Rapid trimming die for camshaft

Abstract

The utility model relates to the technical field of trimming dies, and discloses a rapid trimming die for a camshaft, which comprises a lower die, the bottom of the lower die is fixedly connected with a base, the lower die is internally provided with a placing groove, the lower die is internally and rotatably connected with the camshaft, the end part of the camshaft is provided with a clamping assembly, and the clamping assembly is fixedly connected with the base. The clamping assembly comprises a clamp, a base is arranged on one side of the outer wall of the clamp, a motor is arranged on one side of the outer wall of the base, a rotating shaft is fixedly connected to the output end of the motor, one end of the rotating shaft is fixedly connected to the outer wall of the clamp, and a fixing block is fixedly connected to the bottom of the base. The lower surface of the fixing block is fixedly connected with a first rack and a second rack. According to the cam shaft trimming die, the problems that when a traditional cam shaft trimming die is used for trimming, stable clamping and positioning of a cam shaft are difficult to achieve, and a cam shaft blank is prone to displacement or shaking in the trimming process are effectively avoided, and the effect of stable clamping of the cam shaft is achieved.

Description

Technical Field

[0001] This utility model relates to the field of edge trimming mold technology, and in particular to a rapid edge trimming mold for camshafts. Background Technology

[0002] The camshaft is one of the key components of an engine. Its main function is to control the opening and closing timing of the valves to ensure that the engine can work according to the predetermined working cycle and firing order. In the forming process of the camshaft, whether it is forging or casting, excess burrs and flash will be generated on the edge of the workpiece. These excess parts not only affect the appearance quality of the camshaft, but may also cause wear or interference to other components during subsequent assembly and use, reducing the performance and reliability of the engine.

[0003] When using a traditional camshaft trimming die, the die is first installed on the press and adjusted to ensure that the upper and lower die bases are in parallel and the blade gap is uniform. After confirming that there is no interference by no-load trial molding, the camshaft blank is cleaned of impurities and placed on the die worktable. Finally, the excess part of the blank edge is cut off to complete the trimming.

[0004] Traditional camshaft trimming dies struggle to achieve stable clamping and positioning of the camshaft during trimming, which can easily lead to displacement or wobbling of the camshaft blank during the trimming process. This results in deviations in trimming dimensional accuracy and uneven edge burrs. Furthermore, the cumbersome operation of changing different tools increases downtime, and frequent disassembly and assembly can cause the die positioning reference to shift, leading to unstable trimming quality. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a quick edge trimming die for camshafts, which aims to improve the problem that traditional camshaft edge trimming dies have difficulty in achieving stable clamping and positioning of the camshaft during edge trimming, which easily leads to displacement or shaking of the camshaft blank during the edge trimming process, resulting in deviations in edge trimming dimensional accuracy and uneven edge burrs.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a quick edge trimming mold for a camshaft, comprising a lower mold, a base fixedly connected to the bottom of the lower mold, a placement groove provided inside the lower mold, a camshaft rotatably connected inside the lower mold, and a clamping assembly provided at the end of the camshaft;

[0007] The clamping assembly includes a clamp, a base is provided on one side of the outer wall of the clamp, a motor is provided on one side of the outer wall of the base, a rotating shaft is fixedly connected to the output end of the motor, one end of the rotating shaft is fixedly connected to the outer wall of the clamp, a fixing block is fixedly connected to the bottom of the base, a rack and a rack are fixedly connected to the lower surface of the fixing block respectively, a gear is rotatably connected inside the base, a guide rail is fixedly connected to the inner wall of the bottom of the base, the outer walls of rack and rack are slidably connected to the outer wall of guide rail, a cylinder is provided on one side of the outer wall of the base, and the output end of cylinder is fixedly connected to rack.

[0008] Furthermore, the lower mold is provided with a cutting blade channel one and a cutting blade channel two. Cutting blade one and cutting blade two are slidably connected inside the lower mold. A cylinder three is provided on one side of the outer wall of the lower mold. A connecting plate is fixedly connected to the output end of the cylinder three. A connecting column one is fixedly connected to the outer wall of the connecting plate. A cylinder two is provided on the other side of the outer wall of the lower mold. A connecting column two is fixedly connected to the outer walls of both cutting blade one and cutting blade two. The connecting column two is slidably connected inside the connecting column one. A ring is fixedly connected to the outer wall of the connecting column one. A sliding sleeve is slidably connected to the outer wall of the connecting column one. A ball is slidably connected inside the sliding sleeve. A spring is fixedly connected to one end of the sliding sleeve.

[0009] Furthermore, the base has a sliding groove inside, and the outer wall of the fixing block is slidably connected inside the sliding groove.

[0010] Furthermore, an upper mold is provided above the lower mold, the clamp is provided at the end of the camshaft, the rack is fixedly connected to the output end of the cylinder, and the rack and rack are respectively meshed on both sides of the outer wall of the gear.

[0011] Furthermore, one end of the spring is fixedly connected to the inner wall of the connecting column, and the other end of the spring is fixedly connected to the outer wall of the sliding sleeve.

[0012] Furthermore, a guide rail is fixedly connected inside the cutting blade channel, and the outer wall of the cutting blade is slidably connected to the outer wall of the guide rail.

[0013] Furthermore, the rotating shaft is rotatably connected inside the base, and the outer walls of rack one and rack two are slidably connected inside the base.

[0014] Furthermore, the inner wall of the sliding sleeve is slidably connected to the outer wall of the ring, and the outer wall of the ball is slidably connected to the inside of connecting post one and connecting post two.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the cylinder pushes the rack to mesh with the gear, and the rack drives the fixing block and the base to move horizontally along the slide groove, thereby causing the clamp to clamp the end of the camshaft. Then, the motor drives the rotating shaft to rotate the camshaft in the placement groove. This solves the problem that traditional camshaft trimming molds are difficult to stably clamp and position the camshaft during trimming, which can easily cause the camshaft blank to shift or shake during trimming, resulting in deviations in trimming dimensional accuracy and uneven edge burrs. This invention achieves a stable clamping effect on the camshaft.

[0017] 2. In this utility model, by moving the axial sliding sleeve along the ring, the balls inside the sleeve are disengaged from the limiting groove of the connecting column two under the elastic reset action of the spring, thus releasing the locking between the first and second cutters and the first connecting column. After the sliding sleeve moves in the opposite direction, the balls are re-embedded into the slot of the second connecting column. The self-locking is achieved by the spring preload force, which solves the problems of cumbersome operation and increased downtime when changing different cutters, frequent disassembly and assembly that easily lead to the displacement of the mold positioning reference, and thus cause unstable cutting edge quality. This achieves the effect of quick cutter replacement. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a rapid edge-cutting mold for a camshaft proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of one side of the lower die of a camshaft quick trimming die proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of one side structure of a camshaft quick trimming mold for a camshaft proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the base of a camshaft quick trimming mold proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the connecting column of a camshaft quick-cutting mold proposed in this utility model.

[0023] Legend:

[0024] 1. Lower mold; 2. Upper mold; 3. Camshaft; 4. Fixture; 5. Base; 6. Motor; 7. Cylinder 1; 8. Cylinder 2; 9. Cylinder 3; 10. Slide groove; 11. Base; 12. Connecting plate; 13. Connecting column 1; 14. Cutting tool 1; 15. Guide rail 1; 16. Cutting tool channel 1; 17. Placement groove; 18. Connecting column 2; 19. Sliding sleeve; 20. Guide rail 2; 21. Fixing block; 22. Rack 1; 23. Gear; 24. Ring; 25. Ball bearing; 26. Spring; 27. Rack 2; 28. Rotating shaft; 29. ​​Cutting tool channel 2; 30. Cutting tool 2. Detailed Implementation

[0025] 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 protection scope of the present utility model.

[0026] Reference Figure 1 - Figure 5 This utility model provides an embodiment of a rapid edge-cutting mold for a camshaft, comprising a lower mold 1, which serves as the main structure of the mold and supports the camshaft 3, ensuring the accuracy of the positioning and cutting path of the camshaft 3. A base 11 is fixedly connected to the bottom of the lower mold 1, which reduces the impact of vibration on the processing accuracy. A placement groove 17 is provided inside the lower mold 1, and the camshaft 3 is rotatably connected inside the lower mold 1. A clamping assembly is provided at the end of the camshaft 3.

[0027] The clamping assembly includes a clamp 4, which clamps the end of the camshaft 3 and is fixedly connected to the rotating shaft 28, transmitting the rotational power of the motor 6 to the camshaft 3 to ensure uniform distribution of clamping force. A base 5 is provided on one side of the outer wall of the clamp 4, and a motor 6 is provided on one side of the outer wall of the base 5. The output end of the motor 6 is fixedly connected to the rotating shaft 28, and the output end of the motor 6 drives the clamp 4 to rotate through the rotating shaft 28. One end of the rotating shaft 28 is fixedly connected to the outer wall of the clamp 4. A fixing block 21 is fixedly connected to the bottom of the base 5, and rack 1 22 and rack 27 are fixedly connected to the lower surface of the fixing block 21, respectively. A gear 23 is rotatably connected inside the base 11, and a guide rail 20 is fixedly connected to the inner wall of the bottom of the base 11. The outer walls of rack 1 22 and rack 27 are slidably connected to the outer wall of the guide rail 20. The guide rail 20 is used to constrain the movement direction of the racks, reduce friction loss, and improve transmission stability. A cylinder is provided on one side of the outer wall of the base 11. Cylinder 7 pushes rack 22 to move linearly, controlling the clamping and releasing of clamp 4. Cylinder 7 is fixedly connected to rack 22. The lower mold 1 is provided with cutting knife channel 16 and cutting knife channel 29. Cutting knife 14 and cutting knife 20 are slidably connected inside the lower mold 1. Cylinder 39 is provided on one side of the outer wall of the lower mold 1. Connecting plate 12 is fixedly connected to the output end of cylinder 39. Connecting column 13 is fixedly connected to the outer wall of connecting plate 12. Cylinder 28 is provided on the other side of the outer wall of the lower mold 1. Connecting column 28 is fixedly connected to the outer walls of cutting knife 14 and cutting knife 20. Connecting column 28 is slidably connected inside connecting column 13. Ring 24 is fixedly connected to the outer wall of connecting column 13. Sliding sleeve 19 is slidably connected to the outer wall of connecting column 13. Ball bearing 25 is slidably connected inside sliding sleeve 19. Spring 26 is fixedly connected to one end of sliding sleeve 19.

[0028] Reference Figure 1 - Figure 5 The base 11 has a sliding groove 10 inside, and the outer wall of the fixing block 21 is slidably connected to the sliding groove 10. The upper mold 2 is set above the lower mold 1. The clamp 4 is set at the end of the camshaft 3. The rack 1 22 is fixedly connected to the output end of the cylinder 1 7. The rack 1 22 and the rack 2 27 are respectively meshed on both sides of the outer wall of the gear 23. The gear 23 converts the linear motion of the cylinder 1 7 into the synchronous reverse motion of the rack 1 22 and the rack 2 27 to ensure symmetrical clamping action. One end of the spring 26 is fixedly connected to the inner wall of the connecting column 13, and the other end of the spring 26 is fixedly connected to the outer wall of the sliding sleeve 19. A guide rail is fixedly connected inside the cutting blade channel 16. The outer wall of the tool 14 is slidably connected to the outer wall of the guide rail 15. The rotating shaft 28 is rotatably connected to the inside of the base 5. The outer walls of rack 12 and rack 27 are slidably connected to the inside of the base 11. The inner wall of the sliding sleeve 19 is slidably connected to the outer wall of the ring 24. The ring 24 is fixed to the outer wall of the connecting column 13, constraining the axial movement path of the sliding sleeve 19 and ensuring stable tool changing action. The outer wall of the ball 25 is slidably connected to the inside of the connecting column 13 and the connecting column 28. The ball 25 is slidably connected to the inside of the sliding sleeve 19 and is embedded in the limiting groove of the connecting column 28. The tool is locked by the preload of the spring 26. When changing the tool, it is released from the groove and unlocked.

[0029] Working principle: First, the output end of cylinder 7 drives rack 22 to mesh with gear 23. Through the linkage between gear 23 and rack 27, the base 5 on the fixed block 21 moves horizontally along the slide groove 10, thereby driving the clamp 4 to clamp the end of the camshaft 3. Then, the motor 6 is started, driving the rotating shaft 28 to rotate the camshaft 3 in the placement groove 17, realizing the precise alignment and stable clamping of the clamp 4 and the camshaft 3. During the cutting process, cylinder 9 pushes the connecting column 13 towards the center of the mold through the connecting plate 12, driving the tool 14 to slide along the guide rail 15 in the cutting tool channel 16. At the same time, cylinder 8 drives the connecting column 18 on the other side to move together, so that the tool 30 cuts... The tool channel 29 feeds synchronously in opposite directions, and the two tools simultaneously cut the rotating camshaft 3 from both sides, improving processing efficiency and surface flatness. In addition, when changing tools quickly, the operator slides the sliding sleeve 19 axially, moving it along the outer wall of the ring 24. At this time, the ball 25 inside the sliding sleeve 19 is released from the limiting groove of the connecting column 2 18 under the elastic reset action of the spring 26, releasing the locking state between the tool 1 14, the tool 2 30 and the connecting column 1 13, realizing the instantaneous separation of the tools. After replacement, sliding the sliding sleeve 19 in the opposite direction can make the ball 25 re-embed into the corresponding slot of the connecting column 2 18, and self-locking is achieved by the preload of the spring 26, realizing the effect of quick tool changing.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick trimming die for a camshaft, comprising a lower die (1), characterized in that: The bottom of the lower mold (1) is fixedly connected to a base (11), the lower mold (1) is provided with a placement groove (17), the lower mold (1) is rotatably connected to a camshaft (3), and the end of the camshaft (3) is provided with a clamping assembly. The clamping assembly includes a clamp (4), a base (5) is provided on one side of the outer wall of the clamp (4), a motor (6) is provided on one side of the outer wall of the base (5), a rotating shaft (28) is fixedly connected to the output end of the motor (6), one end of the rotating shaft (28) is fixedly connected to the outer wall of the clamp (4), a fixing block (21) is fixedly connected to the bottom of the base (5), a rack one (22) and a rack two (27) are fixedly connected to the lower surface of the fixing block (21), a gear (23) is rotatably connected inside the base (11), a guide rail two (20) is fixedly connected to the inner wall of the bottom of the base (11), the outer walls of the rack one (22) and the rack two (27) are slidably connected to the outer wall of the guide rail two (20), a cylinder one (7) is provided on one side of the outer wall of the base (11), and the output end of the cylinder one (7) is fixedly connected to the rack one (22).

2. A quick trim die for a camshaft as defined in claim 1, characterized in that: The lower mold (1) is provided with a cutting blade channel one (16) and a cutting blade channel two (29) inside. A cutting blade one (14) and a cutting blade two (30) are slidably connected inside the lower mold (1). A cylinder three (9) is provided on one side of the outer wall of the lower mold (1). A connecting plate (12) is fixedly connected to the output end of the cylinder three (9). A connecting column one (13) is fixedly connected to the outer wall of the connecting plate (12). A cylinder two is provided on the other side of the outer wall of the lower mold (1). (8) Both the outer walls of the first cutter (14) and the second cutter (30) are fixedly connected to the second connecting post (18). The second connecting post (18) is slidably connected inside the first connecting post (13). The outer wall of the first connecting post (13) is fixedly connected to the ring (24). The outer wall of the first connecting post (13) is slidably connected to the sleeve (19). The inside of the sleeve (19) is slidably connected to the ball (25). One end of the sleeve (19) is fixedly connected to the spring (26).

3. A quick trim die for a camshaft as defined in claim 1, wherein: The base (11) has a sliding groove (10) inside, and the outer wall of the fixing block (21) is slidably connected to the inside of the sliding groove (10).

4. A quick trim die for a camshaft as defined in claim 1, wherein: The upper mold (2) is provided above the lower mold (1), the clamp (4) is provided at the end of the camshaft (3), the rack one (22) is fixedly connected to the output end of the cylinder one (7), and the rack one (22) and rack two (27) are respectively meshed on both sides of the outer wall of the gear (23).

5. A quick trim die for a camshaft as defined in claim 2, wherein: One end of the spring (26) is fixedly connected to the inner wall of the connecting column (13), and the other end of the spring (26) is fixedly connected to the outer wall of the sliding sleeve (19).

6. A quick trim die for a camshaft as defined in claim 2, wherein: The cutting blade channel (16) is fixedly connected to the guide rail (15), and the outer wall of the cutting blade (14) is slidably connected to the outer wall of the guide rail (15).

7. A quick trim die for a camshaft as defined in claim 1, wherein: The rotating shaft (28) is rotatably connected to the inside of the base (5), and the outer walls of the rack one (22) and rack two (27) are slidably connected to the inside of the base (11).

8. A quick trim die for a camshaft as defined in claim 2, wherein: The inner wall of the sliding sleeve (19) is slidingly connected to the outer wall of the circular ring (24), and the outer wall of the ball (25) is slidingly connected to the inside of the connecting column I (13) and the connecting column II (18).

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