 202. Guide rail 1; 203. Sliding housing 1; 204. Cylinder 1; 205. Connecting plate 1; 3. Driving mechanism 2; 301. Guide rail 2; 302. Sliding housing 2; 303. Connecting plate 2; 304. Cylinder 2; 4. Clamping mechanism; 401. Support plate; 402. Fixed housing; 403. Cylinder 3; 404. Electromagnetic chuck; 405. Connecting plate; 406. Slide groove; 407. Positioning plate; 408, support rod; 409, wire trough; 410, power cord; 411, slide bar; 412, spring one; 5, positioning mechanism; 501, expansion plate; 502, connecting rod; 503, spring two; 504, slide bar; 6, rotating mechanism; 601, motor; 602, protective shell; 603, gear one; 604, gear two; 7, dust suppression mechanism; 701, mounting block; 702, water pipe; 703, nozzle; 704, pump head; 705, pressure plate; 706, roller. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] like Figures 1-9As shown, a magnetic clamping device for polishing a motor housing according to the present invention comprises a mounting frame 1, a driving mechanism 1 2 mounted on the mounting frame 1, a driving mechanism 2 3 mounted on the driving mechanism 1 2, a clamping mechanism 4 mounted on the driving mechanism 2 3, and a positioning mechanism 5 mounted on the clamping mechanism 4; the clamping mechanism 4 comprises a support plate 401, a support plate 401 mounted on the driving mechanism 2 3, a fixed shell 402 rotatably connected to the support plate 401, a support rod 408 slidably connected to the fixed shell 402, the top of the support rod 408 is fixedly connected to an electromagnetic suction cup 404, a cylinder 3 403 is mounted on the bottom of the support plate 401, and the telescopic end of the cylinder 3 403 is in contact with the support rod 40 inside the fixed shell 402 8 is rotatably connected; the positioning mechanism 5 includes a plurality of sliding rods 504, the outer wall of the fixed shell 402 is slidably connected to the plurality of sliding rods 504, the ends of the plurality of sliding rods 504 are fixedly connected to the expansion plates 501, and the plurality of expansion plates 501 are rotatably connected to the electromagnetic suction cup 404 by a connecting rod 502; the plurality of sliding rods 504 and the expansion plates 501 are distributed in a circular array on the outer wall of the fixed shell 402, and the plurality of expansion plates 501 are in an arc-shaped structure; the positioning mechanism 5 also includes a second spring 503, and a second spring 503 is clamped between the electromagnetic suction cup 404 and the fixed shell 402; the clamping mechanism 4 also includes a connecting disk 405, and the top of the electromagnetic suction cup 404 is threadedly connected to the connecting disk 405; the clamping mechanism 4 also It includes a wire groove 409 and a power line 410. The side wall of the fixed shell 402 is provided with an arc-shaped wire groove 409. The electromagnetic suction cup 404 is electrically connected to the power line 410. The power line 410 passes through the fixed shell 402 and extends to the inside of the wire groove 409. The clamping mechanism 4 also includes a slide groove 406. Two slide grooves 406 are relatively provided on the support plate 401. The two slide grooves 406 are slidably connected to a slide bar 411. A spring 412 is clamped between the slide bar 411 and the support plate 401. The two slide bars 411 are fixedly connected to a positioning plate 407. The driving mechanism 1 includes a fixed plate 201. The mounting frame 1 is fixedly connected to a fixed plate 201 with an L-shaped structure. The fixed plate 201 is provided with a guide rail 202, a sliding housing 203 is slidably connected to the guide rail 202, a connecting plate 205 is welded to the sliding housing 203, a cylinder 204 is provided on the fixed plate 201, and the telescopic end of the cylinder 204 is fixedly connected to the connecting plate 205; the driving mechanism 2 3 includes a guide rail 2 301, a guide rail 2 301 is provided on the sliding housing 203, a sliding housing 2 302 is slidably connected to the guide rail 2 301, a connecting plate 2 303 is welded to the sliding housing 2 302, a cylinder 2 304 is provided on the connecting plate 205, and the telescopic end of the cylinder 2 304 is fixedly connected to the connecting plate 2 303, and the support plate 401 is provided on the sliding housing 2 302;When polishing the motor housing (the motor 601 of the present invention and the motor housing to be polished are two motors and need to be distinguished, the motor 601 of the present invention is the driving gear 603, which realizes the structural principle, and the polished motor housing belongs to the polished workpiece in the subject), the mounting frame 1 is installed near the belt polisher (the principle of the belt polisher is: when the belt runs at high speed, the workpiece is fed between the belt and the contact wheel or the clamping plate, and the abrasive grains on the belt are in close contact with the surface of the workpiece. Under the combined action of the belt movement and the workpiece feeding, the abrasive grains produce cutting and friction effects on the surface of the workpiece, thereby removing burrs, oxide layers, scratches and other defects on the surface of the workpiece, so that the surface of the workpiece gradually becomes smooth and flat), when polishing the motor housing , place the motor housing on the electromagnetic suction cup 404. If the length of the motor housing is long, the connecting disk 405 on the electromagnetic suction cup 404 can be rotated. The connecting disk 405 can be magnetically conductive and can increase the height of the electromagnetic suction cup 404, thereby increasing the distance between the electromagnetic suction cup 404 and the support plate 401, which is conducive to the placement of motor housings of different heights. After the placement is completed, manually push the positioning plate 407 on the support plate 401. At this time, the slide bar 411 moves to the left inside the slide groove 406, and the spring 1 412 is pulled open. The positioning plate 407 further contacts the side of the motor housing on the connecting disk 405, completing the preliminary alignment of the motor housing. After releasing the positioning plate 407, the spring 1 412 resets the positioning plate 407. The cylinder 3 403 is further started to contract. At this time, the cylinder 3 403 pulls the support rod 408 inside the fixed shell 402. At this time, the support rod 408 drives the electromagnetic suction cup 404 to descend. The spring 2 503 is compressed at this time. As the electromagnetic suction cup 404 descends, the motor housing always contacts the top of the electromagnetic suction cup 404, and the electromagnetic suction cup 404 presses multiple connecting rods 502 after it descends. The angle between the connecting rod 502 and the top of the fixed shell 402 gradually becomes smaller. Due to the sliding connection between the sliding rod 504 and the fixed shell 402, as the connecting rod 502 is pressed, multiple expansion plates 501 are expanded outward at the same time, so that the expansion plates 501 with an arc structure arranged in a circular array can simultaneously grind the inner part of the motor housing to be polished. The motor housing being polished is held in the center of the electromagnetic chuck 404 by the wall, improving its stability and evenly distributing force, making polishing more precise. Then, power cord 410 is connected to an external power source to power the electromagnetic chuck 404. The motor housing being polished is now attracted and fixed. Cylinder 1 204 is activated to push sliding housing 1 203 to the left. When the motor housing to be polished reaches between the two sanding belts of the belt polisher, it stops. Cylinder 2 304 is then repeatedly activated to cause sliding housing 2 302 to reciprocate on guide rail 2 301. This allows the sanding belt to polish vertically while the motor housing can move horizontally, ensuring precise and comprehensive polishing. After the power is cut off, the electromagnetic chuck 404 is demagnetized and releases the motor housing.

[0032] Specifically, such as Figure 2 、 Figure 3 、 Figure 5 and Figure 7 As shown, the support plate 401 is equipped with a rotating mechanism 6, and the rotating mechanism 6 includes a motor 601. The motor 601 is installed at the bottom of the support plate 401. The output end of the motor 601 is rotatably connected to the support plate 401. The output end of the motor 601 is keyed to a gear 1 603. The outer wall of the fixed shell 402 is fixedly connected to a gear 2 604. The gear 1 603 is meshed with the gear 2 604. The diameter of the gear 1 603 is smaller than the diameter of the gear 2 604. The support plate 401 is provided with a protective shell 602 which is sleeved on the gear 1 603, the gear 2 604 and the fixed shell 402; when the polishing of two sides of the motor housing is completed, the other two sides need to be polished, at this time, the belt polisher and the cylinder 2 304 are stopped, and the motor housing and the support plate 401 are reset by contracting the cylinder 1 204, and then the motor 601 on the support plate 401 is started to realize its rotation and drive the gear 1 603 to rotate, and when the gear 1 603 rotates, it drives the gear 2 603 to rotate. 04 rotates, because the fixed shell 402 is rotatably connected to the support plate 401, and the gear 2 604 is fixedly connected to the fixed shell 402, when the gear 2 604 rotates, the fixed shell 402 also rotates. When the polished motor housing rotates ninety degrees, the motor 601 can stop rotating. At this time, the two unpolished sides of the motor housing are parallel to the sanding belt. There is no need to cut off the power to the electromagnetic suction cup 404 to release the motor housing, and the motor housing can be quickly rotated to change sides. There is no need to position the motor housing again, which saves time and can be re-positioned by the air pump. Cylinder one 204 pushes sliding shell one 203 to move to the left, sending the motor housing between the two sanding belts. Similarly, the repeated extension and retraction of cylinder two 304 realizes the lateral movement of the motor housing, and cooperates with the sanding belt for sanding. The number of revolutions of motor 601 can be set to match the number of revolutions of the motor housing that rotate ninety degrees, and when the fixed shell 402 rotates, the power cord 410 can move inside the wire slot 409 without affecting the sanding, and the rotating support rod 408 of the fixed shell 402 can rotate with the extension end of cylinder three 403 to reduce friction at the rotation.

[0033] Specifically, such as Figure 2 、 Figure 3 、 Figure 7 and Figure 8As shown, a dust suppression mechanism 7 is installed at the end of the sliding shell 203, and the dust suppression mechanism 7 includes a mounting block 701. The mounting block 701 is welded to the end of the sliding shell 203, and a water pipe 702 is fixedly connected to the mounting block 701. Two nozzles 703 are relatively installed on the water pipe 702, and a pump head 704 is installed on the nozzle 703. A roller 706 is rotatably connected to the pump head 704. A pressure plate 705 is installed at the bottom of the support plate 401. The pressure plate 705 has a wavy structure, and the pressure plate 705 is in rolling connection with the roller 706. The diameter of the nozzle 703 is smaller than the minimum width of the guide rail 2 (301); the water pipe 702 is connected to an external water source, and after the sliding shell 203 pushes the motor housing into the interior of the belt polisher, the cylinder 2 3 04 drives the support plate 401 to move back and forth, and when the support plate 401 moves back and forth, it drives the pressure plate 705 to move back and forth. Since the pressure plate 705 is rollingly connected to the roller 706 on the pump head 704, the further wavy structure of the pressure plate 705 intermittently presses the pump head 704, and the nozzle 703 intermittently sprays water. Since the sanding belt rotates downward during grinding, the generated dust will fly downward. Due to the reciprocating movement of the sliding shell 2 302, water spraying space can be vacated, and the nozzle 703 can intermittently spray water on the dust to achieve dust reduction, thereby avoiding dust accumulation on the guide rail 1 202 and the guide rail 2 301 affecting the movement of the sliding shell 1 203 and the sliding shell 2 302, and purifying the working air at the same time. The distance between the nozzles 703 is smaller than the minimum inner diameter of the guide rail 2 301, so it will not affect the movement of the sliding shell 2 302.

[0034] When the present invention is in use, first, when polishing the motor housing (the motor 601 of the present invention and the motor housing to be polished are two motors, which need to be distinguished. The motor 601 of the present invention is the driving gear 603, which realizes the structural principle. The polished motor housing belongs to the polished workpiece in the subject), the mounting frame 1 is installed near the belt polisher (the principle of the belt polisher is: when the belt runs at high speed, the workpiece is fed between the belt and the contact wheel or the clamping plate, and the abrasive grains on the belt are in close contact with the surface of the workpiece. Under the combined action of the belt movement and the workpiece feeding, the abrasive grains produce cutting and friction effects on the workpiece surface, thereby removing burrs, oxide layers, scratches and other defects on the workpiece surface, making the workpiece surface gradually smooth and flat. ), when polishing the motor housing, place the motor housing on the electromagnetic suction cup 404. If the length of the motor housing is long, the connecting disk 405 on the electromagnetic suction cup 404 can be rotated. The connecting disk 405 can be magnetic and can increase the height of the electromagnetic suction cup 404, increase the distance between the electromagnetic suction cup 404 and the support plate 401, which is conducive to the placement of motor housings of different heights. After the placement is completed, manually push the positioning plate 407 on the support plate 401. At this time, the slide 411 moves to the left inside the slide groove 406, and the spring 412 is pulled open. The positioning plate 407 further contacts the side of the motor housing on the connecting disk 405, completing the preliminary alignment of the motor housing. After releasing the positioning plate 407, the spring 412 will move the positioning plate 407 is reset, and the cylinder three 403 is further started to contract. At this time, the cylinder three 403 pulls the support rod 408 inside the fixed shell 402. At this time, the support rod 408 drives the electromagnetic suction cup 404 to descend. The spring two 503 is compressed at this time. As the electromagnetic suction cup 404 descends, the motor housing always conflicts with the top of the electromagnetic suction cup 404, and the electromagnetic suction cup 404 presses multiple connecting rods 502 after it descends. The angle between the connecting rod 502 and the top of the fixed shell 402 gradually becomes smaller. Due to the sliding connection between the sliding rod 504 and the fixed shell 402, further with the pressing of the connecting rod 502, multiple expansion plates 501 are expanded outward at the same time, and the expansion plates 501 with an arc structure arranged in a circular array simultaneously press the outer surface of the motor to be polished. The inner wall of the shell conflicts, so that the motor housing to be polished is in the center of the electromagnetic suction cup 404, which improves the stability of the motor housing, uniformly bears force, and makes the polishing more accurate. Then, the power cord 410 is connected to the external power supply to power the electromagnetic suction cup 404. At this time, the motor housing to be polished is adsorbed and fixed, and the cylinder 1 204 is started to push the sliding shell 1 203 to move to the left. When the motor housing to be polished reaches between the two sanding belts of the sand belt polisher, it stops moving. The cylinder 2 304 is further repeatedly started to realize the reciprocating movement of the sliding shell 2 302 on the guide rail 2 301, thereby realizing the vertical polishing of the sand belt while the motor housing can move horizontally, so that the polishing is accurate and comprehensive. After the power is cut off, the electromagnetic suction cup 404 can be demagnetized and release the motor housing.

[0035] Then, when the polishing of two sides of the motor housing that needs to be polished is completed, the other two sides need to be polished. At this time, the belt polisher and cylinder 2 304 are stopped, and the motor housing and support plate 401 are reset by contracting cylinder 1 204. Then, the motor 601 on the support plate 401 is started to realize its rotation and drive gear 1 603 to rotate. When gear 1 603 rotates, it drives gear 2 604 to rotate. Since the fixed shell 402 is rotationally connected to the support plate 401, and the gear 2 604 is fixedly connected to the fixed shell 402, when gear 2 604 rotates, the fixed shell 402 also rotates. When the polished motor housing rotates ninety degrees, the motor 601 can stop rotating. At this time, the motor housing is not The two polished surfaces are parallel to the sanding belts, and the motor housing can be quickly rotated to change surfaces without disconnecting the power to the electromagnetic chuck 404 to release the motor housing. There is no need to reposition the motor housing, which saves time. The sliding housing 203 is pushed to the left by the cylinder 1 204 again to send the motor housing between the two sanding belts. Similarly, the cylinder 2 304 is repeatedly extended and retracted to achieve lateral movement of the motor housing, and the sanding belt is used for grinding. The number of revolutions of the motor 601 can be set to match the number of revolutions of the motor housing that rotates ninety degrees, and when the fixed housing 402 rotates, the power cord 410 can move inside the wire slot 409 without affecting the grinding, and the rotating support rod 408 of the fixed housing 402 can rotate with the telescopic end of the cylinder 3 403 to reduce friction at the rotation.

[0036] Finally, the water pipe 702 is connected to the external water source. After the sliding shell 203 pushes the motor housing into the interior of the belt polisher, the cylinder 2 304 drives the support plate 401 to move back and forth. When the support plate 401 moves back and forth, it drives the pressure plate 705 to move back and forth. Since the pressure plate 705 is rollingly connected to the roller 706 on the pump head 704, the further wavy structure of the pressure plate 705 intermittently presses the pump head 704, and the nozzle 703 intermittently sprays water. Since the sand belt rotates downward during grinding, the generated dust will fly downward. Due to the reciprocating movement of the sliding shell 202, the water spraying space can be vacated, and the nozzle 703 can intermittently spray water on the dust to achieve dust reduction, thereby avoiding the accumulation of dust on the guide rail 1 202 and the guide rail 2 301 affecting the movement of the sliding shell 1 203 and the sliding shell 2 302, and purifying the working air at the same time. The space between the nozzles 703 is smaller than the minimum inner diameter of the guide rail 2 301, so it will not affect the movement of the sliding shell 2 302.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0038] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A magnetic clamping device for polishing a motor housing, characterized in that: It comprises a mounting frame (1), a driving mechanism 1 (2) mounted on the mounting frame (1), a driving mechanism 2 (3) mounted on the driving mechanism 1 (2), a clamping mechanism (4) mounted on the driving mechanism 2 (3), and a positioning mechanism (5) mounted on the clamping mechanism (4); The clamping mechanism (4) includes a support plate (401), the support plate (401) is installed on the driving mechanism 2 (3), the support plate (401) is rotatably connected to a fixed shell (402), the fixed shell (402) is slidably connected to a support rod (408), the top of the support rod (408) is fixedly connected to an electromagnetic suction cup (404), and the bottom of the support plate (401) is installed with a cylinder 3 (403), and the telescopic end of the cylinder 3 (403) is rotatably connected to the support rod (408) inside the fixed shell (402); The positioning mechanism (5) comprises a plurality of sliding rods (504), the outer side wall of the fixed shell (402) is slidably connected to the plurality of sliding rods (504), the ends of the plurality of sliding rods (504) are fixedly connected to expansion plates (501), and a connecting rod (502) is rotatably connected between the plurality of expansion plates (501) and the electromagnetic suction cup (404).

2. The magnetic clamping device for polishing a motor housing according to claim 1, characterized in that: The plurality of sliding rods (504) and expansion plates (501) are distributed in a circular array on the outer wall of the fixed shell (402), and the plurality of expansion plates (501) are in an arc-shaped structure.

3. The magnetic clamping device for polishing a motor housing according to claim 1, characterized in that: The positioning mechanism (5) further includes a second spring (503), and the second spring (503) is clamped between the electromagnetic suction cup (404) and the fixed shell (402).

4. The magnetic clamping device for polishing a motor housing according to claim 1, characterized in that: The clamping mechanism (4) further comprises a connecting disk (405), and the top of the electromagnetic suction cup (404) is threadedly connected to the connecting disk (405).

5. The magnetic clamping device for polishing a motor housing according to claim 1, characterized in that: The clamping mechanism (4) further includes a wire groove (409) and a power line (410). The side wall of the fixed shell (402) is provided with a wire groove (409) with an arc structure. The electromagnetic suction cup (404) is electrically connected to the power line (410). The power line (410) passes through the fixed shell (402) and extends to the interior of the wire groove (409).

6. The magnetic clamping device for polishing a motor housing according to claim 1, characterized in that: The clamping mechanism (4) further includes a slide groove (406), two slide grooves (406) are relatively provided on the support plate (401), a slide bar (411) is slidably connected to the two slide grooves (406), a spring (412) is clamped between the slide bar (411) and the support plate (401), and a positioning plate (407) is fixedly connected to the two slide bars (411).

7. The magnetic clamping device for polishing a motor housing according to claim 1, characterized in that: The driving mechanism 1 (2) comprises a fixed plate (201), a fixed plate (201) in an L-shaped structure is fixedly connected to the mounting frame (1), a guide rail 1 (202) is installed on the fixed plate (201), a sliding shell 1 (203) is slidably connected to the guide rail 1 (202), a connecting plate 1 (205) is welded to the sliding shell 1 (203), a cylinder 1 (204) is installed on the fixed plate (201), and the telescopic end of the cylinder 1 (204) is fixedly connected to the connecting plate 1 (205).

8. The magnetic clamping device for polishing a motor housing according to claim 7, characterized in that: The driving mechanism 2 (3) includes a guide rail 2 (301), the guide rail 2 (301) is installed on the sliding shell 1 (203), the guide rail 2 (301) is slidably connected to the sliding shell 2 (302), the connecting plate 2 (303) is welded to the sliding shell 2 (302), the cylinder 2 (304) is installed on the connecting plate 1 (205), the telescopic end of the cylinder 2 (304) is fixedly connected to the connecting plate 2 (303), and the support plate (401) is installed on the sliding shell 2 (302).

9. The magnetic clamping device for polishing a motor housing according to claim 8, characterized in that: A rotating mechanism (6) is installed on the support plate (401), and the rotating mechanism (6) includes a motor (601). The motor (601) is installed at the bottom of the support plate (401), and the output end of the motor (601) is rotatably connected to the support plate (401). The output end of the motor (601) is key-connected to a gear 1 (603). The outer wall of the fixed shell (402) is fixedly connected to a gear 2 (604). The gear 1 (603) and the gear 2 (604) are meshed. The diameter of the gear 1 (603) is smaller than the diameter of the gear 2 (604). The support plate (401) is installed with a protective shell (602) that is sleeved on the gear 1 (603), the gear 2 (604) and the fixed shell (402).

10. The magnetic clamping device for polishing a motor housing according to claim 8, characterized in that: A dust reduction mechanism (7) is installed at the end of the sliding shell (203), and the dust reduction mechanism (7) includes a mounting block (701). The mounting block (701) is welded to the end of the sliding shell (203), and a water pipe (702) is fixedly connected to the mounting block (701). Two nozzles (703) are relatively installed on the water pipe (702), and a pump head (704) is installed on the nozzle (703). A roller (706) is rotatably connected to the pump head (704). A pressure plate (705) is installed at the bottom of the support plate (401), and the pressure plate (705) has a wavy structure. The pressure plate (705) and the roller (706) are rollingly connected. The diameter of the nozzle (703) is smaller than the minimum width of the guide rail (301).

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