A processing and grinding device for automobile camshaft

Abstract

The present invention discloses a processing and grinding device for an automobile camshaft, which relates to the technical field of mechanical processing and comprises a frame and a positioning component, a supporting component and a clamping component installed inside the frame. A grinding belt is arranged around the outer side of the supporting component. When the camshaft is processed and ground, the present invention has the advantages of high grinding accuracy and controllable grinding degree. The camshaft is ground by using a grinding belt to ensure the flatness of the camshaft surface after grinding. The grinding belt is supported and driven by using a supporting component. The supporting component can adjust the pressure between the grinding belt and the camshaft, thereby ensuring the grinding accuracy of the camshaft to avoid excessive grinding.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, in particular to a processing and grinding device for an automobile camshaft. Background Art

[0002] The camshaft is subjected to periodic impact loads, the contact stress between the cam and the tappet is very large, and the relative sliding speed is also very high. Therefore, the wear on the cam working surface is relatively serious. In view of this situation, the camshaft journal and the cam working surface should have higher dimensional accuracy and smaller surface roughness, and the surface of the camshaft needs to be polished after heat treatment.

[0003] The Chinese utility model patent with publication number: CN208945832U discloses a burr grinding device for camshaft processing, including a lifting mechanism, the lifting mechanism includes a lower base plate and an upper base plate, a left support rod and a right support rod are arranged between the lower base plate and the upper base plate, a mechanical jack is also arranged on the lower base plate, a mounting frame is arranged on the upper surface of the upper base plate, a plurality of camshafts are rotatably mounted on the mounting frame, a plurality of suspension rods are arranged above the mounting frame, a slide rail is fixedly connected to the lower end of the suspension rod, a grinding device is slidably mounted on the slide rail, a rack is arranged on the upper surface of the grinding device, a motor is arranged on the left suspension rod, a gear is arranged on the output end of the motor, and the gear is meshed with the rack. The above patent discloses a burr grinding device for camshaft processing with simple structure, easy use, high grinding efficiency and environmental protection.

[0004] The above technical solution has some problems in practical application. This technical solution adopts direct grinding when grinding and polishing the camshaft. It is difficult to control the grinding accuracy of the camshaft surface during the grinding and polishing process, and over-grinding is prone to occur. In addition, this technical solution is not convenient for adjusting the grinding position of the camshaft and is not convenient for quick disassembly and assembly of the camshaft when applied.

[0005] Therefore, it is necessary to invent a processing and grinding device for an automobile camshaft to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a processing and grinding device for an automobile camshaft to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a processing and grinding device for an automobile camshaft, comprising a frame and a positioning assembly, a supporting assembly and a clamping assembly installed inside the frame, wherein a grinding belt is arranged around the outer side of the supporting assembly;

[0008] The positioning assembly is used to adjust the position of the supporting assembly, and the positioning assembly includes a movable seat, a screw sleeve and a positioning screw, the screw sleeve is installed in the middle of the movable seat, the positioning screw is installed inside the screw sleeve, and the positioning screw is rotatably installed on the inner top of the frame;

[0009] The support assembly is used to support the grinding belt, and the support assembly includes a support frame, a driving wheel, an auxiliary wheel and a positioning wheel. The support frame is set to a "factory" shape structure, and the driving wheel, the auxiliary wheel and the positioning wheel are all rotatably installed inside the support frame. The grinding belt is sleeved and installed on the outside of the driving wheel, the auxiliary wheel and the positioning wheel. One end of the driving wheel is installed with a driving assembly, and the middle part of the support frame is installed with a tension control assembly. A connecting assembly is provided between the support frame and the movable seat;

[0010] The clamping assembly is used to clamp and fix the camshaft. The clamping assembly includes two symmetrically arranged clamping seats and a clamping block rotatably installed on the top inner side of the clamping seat. The two clamping seats are respectively slidably installed on the inner two ends of the frame. A stepped groove is provided inside the clamping block. A clamping assembly is fixedly installed on the bottom end of the clamping seat, and an adjustment assembly is installed on the outer side of one of the clamping blocks.

[0011] Preferably, the tension control component is used to control the tension of the grinding belt, and the tension control component includes a tension wheel, both ends of the tension wheel are rotatably mounted with support arms through pin shafts, and the top end of the support arm is rotatably mounted with a pin rod through the pin shaft, and the pin rod is fixedly mounted on the inner middle part of the support frame, the bottom end of the support arm is rotatably mounted with a movable arm through the pin shaft, the top end of the movable arm is rotatably mounted with a sliding rod, and the sliding rod is slidably mounted in a sliding groove opened in the middle part of the support frame, and a connecting seat is rotatably mounted on the middle part of the sliding rod, a fixed seat is provided on one side of the connecting seat, both ends of the fixed seat are penetrated by sockets, a plug rod is installed in the inside of the plug rod, the plug rod is fixedly mounted on the outer side of the connecting seat, and a tension spring is arranged around the middle part of the plug rod, and an adjustment component is installed in the middle part of the fixed seat.

[0012] Preferably, the adjustment assembly is used to adjust the initial position of the tension wheel, and the adjustment assembly includes an adjusting screw and a thread groove, the thread groove is opened through the middle of the fixed seat, the adjusting screw is rotatably installed inside the thread groove, and the adjusting screw is rotatably installed inside the support frame, one end of the adjusting screw is installed with a transmission rod through a bevel gear set, and the transmission rod is rotatably installed in the middle of the outer wall of the support frame.

[0013] Preferably, the connecting assembly is used to connect the position between the positioning assembly and the supporting assembly, and the connecting assembly includes a connecting plate and a damping support rod, the bottom end of the connecting plate is fixedly mounted on one end of the supporting frame, and the top end of the connecting plate is rotatably mounted on the bottom end of the movable seat, the damping support rod is mounted on the outer side of the movable seat, and one end of the damping support rod is rotatably mounted on the middle part of the supporting frame.

[0014] Preferably, the driving assembly is used to drive the grinding belt, and the driving assembly includes a driving motor, a pulley and a transmission belt. The driving motor is fixedly installed inside the support frame, and the pulleys are provided in two groups, and the two groups of pulleys are respectively installed on the output shaft of the driving motor and one end of the driving wheel, and the transmission belt is installed between the two groups of pulleys.

[0015] Preferably, the clamping assembly is used to drive the clamping seat to clamp the camshaft, and the clamping assembly includes two clamping seats fixedly installed at the bottom ends of the clamping seats, a threaded sleeve is installed through the middle of the clamping seat, and a double-headed screw is rotatably installed inside the two threaded sleeves, and the double-headed screw is rotatably installed inside the frame.

[0016] Preferably, the clamping assembly further comprises a sliding sleeve and a positioning slide rod, the sliding sleeve is fixedly mounted on the outer side of the clamping seat, the positioning slide rod is slidably mounted inside the sliding sleeve, and the positioning slide rod is fixedly mounted inside the frame.

[0017] Preferably, the adjustment assembly is used to adjust the angle between the clamp block and the camshaft, and the adjustment assembly includes a worm wheel and a worm, the worm wheel is fixedly mounted on one end of the clamp block, the worm is meshingly mounted on one side of the worm wheel, and the worm is rotatably mounted on the outer side of the clamp seat.

[0018] Preferably, the positioning assembly further comprises a slip ring and a guide slide bar, the slip ring is fixedly mounted on the outer side of the movable seat, the guide slide bar is slidably mounted inside the slip ring, and the guide slide bar is fixedly mounted on the inner top end of the frame.

[0019] Preferably, a handle is fixedly mounted on the top end of the outer side wall of the support frame.

[0020] Technical effects and advantages of the present invention:

[0021] 1. The present invention has the advantages of high grinding accuracy and controllable grinding degree when processing and grinding the camshaft. The camshaft is ground by using a grinding belt to ensure the flatness of the camshaft surface after grinding. The grinding belt is supported and driven by a supporting component. The supporting component can adjust the pressure between the grinding belt and the camshaft, thereby ensuring the grinding accuracy of the camshaft to avoid excessive grinding.

[0022] 2. When the camshaft is processed and polished, the present invention has the advantage of an adjustable polishing range. By setting a positioning component, the positioning component can adjust the position of the support component and the polishing belt, so that the device can perform polishing processing on multiple positions of the camshaft. By setting a clamping component, the clamping component can adjust the angle of the camshaft while clamping and fixing the camshaft, so as to realize polishing processing on multiple surfaces of the camshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the frame structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the clamping assembly of the present invention;

[0026] Figure 4 It is a side schematic diagram of the clamping assembly structure of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the support assembly and the positioning assembly of the present invention;

[0028] Figure 6 It is a side schematic diagram of the support assembly structure of the present invention;

[0029] Figure 7 It is a schematic diagram of the internal structure of the support assembly of the present invention;

[0030] Figure 8 It is a schematic diagram of the tension wheel structure of the present invention;

[0031] Fig. 9 It is a schematic diagram of the support frame structure of the present invention.

[0032] In the figure: 1, frame; 2, positioning assembly; 3, support assembly; 4, grinding belt; 5, clamping assembly; 21, movable seat; 22, screw sleeve; 23, positioning screw; 24, slip ring; 25, guide slide; 26, damping support rod; 31, support frame; 32, driving wheel; 321, driving motor; 322, pulley; 323, transmission belt; 33, auxiliary wheel; 34, positioning wheel; 35, connecting plate; 36, tension wheel; 361, support arm; 362, pin rod; 363, movable arm; 364, slide rod; 365, connecting seat; 366, fixed seat; 367, socket; 368, plug rod; 37, adjusting screw; 371, threaded groove; 372, transmission rod; 373, bevel gear set; 38, handle; 51, clamp seat; 52, clamp block; 521, worm wheel; 522, worm; 53, clamp seat; 531, threaded sleeve; 532, double-headed screw; 533, sliding sleeve; 534, positioning slide rod. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The present invention provides Figures 1 to 9 The processing and grinding device of an automobile camshaft shown in the figure comprises a frame 1 and a positioning assembly 2, a supporting assembly 3 and a clamping assembly 5 installed inside the frame 1, and a grinding belt 4 is arranged around the outer side of the supporting assembly 3;

[0035] The positioning assembly 2 is used to adjust the position of the supporting assembly 3. The positioning assembly 2 includes a movable seat 21, a screw sleeve 22 and a positioning screw 23. The screw sleeve 22 is installed in the middle of the movable seat 21, the positioning screw 23 is installed inside the screw sleeve 22, and the positioning screw 23 is rotatably installed on the inner top of the frame 1;

[0036] The positioning assembly 2 further includes a slip ring 24 and a guide slide bar 25. The slip ring 24 is fixedly mounted on the outer side of the movable seat 21, and the guide slide bar 25 is slidably mounted inside the slip ring 24. The guide slide bar 25 is fixedly mounted on the inner top of the frame 1. The arrangement of the guide slide bar 25 and the slip ring 24 ensures the stability of the movement of the movable seat 21.

[0037] The support assembly 3 is used to support the grinding belt 4. The support assembly 3 includes a support frame 31, a driving wheel 32, an auxiliary wheel 33 and a positioning wheel 34. The support frame 31 is set as a "factory"-shaped structure. The driving wheel 32, the auxiliary wheel 33 and the positioning wheel 34 are all rotatably installed inside the support frame 31. The grinding belt 4 is sleeved and installed on the outside of the driving wheel 32, the auxiliary wheel 33 and the positioning wheel 34. A driving assembly is installed at one end of the driving wheel 32. A tension control assembly is installed in the middle of the support frame 31. A connecting assembly is provided between the support frame 31 and the movable seat 21.

[0038] The tension control assembly is used to control the tension of the grinding belt 4. The tension control assembly includes a tension wheel 36. Both ends of the tension wheel 36 are rotatably mounted with support arms 361 through pin shafts, and the top end of the support arm 361 is rotatably mounted with a pin rod 362 through a pin shaft, and the pin rod 362 is fixedly mounted on the inner middle part of the support frame 31. The bottom end of the support arm 361 is rotatably mounted with a movable arm 363 through a pin shaft, and the top end of the movable arm 363 is rotatably mounted with a slide rod 364, and the slide rod 364 is slidably mounted in a slide groove opened in the middle part of the support frame 31. A connecting seat 365 is rotatably mounted in the middle part of the slide rod 364, and a fixed seat 366 is arranged on one side of the connecting seat 365. Plug holes 367 are penetrated at both ends of the fixed seat 366, and an insert rod 368 is installed in the interior of the plug hole 367. The insert rod 368 is fixedly mounted on the outer side of the connecting seat 365, and a tension spring is arranged around the middle part of the insert rod 368, and an adjustment assembly is installed in the middle part of the fixed seat 366.

[0039] The adjustment component is used to adjust the initial position of the tension wheel 36. The adjustment component includes an adjusting screw 37 and a thread groove 371. The thread groove 371 runs through the middle of the fixed seat 366. The adjusting screw 37 is rotatably installed inside the thread groove 371, and the adjusting screw 37 is rotatably installed inside the support frame 31. One end of the adjusting screw 37 is driven by a bevel gear set 373 and a transmission rod 372 is installed, and the transmission rod 372 is rotatably installed in the middle of the outer wall of the support frame 31. The transmission rod 372 drives the adjusting screw 37 to rotate through the bevel gear set 373. The adjusting screw 37 cooperates with the thread groove 371 to adjust the position of the fixed seat 366, and the fixed seat 366 can adjust the position of the connecting seat 365 through the tension spring to achieve manual adjustment of the position of the tension wheel 36.

[0040] The connecting assembly is used to connect the position between the positioning assembly 2 and the supporting assembly 3. The connecting assembly includes a connecting plate 35 and a damping support rod 26. The bottom end of the connecting plate 35 is fixedly mounted on one end of the supporting frame 31, and the top end of the connecting plate 35 is rotatably mounted on the bottom end of the movable seat 21. The damping support rod 26 is mounted on the outer side of the movable seat 21, and one end of the damping support rod 26 is rotatably mounted on the middle part of the supporting frame 31. The setting of the damping support rod 26 enables the supporting frame 31 to achieve self-positioning when it is pushed upward, so as to facilitate the placement and adjustment of the camshaft.

[0041] The driving assembly is used to drive the grinding belt 4, and the driving assembly includes a driving motor 321, a pulley 322 and a transmission belt 323. The driving motor 321 is fixedly installed inside the support frame 31. Two groups of pulleys 322 are provided, and the two groups of pulleys 322 are respectively installed on the output shaft of the driving motor 321 and one end of the driving wheel 32. The transmission belt 323 is installed between the two groups of pulleys 322. The driving motor 321 drives the driving wheel 32 to rotate through the pulley 322 and the transmission belt 323. The driving wheel 32 can drive the grinding belt 4 to move, so as to realize the grinding of the camshaft surface.

[0042] In addition, a handle 38 is fixedly mounted on the top of the outer wall of the support frame 31. The setting of the handle 38 facilitates the user to pull the support frame 31 to control the contact between the grinding belt 4 and the camshaft surface;

[0043] The clamping assembly 5 is used to clamp and fix the camshaft. The clamping assembly 5 includes two symmetrically arranged clamping seats 51 and a clamping block 52 rotatably mounted on the inner top of the clamping seats 51. The two clamping seats 51 are slidably mounted on the inner two ends of the frame 1 respectively. The inside of the clamping block 52 is provided with a stepped groove. The stepped groove enables the clamping block 52 to adapt to camshafts of various specifications. The bottom end of the clamping seat 51 is fixedly mounted with a clamping assembly, and the outer side of one clamping block 52 is mounted with an adjustment assembly.

[0044] The clamping assembly is used to drive the clamping seat 51 to clamp the camshaft. The clamping assembly includes two clamping seats 53 fixedly installed at the bottom end of the clamping seat 51. A threaded sleeve 531 is installed through the middle of the clamping seat 53. A double-headed screw 532 is rotatably installed inside the two threaded sleeves 531, and the double-headed screw 532 is rotatably installed inside the frame 1. The double-headed screw 532 cooperates with the threaded sleeve 531, so that the two clamping seats 51 are close to each other, and the clamping seat 51 drives the clamping block 52 to move. The two clamping blocks 52 can clamp and fix the camshaft.

[0045] The clamping assembly further includes a sliding sleeve 533 and a positioning slide bar 534. The sliding sleeve 533 is fixedly mounted on the outside of the clamping seat 53. The positioning slide bar 534 is slidably mounted inside the sliding sleeve 533. The positioning slide bar 534 is fixedly mounted inside the frame 1.

[0046] The adjusting assembly is used to adjust the angle between the clamp block 52 and the camshaft. The adjusting assembly includes a worm wheel 521 and a worm 522. The worm wheel 521 is fixedly installed at one end of the clamp block 52, and the worm 522 is meshingly installed on one side of the worm wheel 521, and the worm 522 is rotatably installed on the outer side of the clamp seat 51. The worm wheel 521 and the worm 522 can lock the position of the clamp block 52 while achieving the transmission effect, so as to achieve the effect of locking the camshaft angle.

[0047] In summary, when the device is grinding the camshaft, the camshaft is first fixed inside the frame 1 by the clamping assembly 5, and the angle of the camshaft is adjusted so that the side of the camshaft to be ground faces outward, and then the position of the supporting assembly 3 and the grinding belt 4 is adjusted by the positioning assembly 2 until the grinding belt 4 moves to the position of the camshaft to be ground, and the supporting assembly 3 is pulled so that the supporting assembly 3 drives the grinding belt 4 to move until the grinding belt 4 contacts the position of the camshaft to be ground, and at this time, the driving assembly in the supporting assembly 3 drives the grinding belt 4 to move, so that the grinding belt 4 grinds the camshaft;

[0048] When the camshaft is clamped and fixed by the clamping assembly 5, the camshaft is placed between the two clamping blocks 52, and the hand wheel at one end of the double-headed screw 532 is turned, and the double-headed screw 532 cooperates with the threaded sleeve 531, so that the two clamping seats 51 are close to each other, and the clamping seats 51 drive the clamping blocks 52 to move, and the two clamping blocks 52 can clamp and fix the camshaft, and by turning the hand wheel at one end of the worm 522, the worm 522 can drive the worm wheel 521 to rotate, thereby driving the camshaft to rotate, so as to adjust the angle of the camshaft;

[0049] When the position of the support assembly 3 is adjusted by the positioning assembly 2, by rotating the hand wheel at one end of the positioning screw rod 23, the positioning screw rod 23 cooperates with the screw rod sleeve 22, so that the movable seat 21 drives the support frame 31 to slide horizontally, so as to adjust the position of the grinding belt 4;

[0050] When the camshaft is polished by the polishing belt 4, the driving motor 321 drives the driving wheel 32 to rotate through the pulley 322 and the transmission belt 323, and the driving wheel 32 can drive the polishing belt 4 to move to achieve the polishing of the camshaft surface. In this process, the tension spring applies a force to the connecting seat 365, so that the connecting seat 365 drives the sliding rod 364 and the movable arm 363 to move, and the movable arm 363 drives the tension wheel 36 to move, so as to adjust the tension of the polishing belt 4, thereby ensuring that the polishing belt 4 and the camshaft are in contact with each other. The fitting effect of the camshaft surface is achieved by rotating the handwheel at one end of the transmission rod 372. The transmission rod 372 drives the adjusting screw 37 to rotate through the bevel gear set 373. The adjusting screw 37 cooperates with the thread groove 371 to adjust the position of the fixed seat 366. The fixed seat 366 can adjust the position of the connecting seat 365 through the tension spring to achieve manual adjustment of the position of the tension wheel 36, thereby achieving the adjustment of the contact pressure between the grinding belt 4 and the camshaft to achieve the effect of adjusting the grinding accuracy of the camshaft surface.

[0051] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A processing and grinding device for an automobile camshaft, characterized in that: It comprises a frame (1), and a positioning assembly (2), a supporting assembly (3), and a clamping assembly (5) installed inside the frame (1), wherein a grinding belt (4) is arranged around the outer side of the supporting assembly (3); The positioning assembly (2) is used to adjust the position of the supporting assembly (3), and the positioning assembly (2) comprises a movable seat (21), a screw sleeve (22) and a positioning screw (23), wherein the screw sleeve (22) is mounted on the middle of the movable seat (21), the positioning screw (23) is mounted inside the screw sleeve (22), and the positioning screw (23) is rotatably mounted on the inner top of the frame (1); The support assembly (3) is used to support the sanding belt (4). The support assembly (3) comprises a support frame (31), a driving wheel (32), an auxiliary wheel (33) and a positioning wheel (34). The support frame (31) is arranged in a "plant"-shaped structure. The driving wheel (32), the auxiliary wheel (33) and the positioning wheel (34) are all rotatably mounted inside the support frame (31). The sanding belt (4) is sleeved and mounted on the outside of the driving wheel (32), the auxiliary wheel (33) and the positioning wheel (34). One end of the driving wheel (32) is mounted with a driving assembly. A tension control assembly is mounted in the middle of the support frame (31). A connecting assembly is arranged between the support frame (31) and the movable seat (21). The clamping assembly (5) is used to clamp and fix the camshaft, and the clamping assembly (5) comprises two symmetrically arranged clamping seats (51) and a clamping block (52) rotatably mounted on the inner top end of the clamping seats (51), the two clamping seats (51) are respectively slidably mounted on the inner two ends of the frame (1), a groove with a stepped structure is provided inside the clamping block (52), a clamping assembly is fixedly mounted on the bottom end of the clamping seat (51), and an adjustment assembly is mounted on the outer side of one of the clamping blocks (52); The tension control assembly is used to control the tension of the grinding belt (4), and the tension control assembly includes a tension wheel (36), both ends of the tension wheel (36) are rotatably mounted with support arms (361) through a pin shaft, and the top end of the support arm (361) is rotatably mounted with a pin rod (362), and the pin rod (362) is fixedly mounted on the inner middle part of the support frame (31), and the bottom end of the support arm (361) is rotatably mounted with a movable arm (363) through a pin shaft, and the top end of the movable arm (363) is rotatably mounted with a slide rod (364), and the slide rod (364) ) is slidably installed in a slide groove opened in the middle of the support frame (31), a connecting seat (365) is rotatably installed in the middle of the slide rod (364), a fixed seat (366) is arranged on one side of the connecting seat (365), both ends of the fixed seat (366) are penetrated by a plug hole (367), an insert rod (368) is installed in the inside of the plug hole (367), the insert rod (368) is fixedly installed on the outside of the connecting seat (365), and a tension spring is arranged around the middle of the insert rod (368), and an adjustment component is installed in the middle of the fixed seat (366); The adjustment assembly is used to adjust the initial position of the tension wheel (36), and comprises an adjustment screw (37) and a thread groove (371), wherein the thread groove (371) penetrates and is opened in the middle of the fixing seat (366), the adjustment screw (37) is rotatably mounted inside the thread groove (371), and the adjustment screw (37) is rotatably mounted inside the support frame (31), and one end of the adjustment screw (37) is driven and mounted with a transmission rod (372) through a bevel gear set (373), and the transmission rod (372) is rotatably mounted in the middle of the outer wall of the support frame (31).

2. The processing and grinding device for an automobile camshaft according to claim 1, characterized in that: The connecting assembly is used to connect the position between the positioning assembly (2) and the supporting assembly (3), and the connecting assembly comprises a connecting plate (35) and a damping support rod (26), the bottom end of the connecting plate (35) is fixedly mounted on one end of the supporting frame (31), and the top end of the connecting plate (35) is rotatably mounted on the bottom end of the movable seat (21), the damping support rod (26) is mounted on the outer side of the movable seat (21), and one end of the damping support rod (26) is rotatably mounted on the middle part of the supporting frame (31).

3. The processing and grinding device for an automobile camshaft according to claim 1, characterized in that: The driving assembly is used to drive the sanding belt (4), and comprises a driving motor (321), a pulley (322) and a transmission belt (323). The driving motor (321) is fixedly mounted inside the support frame (31), and two groups of pulleys (322) are provided, and the two groups of pulleys (322) are respectively mounted on the output shaft of the driving motor (321) and one end of the driving wheel (32), and the transmission belt (323) is mounted between the two groups of pulleys (322).

4. The processing and grinding device for an automobile camshaft according to claim 1, characterized in that: The clamping assembly is used to drive the clamping seat (51) to clamp the camshaft, and the clamping assembly comprises two clamping seats (53) fixedly mounted on the bottom end of the clamping seat (51), a threaded sleeve (531) is installed through the middle of the clamping seat (53), and a double-headed screw (532) is rotatably installed inside the two threaded sleeves (531), and the double-headed screw (532) is rotatably installed inside the frame (1).

5. The processing and grinding device for an automobile camshaft according to claim 4, characterized in that: The clamping assembly further comprises a sliding sleeve (533) and a positioning slide bar (534), wherein the sliding sleeve (533) is fixedly mounted on the outside of the clamping seat (53), the positioning slide bar (534) is slidably mounted inside the sliding sleeve (533), and the positioning slide bar (534) is fixedly mounted inside the frame (1).

6. The processing and grinding device for an automobile camshaft according to claim 1, characterized in that: The adjusting assembly is used to adjust the angle between the clamping block (52) and the camshaft, and comprises a worm wheel (521) and a worm (522), wherein the worm wheel (521) is fixedly mounted on one end of the clamping block (52), the worm (522) is meshingly mounted on one side of the worm wheel (521), and the worm (522) is rotatably mounted on the outer side of the clamping seat (51).

7. The processing and grinding device for an automobile camshaft according to claim 1, characterized in that: The positioning assembly (2) further comprises a slip ring (24) and a guide slide bar (25), wherein the slip ring (24) is fixedly mounted on the outside of the movable seat (21), the guide slide bar (25) is slidably mounted inside the slip ring (24), and the guide slide bar (25) is fixedly mounted on the top end inside the frame (1).

8. The processing and grinding device for an automobile camshaft according to claim 1, characterized in that: A handle (38) is fixedly mounted on the top end of the outer wall of the support frame (31).

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