Multi-angle tool for cylinder head machining

Abstract

The present application relates to a kind of multi-angle tooling for cylinder head machining, including bottom plate and tooling assembly, further comprising: angle adjusting mechanism, including the rotating plate for installing tooling assembly, rotating plate one end is provided with rotating shaft, rotating shaft is rotationally connected with the rotating seat being set on the surface of bottom plate, the other end of rotating plate is driven lifting by threaded rod.This tooling is through setting hydraulic cylinder and threaded structure mutually antagonize, eliminate the thread gap of threaded structure, so that utilize threaded tension and hydraulic thrust are completely fixed, also set up fixed rim and arc-shaped through slot so that tooling body itself can rotate, two dimensions are angle adjusted, and also set up rotating shaft locking structure, improve the overall anti-vibration performance, prevent vibration from affecting machining precision.

Description

Technical Field

[0001] This invention belongs to the field of cylinder head processing technology, specifically relating to a multi-angle tooling for cylinder head processing. Background Technology

[0002] When machining the cylinder head, because there are a large number of oblique holes on the cylinder head, the cylinder head needs to be tilted and fixed. When performing precision machining such as cutting and drilling, the workpiece (cylinder head) needs to be fully tightened and fixed with bolts to prevent the workpiece from vibrating during the machining process, which would reduce the machining accuracy.

[0003] Most common multi-angle adjustment fixtures have a rotating end and a threaded structure or hydraulic cylinder structure for adjusting the angle. However, the threaded structure has thread clearance, the hydraulic cylinder structure cannot resist back-and-forth vibration, and the rotating end of the multi-angle fixture is often connected by a bearing. The bearing also has room for wobbling under long-term vibration. Therefore, for cutting and drilling, multi-angle adjustment fixtures have the problem of not being fixed tightly. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-angle tooling for cylinder head machining in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A multi-angle tooling for cylinder head machining includes a base plate and tooling components, and further includes:

[0007] An angle adjustment mechanism includes a rotating plate for mounting tooling components. One end of the rotating plate is provided with a rotating shaft, which is rotatably connected to a rotating seat provided on the surface of a base plate. The other end of the rotating plate is adjusted for angle via a threaded rod.

[0008] The first reinforcing component, used to tighten the thread clearance of the threaded rod, includes a hydraulic cylinder rotatably connected to the surface of the base plate, the output end of the hydraulic cylinder being hinged to the end of the rotating plate near the threaded rod;

[0009] The second reinforcing component is used to reinforce the rotational gap between the rotating shaft and the rotating seat. It includes a cylindrical block disposed at the end of the rotating shaft. The cylindrical block has several hydraulically protruding top blocks inside its circumferential surface for supporting the inner wall of the rotating seat.

[0010] As a further optimization of the present invention, the tooling assembly includes a tooling body for fixing the cylinder head and a fixing edge for connecting the tooling body and the rotating plate. The surface of the rotating plate is provided with a plurality of arc-shaped through grooves distributed on the same circumference. The surface of the fixing edge is provided with a plurality of fixing bolts distributed along the circumference and corresponding to the arc-shaped through grooves. The number of fixing bolts is at least twice that of the arc-shaped through grooves. Due to the limited rotation range of the rotating plate, there are oblique holes in the cylinder head, which may cause the oblique holes to never face directly upwards no matter how the rotating plate is adjusted. Therefore, the arc-shaped through grooves and twice the number of fixing bolts are provided so that the fixing edge can be freely rotated and adjusted in angle when fixed to the rotating plate. When the fixing edge is fixed, the fixing bolts not located in the arc-shaped through grooves do not participate in the fixing.

[0011] As a further optimization of the present invention, the angle adjustment mechanism further includes a drive device for driving the threaded rod to rotate. The drive device includes an outer cylinder rotatably disposed on the surface of the base plate. Inside the outer cylinder, a threaded cylinder corresponding to the threaded rod is rotatably connected via a thrust bearing. The surface of the outer cylinder is also provided with a motor for driving the threaded cylinder to rotate. One end of the outer surface of the threaded cylinder is provided with a gear corresponding to the motor. The threaded rod is used to adjust the angle of the rotating plate. The thread clearance of the threaded rod is counteracted and eliminated by the first reinforcement component. After the angle adjustment is completed, the threaded rod and the threaded cylinder are under stress, so that the threaded rod exerts a pulling force on the rotating plate, while the hydraulic cylinder exerts a thrust force, thereby eliminating the thread clearance. For this purpose, the threaded cylinder and the outer cylinder are connected by a thrust bearing, which is a bearing specifically designed to bear axial loads.

[0012] As a further optimization of the present invention, the end of the rotating plate that is hinged to the threaded rod is provided with a dumbbell-shaped connecting end. The two inner surfaces of the dumbbell-shaped connecting end are tapered surfaces, and the end of the threaded rod is provided with a connector that is adapted to the shape of the connecting end. The threaded rod and the rotating plate need to be hinged together. In order to solve the shaking problem, the tapered surface is provided so that when the threaded rod forms tension, the connector and the connecting end are pressed against each other through the tapered surface.

[0013] As a further optimization of the present invention, the output end of the hydraulic cylinder is hinged to the rotating plate through a sliding cylinder. The sliding cylinder and the end of the hydraulic cylinder are slidably arranged, and a spring is also provided between the sliding cylinder and the hydraulic cylinder. When adjusting the angle of the rotating plate, in order to ensure the adjustment accuracy and eliminate the thread gap, the spring is provided to provide lifting force for the rotating plate.

[0014] As a further optimization of the present invention, the end of the rotating seat is provided with a rotating groove corresponding to the cylindrical block, the inner wall of the rotating groove is provided with an annular groove corresponding to the top block, the cylindrical block is provided with a hydraulic cavity, a piston rod is slidably connected inside the hydraulic cavity, the circumferential surface of the piston rod is provided with a wide thread, the inside of the cylindrical block is provided with a wide grooved cylinder corresponding to the wide thread, the outer surface of the cylindrical block is provided with a through cavity, the top block is rotatably connected to the side wall of the through cavity, the outer surface of the wide grooved cylinder is provided with a hinge for pushing the top block to rotate, the contact surface between the top block and the annular groove is provided with an angle, the top block extends synchronously under this drive, maintaining high coaxiality, reducing shaking while not changing the axial position of the rotating shaft.

[0015] The beneficial effects of this invention are as follows:

[0016] This invention eliminates thread clearance by setting up a hydraulic cylinder and a threaded structure to counteract each other, allowing for complete fixation using thread tension and hydraulic thrust. It also features a fixing edge and an arc-shaped through groove to allow the tooling body to rotate, enabling angle adjustment in two dimensions. Furthermore, it incorporates a rotating shaft locking structure, which improves overall vibration resistance and prevents vibration from affecting machining accuracy. Attached Figure Description

[0017] Figure 1 This is a front view of the overall structure of the present invention;

[0018] Figure 2 This is a side view of the overall structure of the present invention;

[0019] Figure 3 This is a top view of the rotating plate and fixed edge structure of the present invention;

[0020] Figure 4 This is a top view of the rotating plate structure of the present invention;

[0021] Figure 5 This is the invention Figure 1 Enlarged view of the structure of section A in the middle;

[0022] Figure 6 This is the invention Figure 2 Enlarged view of the structure of section B;

[0023] Figure 7 This is a side sectional view of the cylindrical block structure of the present invention;

[0024] Figure 8 This is a cross-sectional view of the connection end structure of the present invention;

[0025] Figure 9 This is a perspective view of the tooling body of the present invention;

[0026] In the diagram: 1. Base plate; 2. Angle adjustment mechanism; 21. Outer cylinder; 22. Threaded cylinder; 23. Threaded rod; 24. Rotary seat; 2401. Rotary groove; 2402. Annular groove; 25. Rotary shaft; 26. Rotary plate; 2601. Arc-shaped through groove; 27. Connecting end; 28. Gear; 29. ​​Motor; 3. Tooling assembly; 31. Fixing edge; 32. Tooling body; 33. Fixing bolt; 4. First reinforcing assembly; 41. Hydraulic cylinder; 42. Sliding cylinder; 43. Spring; 5. Second reinforcing assembly; 51. Cylindrical block; 52. Hydraulic chamber; 53. Piston column; 54. Wide thread; 55. Wide threaded cylinder; 56. Hinge; 57. Through cavity; 58. Top block; 6. Hydraulic pump assembly. Detailed Implementation

[0027] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0028] Example 1

[0029] like Figure 1-9 As shown, a multi-angle tooling for cylinder head machining includes a base plate 1 and a tooling assembly 3, and further includes:

[0030] Angle adjustment mechanism 2 includes a rotating plate 26 for mounting tooling assembly 3. One end of the rotating plate 26 is provided with a rotating shaft 25, which is rotatably connected to a rotating seat 24 provided on the surface of the base plate 1. The other end of the rotating plate 26 is adjusted by a threaded rod 23.

[0031] The first reinforcing component 4, used to tighten the thread clearance of the threaded rod 23, includes a hydraulic cylinder 41 rotatably connected to the surface of the base plate 1, and the output end of the hydraulic cylinder 41 is hinged to one end of the rotating plate 26 near the threaded rod 23.

[0032] The second reinforcing component 5 is used to reinforce the rotational gap between the rotating shaft 25 and the rotating seat 24. It includes a cylindrical block 51 disposed at the end of the rotating shaft 25. The cylindrical block 51 has a plurality of hydraulically protruding top blocks 58 disposed inside the circumferential surface for supporting the inner wall of the rotating seat 24.

[0033] Hydraulic pump assembly 6 is used to provide hydraulic power to hydraulic cylinder 41 and hydraulic chamber 52.

[0034] The angle is adjusted by driving the rotating plate 26 with the threaded rod 23, so that the tooling assembly 3 rotates along the rotating shaft 25. The thread clearance of the threaded rod 23 is tightened by the first reinforcing assembly 4 to prevent the thread clearance from causing shaking. The threaded rod 23 forms pressure on the rotating plate 26, while the hydraulic cylinder 41 forms thrust. The forces cancel each other out to achieve the tightening effect after adjustment. In order to prevent the rotating shaft 25 from vibrating, the top block is also tightened after the 58-degree angle adjustment is completed.

[0035] The tooling assembly 3 includes a tooling body 32 for fixing the cylinder head and a fixing edge 31 for connecting the tooling body 32 and the rotating plate 26. The rotating plate 26 has a plurality of arc-shaped through grooves 2601 on its surface, which are distributed on the same circumference. The fixing edge 31 has a plurality of fixing bolts 33 distributed along the circumference and corresponding to the arc-shaped through grooves 2601. The number of fixing bolts 33 is at least twice that of the arc-shaped through grooves 2601.

[0036] Due to the limited rotation range of the rotating plate 26, there is an oblique hole in the cylinder head, which may prevent the oblique hole from facing directly upwards no matter how the rotating plate 26 is adjusted. Therefore, an arc-shaped through groove 2601 and twice the number of fixing bolts 33 are provided to solve this problem, so that the fixing edge 31 can rotate freely to adjust the angle when it is fixed to the rotating plate 26. When the fixing edge 31 is fixed, the fixing bolts 33 that are not in the arc-shaped through groove 2601 do not participate in the fixing. The purpose of providing twice the number of fixing bolts 33 is to make up for the discontinuity of the arc-shaped through groove 2601, so as to achieve the purpose of fixing the working component 3 360°.

[0037] The angle adjustment mechanism 2 also includes a drive device for driving the threaded rod 23 to rotate. The drive device includes an outer cylinder 21 that is rotatably mounted on the surface of the base plate 1. The inner side of the outer cylinder 21 is rotatably connected to a threaded cylinder 22 corresponding to the threaded rod 23 via a thrust bearing. The surface of the outer cylinder 21 is also provided with a motor 29 for driving the threaded cylinder 22 to rotate. One end of the outer surface of the threaded cylinder 22 is provided with a gear 28 corresponding to the motor 29.

[0038] The threaded rod 23 is used to adjust the angle of the rotating plate 26. The thread clearance of the threaded rod 23 is eliminated by the first reinforcing component 4. After the angle adjustment is completed, the threaded rod 23 and the threaded cylinder 22 are under stress, so that the threaded rod 23 exerts a pulling force on the rotating plate 26, while the hydraulic cylinder 41 exerts a thrust force to eliminate the thread clearance. An axial force is formed between the threaded cylinder 22 and the outer cylinder 21. Therefore, the two are connected by a thrust bearing, which is a bearing specifically designed to bear axial loads.

[0039] Furthermore, the end of the rotating plate 26 that is hinged to the threaded rod 23 is provided with a dumbbell-shaped connecting end 27. The two inner surfaces of the dumbbell-shaped connecting end 27 are tapered surfaces, and the end of the threaded rod 23 is provided with a connector that is adapted to the shape of the connecting end 27. The threaded rod 23 and the rotating plate 26 need to be hinged. In order to solve the wobbling problem, the tapered surface is provided so that when the threaded rod 23 generates tension, the connector and the connecting end 27 are pressed against each other through the tapered surface.

[0040] The output end of the hydraulic cylinder 41 is hinged to the rotating plate 26 via a sliding cylinder 42. The sliding cylinder 42 and the end of the hydraulic cylinder 41 are slidably connected, and a spring 43 is also provided between the sliding cylinder 42 and the hydraulic cylinder 41. To ensure adjustment accuracy and eliminate thread clearance, the spring provides lifting force to the rotating plate. It should be explained that the rotation of the threaded cylinder 22 pushes the threaded rod 23 upward through the thread, and the threaded rod 23 pushes the rotating plate 26 upward. During this process, the threaded rod 23 provides thrust, so the upper edge of the thread of the threaded cylinder 22 and the lower edge of the thread of the threaded rod 23 are pressed together. After the angle adjustment is completed, the hydraulic cylinder 41 operates, and the process of eliminating thread clearance will cause the threaded cylinder 22 to move upward. The thrust of the threaded rod 23 becomes a tension, so the lower edge of the threaded cylinder 22 is pressed against the upper edge of the threaded rod 23. The change in thread clearance makes the originally adjusted angle no longer accurate. To solve this problem, a spring 43 is set. When adjusting the angle, the hydraulic cylinder 41 also performs a corresponding pushing action, so that the spring 43 maintains an upward pushing force. The threaded cylinder 22 no longer plays the role of driving the lifting and lowering, but only plays the role of adjusting the pull-back. This setting can ensure that the lower edge of the threaded cylinder 22 is always pressed against the upper edge of the threaded rod 23, and the thread clearance will not change before and after the rotating plate 26 is adjusted, so the angle adjustment is more accurate.

[0041] The end of the rotating seat 24 is provided with a rotating groove 2401 corresponding to the cylindrical block 51. The inner wall of the rotating groove 2401 is provided with an annular groove 2402 corresponding to the top block 58. The cylindrical block 51 is provided with a hydraulic chamber 52. A piston rod 53 is slidably connected inside the hydraulic chamber 52. The circumferential surface of the piston rod 53 is provided with a wide thread 54. The inside of the cylindrical block 51 is provided with a wide grooved cylinder 55 corresponding to the wide thread 54. The outer surface of the cylindrical block 51 is provided with a through cavity 57. The top block 58 is rotatably connected to the side wall of the through cavity 57. The outer surface of the wide grooved cylinder 55 is provided with a hinge 56 that pushes the top block 58 to rotate. Through hydraulic drive, one end of the piston rod 53 drives the wide grooved cylinder 55 to rotate. The wide grooved cylinder 55 drives the top block 58 to rotate and extend synchronously, and is supported tightly against the inner wall of the rotating seat 24. This provides support without changing the axial position of the rotating shaft 25, thus solving the problem of the rotating shaft 25 shaking.

[0042] The specific implementation method is as follows: First, the fixing edge 31 of the tooling assembly 3 is adjusted to a suitable angle, and then fixed by the fixing bolt 33. The hydraulic cylinder 41 is driven by the hydraulic pump assembly 6 to support the rotating plate 26. At the same time, the motor 29 moves to release the threaded rod 23. After the angle adjustment is completed, the hydraulic cylinder 41 increases the pressure and presses against the rotating plate 26 to form resistance, eliminate the thread gap, and the top block 58 is pushed out under hydraulic drive to fasten the rotating shaft 25.

[0043] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A multi-angle tooling for cylinder head machining, comprising a base plate (1) and a tooling assembly (3), characterized in that: Also includes: Angle adjustment mechanism (2) includes a rotating plate (26) for mounting tooling assembly (3), one end of the rotating plate (26) is provided with a rotating shaft (25), the rotating shaft (25) is rotatably connected to a rotating seat (24) provided on the surface of the base plate (1), and the other end of the rotating plate (26) is adjusted by a threaded rod (23); The first reinforcing component (4), used to tighten the thread clearance of the threaded rod (23), includes a hydraulic cylinder (41) rotatably connected to the surface of the base plate (1), the output end of the hydraulic cylinder (41) being hinged to one end of the rotating plate (26) near the threaded rod (23); The second reinforcing component (5) is used to reinforce the rotation gap between the rotating shaft (25) and the rotating seat (24), including a cylindrical block (51) disposed at the end of the rotating shaft (25). The cylindrical block (51) has several top blocks (58) that are hydraulically pushed out inside the circumferential surface, which are used to support the inner wall of the rotating seat (24). The rotating seat (24) has a rotating groove (2401) at its end corresponding to the cylindrical block (51). The inner wall of the rotating groove (2401) has an annular groove (2402) corresponding to the top block (58). The cylindrical block (51) has a hydraulic cavity (52) inside. The hydraulic cavity (52) is slidably connected to a piston column (53). The circumferential surface of the piston column (53) is provided with a wide thread (54). The cylindrical block (51) has a wide groove cylinder (55) corresponding to the wide thread (54) inside. The outer surface of the cylindrical block (51) has a through cavity (57). The top block (58) is rotatably connected to the side wall of the through cavity (57). The outer surface of the wide groove cylinder (55) is provided with a hinge (56) that pushes the top block (58) to rotate. The contact surface between the top block (58) and the annular groove (2402) is provided with an angle.

2. The multi-angle tooling for cylinder head machining according to claim 1, characterized in that: The tooling assembly (3) includes a tooling body (32) for fixing the cylinder head and a fixing edge (31) for connecting the tooling body (32) and the rotating plate (26). The rotating plate (26) has a plurality of arc-shaped through grooves (2601) on its surface, which are distributed on the same circumference. The fixing edge (31) has a plurality of fixing bolts (33) distributed along the circumference and corresponding to the arc-shaped through grooves (2601). The number of fixing bolts (33) is at least twice that of the arc-shaped through grooves (2601).

3. The multi-angle tooling for cylinder head machining according to claim 1, characterized in that: The angle adjustment mechanism (2) further includes a drive device for driving the threaded rod (23) to rotate. The drive device includes an outer cylinder (21) rotatably disposed on the surface of the base plate (1). The inner side of the outer cylinder (21) is rotatably connected to a threaded cylinder (22) corresponding to the threaded rod (23) through a thrust bearing. The surface of the outer cylinder (21) is also provided with a motor (29) for driving the threaded cylinder (22) to rotate. One end of the outer surface of the threaded cylinder (22) is provided with a gear (28) corresponding to the motor (29).

4. The multi-angle tooling for cylinder head machining according to claim 1, characterized in that: The rotating plate (26) is hinged to the threaded rod (23) and is provided with a dumbbell-shaped connecting end (27). The two inner surfaces of the dumbbell-shaped connecting end (27) are tapered, and the end of the threaded rod (23) is provided with a connector that is adapted to the shape of the connecting end (27).

5. The multi-angle tooling for cylinder head machining according to claim 1, characterized in that: The output end of the hydraulic cylinder (41) is hinged to the rotating plate (26) through the sliding cylinder (42). The sliding cylinder (42) and the end of the hydraulic cylinder (41) are slidably arranged, and a spring (43) is also provided between the sliding cylinder (42) and the hydraulic cylinder (41).

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