Numerically controlled camshaft grinder

Abstract

The utility model belongs to the technical field of grinding machine, concretely relates to a numerical control camshaft grinding machine, this numerical control camshaft grinding machine, including the workbench, the upper surface fixed connection of workbench has the first rectangle cylinder, the surface of first rectangle cylinder is equipped with the second rectangle cylinder, the inner wall fixed connection of second rectangle cylinder has the first mount pad, the upper and lower sides of first rectangle cylinder inner wall and the surface of first mount pad all are fixedly connected with first electric push rod. This numerical control camshaft grinding machine passes through the cooperation of first rectangle cylinder, second rectangle cylinder, first mount pad, first electric push rod, first motor, first pivot, round hole, first bearing, first three jaw chuck, first guide bushing, sliding plate, first connecting block, second electric push rod, second connecting block, second bearing, second pivot and second three jaw chuck, makes the polishing mechanism can polish two camshafts simultaneously, to effectively improve the machining efficiency of the grinding machine to camshaft.

Description

Technical Field

[0001] This utility model belongs to the field of grinding technology, specifically relating to a CNC camshaft grinding machine. Background Technology

[0002] As a key component of internal combustion engines, the camshaft's profile accuracy directly affects the engine's valve timing and performance, thus requiring extremely high precision and efficiency in its machining. CNC camshaft grinding machines, as core equipment for precision camshaft machining, are widely used in the automotive, machinery, and other industries. However, existing CNC camshaft grinding machines typically can only clamp and machine one camshaft at a time, necessitating frequent clamping and disassembly operations during the machining process. This results in low overall machining efficiency, making it difficult to meet the demands of mass production. Utility Model Content

[0003] The purpose of this invention is to provide a CNC camshaft grinding machine that solves the problem that existing CNC camshaft grinding machines can only process one camshaft at a time, thus requiring frequent clamping and disassembly operations during the processing, resulting in low overall processing efficiency and difficulty in meeting the needs of mass production.

[0004] The specific technical solution adopted by this utility model is as follows:

[0005] A CNC camshaft grinding machine includes a worktable. A first rectangular tube is fixedly connected to the upper surface of the worktable. A second rectangular tube is sleeved on the surface of the first rectangular tube. A first mounting base is fixedly connected to the inner wall of the second rectangular tube. First electric push rods are fixedly connected to the upper and lower sides of the inner wall of the first rectangular tube and the surface of the first mounting base. A first motor is fixedly connected to the surface of the first mounting base. A first rotating shaft is fixedly connected to the output end of the first motor. A circular hole is opened on the left side of the second rectangular tube. A first bearing is fixedly connected to the inner wall of the circular hole and the surface of the first rotating shaft. A first... A three-jaw chuck has a first guide sleeve fixedly connected to the back of the second rectangular cylinder, a slide plate slidably connected to the inner wall of the first guide sleeve, a first connecting block fixedly connected to the front of the slide plate, a second electric push rod fixedly connected to the left side of the first connecting block and the left side of the second rectangular cylinder, a second connecting block fixedly connected to the front of the slide plate, a second bearing fixedly connected to the inner wall of the second connecting block, a second rotating shaft fixedly connected to the inner ring of the second bearing, a second three-jaw chuck fixedly connected to the surface of the second rotating shaft, a translation mechanism fixedly connected to the upper surface of the worktable, and a grinding mechanism fixedly connected to the front of the translation mechanism.

[0006] The present invention is further configured such that the translation mechanism includes a third rectangular tube, a guide post, a second guide sleeve, a vertical plate, and a third electric push rod. The bottom of the third rectangular tube is fixedly connected to the upper surface of the worktable. Both ends of the guide post are fixedly connected to the inner wall of the third rectangular tube. The surface of the guide post is slidably connected to the inner wall of the second guide sleeve. Both the upper and lower sides of the vertical plate are fixedly connected to the surface of the second guide sleeve. The left and right ends of the third electric push rod are fixedly connected to the right side of the vertical plate and the inner wall of the third rectangular tube, respectively. The front side of the vertical plate is fixedly connected to the back side of the grinding mechanism.

[0007] The present invention is further configured such that the grinding mechanism includes a second mounting base, a second motor, a third rotating shaft, a connecting plate, and a grinding disc. The back of the second mounting base is fixedly connected to the front of the vertical plate, the right side of the second mounting base is fixedly connected to the left side of the second motor, the output end of the second motor is fixedly connected to the end of the third rotating shaft, the surface of the third rotating shaft is fixedly connected to the inner wall of the connecting plate, and the right side of the connecting plate is fixedly connected to the left side of the grinding disc.

[0008] The present invention is further configured such that a third guide sleeve is fixedly connected to the front of the workbench, a column is slidably connected to the inner wall of the third guide sleeve, a horizontal column is fixedly connected to the bottom of the column, a fourth electric push rod is fixedly connected to the upper surface of the horizontal column and the upper surface of the workbench, a support block is fixedly connected to the back of the column, and an arc-shaped groove is formed on the upper surface of the support block.

[0009] The present invention is further configured such that there are two support blocks, and both support blocks are located between the first three-jaw chuck and the second three-jaw chuck.

[0010] The present invention is further configured such that the second rotating shaft is located to the left of the first rotating shaft, and the axis of the second rotating shaft coincides with the axis of the first rotating shaft.

[0011] The technical effects achieved by this utility model are as follows:

[0012] The CNC camshaft grinding machine of this utility model, through the cooperation of a first rectangular cylinder, a second rectangular cylinder, a first mounting base, a first electric push rod, a first motor, a first rotating shaft, a circular hole, a first bearing, a first three-jaw chuck, a first guide sleeve, a sliding plate, a first connecting block, a second electric push rod, a second connecting block, a second bearing, a second rotating shaft, and a second three-jaw chuck, enables the grinding mechanism to grind two camshafts simultaneously, thereby effectively improving the processing efficiency of the grinding machine for camshafts.

[0013] This utility model of a CNC camshaft grinding machine utilizes the cooperation of a third guide sleeve, column, cross column, fourth electric push rod, support block, and arc groove. When fixing the end of the camshaft onto the first three-jaw chuck, the user can place the camshaft in the arc groove, allowing the support block to support the camshaft. The arc groove also aligns the camshaft with the first three-jaw chuck, effectively reducing the operational difficulty of fixing the camshaft to the first three-jaw chuck. This makes it easier for the user to fix the camshaft onto the first three-jaw chuck. Attached Figure Description

[0014] Figure 1 This is a front view of the structure of this utility model;

[0015] Figure 2 This is a top view of the structure of this utility model;

[0016] Figure 3 yes Figure 2 Sectional view at point AA;

[0017] Figure 4 yes Figure 3 Enlarged view at point B in the middle;

[0018] Figure 5 yes Figure 3 Enlarged view at point C;

[0019] Figure 6 This is a left view of the first rectangular tube in this utility model;

[0020] Figure 7 This is a front view of the translation mechanism and the grinding mechanism in this utility model;

[0021] Figure 8 This is a left view of the support block in this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Worktable; 2. First rectangular cylinder; 3. Second rectangular cylinder; 4. First mounting base; 5. First electric actuator; 6. First motor; 7. First rotating shaft; 8. Circular hole; 9. First bearing; 10. First three-jaw chuck; 11. First guide sleeve; 12. Slide plate; 13. First connecting block; 14. Second electric actuator; 15. Second connecting block; 16. Second bearing; 17. Second rotating shaft; 18. Second three-jaw chuck; 19. Translation mechanism; 191, third rectangular tube; 192, guide column; 193, second guide sleeve; 194, vertical plate; 195, third electric push rod; 20, grinding mechanism; 201, second mounting base; 202, second motor; 203, third rotating shaft; 204, connecting plate; 205, grinding plate; 21, third guide sleeve; 22, column; 23, horizontal column; 24, fourth electric push rod; 25, support block; 26, arc groove. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] like Figures 1 to 7As shown, a CNC camshaft grinding machine includes a worktable 1. A first rectangular tube 2 is fixedly connected to the upper surface of the worktable 1. A second rectangular tube 3 is fitted onto the surface of the first rectangular tube 2. A first mounting base 4 is fixedly connected to the inner wall of the second rectangular tube 3. First electric push rods 5 are fixedly connected to the upper and lower sides of the inner wall of the first rectangular tube 2 and the surface of the first mounting base 4. A first motor 6 is fixedly connected to the surface of the first mounting base 4. A first rotating shaft 7 is fixedly connected to the output end of the first motor 6. A circular hole 8 is opened on the left side of the second rectangular tube 3. A first bearing 9 is fixedly connected to the inner wall of the circular hole 8 and the surface of the first rotating shaft 7. A first three-jaw chuck 10 is fixedly connected to the surface of the first rotating shaft 7. The back of the two rectangular tubes 3 is fixedly connected to a first guide sleeve 11. The inner wall of the first guide sleeve 11 is slidably connected to a slide plate 12. The front of the slide plate 12 is fixedly connected to a first connecting block 13. The left side of the first connecting block 13 and the left side of the second rectangular tube 3 are both fixedly connected to a second electric push rod 14. The front of the slide plate 12 is fixedly connected to a second connecting block 15. The inner wall of the second connecting block 15 is fixedly connected to a second bearing 16. The inner ring of the second bearing 16 is fixedly connected to a second rotating shaft 17. The surface of the second rotating shaft 17 is fixedly connected to a second three-jaw chuck 18. The upper surface of the worktable 1 is fixedly connected to a translation mechanism 19. The front of the translation mechanism 19 is fixedly connected to a grinding mechanism 20.

[0027] The second rotating shaft 17 is located to the left of the first rotating shaft 7, and the axis of the second rotating shaft 17 coincides with the axis of the first rotating shaft 7.

[0028] The translation mechanism 19 includes a third rectangular tube 191, a guide post 192, a second guide sleeve 193, a vertical plate 194, and a third electric push rod 195. The bottom of the third rectangular tube 191 is fixedly connected to the upper surface of the worktable 1. The left and right ends of the guide post 192 are fixedly connected to the inner wall of the third rectangular tube 191. The surface of the guide post 192 is slidably connected to the inner wall of the second guide sleeve 193. The upper and lower sides of the vertical plate 194 are fixedly connected to the surface of the second guide sleeve 193. The left and right ends of the third electric push rod 195 are fixedly connected to the right side of the vertical plate 194 and the inner wall of the third rectangular tube 191, respectively. The front of the vertical plate 194 is fixedly connected to the back of the grinding mechanism 20.

[0029] The grinding mechanism 20 includes a second mounting base 201, a second motor 202, a third rotating shaft 203, a connecting plate 204, and a grinding disc 205. The back of the second mounting base 201 is fixedly connected to the front of the vertical plate 194. The right side of the second mounting base 201 is fixedly connected to the left side of the second motor 202. The output end of the second motor 202 is fixedly connected to the end of the third rotating shaft 203. The surface of the third rotating shaft 203 is fixedly connected to the inner wall of the connecting plate 204. The right side of the connecting plate 204 is fixedly connected to the left side of the grinding disc 205.

[0030] It should be noted that the second rectangular tube 3 can move up and down on the first rectangular tube 2. The second rectangular tube 3 can be controlled to move up or down by the first electric push rod 5. The camshaft can be connected to the first rotating shaft 7 by the first three-jaw chuck 10, and the first motor 6 can drive the camshaft to rotate.

[0031] The first guide sleeve 11 allows the slide plate 12 to move only left and right. The second electric push rod 14 can control the left and right movement of the slide plate 12. The gap between the first three-jaw chuck 10 and the second three-jaw chuck 18 can be adjusted according to the camshaft of different lengths. When the left end of the camshaft is fixed on the second three-jaw chuck 18, the left end of the camshaft can be limited by the second three-jaw chuck 18.

[0032] With the cooperation of the guide post 192 and the second guide sleeve 193, the vertical plate 194 can only move left and right. The third electric push rod 195 can control the vertical plate 194 to move left or right. The grinding disc 205 can be connected to the third rotating shaft 203 through the connecting plate 204, and the second motor 202 can drive the grinding disc 205 to rotate. When the grinding disc 205 rotates and moves from left to right, the two camshafts can be ground at the same time through the grinding disc 205.

[0033] like Figures 1 to 8 As shown, a third guide sleeve 21 is fixedly connected to the front of the workbench 1, a column 22 is slidably connected to the inner wall of the third guide sleeve 21, a horizontal column 23 is fixedly connected to the bottom of the column 22, a fourth electric push rod 24 is fixedly connected to the upper surface of the horizontal column 23 and the upper surface of the workbench 1, a support block 25 is fixedly connected to the back of the column 22, and an arc groove 26 is opened on the upper surface of the support block 25.

[0034] There are two support blocks 25, and both support blocks 25 are located between the first three-jaw chuck 10 and the second three-jaw chuck 18.

[0035] It should be noted that the third guide sleeve 21 allows the column 22 to move only up and down, while the fourth electric push rod 24 controls the up and down movement of the column 22. By moving the column 22, the position of the support block 25 can be adjusted according to the installation position of the camshaft. When the camshaft is placed in the arc groove 26, the support block 25 supports the camshaft, and the arc groove 26 aligns the camshaft with the first three-jaw chuck 10. This effectively reduces the difficulty of fixing the camshaft to the first three-jaw chuck 10, making it easier for the user to fix the camshaft on the first three-jaw chuck 10.

[0036] The working principle of this utility model is as follows: First, the grinding mechanism 20 is moved to the leftmost position by the third electric push rod 195. Then, the support block 25 is moved to a suitable position by the fourth electric push rod 24. Then, the camshaft to be ground is placed in the arc groove 26. At this time, the camshaft is supported by the support block 25, and the camshaft is aligned with the first three-jaw chuck 10 by the arc groove 26. Then, by translating the camshaft, the right end of the camshaft is inserted into the first three-jaw chuck 10, and the camshaft is fixed together with the first rotating shaft 7 by the first three-jaw chuck 10.

[0037] After the right end of the camshaft is fixed to the first three-jaw chuck 10, the distance between the second three-jaw chuck 18 and the first three-jaw chuck 10 is reduced by the second electric push rod 14. When the left end of the camshaft is inserted into the second three-jaw chuck 18, the second electric push rod 14 stops controlling the slide plate 12 to move, and then the left end of the camshaft is fixed together with the second three-jaw chuck 18.

[0038] After the two camshafts are fixed between the first three-jaw chuck 10 and the second three-jaw chuck 18, the bottom surface of the support block 25 is brought into contact with the worktable 1 by the fourth electric push rod 24. Then, the camshaft is driven to rotate by the first motor 6. Then, the grinding disc 205 is driven to rotate by the second motor 202, and the grinding disc 205 is controlled to move from left to right by the third electric push rod 195. At this time, the rotating camshaft can be ground by the horizontally moving and rotating grinding disc 205. At the same time, when the grinding disc 205 moves from left to right, the camshaft can be controlled to move up or down according to its own contour by the first electric push rod 5.

[0039] After the two camshafts are ground, the grinding mechanism 20 is moved to the leftmost position by the third electric push rod 195. Then, the first motor 6 and the second motor 202 are turned off. After the camshafts and the grinding disc 205 stop rotating, the second three-jaw chuck 18 is first released from the clamp on the left end of the camshaft. Then, the second electric push rod 14 controls the slide plate 12 to move so that the distance between the second three-jaw chuck 18 and the left end of the camshaft reaches the specified size. Then, by releasing the right end of the camshaft with the first three-jaw chuck 10, the ground camshaft can be removed from the grinding machine.

[0040] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A CNC camshaft grinding machine, characterized in that: The system includes a workbench (1), on the upper surface of which a first rectangular tube (2) is fixedly connected. A second rectangular tube (3) is fitted onto the surface of the first rectangular tube (2). A first mounting base (4) is fixedly connected to the inner wall of the second rectangular tube (3). First electric push rods (5) are fixedly connected to the upper and lower sides of the inner wall of the first rectangular tube (2) and to the surface of the first mounting base (4). A first motor (6) is fixedly connected to the surface of the first mounting base (4). A first rotating shaft (7) is fixedly connected to the output end of the first motor (6). A circular hole (8) is opened on the left side of the second rectangular tube (3). A first bearing (9) is fixedly connected to the inner wall of the circular hole (8) and to the surface of the first rotating shaft (7). A first three-jaw chuck (10) is fixedly connected to the surface of the first rotating shaft (7). (3) is fixedly connected to the back of a first guide sleeve (11), and a slide plate (12) is slidably connected to the inner wall of the first guide sleeve (11). A first connecting block (13) is fixedly connected to the front of the slide plate (12). A second electric push rod (14) is fixedly connected to the left side of the first connecting block (13) and the left side of the second rectangular tube (3). A second connecting block (15) is fixedly connected to the front of the slide plate (12). A second bearing (16) is fixedly connected to the inner wall of the second connecting block (15). A second rotating shaft (17) is fixedly connected to the inner ring of the second bearing (16). A second three-jaw chuck (18) is fixedly connected to the surface of the second rotating shaft (17). A translation mechanism (19) is fixedly connected to the upper surface of the worktable (1). A grinding mechanism (20) is fixedly connected to the front of the translation mechanism (19).

2. The CNC camshaft grinding machine according to claim 1, characterized in that: The translation mechanism (19) includes a third rectangular tube (191), a guide post (192), a second guide sleeve (193), a vertical plate (194), and a third electric push rod (195). The bottom of the third rectangular tube (191) is fixedly connected to the upper surface of the worktable (1). The left and right ends of the guide post (192) are fixedly connected to the inner wall of the third rectangular tube (191). The surface of the guide post (192) is slidably connected to the inner wall of the second guide sleeve (193). The upper and lower sides of the vertical plate (194) are fixedly connected to the surface of the second guide sleeve (193). The left and right ends of the third electric push rod (195) are fixedly connected to the right side of the vertical plate (194) and the inner wall of the third rectangular tube (191), respectively. The front of the vertical plate (194) is fixedly connected to the back of the grinding mechanism (20).

3. The CNC camshaft grinding machine according to claim 2, characterized in that: The grinding mechanism (20) includes a second mounting base (201), a second motor (202), a third rotating shaft (203), a connecting plate (204), and a grinding disc (205). The back of the second mounting base (201) is fixedly connected to the front of the vertical plate (194). The right side of the second mounting base (201) is fixedly connected to the left side of the second motor (202). The output end of the second motor (202) is fixedly connected to the end of the third rotating shaft (203). The surface of the third rotating shaft (203) is fixedly connected to the inner wall of the connecting plate (204). The right side of the connecting plate (204) is fixedly connected to the left side of the grinding disc (205).

4. The CNC camshaft grinding machine according to claim 1, characterized in that: The front of the workbench (1) is fixedly connected to a third guide sleeve (21), and the inner wall of the third guide sleeve (21) is slidably connected to a column (22). The bottom of the column (22) is fixedly connected to a horizontal column (23). The upper surface of the horizontal column (23) and the upper surface of the workbench (1) are both fixedly connected to a fourth electric push rod (24). The back of the column (22) is fixedly connected to a support block (25), and the upper surface of the support block (25) is provided with an arc groove (26).

5. The CNC camshaft grinding machine according to claim 4, characterized in that: The number of support blocks (25) is two, and both support blocks (25) are located between the first three-jaw chuck (10) and the second three-jaw chuck (18).

6. The CNC camshaft grinding machine according to claim 1, characterized in that: The second rotating shaft (17) is located to the left of the first rotating shaft (7), and the axis of the second rotating shaft (17) coincides with the axis of the first rotating shaft (7).

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