A device for polishing a magnesium alloy formed product

Abstract

The application provides a magnesium alloy forming piece polishing device and belongs to the technical field of forming piece polishing. The device comprises a polishing rack and a material turnover mechanism. The material turnover mechanism is rotationally connected to the inner side wall of the polishing rack and is used for storing magnetic abrasive and polishing liquid. A magnetic polishing mechanism is installed in the middle of the polishing rack. The magnesium alloy forming piece is fixed on the material turnover mechanism by using a material bundle assembly. Then, the magnesium alloy forming piece is turned over and put into the material turnover mechanism to form a relatively sealed D-shaped space. Then, the magnetic polishing mechanism is rotated by starting a double-drive assembly. The rotating magnetic polishing mechanism drives the magnetic abrasive and the polishing liquid by using centrifugal force to polish the surface of the magnesium alloy forming piece along the height direction of the magnesium alloy forming piece. The magnetic abrasive and the polishing liquid can effectively cover the surface of the workpiece, meeting the polishing requirements of large workpieces and forming pieces with deep and long cavities.

Description

Technical Field

[0001] This invention relates to a grinding and polishing device, specifically a grinding and polishing device for magnesium alloy molded parts, and belongs to the field of grinding and polishing technology for molded parts. Background Technology

[0002] Grinding and polishing magnesium alloy formed parts is a surface finishing process carried out on magnesium alloy workpieces after die casting and extrusion forming. The process follows a step-by-step grinding logic from coarse to fine. First, coarse sandpaper, flap wheels, and abrasive belts are used to remove macroscopic defects such as flow marks, flash, burrs, shrinkage marks, parting lines, and oxide scale from the surface of the casting, eliminating the unevenness left by the forming process. Then, medium and fine abrasives are replaced step by step to refine the surface scratches and reduce the surface roughness. Finally, polishing paste, cloth wheels, and sisal wheels are used to perform mirror-finish polishing.

[0003] Magnetic polishing relies on a magnetic field to drive stainless steel magnetic needles and polishing needles to tumble and rub the workpiece surface at high speed. It is one of the commonly used grinding and polishing processes for existing plate-shaped magnesium alloy parts. However, magnetic polishing is mostly carried out at the bottom of the tank, and the effective coverage height is limited. This means that it is only suitable for polishing plate-shaped, sheet-shaped, or small parts. When grinding and polishing large magnesium alloy parts or parts with deep and long cavities (such as gearbox housings, motor housings, etc.), it is not possible to completely cover the workpiece surface. Therefore, it is necessary to use segmented and multiple polishing, which not only affects the processing efficiency, but also has problems such as insufficient grinding in the middle, local burr residue, and poor gloss on the finished surface.

[0004] Chinese patent titled "Automated Magnetic Polishing and Separation Equipment and Method" (publication number CN120533603B) discloses an automated magnetic polishing and separation technology. By integrating magnetic polishing and magnetic separation, it achieves full automation of the magnetic polishing process and the separation of magnetic abrasive from the workpiece after polishing, ensuring the stability of production efficiency and polishing quality. However, this equipment is similar to traditional magnetic polishing equipment, which sets the rotating magnetic field structure at the bottom of the barrel / polishing chamber, and also suffers from the aforementioned problem of limited effective grinding coverage height. To address this, a grinding and polishing device for magnesium alloy forming parts is proposed. Summary of the Invention

[0005] In view of this, the present invention provides a grinding and polishing device for magnesium alloy forming parts, so as to solve or alleviate the technical problems existing in the prior art, or at least provide a beneficial option.

[0006] The technical solution of this invention is implemented as follows: A grinding and polishing device for magnesium alloy forming parts includes a polishing frame and a turning mechanism. The turning mechanism is rotatably connected to the inner wall of the polishing frame and is used to store magnetic abrasive and polishing liquid. A magnetic polishing mechanism is installed in the middle of the polishing frame to drive the magnetic abrasive to perform vertical grinding on the magnesium alloy forming parts. A material binding assembly is installed on the inner wall of the turning mechanism to fix the magnesium alloy forming parts to the inner wall of the turning mechanism. A dual drive assembly is installed on one side of the polishing frame to drive the turning mechanism and the magnetic polishing mechanism to rotate differentially and coaxially.

[0007] The material turning mechanism, in conjunction with the material bundling assembly, drives the magnesium alloy molded part to rotate along the axial direction of the magnetic polishing mechanism.

[0008] More preferably, the material turning mechanism includes a material turning bin, a boss, a D-shaped cavity, and a storage plate;

[0009] The material turning chamber is rotatably connected to the inner wall of the polishing frame. The boss is located at one end of the material turning chamber. The outer wall of the boss is rotatably connected to the inner wall of the polishing frame. The D-shaped cavity is located on the inner wall of the material turning chamber. The placement plate is hinged to one side of the material turning chamber and is sealed to the inner wall of the material turning chamber.

[0010] More preferably, the magnetic polishing mechanism includes a central shaft, a permanent magnet shaft, and a polishing bushing;

[0011] The outer wall of the central shaft is rotatably connected to the inner wall of the polishing frame and the material turning chamber, the permanent magnet shaft is installed on the inner wall of the central shaft, and the material throwing bushing is fixedly connected to the outer wall of the central shaft.

[0012] In a further preferred embodiment, a support platform is fixedly connected to one side of the polishing frame, the placement plate is placed on the upper surface of the support platform, two buckles are symmetrically installed on one side of the bottom of the placement plate, and two buckle bars are symmetrically provided on one side of the material turning bin, the buckles and buckle bars being compatible.

[0013] More preferably, the inner sidewall of the polishing frame has two symmetrically formed grooves at the top, and a door panel is slidably connected between the two grooves. A handle is fixedly connected to the middle of the outer sidewall of the door panel. A liquid injection valve is connected to the top of one side of the polishing frame, and an electrical control box is installed in the middle of one side. A drain valve is connected to the bottom of the inner sidewall of the polishing frame.

[0014] More preferably, the bundle holder, the planar toothed disc, the clamping block, and the locking mechanism;

[0015] The planar toothed disc is rotatably connected to the inner wall of the material bundle seat. There are at least two clamping blocks, which are arranged in a ring and slidably connected to the inner wall of the material bundle seat. The bottom of the clamping block is threadedly connected to the upper surface of the boss. The locking mechanism is installed on the outside of the material bundle seat and is manual or electric.

[0016] More preferably, the manually operated locking mechanism includes a turntable and a worm gear;

[0017] The turntable is rotatably connected to one side of the material bundle seat, one end of the worm gear is fixedly connected to one end of the turntable, the other end of the worm gear is rotatably connected to the inner side wall of the material bundle seat, the outer side wall of the worm gear meshes with the outer side wall of the planar toothed disc, and the material bundle seat is fixedly connected to the upper surface of the placement plate.

[0018] More preferably, the electrically operated locking mechanism includes a locking element, a geared motor, and a locking bar;

[0019] The locking member is installed on the upper surface of the shelf, the locking bar is slidably connected to the inner wall of the locking member, the top of the locking member is provided with a handle for driving the locking bar to slide back and forth within the locking member, one side of the locking bar is engaged with the outer wall of the material bundle seat, the material bundle seat is rotatably connected to the upper surface of the shelf, the flat gear plate is installed at the bottom of the shelf, and the output shaft of the geared motor passes through the inner walls of the shelf and the material bundle seat and is fixedly connected to the bottom of the flat gear plate.

[0020] More preferably, a collector ring is installed on one side of the inner wall of the polishing frame, and a telescopic connecting rod is installed between the collector ring and the placement plate.

[0021] More preferably, the dual drive assembly includes a drive motor, a belt drive pulley, a transmission belt, a belt driven pulley, and a speed change drive mechanism;

[0022] The drive motor is mounted on one side of the polishing frame, the belt drive pulley is fixedly connected to the output shaft of the drive motor, the belt driven pulley is located above the belt drive pulley, the transmission belt covers the outer side wall of the belt drive pulley and the belt driven pulley, and the speed change drive mechanism is installed between the tipping bin, the central shaft and the belt driven pulley. The speed change drive mechanism can be integrated or separate.

[0023] More preferably, the integrated transmission drive mechanism includes a transmission frame, a front cover, a sun gear, planet gears, an internal gear ring, and a rear cover;

[0024] The gear train is mounted on one side of the polishing frame, the front end cover is mounted on one end of the gear train, one end of the sun gear passes through the inner wall of the front end cover and is mounted on one end of the belt driven pulley, the other end of the sun gear is mounted on one end of the central shaft, the planetary gears are rotatably connected to one side of the front end cover, one side of the rear end cover passes through the inner wall of the planetary gears and is fixedly connected to the inner wall of the front end cover, the internal gear ring is rotatably connected to the middle of the inner wall of the gear train, one end of the internal gear ring is mounted on one end of the boss, and the outer wall of the planetary gears meshes with the inner wall of the internal gear ring and the outer wall of the sun gear.

[0025] More preferably, the split-type transmission drive mechanism includes a gearbox, a sprocket box, a cover plate, a timing sprocket, a transmission chain, gears, gears, and a C-shaped gear ring;

[0026] The gearbox is mounted on the upper surface of the polishing frame, and its output end is mounted on the output end of the drive motor. The sprocket box is fixedly connected to one side of the polishing frame, and the cover plate is mounted on one side of the sprocket box. There are three synchronous sprockets, arranged in a ring and rotatably connected to the inner wall of the sprocket box. The transmission chain covers the outer wall of the synchronous sprockets. The output end of the gearbox passes through the inner wall of the cover plate and is fixedly connected to one end of a synchronous sprocket. There are three gears, all rotatably connected to the bottom of the inner wall of the polishing frame. One end of each gear passes through the inner wall of the polishing frame and the sprocket box and is fixedly connected to one end of the synchronous sprocket. The C-shaped toothed ring is fixedly connected to the outer wall of the material handling hopper, and the outer wall of the gear meshes with the outer wall of the C-shaped toothed ring. One end of the central shaft is mounted on the inner wall of the polishing frame and fixedly connected to one end of the belt driven pulley.

[0027] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions:

[0028] I. This invention uses a material-binding assembly to fix a magnesium alloy molded part onto a flipping mechanism. Then, the magnesium alloy molded part is flipped into the interior of the flipping mechanism, forming a relatively sealed D-shaped space. Then, by activating a dual-drive assembly, a magnetic polishing mechanism is driven to rotate. The rotating magnetic polishing mechanism uses centrifugal force to drive magnetic abrasive and polishing fluid to polish the surface of the magnesium alloy molded part along its height direction. This allows the magnetic abrasive and polishing fluid to effectively cover the surface of the workpiece, meeting the polishing needs of large parts and molded parts with deep and long internal cavities.

[0029] Second, this invention uses a dual-drive component to drive the flipping mechanism and the magnetic polishing mechanism to rotate coaxially at a differential speed. During the grinding and polishing process, the rotating flipping mechanism drives the magnesium alloy forming part to rotate at a low speed around the magnetic polishing mechanism, so as to perform all-round uniform grinding on the magnesium alloy forming part, effectively avoiding the problem of excessive or insufficient grinding of the forming part in some areas, and improving the grinding and polishing effect.

[0030] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a structural diagram of Embodiment 1 of the present invention;

[0033] Figure 2 This is a side view of the structure of Embodiment 1 of the present invention;

[0034] Figure 3 This is a cross-sectional structural diagram of Embodiment 1 of the present invention;

[0035] Figure 4 This is a cross-sectional view of the material handling hopper of the present invention;

[0036] Figure 5 This is an isometric view of the material handling hopper of the present invention;

[0037] Figure 6 For the present invention Figure 5 Exploded view;

[0038] Figure 7 This is an isometric view of the polishing frame of the present invention;

[0039] Figure 8 This is a bottom view of the structure of the shelf of the present invention;

[0040] Figure 9 This is an isometric view of the turntable and worm gear of the present invention;

[0041] Figure 10 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0042] Figure 11 This is a cross-sectional structural diagram of Embodiment 2 of the present invention;

[0043] Figure 12 This is a schematic diagram of the current collector ring and telescopic connecting rod of the present invention;

[0044] Figure 13 This is a cross-sectional structural schematic diagram of the locking component of the present invention;

[0045] Figure 14 This is an exploded view of Embodiment 2 of the present invention;

[0046] Figure 15 This is a schematic diagram of the structure of the gear and C-shaped gear ring of the present invention.

[0047] Reference numerals: 1. Polishing frame; 2. Turning mechanism; 3. Magnetic polishing mechanism; 4. Material binding assembly; 5. Dual drive assembly; 61. Support platform; 71. Buckle; 72. Buckle rod; 73. Slide groove; 74. Door panel; 75. Handle; 76. Liquid injection valve; 77. Electrical control box; 78. Liquid drain valve; 201. Turning bin; 202. Boss; 203. D-shaped cavity; 204. Shelf; 301. Central shaft; 302. Permanent magnet shaft; 303. Material throwing bushing; 401. Material binding seat; 402. Flat gear plate; 403. Clamping block; 404. Locking mechanism; 441. Turntable; 4 42. Worm gear; 421. Locking element; 422. Gear motor; 423. Locking bar; 501. Drive motor; 502. Belt drive pulley; 503. Transmission belt; 504. Belt driven pulley; 505. Speed ​​change drive mechanism; 551. Gearbox; 552. Front cover; 553. Sun gear; 554. Planetary gears; 555. Internal gear ring; 556. Rear cover; 521. Gearbox; 522. Sprocket box; 523. Cover plate; 524. Synchronous sprocket; 525. Transmission chain; 526. Gear; 527. C-shaped gear ring; 81. Slip ring; 82. Telescopic connecting rod. Detailed Implementation

[0048] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0049] It is important to note that terms such as "first," "second," "symmetric," and "array" are used only to distinguish between descriptive and positional descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified with terms such as "first" or "symmetric" may explicitly or implicitly include one or more of that feature; similarly, when the quantity of certain features is not limited by words such as "two" or "three," it should be noted that such features also explicitly or implicitly include one or more features.

[0050] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0051] Example 1

[0052] like Figures 1-9 As shown, this embodiment of the invention provides a grinding and polishing device for magnesium alloy forming parts, including a polishing frame 1 and a turning mechanism 2. The turning mechanism 2 is rotatably connected to the inner wall of the polishing frame 1 and is used to store magnetic abrasive and polishing liquid. A magnetic polishing mechanism 3 is installed in the middle of the polishing frame 1 and is used to drive the magnetic abrasive to perform vertical grinding on the magnesium alloy forming parts. A material binding assembly 4 is installed on the inner wall of the turning mechanism 2 and is used to fix the magnesium alloy forming parts on the inner wall of the turning mechanism 2. A dual drive assembly 5 is installed on one side of the polishing frame 1 and is used to drive the turning mechanism 2 and the magnetic polishing mechanism 3 to rotate differentially and coaxially.

[0053] Among them, the material turning mechanism 2, together with the material binding assembly 4, drives the magnesium alloy forming part to rotate along the axis of the magnetic polishing mechanism 3.

[0054] In one embodiment, the material turning mechanism 2 includes a material turning bin 201, a boss 202, a D-shaped cavity 203, and a storage plate 204;

[0055] The material turning chamber 201 is rotatably connected to the inner wall of the polishing frame 1. The boss 202 is located at one end of the material turning chamber 201. The outer wall of the boss 202 is rotatably connected to the inner wall of the polishing frame 1. The D-shaped cavity 203 is located on the inner wall of the material turning chamber 201. The placement plate 204 is hinged to one side of the material turning chamber 201 and is sealed to the inner wall of the material turning chamber 201.

[0056] By connecting the flipping shelf 204 to the flipping bin 201, a D-shaped cavity 203 is formed inside the flipping bin 201. The magnesium alloy molded parts can be controlled to enter or be taken out of the D-shaped cavity 203 by using the flipping shelf 204.

[0057] In one embodiment, the magnetic polishing mechanism 3 includes a central shaft 301, a permanent magnet shaft 302, and a polishing bushing 303;

[0058] The outer wall of the central shaft 301 is rotatably connected to the inner wall of the polishing frame 1 and the turning chamber 201, the permanent magnet shaft 302 is installed on the inner wall of the central shaft 301, and the throwing shaft sleeve 303 is fixedly connected to the outer wall of the central shaft 301.

[0059] The rotating central shaft 301 drives the permanent magnet shaft 302 and the throwing shaft sleeve 303 to rotate. The permanent magnet shaft 302 is used to attract magnetic abrasive, and the rotating throwing shaft sleeve 303 is used to stir the polishing liquid in the turning chamber 201 and use centrifugal force to throw out the magnetic abrasive attracted by the permanent magnet shaft 302.

[0060] In one embodiment, a support platform 61 is fixedly connected to one side of the polishing frame 1, and a shelf 204 is placed on the upper surface of the support platform 61. Two buckles 71 are symmetrically installed on one side of the bottom of the shelf 204, and two buckle bars 72 are symmetrically provided on one side of the material turning bin 201. The buckles 71 and the buckle bars 72 are compatible.

[0061] The support platform 61 is used to support the storage plate 204, and the storage plate 204 and the flipping bin 201 are fixedly connected by the fastener 71 and the buckle 72.

[0062] In one embodiment, two symmetrical grooves 73 are opened on the top of the inner sidewall of the polishing frame 1, and a door panel 74 is slidably connected between the two grooves 73. A handle 75 is fixedly connected to the middle of the outer sidewall of the door panel 74. A liquid injection valve 76 is connected to the top of one side of the polishing frame 1, an electrical control box 77 is installed in the middle of one side, and a liquid drain valve 78 is connected to the bottom of the inner sidewall of the polishing frame 1.

[0063] The sliding groove 73 is used to guide the door panel 74. The door panel 74 is slid along the sliding groove 73 by moving the handle 75. The injection valve 76 is used to inject polishing liquid into the D-shaped cavity 203. The drain valve 78 is used to drain the polishing liquid from the D-shaped cavity 203.

[0064] In one embodiment, the components are: a material holder 401, a planar toothed disc 402, a clamping block 403, and a locking mechanism 404.

[0065] The planar toothed disc 402 is rotatably connected to the inner wall of the material bundle seat 401. There are at least two clamping blocks 403, which are distributed in a ring and are slidably connected to the inner wall of the material bundle seat 401. The bottom of the clamping block 403 is threadedly connected to the upper surface of the boss 202. The locking mechanism 404 is installed on the outside of the material bundle seat 401 and is manual or electric.

[0066] The manual locking mechanism 404 includes a turntable 441 and a worm gear 442;

[0067] The turntable 441 is rotatably connected to one side of the material bundle seat 401, one end of the worm gear 442 is fixedly connected to one end of the turntable 441, the other end of the worm gear 442 is rotatably connected to the inner side wall of the material bundle seat 401, the outer side wall of the worm gear 442 is meshed with the outer side wall of the flat toothed disc 402, and the material bundle seat 401 is fixedly connected to the upper surface of the placement plate 204.

[0068] Rotating the turntable 441 drives the worm gear 442 to rotate, and the rotating worm gear 442 drives the flat gear disk 402 to rotate. The rotating flat gear disk 402 drives the clamping block 403 to move horizontally along the inner wall of the material holder 401 by means of the thread.

[0069] In one embodiment, the dual drive assembly 5 includes a drive motor 501, a belt drive pulley 502, a transmission belt 503, a belt driven pulley 504, and a speed change drive mechanism 505.

[0070] The drive motor 501 is installed on one side of the polishing frame 1, the belt drive pulley 502 is fixedly connected to the output shaft of the drive motor 501, the belt driven pulley 504 is located above the belt drive pulley 502, the transmission belt 503 covers the outer side wall of the belt drive pulley 502 and the belt driven pulley 504, and the speed change drive mechanism 505 is installed between the tipping bin 201, the central shaft 301 and the belt driven pulley 504. The speed change drive mechanism 505 can be integrated or split.

[0071] The integrated transmission drive mechanism 505 includes a transmission frame 551, a front cover 552, a sun gear 553, planet gears 554, an internal gear ring 555, and a rear cover 556.

[0072] The gearbox 551 is mounted on one side of the polishing frame 1, the front cover 552 is mounted on one end of the gearbox 551, one end of the sun gear 553 passes through the inner wall of the front cover 552 and is mounted on one end of the belt driven pulley 504, the other end of the sun gear 553 is mounted on one end of the central shaft 301, the planet gear 554 is rotatably connected to one side of the front cover 552, one side of the rear cover 556 passes through the inner wall of the planet gear 554 and is fixedly connected to the inner wall of the front cover 552, the internal gear ring 555 is rotatably connected to the middle of the inner wall of the gearbox 551, one end of the internal gear ring 555 is mounted on one end of the boss 202, and the outer wall of the planet gear 554 meshes with the inner wall of the internal gear ring 555 and the outer wall of the sun gear 553.

[0073] The drive motor 501 drives the belt drive pulley 502 to rotate. The rotating belt drive pulley 502 drives the belt driven pulley 504 to rotate via the transmission belt 503. The rotating belt driven pulley 504 drives the central shaft 301 and planetary gears 554 to rotate via the sun gear 553. The rotating planetary gears 554 drive the internal gear ring 555 to rotate in the opposite direction via the tooth pattern. The rotating internal gear ring 555 drives the boss 202 and the tipping bin 201 to rotate at low speed.

[0074] In one embodiment, the magnetic abrasive is ferromagnetic particles, alumina or silicon carbide magnetic abrasive particles attached to the surface, or a stainless steel magnetic needle.

[0075] In one embodiment, the permanent magnet shaft 302 can also be replaced by an electromagnet shaft.

[0076] In operation, taking a magnesium alloy gearbox housing as an example, the present invention first places the molded part on the surface of the material holding seat 401 according to actual needs. Then, the rotating turntable 441 drives the worm gear 442 to rotate, and the rotating worm gear 442 drives the flat gear plate 402 to rotate. The rotating flat gear plate 402 uses the thread to drive the clamping block 403 to move horizontally along the inner wall of the material holding seat 401, so as to use the moving clamping block 403 to clamp the molded part around its perimeter, thereby fixing the molded part on the placement plate 204. Then, the placement plate 204 is flipped and assembled with the flipping bin 201, and connected with the buckle 71 and the buckle 72 to ensure the stability and sealing of the connection between the placement plate 204 and the flipping bin 201.

[0077] When grinding and polishing magnesium alloy formed parts are required, the drive motor 501 is started to drive the belt drive pulley 502 to rotate. The rotating belt drive pulley 502 drives the belt driven pulley 504 to rotate via the transmission belt 503. The rotating belt driven pulley 504 drives the central shaft 301 and planetary gears 554 to rotate via the sun gear 553. The rotating central shaft 301 drives the permanent magnet shaft 302 and the polishing bushing 303 to rotate. The permanent magnet shaft 302 is used to attract magnetic abrasive, and the rotating polishing bushing 303 is used to agitate the polishing fluid in the turning chamber 201 and use centrifugal force to move the permanent magnet shaft 302. The attracted magnetic abrasive is ejected; the rotating planetary gear 554 uses its teeth to drive the inner gear ring 555 to rotate in the opposite direction. The rotating inner gear ring 555 drives the boss 202 and the turning chamber 201 to rotate at a low speed, thereby driving the magnesium alloy forming part to rotate in the opposite direction around the ejector sleeve 303. In order to use the ejected magnetic abrasive and the stirred polishing liquid to polish the surface of the magnesium alloy forming part during the rotation. In addition, during the rotation of the turning chamber 201, the turning chamber 201 can drive the polishing liquid and the magnetic core abrasive to be further stirred by the D-shaped cavity 203, so that the magnetic core abrasive mixed with the polishing liquid can be attracted again by the permanent magnet shaft 302.

[0078] After the single-sided grinding and polishing of the magnesium alloy gearbox molded part is completed, the placement plate 204 is opened again to remove the single-sided polished magnesium alloy gearbox, flip it over and fix it on the material holder 401 for the second time. It is necessary to avoid the clamping block 403 pressing the same position of the magnesium alloy gearbox during the second fixation. Then the placement plate 204 is closed, and the dual drive assembly 5 is started again to drive the flipping mechanism 2 and the magnetic polishing mechanism 3 for the second polishing. This completes the overall grinding and polishing operation of the magnesium alloy gearbox molded part.

[0079] The sliding groove 73 is used to guide the door panel 74 so that during the grinding and polishing process, the door panel 74 can be moved along the sliding groove 73 by moving the handle 75 and abut against the surface of the support table 61, so that a relatively sealed space is formed in the polishing frame 1; the liquid injection valve 76 is used to inject polishing liquid into the D-shaped cavity 203, the liquid drain valve 78 is used to drain the polishing liquid in the D-shaped cavity 203, and the electrical control box 77 is used to control the start and stop of the drive motor 501.

[0080] Example 2

[0081] like Figures 1-15 As shown, this embodiment of the invention also provides a grinding and polishing device for magnesium alloy forming parts, including a polishing frame 1 and a turning mechanism 2. The turning mechanism 2 is rotatably connected to the inner wall of the polishing frame 1 and is used to store magnetic abrasive and polishing liquid. A magnetic polishing mechanism 3 is installed in the middle of the polishing frame 1 and is used to drive the magnetic abrasive to perform vertical grinding on the magnesium alloy forming parts. A material binding assembly 4 is installed on the inner wall of the turning mechanism 2 and is used to fix the magnesium alloy forming parts on the inner wall of the turning mechanism 2. A dual drive assembly 5 is installed on one side of the polishing frame 1 and is used to drive the turning mechanism 2 and the magnetic polishing mechanism 3 to rotate differentially and coaxially.

[0082] Among them, the material turning mechanism 2, together with the material binding assembly 4, drives the magnesium alloy forming part to rotate along the axis of the magnetic polishing mechanism 3.

[0083] The material holder 401, the flat toothed disc 402, the clamping block 403, and the locking mechanism 404;

[0084] The planar toothed disc 402 is rotatably connected to the inner wall of the material bundle seat 401. There are at least two clamping blocks 403, which are distributed in a ring and are slidably connected to the inner wall of the material bundle seat 401. The bottom of the clamping block 403 is threadedly connected to the upper surface of the boss 202. The locking mechanism 404 is installed on the outside of the material bundle seat 401 and is electric.

[0085] The electrically operated locking mechanism 404 includes a locking element 421, a geared motor 422, and a locking bar 423;

[0086] The locking member 421 is installed on the upper surface of the shelf 204, the locking bar 423 is slidably connected to the inner wall of the locking member 421, the top of the locking member 421 is provided with a handle for driving the locking bar 423 to slide back and forth inside the locking member 421, one side of the locking bar 423 is engaged with the outer wall of the material holder 401, the material holder 401 is rotatably connected to the upper surface of the shelf 204, the flat gear plate 402 is installed at the bottom of the shelf 204, and the output shaft of the geared motor 422 passes through the inner wall of the shelf 204 and the material holder 401 and is fixedly connected to the bottom of the flat gear plate 402.

[0087] A collector ring 81 is installed on one side of the inner wall of the polishing frame 1, and a telescopic connecting rod 82 is installed between the collector ring 81 and the placement plate 204.

[0088] The dual drive assembly 5 includes a drive motor 501, a belt drive pulley 502, a transmission belt 503, a belt driven pulley 504, and a speed change drive mechanism 505;

[0089] The drive motor 501 is installed on one side of the polishing frame 1, the belt drive pulley 502 is fixedly connected to the output shaft of the drive motor 501, the belt driven pulley 504 is located above the belt drive pulley 502, the transmission belt 503 covers the outer side wall of the belt drive pulley 502 and the belt driven pulley 504, and the speed change drive mechanism 505 is installed between the tipping bin 201, the central shaft 301 and the belt driven pulley 504. The speed change drive mechanism 505 is a split type.

[0090] The split-type transmission drive mechanism 505 includes a gearbox 521, a sprocket box 522, a cover plate 523, a synchronous sprocket 524, a transmission chain 525, a gear 526, a gear 527, and a C-shaped gear ring 527.

[0091] The gearbox 521 is mounted on the upper surface of the polishing frame 1, and its output end is mounted on the output end of the drive motor 501. A sprocket box 522 is fixedly connected to one side of the polishing frame 1, and a cover plate 523 is mounted on one side of the sprocket box 522. Three synchronous sprockets 524 are arranged in a ring and rotatably connected to the inner wall of the sprocket box 522. A drive chain 525 covers the outer wall of the synchronous sprockets 524. The output end of the gearbox 521 passes through the inner wall of the cover plate 523 and is fixedly connected to one of the synchronous sprockets. One end of the synchronous sprocket 524 has three gears 526, all of which are rotatably connected to the bottom of the inner wall of the polishing frame 1. One end of each gear 526 passes through the inner wall of the polishing frame 1 and the sprocket box 522 and is fixedly connected to one end of the synchronous sprocket 524. The C-shaped toothed ring 527 is fixedly connected to the outer wall of the turning bin 201. The outer wall of the gear 526 meshes with the outer wall of the C-shaped toothed ring 527. One end of the central shaft 301 is connected to the inner wall of the polishing frame 1 and is fixedly connected to one end of the belt driven pulley 504.

[0092] When it is necessary to fix the magnesium alloy molded part to the material holder 401, the locking bar 423 is driven to slide out of the locking bar 421 by turning the handle on the locking member 421 and connect with the outer wall of the material holder 401 to fix the material holder 401. Then, the magnesium alloy molded part is placed on the surface of the material holder 401. Then, the plane geared disk 402 is driven to rotate by starting the geared motor 422. The rotating plane geared disk 402 uses the threaded drive clamp 403 to clamp and fix the magnesium alloy molded part. After the fixation is completed, the locking bar 423 can be driven to separate from the material holder 401 by turning the handle in the opposite direction and retract into the locking member 421. Then, the magnesium alloy molded part is put into the flipping bin 201 by flipping the storage plate 204. During the flipping process, the telescopic connecting rod 82 is folded by the storage plate 204 to cooperate with the collector ring 81 to ensure that the geared motor 422 can still be powered during the rotation of the flipping bin 201 and the storage plate 204.

[0093] When grinding and polishing of magnesium alloy formed parts is required, the drive motor 501 is started to drive the belt drive pulley 502 to rotate, and the output shaft of the drive motor 501 provides power to the output end of the gearbox 521. The rotating belt drive pulley 502 drives the belt driven pulley 504 to rotate via the transmission belt 503, and the rotating belt driven pulley 504 drives the central shaft 301 to rotate at high speed. At the same time, the output end of the gearbox 521 drives a synchronous sprocket 524 to rotate, and the rotating synchronous sprocket 524 drives the remaining... Synchronous sprocket 524 rotates synchronously, and the synchronously rotating synchronous sprocket 524 drives C-shaped gear ring 527 to rotate via gear 526. The rotating C-shaped gear ring 527 drives the tipping bin 201 to rotate around the central shaft 301, so that the magnesium alloy forming part rotates synchronously around the throwing shaft sleeve 303. Alternatively, the reduction motor 422 can be started to drive the entire material holding seat 401 to rotate via the flat gear plate 402 and clamping block 403, so that the magnesium alloy forming part rotates around the throwing shaft sleeve 303 while rotating on its own axis, further improving the all-round uniform grinding effect.

[0094] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A grinding and polishing device for magnesium alloy formed parts, comprising a polishing frame and a material turning mechanism, characterized in that, The material turning mechanism is rotatably connected to the inner wall of the polishing frame and is used to store magnetic abrasive and polishing liquid. A magnetic polishing mechanism is installed in the middle of the polishing frame to drive the magnetic abrasive to perform vertical polishing on the magnesium alloy forming parts. A material binding assembly is installed on the inner wall of the material turning mechanism to fix the magnesium alloy forming parts to the inner wall of the material turning mechanism. A dual drive assembly is installed on one side of the polishing frame to drive the material turning mechanism and the magnetic polishing mechanism to rotate differentially and coaxially. The material turning mechanism, in conjunction with the material bundling assembly, drives the magnesium alloy molded part to rotate along the axial direction of the magnetic polishing mechanism.

2. The grinding and polishing device for magnesium alloy formed parts according to claim 1, characterized in that: The material turning mechanism includes a material turning bin, a boss, a D-shaped cavity, and a storage plate; The material turning chamber is rotatably connected to the inner wall of the polishing frame. The boss is located at one end of the material turning chamber. The outer wall of the boss is rotatably connected to the inner wall of the polishing frame. The D-shaped cavity is located on the inner wall of the material turning chamber. The placement plate is hinged to one side of the material turning chamber and is sealed to the inner wall of the material turning chamber.

3. The grinding and polishing device for magnesium alloy formed parts according to claim 2, characterized in that: The magnetic polishing mechanism includes a central shaft, a permanent magnet shaft, and a polishing bushing. The outer wall of the central shaft is rotatably connected to the inner wall of the polishing frame and the material turning chamber, the permanent magnet shaft is installed on the inner wall of the central shaft, and the material throwing bushing is fixedly connected to the outer wall of the central shaft.

4. The grinding and polishing device for magnesium alloy formed parts according to claim 2, characterized in that: A support platform is fixedly connected to one side of the polishing machine frame. The placement plate is placed on the upper surface of the support platform. Two buckles are symmetrically installed on one side of the bottom of the placement plate. Two buckle rods are symmetrically provided on one side of the material turning bin. The buckles and buckle rods are compatible.

5. The grinding and polishing device for magnesium alloy formed parts according to claim 1, characterized in that: The polishing machine frame has two symmetrical sliding grooves on the top of its inner side wall, and a door panel is slidably connected between the two sliding grooves. A handle is fixedly connected to the middle of the outer side wall of the door panel. A liquid injection valve is connected to the top of one side of the polishing machine frame, and an electrical control box is installed in the middle of one side. A liquid drain valve is connected to the bottom of the inner side wall of the polishing machine frame.

6. The grinding and polishing apparatus for magnesium alloy formed parts according to any one of claims 3-5, characterized in that: The bundle holder, the planar toothed disc, the clamping block, and the locking mechanism; The planar toothed disc is rotatably connected to the inner wall of the material bundle seat. There are at least two clamping blocks, which are arranged in a ring and slidably connected to the inner wall of the material bundle seat. The bottom of the clamping block is threadedly connected to the upper surface of the boss. The locking mechanism is installed on the outside of the material bundle seat and is manual or electric.

7. The grinding and polishing device for magnesium alloy formed parts according to claim 6, characterized in that: The manual locking mechanism includes a turntable and a worm gear; The turntable is rotatably connected to one side of the material bundle seat, one end of the worm gear is fixedly connected to one end of the turntable, the other end of the worm gear is rotatably connected to the inner side wall of the material bundle seat, the outer side wall of the worm gear meshes with the outer side wall of the planar toothed disc, and the material bundle seat is fixedly connected to the upper surface of the placement plate.

8. The grinding and polishing device for magnesium alloy formed parts according to claim 6, characterized in that: The electric locking mechanism includes a locking element, a geared motor, and a locking bar; The locking member is installed on the upper surface of the shelf, the locking bar is slidably connected to the inner wall of the locking member, the top of the locking member is provided with a handle for driving the locking bar to slide back and forth within the locking member, one side of the locking bar is engaged with the outer wall of the material bundle seat, the material bundle seat is rotatably connected to the upper surface of the shelf, the flat gear plate is installed at the bottom of the shelf, and the output shaft of the geared motor passes through the inner walls of the shelf and the material bundle seat and is fixedly connected to the bottom of the flat gear plate.

9. The grinding and polishing device for magnesium alloy formed parts according to claim 8, characterized in that: A collector ring is installed on one side of the inner wall of the polishing frame, and a telescopic connecting rod is installed between the collector ring and the placement plate.

10. The grinding and polishing device for magnesium alloy formed parts according to claim 6, characterized in that: The dual-drive assembly includes a drive motor, a belt drive pulley, a transmission belt, a belt driven pulley, and a speed-changing drive mechanism. The drive motor is mounted on one side of the polishing frame, the belt drive pulley is fixedly connected to the output shaft of the drive motor, the belt driven pulley is located above the belt drive pulley, the transmission belt covers the outer side wall of the belt drive pulley and the belt driven pulley, and the speed change drive mechanism is installed between the tipping bin, the central shaft and the belt driven pulley. The speed change drive mechanism can be integrated or split. The integrated transmission drive mechanism includes a transmission frame, a front cover, a sun gear, planetary gears, an internal gear ring, and a rear cover. The gear train is mounted on one side of the polishing frame, the front end cover is mounted on one end of the gear train, one end of the sun gear passes through the inner wall of the front end cover and is mounted on one end of the belt driven pulley, the other end of the sun gear is mounted on one end of the central shaft, the planetary gears are rotatably connected to one side of the front end cover, one side of the rear end cover passes through the inner wall of the planetary gears and is fixedly connected to the inner wall of the front end cover, the internal gear ring is rotatably connected to the middle of the inner wall of the gear train, one end of the internal gear ring is mounted on one end of the boss, and the outer wall of the planetary gears meshes with the inner wall of the internal gear ring and the outer wall of the sun gear. The split-type transmission drive mechanism includes a gearbox, sprocket box, cover plate, synchronous sprocket, transmission chain, gear, gear and C-type gear ring; The gearbox is mounted on the upper surface of the polishing frame, and its output end is mounted on the output end of the drive motor. The sprocket box is fixedly connected to one side of the polishing frame, and the cover plate is mounted on one side of the sprocket box. There are three synchronous sprockets, arranged in a ring and rotatably connected to the inner wall of the sprocket box. The transmission chain covers the outer wall of the synchronous sprockets. The output end of the gearbox passes through the inner wall of the cover plate and is fixedly connected to one end of a synchronous sprocket. There are three gears, all rotatably connected to the bottom of the inner wall of the polishing frame. One end of each gear passes through the inner wall of the polishing frame and the sprocket box and is fixedly connected to one end of the synchronous sprocket. The C-shaped toothed ring is fixedly connected to the outer wall of the material handling hopper, and the outer wall of the gear meshes with the outer wall of the C-shaped toothed ring. One end of the central shaft is mounted on the inner wall of the polishing frame and fixedly connected to one end of the belt driven pulley.

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