Grinding machine for manufacturing automobile parts

Abstract

The invention relates to the technical field of automobile part machining, in particular to an automobile part manufacturing grinding machine which comprises a workbench, a grinding machine body and a linear moving mechanism are installed on the workbench, and the workbench is provided with a detecting mechanism used for calibrating the positions of parts and further provided with a shifting mechanism used for transposition of the parts. The detection mechanism comprises bearing sleeves fixedly connected to the two sides of the workbench, sliding rods are slidably connected to the bearing sleeves, transmission plates making contact with accessories are fixedly connected to the ends of the sliding rods, inclined plates are fixedly connected to the two sides of each transmission plate, the sliding rods are sleeved with transmission discs, the transmission discs are slidably connected with the side walls of the bearing sleeves, and springs are fixedly connected between the transmission discs and the inner walls of the bearing sleeves. The other end of the sliding rod is fixedly connected with a measuring head, and a displacement sensor in contact with the measuring head is fixedly installed on the workbench. By arranging the detection mechanism, the displacement sensor converts physical displacement into an electric signal to be transmitted in real time no matter whether the accessory has dimensional deviation or displacement during mounting, and an accurate position reference is provided for the grinding machine.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile accessory processing, in particular to an automobile accessory manufacturing polisher. BACKGROUND

[0002] In the field of automobile accessory manufacturing, the polishing processing of plate type accessories (such as automobile body coverings, chassis supports, etc., mostly rectangular or square) is a key link for guaranteeing the size precision, surface quality and subsequent assembly adaptability of the accessories. When the plate type accessories are placed on the workbench of the polisher, the accessories are difficult to completely fit the preset reference position due to the limitation of manual operation precision and the adaptability of the positioning mechanism, and the accessories are often offset in the length direction, skewed in the width direction or slightly inclined in the height direction. These slight deviations will directly cause the misalignment of the actual polishing track and the established program. For example, if the long side of a rectangular plate is offset to one side during installation, the polisher will cause the edge on one side to be polished excessively and the edge on the other side to have burrs after processing according to the preset path. In severe cases, the design size range of the accessory is even exceeded. Moreover, the existing equipment often needs to be manually turned over and repositioned multiple times, which is not only time-consuming and labor-intensive, but also causes the position deviation during manual placement, thereby leading to the inconsistency of polishing references of different surfaces, especially for the polishing of the long side and the short side of a rectangular plate. SUMMARY

[0003] In view of the deficiencies of the prior art, the application provides an automobile accessory manufacturing polisher, which has the advantage of being capable of automatically driving the accessories to change position and solves the problem of low efficiency and easy error of manual repositioning during multi-surface polishing.

[0004] To solve the above technical problems, the application provides the following technical scheme: The automobile accessory manufacturing polisher comprises a workbench, a polisher and a linear movement mechanism installed on the workbench, a detection mechanism for calibrating the position of the accessory is arranged on the workbench, and a displacement mechanism for changing the position of the accessory is also arranged on the workbench. The detection mechanism comprises bearing sleeves fixed to the two sides of the workbench, a sliding rod is slidably connected to the bearing sleeves, the end of the sliding rod is fixedly connected to a transmission plate in contact with the accessory, inclined plates are fixedly connected to the two sides of the transmission plate, a transmission disc is sleeved on the sliding rod, the transmission disc is slidably connected to the side wall of the bearing sleeve, springs are fixedly connected between the transmission disc and the inner wall of the bearing sleeve, the other end of the sliding rod is fixedly connected to a measuring head, and a displacement sensor in contact with the measuring head is fixedly arranged on the workbench.

[0005] Preferably, the displacement mechanism comprises a base arranged on the linear movement mechanism, a housing is rotatably installed on the base, a through hole is arranged on the housing, a support column is fixedly connected to the middle of the base and located at the position of the through hole, a support plate is fixedly connected to the top of the support column, and a positioning assembly for fixing the accessory is arranged on the housing.

[0006] Preferably, a gear ring is rotatably installed on the base through a sliding groove, the shell is fixed to the gear ring, and a second motor is fixed in the base, and the output end of the second motor is fixed with a second straight gear which is in meshing transmission with the gear ring.

[0007] Preferably, the positioning assembly comprises rails fixed to the two sides of the shell, two connecting shafts are rotatably installed in the shell, the two connecting shafts rotate in opposite directions, a transmission sleeve is sleeved on the connecting shaft, a sliding bar is slidably connected to the transmission sleeve, the end of the sliding bar is hingedly connected to the connecting strip at a proximal position, the connecting strip is slidably connected to the rail, a U-shaped frame is fixed to the top of the connecting strip, the U-shaped frame is in a dumping state, and the U-shaped frames on the two sides are symmetrically distributed.

[0008] Preferably, the rail is composed of two sections of straight lines and oblique lines, and the rails on the two sides are also symmetrically distributed, the U-shaped frame at the corresponding position is driven to move obliquely downward, a sliding groove is formed in the rail, and a limiting rod is fixed to the connecting strip and slidably connected to the sliding groove.

[0009] Preferably, a first straight gear is sleeved on the connecting shaft in meshing transmission, and a first motor is fixed to the shell for driving one of the connecting shafts to rotate.

[0010] Preferably, a plurality of adjusting screws are rotatably installed on the upper part of the U-shaped frame, a limiting disc is fixed to the bottom end of the adjusting screw, and the limiting disc is in close contact with the upper part of the accessory.

[0011] Preferably, an electric telescopic rod is fixed to the workbench, a support is fixed to the free end of the electric telescopic rod, and the polisher is fixed to the support.

[0012] Preferably, a roller is rotatably installed at the end of the limiting rod, and the roller is in rolling connection with the inner wall of the sliding groove of the rail.

[0013] Preferably, an electric control box is installed on the workbench.

[0014] By means of the above technical scheme, the automobile accessory manufacturing polisher provided by the present application has at least the following beneficial effects: 1. The automobile accessory manufacturing polisher, the symmetrically distributed load-bearing sleeves, sliding rods and transmission plates cooperate with each other, the transmission plate is always in close contact with the surface of the accessory by means of the elastic force of the spring, the sliding rod can synchronously drive the measuring head to move regardless of the size deviation of the accessory or the slight displacement during installation, the displacement sensor converts the physical displacement into an electrical signal and transmits it in real time, and the polisher is provided with an accurate position reference.

[0015] 2. The automobile accessory manufacturing polisher, the shell on the base is rotatably installed, the support plate at the top of the support column cooperates with the shell to support the accessory, the shell can be rotated to realize the displacement of the accessory after single-sided polishing is completed, manual adjustment of the direction of the accessory is not required, the polishing efficiency is improved, and the polisher is especially suitable for automobile accessory processing scenes which require multi-surface polishing.

[0016] 3. This automotive parts manufacturing grinding machine achieves automated parts switching, greatly improving operating efficiency and switching accuracy. The two motors drive the two spur gears to rotate, which in turn drive the housing and positioning components to rotate synchronously through meshing with the gear ring. Without the need for manual flipping of parts, the un-grinded surface can be accurately turned towards the grinding machine, greatly reducing the time for manual intervention. It is especially suitable for the need for rapid surface changing after symmetrical surface grinding.

[0017] 4. The grinding machine for automotive parts manufacturing has a track consisting of two sections: a straight line and an oblique line. When a specific part needs to be ground, the connecting bar can move the U-shaped frame diagonally downwards along the oblique line, so that the positioning component avoids the working path of the grinding machine and avoids mechanical interference. After grinding, the part can be reset and re-fixed along the straight line, ensuring that there is enough operating space for the grinding machine at different grinding stages.

[0018] 5. This automotive parts manufacturing grinding machine provides precise guidance for the movement of the positioning component. When the part needs to be repositioned, the connecting bar can move diagonally downward along the inclined section of the slide rail, causing the U-shaped frame to move down synchronously. This trajectory design allows the positioning component to actively avoid the working range of the grinding machine, eliminating the obstruction to the grinding operation in terms of physical space, ensuring that the grinding machine can directly reach the part to be processed, and even the edges or corners of the part can be fully ground. Attached Figure Description

[0019] The accompanying drawings, which are provided to further illustrate the invention, constitute a part of this application: Figure 1 This is a front view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the detection mechanism of the present invention; Figure 4 This is a schematic diagram of the external connection structure of the slide bar of the present invention; Figure 5 This is a schematic diagram of the external connection structure of the moving mechanism of the present invention; Figure 6 This is a schematic diagram of the shifting mechanism of the present invention; Figure 7 This is a schematic diagram of the external connection structure of the U-shaped frame of the present invention; Figure 8 This is a schematic diagram of the external connection structure of the base of the present invention.

[0020] Figure label: 100. Workbench; 101. Grinding machine; 102. Electric telescopic rod; 103. Support frame; 104. Linear movement mechanism; 105. Electrical control box; 200, detection mechanism; 201, bearing sleeve; 202, slide rod; 203, transmission plate; 204, inclined plate; 205, spring; 206, transmission disc; 207, measuring head; 208, displacement sensor; 300, displacement mechanism; 301, motor one; 302, connecting shaft; 303, spur gear one; 304, transmission sleeve; 305, slide bar; 306, track; 307, connecting strip; 308, U-shaped frame; 309, limiting rod; 310, adjusting screw; 311, limiting disc; 312, base; 313, tooth ring; 314, housing; 315, motor two; 316, spur gear two; 317, support column; 318, support plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0022] Some embodiments of the automobile accessory manufacturing polisher provided by the present application will be described below with reference to the drawings.

[0023] Embodiment one: The position error of the manually placed accessory cannot be detected in real time, and the polisher 101 can only process according to the preset path, and it is difficult to compensate for the size difference of individual accessories. In order to solve the above problems, in combination with Figure 1 、 Figure 3 and Figure 4 , the present application provides an automobile accessory manufacturing polisher, which comprises a workbench 100, a polisher 101 and a linear motion mechanism 104 are installed on the workbench 100, the linear motion mechanism 104 can drive the accessory to move left and right, and the accessory is polished comprehensively, the workbench 100 is provided with a detection mechanism 200 for calibrating the position of the accessory, which can identify the position of the accessory, and then adjust the position of the polisher 101 according to the position of the accessory to polish the accessory accurately, and a displacement mechanism 300 for changing the position of the accessory is also provided, which can rotate the accessory to change the surface after single surface polishing, so as to facilitate polishing of other surfaces; The detection mechanism 200 comprises a load-bearing sleeve 201 fixed on both sides of the workbench 100, a sliding rod 202 is slidably connected to the load-bearing sleeve 201, the end of the sliding rod 202 is fixedly connected with a transmission plate 203 in contact with the accessory, the transmission plate 203 is fixedly connected with an inclined plate 204 on both sides, a transmission disc 206 is sleeved on the sliding rod 202, the transmission disc 206 is slidably connected with the side wall of the load-bearing sleeve 201, a spring 205 is fixedly connected between the transmission disc 206 and the inner wall of the load-bearing sleeve 201, the other end of the sliding rod 202 is fixedly connected with a measuring head 207, the workbench 100 is fixedly connected with a displacement sensor 208 in contact with the measuring head 207, when the accessory is installed, the accessory is in contact with the transmission plate 203, because the spring 205 is arranged, the transmission plate 203 is always in contact with the accessory, the sliding rod 202 moves with the transmission plate 203, the sliding rod 202 drives the measuring head 207 to move, and then the displacement sensor 208 detects the position of the measuring head 207, so that the position of the accessory that needs to be polished can be identified, accurate polishing is realized, the position of the polishing head is automatically adjusted through detection of the position of the side surface of the accessory, and the processing requirements of accessories of different specifications are met.

[0024] According to the embodiment, the presence of the spring 205 enables the transmission plate 203 to always be in elastic contact with the surface of the accessory, and no matter whether there is a slight deviation in the size of the accessory, the position information can be automatically adapted and accurately transmitted.

[0025] Embodiment two: The existing equipment often needs manual turning and position changing for accessories for multi-surface polishing, which not only consumes time and effort, but also causes inconsistent polishing references of surfaces due to position deviation of each placement, especially for symmetrical surface processing, the angle error of manual position changing directly affects the assembly accuracy of the accessory. Figures 5-8 As shown in the embodiment one, the displacement mechanism 300 comprises a base 312 arranged on the linear motion mechanism 104, the housing 314 is rotatably installed on the base 312, the housing 314 is provided with a through hole, the support column 317 is fixedly connected to the middle of the base 312 and located at the position of the through hole, the support plate 318 is fixedly connected to the top of the support column 317, the positioning assembly for fixing the accessory is arranged on the housing 314, the arrangement of the positioning assembly can fix the accessory, avoid displacement of the accessory during polishing, through the stable fixing of the accessory by the positioning assembly, displacement of the accessory during polishing due to vibration or external force can be effectively avoided, the polishing position is ensured to be accurate, the polishing error caused by shaking of the accessory is reduced, and the stability of polishing quality is improved.

[0026] Specifically, the base 312 is rotatably provided with a gear ring 313 through a sliding groove, the shell 314 is fixedly connected to the gear ring 313, and the base 312 is fixedly provided with a second motor 315. The output end of the second motor 315 is fixedly connected with a second spur gear 316 which is in meshing transmission with the gear ring 313. After the two symmetrical surfaces of the accessory are polished, the second motor 315 drives the second spur gear 316 to rotate, the second spur gear 316 drives the gear ring 313 to rotate, and the shell 314 rotates with the gear ring 313. The shell 314 drives the positioning assembly to rotate to the two surfaces of the accessory which are not polished, and then the positioning assembly fixes the accessory again.

[0027] The movement of the existing positioning assembly mainly depends on a simple sliding rail, lacks a limiting guide structure, and is prone to deviation or shaking during movement, resulting in a large deviation between the position of the accessory after transposition and the initial reference, and further causing inconsistent polishing accuracy of each surface, affecting the assembly adaptability of the accessory. In order to solve the above problems, the positioning assembly comprises two rails 306 fixedly connected to the two sides of the shell 314, and two connecting shafts 302 rotatably installed in the shell 314. The two connecting shafts 302 rotate in opposite directions. A transmission sleeve 304 is sleeved on the connecting shaft 302. A sliding bar 305 is slidably connected to the transmission sleeve 304. The end of the sliding bar 305 is hingedly connected to a connecting strip 307 at a similar position. The connecting strip 307 is slidably connected to the rail 306. The top of the connecting strip 307 is fixedly connected with a U-shaped frame 308. The U-shaped frame 308 is in a dumping state, and the two U-shaped frames 308 are symmetrically distributed. The connecting shaft 302 rotates towards the middle, and the connecting strip 307 on the sliding bar 305 moves by pulling through the transmission sleeve 304. The sliding bar 305 can move on the transmission sleeve 304. The U-shaped frame 308 moves with the sliding bar 305. The two U-shaped frames 308 move towards the middle. Then the accessory is fixed. Conversely, the U-shaped frame 308 can be moved. When the accessory needs to be polished at a specific position, the connecting strip 307 can drive the U-shaped frame 308 to move obliquely downward along the oblique part, so that the whole positioning assembly avoids the working path of the polisher 101, avoiding mechanical interference. After polishing, the accessory can be re-fixed along the straight line segment, ensuring that enough operating space is left for the polisher 101 at different polishing stages.

[0028] According to the embodiment, the symmetrically distributed U-shaped frame 308 is designed in a dumping state, and cooperates with the liftable limiting disc 311 to stably clamp the accessory from both sides and the top without blocking the polishing surface of the accessory. Especially for complex parts such as curved surfaces and edges of automobile accessories, the polisher 101 can directly contact the processing surface without avoiding the positioning part, so that the positioning and polishing actions do not interfere with each other, ensuring that each position of the accessory can be fully polished.

[0029] Embodiment three: The moving track of the traditional positioning assembly is a single straight line, and the clamped accessory cannot actively avoid the working range of the sander 101, so that the edge, corner and other parts of the accessory close to the positioning assembly are blocked and cannot be touched by the sander 101, forming a "sanding blind area". In order to solve the above problems, combined with Figure 7 As shown in the embodiment, the track 306 is composed of two straight lines and two inclined lines, and the two tracks 306 are symmetrically distributed. The U-shaped frame 308 at the corresponding position is driven to move obliquely downward. The track 306 is provided with a sliding groove, and the connecting strip 307 is fixedly connected with a limiting rod 309 which is in sliding connection with the sliding groove. When the accessory needs to be transposed, the accessory is moved to the position between the sander 101 and the transmission plate 203, then the connecting strip 307 moves obliquely downward along the sliding rail, and then the connecting strip 307 and the U-shaped frame 308 thereon are rotated and transposed, and then the accessory is fixed. The precise guidance for the movement of the positioning assembly is provided. When the accessory needs to be transposed, the connecting strip 307 can move obliquely downward along the inclined line of the sliding rail, driving the U-shaped frame 308 to move downward synchronously. The trajectory design enables the positioning assembly to actively avoid the working range of the sander 101, physically eliminating the obstruction to the sanding operation, ensuring that the sander 101 can directly reach the accessory to be processed, and even the edge or corner of the accessory can be fully sanded.

[0030] Specifically, the connecting shaft 302 is sleeved with a straight gear 303 engaged with the transmission, and the housing 314 is fixedly connected with a motor 301 for driving one of the connecting shafts 302 to rotate. The motor 301 drives the connecting shaft 302 to rotate, and the connecting shaft 302 drives the other connecting shaft 302 to rotate through the straight gear 303, thereby enabling the U-shaped frames 308 on both sides to move in a symmetrical direction.

[0031] Further, a plurality of adjusting screws 310 are rotatably installed on the upper part of the U-shaped frame 308. The bottom end of the adjusting screw 310 is fixedly connected with a limiting disc 311 which is in abutment with the upper part of the accessory. Rotating the adjusting screw 310 can drive the limiting disc 311 to rise and fall, adapting to accessories of different thicknesses.

[0032] According to the embodiment, the connecting strip 307 will not deviate or shake during movement, so that the transposition path of the U-shaped frame 308 is always controllable, which not only ensures the reliability of avoiding the sander 101, but also enables accurate resetting after transposition, re-clamping the accessory and avoiding the influence of transposition deviation of the positioning assembly on the subsequent sanding accuracy.

[0033] Embodiment four: Combined with Figure 2 and Figure 7As shown, on the basis of the first embodiment, the workbench 100 is fixed with an electric telescopic rod 102, the free end of the electric telescopic rod 102 is fixedly connected with a support 103, and the sander 101 is fixed to the support 103. The electric telescopic rod 102 is started to drive the support 103 to move, and the sander 101 moves with the support 103, so that the polishing disc of the sander 101 is in contact with the outer wall of the accessory.

[0034] Specifically, the end of the limiting rod 309 is rotatably installed with a roller, and the roller is in rolling connection with the inner wall of the sliding groove of the track 306, so that the U-shaped frame 308 moves more smoothly.

[0035] Further, the workbench 100 is installed with an electric control box 105. First, the displacement sensor 208 detects the position of the measuring head 207, and then transmits a signal to the electric control box 105. The electric control box 105 controls the electric telescopic rod 102 to adjust the position of the sander 101.

[0036] It can be known from the above embodiment that the automobile accessory is placed on the supporting plate 318 of the displacement mechanism 300, the accessory is in contact with the inclined plate 204 of the transmission plate 203 of the detection mechanism 200 and pushes the transmission plate 203 to move, the transmission plate 203 drives the sliding rod 202 to slide on the bearing sleeve 201, the transmission disc 206 on the sliding rod 202 compresses the spring 205, and the measuring head 207 at the other end of the sliding rod 202 moves together, the displacement sensor 208 on the workbench 100 detects the position change of the measuring head 207 and transmits a signal to the electric control box 105, the electric control box 105 controls the electric telescopic rod 102 to drive the support 103 and the sander 101 to move to a suitable polishing position, the motor 301 is started to drive one of the connecting shafts 302 to rotate, the connecting shaft 302 drives the other connecting shaft 302 to rotate in the opposite direction through the meshing spur gear 303, the connecting shaft 302 pulls the sliding bar 305 through the transmission sleeve 304 when rotating, the sliding bar 305 drives the connecting strip 307 to slide along the track 306, the limiting rod 309 slides in the sliding groove of the track 306 and the roller at the end thereof assists in rolling, the U-shaped frames 308 on both sides move to the middle along with the connecting strip 307 and clamp the accessory from both sides, at the same time, the linear movement mechanism 104 drives the base 312 and the accessory to move left and right, and the sander 101 polishes one side of the accessory; when the polishing of one side of the accessory is completed, the shell 314 drives the accessory on the positioning assembly to rotate to the symmetrical side of the polished side, and then the accessory moves left and right to polish the other symmetrical side, the motor 301 drives the connecting shaft 302 to rotate in the opposite direction, the U-shaped frame 308 releases the accessory, the motor 315 is started to drive the spur gear 316 to rotate, the spur gear 316 drives the gear ring 313 and the shell 314 to rotate, the U-shaped frame 308 clamps the two polished sides of the accessory, and then makes the unpolished side of the accessory face the sander 101, and the above polishing process is repeated until the accessory is polished on all sides.

[0037] It is to be understood that the terminology "including", "comprising", or any other variation thereof, is intended to cover a non-exclusive inclusion such that process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0038] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since the scope of the application is defined with respect to the appended claims.

Claims

1. A grinding machine for manufacturing automotive parts, comprising a worktable (100), on which a grinding machine (101) and a linear motion mechanism (104) are mounted, characterized in that: The workbench (100) is provided with a detection mechanism (200) for calibrating the position of the parts, and a displacement mechanism (300) for changing the position of the parts. The detection mechanism (200) includes a load-bearing sleeve (201) fixed to both sides of the workbench (100), a slide rod (202) slidably connected to the load-bearing sleeve (201), a transmission plate (203) fixed to the end of the slide rod (202) in contact with the accessory, inclined plates (204) fixed to both sides of the transmission plate (203), a transmission disc (206) fitted on the slide rod (202), the transmission disc (206) slidably connected to the side wall of the load-bearing sleeve (201), a spring (205) fixed between the transmission disc (206) and the inner wall of the load-bearing sleeve (201), a measuring head (207) fixed to the other end of the slide rod (202), and a displacement sensor (208) in contact with the measuring head (207) fixed on the workbench (100).

2. The automotive parts manufacturing grinding machine according to claim 1, characterized in that: The shifting mechanism (300) includes a base (312) mounted on a linear moving mechanism (104), a housing (314) rotatably mounted on the base (312), a through hole on the housing (314), a support column (317) fixedly connected to the middle of the base (312) at the position of the through hole, a support plate (318) fixedly connected to the top of the support column (317), and a positioning component for fixing accessories on the housing (314).

3. The automotive parts manufacturing grinding machine according to claim 2, characterized in that: A gear ring (313) is rotatably mounted on the base (312) via a sliding groove. The housing (314) is fixedly connected to the gear ring (313). A second motor (315) is fixedly installed inside the base (312). A second spur gear (316) that meshes with the gear ring (313) is fixedly connected to the output end of the second motor (315).

4. The automotive parts manufacturing grinding machine according to claim 2, characterized in that: The positioning component includes a track (306) fixed to both sides of the housing (314). Two connecting shafts (302) are rotatably installed inside the housing (314). The two connecting shafts (302) rotate in opposite directions. A transmission sleeve (304) is fitted on the connecting shaft (302). A slide bar (305) is slidably connected to the transmission sleeve (304). The end of the slide bar (305) is hinged to a connecting bar (307) at a similar position. A connecting bar (307) is slidably connected to the track (306). A U-shaped frame (308) is fixed to the top of the connecting bar (307). The U-shaped frame (308) is in a tilted state, and the U-shaped frames (308) on both sides are symmetrically distributed.

5. The automotive parts manufacturing grinding machine according to claim 4, characterized in that: The track (306) consists of two sections: a straight line and an oblique line. The two sides of the track (306) are also symmetrically distributed, driving the U-shaped frame (308) at the corresponding position to move obliquely downward. A sliding groove is provided in the track (306), and a limiting rod (309) that is slidably connected to the sliding groove is fixed on the connecting bar (307).

6. The automotive parts manufacturing grinding machine according to claim 4, characterized in that: A spur gear (303) for meshing transmission is mounted on the connecting shaft (302), and a motor (301) for driving one of the connecting shafts (302) to rotate is fixed on the housing (314).

7. The automotive parts manufacturing grinding machine according to claim 4, characterized in that: The upper part of the U-shaped frame (308) is rotatably mounted with multiple adjusting screws (310), and the bottom end of the adjusting screws (310) is fixedly connected to a limiting plate (311), which is in contact with the upper part of the accessory.

8. The automotive parts manufacturing grinding machine according to claim 1, characterized in that: An electric telescopic rod (102) is fixedly mounted on the workbench (100), and a bracket (103) is fixedly connected to the free end of the electric telescopic rod (102). The grinder (101) is fixedly mounted on the bracket (103).

9. The automotive parts manufacturing grinding machine according to claim 5, characterized in that: The end of the limiting rod (309) is rotatably mounted with a roller, which is in rolling connection with the inner wall of the groove of the track (306).

10. The automotive parts manufacturing grinding machine according to claim 1, characterized in that: An electrical control box (105) is installed on the workbench (100).

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