Hobbing device for camshaft machining

Abstract

The utility model belongs to the technical field of camshaft production, and particularly relates to a camshaft machining hobbing device which comprises a workbench, and a motor is fixedly connected to the bottom of the workbench. The output end of the motor is fixedly connected with a limiting ring; the limiting ring is rotationally connected with the workbench; the side wall of the limiting ring is in threaded connection with a plurality of fixing bolts; the end part of the fixing bolt is rotationally connected with an extrusion block; the extrusion block is arranged in an arc shape; a first supporting frame is fixedly connected to the top of the workbench. The top of the first supporting frame is fixedly connected with a first air cylinder. The output end of the first air cylinder is fixedly connected with a round rod. The internal space of the limiting ring can be adjusted through rotation of the fixing bolt after the cam shaft is placed so as to adapt to different cam shafts, then the contact between the gear hobbing assembly and the cam shaft is adjusted through the second air cylinder so that the cam shaft can be processed, and therefore the flexibility of processing the cam shaft is improved; and meanwhile, the extrusion block is arc-shaped and can be better attached to the surface of the cam shaft when the cam shaft is extruded and fixed.

Description

Technical Field

[0001] This utility model relates to the field of camshaft manufacturing technology, specifically a gear hobbing device for camshaft machining. Background Technology

[0002] The camshaft is a component in a piston engine. Its function is to control the opening and closing of the valves. Although the camshaft rotates at half the speed of the crankshaft in a four-stroke engine, its speed is still usually very high, and it needs to withstand a lot of torque. Therefore, the design of the camshaft requires high strength and support, and its material is generally high-quality alloy steel or alloy steel.

[0003] Camshaft machining is a key step in automobile engine manufacturing. Through processes such as turning and grinding, the cam profile is precisely shaped to ensure the accurate timing of valve opening and closing, which directly affects the engine's power performance and fuel efficiency.

[0004] When machining a camshaft, a gear hobbing step is required. However, during machining, the camshaft needs to be fixed first and then rotated to contact the gear hobbing roller. But it was found that the fixing device is usually set to a fixed size, making it difficult to fix multiple sizes during installation.

[0005] Therefore, a gear hobbing device for camshaft machining is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A camshaft gear hobbing device of this utility model includes a worktable, a motor fixedly connected to the bottom of the worktable; a limit ring fixedly connected to the output end of the motor; the limit ring is rotatably connected to the worktable; multiple fixing bolts are threaded to the side wall of the limit ring; a pressing block is rotatably connected to the end of each fixing bolt; the pressing block is arc-shaped; a first support frame is fixedly connected to the top of the worktable; a first cylinder is fixedly connected to the top of the first support frame; a round rod is fixedly connected to the output end of the first cylinder; the round rod is through-mounted and slidably connected to the first support frame; the bottom of the round rod is fixedly... A square plate is attached; a rotating seat is installed in the middle of the square plate; the rotating seat and the limiting ring are correspondingly arranged; a vertical plate is fixedly attached to the surface of the worktable; a second cylinder is fixedly attached to the side wall of the vertical plate; a second support frame is fixedly attached to the output end of the second cylinder; a gear hobbing assembly is provided on the side wall of the second support frame; by using a fixing bolt, the internal space of the limiting ring can be adjusted by rotating the fixing bolt after the camshaft is placed, thereby adapting to different camshafts. Then, the contact between the gear hobbing assembly and the camshaft is adjusted by the second cylinder to process it, thereby increasing the flexibility when processing the camshaft. At the same time, the extrusion block is arc-shaped, which can fit more closely to the surface of the camshaft when extruding and fixing the camshaft.

[0008] Preferably, a pair of electromagnets are fixed to the side wall of the second support frame; the electromagnets are located below the gear hobbing assembly; by adding electromagnets, the debris generated during processing can be attracted, thereby reducing the accumulation of debris after it falls and increasing the concentration of debris. After processing is completed, the processing container can be placed under the electromagnets, and then the electromagnets are de-energized. At this time, the debris will fall into the container for rapid collection.

[0009] Preferably, a locking block is fixed to the bottom of the second support frame; the locking block is located below the electromagnet; a collection box is slidably fitted inside the locking block; by adding the locking block and the collection box, debris can be quickly collected after the electromagnet is de-energized, thus speeding up the processing of debris on the surface of the electromagnet.

[0010] Preferably, a ring is fixed to the end of the fixing bolt; the ring and the fixing bolt are correspondingly arranged; by adding the ring, the fixing bolt can be rotated quickly by increasing the force point of the ring, thereby driving the fixing bolt to rotate quickly and increasing the rotation speed.

[0011] Preferably, the worktable surface is fixed with multiple scale bars; the scale bars and the fixing bolts are correspondingly arranged; by adding scale bars, the position of the fixing bolts can be quickly determined by rotating the fixing bolts, thereby increasing the centering of the camshaft position.

[0012] Preferably, a flexible pad is fixed to the inner wall of the extrusion block; the flexible pad and the extrusion block are correspondingly arranged; by adding the flexible pad, the extrusion force generated by the extrusion block can be reduced by the flexible blocking of the flexible pad when the extrusion block extrudes the camshaft, thereby reducing the extrusion force on the camshaft.

[0013] The advantages of this utility model are:

[0014] 1. The camshaft processing gear hobbing device of this utility model can adjust the internal space of the limiting ring by rotating the fixing bolt after the camshaft is placed, thereby adapting to different camshafts. Then, the contact between the gear hobbing assembly and the camshaft is adjusted by the second cylinder to process it, thereby increasing the flexibility of processing the camshaft. At the same time, the extrusion block is arc-shaped, which can fit more closely to the camshaft surface when extruding and fixing the camshaft.

[0015] 2. The camshaft machining gear hobbing device of this utility model can attract the debris generated during processing by adding an electromagnet, thereby reducing the accumulation of debris after it falls and increasing the concentration of debris. After processing is completed, a processing container can be placed under the electromagnet, and then the electromagnet is de-energized. At this time, the debris will fall into the container for rapid collection. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main body of this utility model;

[0018] Figure 2 This is a schematic diagram of the limiting ring in this utility model;

[0019] Figure 3 This is a schematic diagram of the fixing bolt in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the collection box in this utility model;

[0021] Figure 5 This is a schematic diagram of the card block in this utility model.

[0022] In the diagram: 1. Workbench; 11. Motor; 12. Limiting ring; 13. Fixing bolt; 14. Extrusion block; 15. First support frame; 16. First cylinder; 17. Round rod; 18. Square plate; 19. Rotating seat; 101. Vertical plate; 102. Second cylinder; 103. Second support frame; 104. Gear hobbing assembly; 2. Electromagnet; 3. Clamping block; 31. Collection box; 4. Ring; 5. Scale strip; 6. Flexible pad. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0024] Specific implementation examples are given below.

[0025] like Figures 1 to 5As shown in the embodiment of this utility model, a camshaft gear hobbing device includes a worktable 1. A motor 11 is fixedly connected to the bottom of the worktable 1. A limit ring 12 is fixedly connected to the output end of the motor 11. The limit ring 12 is rotatably connected to the worktable 1. Multiple fixing bolts 13 are threadedly connected to the side wall of the limit ring 12. A pressing block 14 is rotatably connected to the end of the fixing bolts 13. The pressing block 14 is arc-shaped. A first support frame 15 is fixedly connected to the top of the worktable 1. A first cylinder 16 is fixedly connected to the top of the first support frame 15. A round rod 17 is fixedly connected to the output end of the first cylinder 16. The round rod 17 is through-mounted and slidably connected to the first support frame 15; a square plate 18 is fixedly connected to the bottom of the round rod 17; a rotating seat 19 is installed in the middle of the square plate 18; the rotating seat 19 and the limiting ring 12 are correspondingly arranged; a vertical plate 101 is fixedly connected to the surface of the workbench 1; a second cylinder 102 is fixedly connected to the side wall of the vertical plate 101; a second support frame 103 is fixedly connected to the output end of the second cylinder 102; a gear hobbing assembly 104 is provided on the side wall of the second support frame 103; during operation, the camshaft is first inserted into the middle of the limiting ring 12, and then multiple fixing bolts 13 are rotated to push and compress it. Block 14 moves closer to the camshaft surface. Once close, it continues to push, pressing the block 14 and camshaft together. Then, the position of the fixing bolt 13 is adjusted to align their positions. Next, the first cylinder 16 is activated, causing it to drive the round rod 17 to push the square plate 18 closer to the camshaft end. The camshaft end then enters the rotating seat 19. Once inside, the round rod 17 pushes the square plate 18 to press the camshaft end, making it tightly pressed against the rotating seat 19. At this point, the camshaft is fixed. Then, the motor 11 is activated, causing it to rotate the limiting ring 12. When the limiting ring 12 rotates... The process involves rotating the camshaft, activating the second cylinder 102 to drive the second support frame 103, which in turn moves the gear hobbing assembly 104 closer to the camshaft. The hobbing assembly then contacts the camshaft for further processing. By using the fixing bolt 13, the internal space of the limiting ring 12 can be adjusted after the camshaft is placed, thus accommodating different camshafts. The second cylinder 102 then adjusts the contact between the gear hobbing assembly 104 and the camshaft for processing, increasing the flexibility in processing the camshaft. Simultaneously, the arc-shaped extrusion block 14 fits more closely to the camshaft surface during extrusion and fixation.

[0026] like Figures 1 to 5As shown, a pair of electromagnets 2 are fixed to the side wall of the second support frame 103; the electromagnets 2 are located below the gear hobbing assembly 104; during operation, when the gear hobbing assembly 104 and the camshaft are in contact, since it is two rotating objects in contact, friction will be generated during the contact, resulting in the falling of debris. When the debris falls, the electromagnets 2 can be activated to attract the falling debris and make it stay on the surface of the electromagnets 2; by increasing the number of electromagnets 2, the debris generated during processing can be attracted, thereby reducing the accumulation of debris after it falls, thereby increasing the concentration of debris. When the processing is finished, the processing container can be placed under the electromagnets 2, and then the electromagnets 2 are de-energized. At this time, the debris will fall into the container for rapid collection.

[0027] like Figures 1 to 5 As shown, a locking block 3 is fixedly connected to the bottom of the second support frame 103; the locking block 3 is located below the electromagnet 2; a collection box 31 is slidably fitted inside the locking block 3; during operation, when the electromagnet 2 is de-energized, the debris will fall into the collection box 31, and then the collection box 31 can be removed from the locking block 3 to handle the debris inside. Then, during installation, the locking block 3 and the collection box 31 are aligned and placed for installation; by adding the locking block 3 and the collection box 31, the debris can be quickly collected after the electromagnet 2 is de-energized, thus speeding up the handling of debris on the surface of the electromagnet 2.

[0028] like Figure 3 As shown, a ring 4 is fixedly connected to the end of the fixing bolt 13; the ring 4 and the fixing bolt 13 are correspondingly arranged; during operation, the ring 4 can be gripped when the fixing bolt 13 is rotated, and the ring 4 can be rotated to drive the fixing bolt 13 to rotate rapidly, thereby increasing the contact area with the fixing bolt 13 and thus increasing the force-bearing area of ​​the fixing bolt 13; by adding the ring 4, the fixing bolt 13 can be rotated rapidly through the increased force-bearing point of the ring 4, thereby driving the fixing bolt 13 to rotate rapidly, thereby increasing the rotation speed.

[0029] like Figure 3 As shown, multiple scale bars 5 are fixedly attached to the surface of the worktable 1; the scale bars 5 and the fixing bolts 13 are correspondingly arranged; during operation, after the fixing bolts 13 are rotated, the pressing block 14 will be pushed to contact the camshaft. At this time, the position of the fixed bolts 13 after rotation and the corresponding position of the scale bars 5 can be used to determine whether the multiple fixing bolts 13 have rotated to the same position; by adding scale bars 5, the position of the fixing bolts 13 can be quickly determined by the scale bars 5 after rotation, thereby increasing the centering of the camshaft position.

[0030] like Figure 3As shown, a flexible pad 6 is fixed to the inner wall of the extrusion block 14; the flexible pad 6 and the extrusion block 14 are correspondingly arranged; during operation, when the extrusion block 14 contacts the camshaft, the first cylinder 16 will first contact the camshaft. When in contact, the first cylinder 16 will deform as it is continuously squeezed by the extrusion block 14. When deformed, the flexible pad 6 will flatten, thereby increasing the contact area with the camshaft; by adding the flexible pad 6, the extrusion pressure generated by the extrusion block 14 can be weakened by the flexible blocking of the flexible pad 6 when the extrusion block 14 squeezes the camshaft, thereby reducing the extrusion pressure on the camshaft.

[0031] Working principle: First, the camshaft is inserted into the middle of the limiting ring 12. Then, multiple fixing bolts 13 are rotated to push the extrusion block 14 closer to the camshaft surface. Once it gets close, the extrusion block 14 is pushed to press tightly against the camshaft. Then, the position of the fixing bolts 13 is adjusted to make their movements consistent. Then, the first cylinder 16 is activated, causing the round rod 17 to push the square plate 18 closer to the end of the camshaft. Subsequently, the end of the camshaft enters the rotating seat 19. Once inside, the round rod 17 pushes the square plate 18 to extrude pressure on the end of the camshaft. The camshaft end and the rotating seat 19 are tightly attached, thus fixing the camshaft. Then, the motor 11 is started, causing the limiting ring 12 to rotate. When the limiting ring 12 rotates, it drives the camshaft to rotate. Then, the second cylinder 102 is started, causing it to drive the second support frame 103, bringing the gear hobbing assembly 104 closer to the camshaft. Processing occurs upon contact; when the gear hobbing assembly 104 and the camshaft contact, since it is two rotating objects, friction occurs, causing debris to fall off. When debris falls, electromagnet 2 can be activated to attract and hold the debris on its surface. When the electromagnet 2 is de-energized, the debris falls into collection box 31. Collection box 31 can then be removed from clip 3 to dispose of the debris. For installation, clip 3 and collection box 31 are aligned. When rotating fixing bolt 13, ring 4 can be gripped, causing it to rotate rapidly and increase the stability of fixing bolt 13. The contact area of ​​13 increases the force-bearing area of ​​the fixing bolt 13; after the fixing bolt 13 is rotated, it will push the extrusion block 14 to contact the camshaft. At this time, the position of the fixed bolt 13 after rotation and the corresponding position of the scale bar 5 can be used to determine whether multiple fixing bolts 13 are rotated to the same position; when the extrusion block 14 contacts the camshaft, the first cylinder 16 will contact the camshaft first. When contacting, the first cylinder 16 will deform as it is continuously extruded by the extrusion block 14. When deformed, the flexible pad 6 will be laid flat to increase the contact area with the camshaft.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A camshaft machining hobbing apparatus characterized by: Includes a workbench (1), with a motor (11) fixedly connected to the bottom of the workbench (1); a limit ring (12) is fixedly connected to the output end of the motor (11); the limit ring (12) is rotatably connected to the workbench (1); multiple fixing bolts (13) are threadedly connected to the side wall of the limit ring (12); a pressing block (14) is rotatably connected to the end of the fixing bolt (13); the pressing block (14) is arc-shaped; a first support frame (15) is fixedly connected to the top of the workbench (1); a first cylinder (16) is fixedly connected to the top of the first support frame (15); the output end of the first cylinder (16) is fixedly connected to the motor (11)... A round rod (17) is connected; the round rod (17) is through and slidably connected to the first support frame (15); a square plate (18) is fixedly connected to the bottom of the round rod (17); a rotating seat (19) is installed in the middle of the square plate (18); the rotating seat (19) and the limiting ring (12) are correspondingly arranged; a vertical plate (101) is fixedly connected to the surface of the workbench (1); a second cylinder (102) is fixedly connected to the side wall of the vertical plate (101); a second support frame (103) is fixedly connected to the output end of the second cylinder (102); a gear hobbing assembly (104) is provided on the side wall of the second support frame (103).

2. A camshaft machining hobbing device according to claim 1, characterized in that A pair of electromagnets (2) are fixed to the side wall of the second support frame (103); the electromagnets (2) are located below the gear hobbing assembly (104).

3. A camshaft machining hobbing apparatus according to claim 2, characterised in that: The bottom of the second support frame (103) is fixedly connected to a locking block (3); the locking block (3) is located below the electromagnet (2); a collection box (31) is slidably fitted inside the locking block (3).

4. A camshaft machining hobbing apparatus according to claim 3, characterised in that: A ring (4) is fixed to the end of the fixing bolt (13); the ring (4) and the fixing bolt (13) are arranged correspondingly.

5. A camshaft machining hobbing apparatus according to claim 4, characterised in that: The workbench (1) has multiple scale bars (5) fixedly attached to its surface; the scale bars (5) and the fixing bolts (13) are set accordingly.

6. A camshaft machining hobbing apparatus according to claim 5, characterised in that: A flexible pad (6) is fixed to the inner wall of the extrusion block (14); the flexible pad (6) and the extrusion block (14) are arranged correspondingly.

Images