A top clamp device for motorcycle cylinder head machining or detection

Abstract

A motorcycle cylinder head machining or detection is tightly arranged, including fixed seat, fixed seat is provided with hollow inner chamber, the middle part of inner chamber is provided with two opposite circular arc inner thread grooves, and the space for the spacer of pressing plate is left, the left and right sides of inner chamber are respectively provided with the guide groove of vertical drive guide block, and the space for the spacer of pressing plate is communicated, the left and right ends of pressing plate are fixedly connected with vertical drive guide block, the lower end of vertical drive guide block is equipped with wedge part, vertical drive guide block is slidably connected with each guide groove, the front and rear walls of fixed seat are respectively provided with assembly hole, horizontal tightening mechanism is slidably connected in assembly hole, the front and rear walls of fixed seat are provided with limiting plate, the jacking rod of one end of horizontal tightening mechanism extends out of limiting plate, the other end is provided with horizontal drive block, the assembly hole is communicated with guide groove, the large diameter section of one stepped thread column is threadedly connected in circular arc inner thread groove, the small diameter section of stepped thread column extends out of cover plate and is fixedly connected with rotating handle.

Description

Technical Field

[0001] This invention belongs to the field of cylinder head processing technology, and in particular relates to a clamping device for processing or inspecting motorcycle cylinder heads. Background Technology

[0002] The cast motorcycle cylinder head needs to be hoisted onto a positioning fixture plate to fix it in place before further processing. The positioning fixture plate is equipped with a clamping mechanism and a positioning mechanism. The clamping mechanism is used to clamp the cylinder head vertically, and the positioning mechanism is used to limit the bottom of the cylinder head. The positioning mechanism is a vertically protruding stop block used to abut the cylinder head horizontally. After the cylinder head is abutted against the stop block, the clamping mechanism presses the cylinder head down from top to bottom before proceeding with the subsequent processing steps.

[0003] Currently, the process of aligning the motorcycle cylinder head with the stop block is done manually. However, manual operation is prone to omissions or incomplete execution, which can lead to machining deviations and product scrap during subsequent processing. Therefore, solving these problems has become a key research focus. Summary of the Invention

[0004] The purpose of this application is to address the problems existing in the prior art by proposing a clamping device for machining or inspecting motorcycle cylinder heads. The lower end of the device is fixedly connected to a tooling plate, and the upper end of the device is equipped with a rotating handle. The rotating handle is connected to a vertical drive guide block through a stepped threaded column in the inner cavity of the fixed seat. Horizontal clamping mechanisms are provided on the front and rear walls of the device. When the rotating handle is rotated, the stepped threaded column moves downward, and the vertical drive guide block drives the horizontal clamping mechanism to move horizontally, thereby clamping the motorcycle cylinder heads on both sides. The device has a simple structure, and the workpieces on both sides can be clamped simultaneously by rotating the rotating handle mechanically, without the need for an additional drive device. The device has a high degree of flexibility and a constant output force, avoiding omissions or incomplete operations caused by manual operation.

[0005] The objective of this invention is achieved as follows.

[0006] A clamping device for machining or inspecting a motorcycle cylinder head includes a fixed base with a hollow inner cavity. Two opposing arc-shaped internal threaded grooves are provided in the center of the inner cavity, with space between the two grooves for a pressure plate to accommodate. Guide grooves for vertical drive guide blocks are provided on the left and right sides of the inner cavity, communicating with the space provided by the pressure plate. The left and right ends of the pressure plate are fixedly connected to the upper ends of the vertical drive guide blocks. A wedge-shaped portion is provided at the lower end of each vertical drive guide block, which slides in conjunction with the guide grooves. The fixed base is located on the front and rear walls of the guide grooves respectively. An assembly hole with a horizontal clamping mechanism is provided, the horizontal clamping mechanism being slidably fitted in the assembly hole. Limiting plates are installed on the front and rear walls of the fixed seat. One end of the horizontal clamping mechanism is provided with a push rod extending out of the limiting plate, and the other end of the horizontal clamping mechanism is provided with a horizontal drive block. A return spring is installed in the assembly hole to buffer the push rod. The assembly hole is connected to a guide groove. A cover plate is fixedly connected to the upper end of the fixed seat. The large diameter section of a stepped threaded column is threaded in the arc-shaped internal thread groove. The small diameter section of the stepped threaded column extends upward out of the cover plate and is fixedly connected to a rotating handle. The lower end of the large diameter section is connected to a pressure plate.

[0007] Furthermore, the horizontal clamping mechanism also includes a connecting column, which is disposed between the push rod and the horizontal drive block. The two end faces of the connecting column are respectively provided with a first blind hole and a second blind hole. The push rod is installed in the first blind hole and passes through the limiting plate. The return spring is disposed on the outer wall of the push rod located in the first blind hole. The opposing surfaces of the horizontal drive block and the connecting column are provided with a third blind hole. A force-applying spring is installed in the second blind hole and the third blind hole.

[0008] Furthermore, the cross-section of the connecting column is circular.

[0009] Furthermore, the cross-section of the horizontal drive block is a rounded rectangle.

[0010] Furthermore, the contact surfaces of the horizontal drive block and the vertical drive guide block are provided with wedge-shaped portions.

[0011] Furthermore, the stepped threaded column has symmetrically arranged tangent plane sections on both sides of the minor diameter section, and the lower end face of the rotating handle has a groove. The tangent plane section is inserted into the groove, so that the minor diameter section and the rotating handle form a circumferential limit. The minor diameter section is threadedly connected to the rotating handle.

[0012] Furthermore, a limiting groove is provided on the lower end face of the large diameter section of the stepped threaded column, and a guide column is provided in the middle of the pressure plate. The upper end of the guide column passes through the pressure plate and is inserted into the limiting groove. The lower end of the guide column has a gap between it and the inner wall of the fixed seat for the downward stroke.

[0013] Furthermore, the upper end face of the guide post is arc-shaped.

[0014] Furthermore, the fixing seat has inwardly recessed grooves in the middle of the front and rear outer walls, and the arc-shaped internal thread grooves are respectively provided in the inner walls of the two grooves.

[0015] Using the above solution, the clamping device for machining or testing motorcycle cylinder heads of the present invention is simple to operate, highly efficient, highly flexible, and outputs a constant force, avoiding omissions or inadequate operation caused by manual operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is an exploded view of the present invention.

[0018] Figure 3 This is a diagram of the internal structure of the present invention.

[0019] Figure 4 for Figure 1 A schematic diagram of direction A.

[0020] Figure 5 for Figure 4 A sectional view along line AA.

[0021] Figure 6 for Figure 4 BB-direction sectional view.

[0022] Figure 7 for Figure 4 CC-direction sectional view.

[0023] Figure 8 for Figure 4 DD section view.

[0024] Figure 9 for Figure 1 A schematic diagram of direction B.

[0025] Figure 10 for Figure 9 EE-directed sectional view.

[0026] Explanation of reference numerals in the attached drawings: 1. Fixed seat; 2. Circular internal thread groove; 3. Pressure plate; 4. Vertical drive guide block; 5. Guide groove; 6. Wedge-shaped part; 7. Assembly hole; 8. Limiting plate; 9. Top rod; 10. Horizontal drive block; 11. Return spring; 12. Cover plate; 13. Large diameter section; 14. Small diameter section; 15. Rotating handle; 16. Connecting post; 17. First blind hole; 18. Second blind hole; 19. Third blind hole; 20. Force spring; 21. Limiting groove; 22. Guide post; 23. Groove. Detailed Implementation

[0027] See Figures 1 to 10A clamping device for machining or inspecting a motorcycle cylinder head includes a fixed base 1 for fixed connection with a tooling plate. The fixed base 1 has a hollow inner cavity with two opposing arc-shaped internal threaded grooves 2 in the center. A clearance space for a pressure plate 3 is provided between the two arc-shaped internal threaded grooves 2. Guide grooves 5 for vertical drive guide blocks 4 are respectively provided on the left and right sides of the inner cavity. Both the vertical drive guide blocks 4 and the guide grooves 5 extend vertically. The guide grooves 5 communicate with the clearance space of the pressure plate 3. The left and right ends of the pressure plate 3 are fixedly connected to the upper ends of the vertical drive guide blocks 4. In this embodiment, the pressure plate 3 is fixedly connected to the vertical drive guide blocks 4 by bolts. A circumferential limiting groove is provided on the upper end surface of each vertical drive guide block 4. The pressure plate 3 is inserted into the circumferential limiting groove to form a circumferential limit on the pressure plate 3. A wedge-shaped portion 6 is provided at the lower end of the vertical drive guide block 4, with the wedge-shaped portion 6 respectively located on the front and rear sides of the lower end of the vertical drive guide block 4.

[0028] The vertical drive guide block 4 is slidably engaged with each guide groove 5. The fixed seat 1 is provided with four horizontal clamping mechanism mounting holes 7 on the front and rear walls of the guide groove 5. The horizontal clamping mechanism is slidably engaged in the mounting holes 7. Limiting plates 8 are installed on the front and rear walls of the fixed seat 1. The limiting plates 8 are threadedly connected to the fixed seat 1. One end of the horizontal clamping mechanism is provided with a push rod 9 extending out of the limiting plate 8. The other end of the horizontal clamping mechanism is provided with a horizontal drive block 10. A return spring 11 is installed in the mounting hole 7 to buffer the push rod 9. The mounting hole 7 is connected to the guide groove 5. A cover plate 12 is fixedly connected to the upper end of the fixed seat 1. The cover plate 12 is threadedly connected to the fixed seat 1. The large diameter section 13 of a stepped threaded column is threadedly engaged in the arc-shaped internal thread groove 2. The small diameter section 14 of the stepped threaded column extends upward out of the cover plate 12 and is fixedly connected to a rotating handle 15. The lower end of the large diameter section 13 is connected to the pressure plate 3. Furthermore, the small diameter section 14 of the stepped threaded column is symmetrically provided with tangent sections on both sides, and the lower end face of the rotating handle 15 is provided with a groove. The tangent section is inserted into the groove, so that the small diameter section 14 and the rotating handle 15 form a circumferential limit. The structure of the tangent section makes the rotation of the rotating handle 15 more stable. The small diameter section 14 and the rotating handle 15 are threadedly connected.

[0029] Furthermore, the horizontal clamping mechanism also includes a connecting column 16, which is disposed between the push rod 9 and the horizontal drive block 10. The two end faces of the connecting column 16 are respectively provided with a first blind hole 17 and a second blind hole 18. The push rod 9 is installed in the first blind hole 17 and passes through the limiting plate 8. The return spring 11 is disposed on the outer wall of the push rod 9 in the first blind hole 17. The two ends of the return spring 11 are in contact with the limiting plate 8 and the first blind hole 17, respectively. The opposing surfaces of the horizontal drive block 10 and the connecting column 16 are provided with a third blind hole 19. A force-applying spring 20 is installed in the second blind hole 18 and the third blind hole 19. The blind hole structure makes the force applied by the spring more stable when it works. The two-stage spring structure not only improves the flexibility of the device, but also realizes the two functions of clamping and resetting. Furthermore, the horizontal drive block 10 has a rounded rectangular cross-section, and even further, the connecting column 16 has a circular cross-section. The rounded rectangular and circular cross-sections can reduce the friction between the horizontal drive block 10, the connecting column 16 and the inner wall of the fixed seat 1, making the horizontal clamping mechanism slide more smoothly.

[0030] Furthermore, the contact surface between the horizontal drive block 10 and the vertical drive guide block 4 is provided with a wedge-shaped portion 6. The wedge-shaped portion 6 of the horizontal drive block 10 and the wedge-shaped portion 6 of the vertical drive guide block 4 are aligned in the same direction. The two wedge-shaped portions 6 cooperate to make the horizontal clamping mechanism slide more smoothly.

[0031] Furthermore, a limiting groove 21 is provided on the lower end face of the large diameter section 13 of the stepped threaded column, and a guide post 22 is provided in the middle of the pressure plate 3. The upper end of the guide post 22 extends out of the pressure plate 3 and inserts into the limiting groove 21. A gap is left between the lower end of the guide post 22 and the inner wall of the fixed seat 1 for the downward stroke. When the lower end of the guide post 22 contacts the inner wall of the fixed seat 1, it reaches the maximum stroke. Furthermore, the upper end face of the guide post 22 is arc-shaped. The arc shape can reduce the friction between the upper end face of the guide post 22 and the limiting groove 21 of the stepped threaded column, making the rotation of the stepped threaded column smoother.

[0032] Furthermore, the front and rear outer walls of the fixed base 1 are provided with inwardly recessed grooves 23, and the arc-shaped internal thread grooves 2 are respectively provided in the inner walls of the two grooves 23. The two arc-shaped internal thread grooves 2 are arc-shaped, which can not only mesh with the large diameter section 13 of the stepped thread column, but also ensure smooth rotation and prevent locking. The wall thickness at the two grooves 23 is relatively thin, which can reduce the weight of the device and make the device lighter.

[0033] The working process of the device of the present invention is as follows: Before processing or inspecting the motorcycle cylinder head, the lower end face of the fixed seat 1 of the device is fixedly connected to the tooling plate. The motorcycle cylinder head is provided on both sides or one side of the device. Rotating the rotating handle 15 causes the stepped threaded column to rotate and move downward in the hollow inner cavity of the fixed seat 1. The stepped threaded column pushes the pressure plate 3 and the two vertical drive guide blocks 4 to move downward. The wedge-shaped part 6 of each horizontal drive block 10 cooperates with the wedge-shaped part 6 of the vertical drive guide block 4 to play a guiding role, so as to make symmetrical Two horizontal drive blocks 10 slide along the mounting hole 7, while the force spring 20 expands and the return spring 11 compresses, causing the push rod 9 to push outward, thus clamping the outer motorcycle cylinder head and initiating machining or inspection of the motorcycle cylinder head. When the vertical drive guide block 4 moves downward to its maximum stroke, the two symmetrical horizontal drive blocks 10 are not yet at the maximum diameter of the vertical drive guide block 4. This design ensures that the wedge-shaped portion 6 of the horizontal drive block 10 and the wedge-shaped portion 6 of the vertical drive guide block 4 are always in a mating state, ensuring smooth clamping or retraction. After the machining or inspection of the motorcycle cylinder head is completed, the rotating handle 15 is rotated in the opposite direction, causing the vertical drive guide block 4 to rise, and the springs of the horizontal clamping mechanism to automatically reset, without interfering with the hoisting of the motorcycle cylinder head.

[0034] The clamping device for processing or inspecting motorcycle cylinder heads of the present invention is simple to operate, directly converting the rotational motion into horizontal movement without the need for additional drive devices. It can clamp two or more products simultaneously, resulting in high processing efficiency, high flexibility, and constant and controllable output force, ensuring the processing quality of the products and avoiding omissions or inadequate operations caused by manual operation. After the product processing is completed, the spring can automatically reset, without affecting the subsequent hoisting and circulation of the products.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications made to the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. A clamping device for machining or inspecting a motorcycle cylinder head, characterized in that: Includes a fixed base (1), which has a hollow inner cavity. The middle of the inner cavity has two opposing arc-shaped internal thread grooves (2), with space between the two arc-shaped internal thread grooves (2) for the clearance of the pressure plate (3). The left and right sides of the inner cavity are respectively provided with guide grooves (5) for vertical drive guide blocks (4), and the guide grooves (5) are connected to the clearance space of the pressure plate (3). The left and right ends of the pressure plate (3) are respectively fixedly connected to the upper end of the vertical drive guide block (4), and the lower end of the vertical drive guide block (4) is provided with a wedge-shaped part. (6) The vertical drive guide block (4) is slidably engaged with each guide groove (5). The fixed seat (1) is provided with assembly holes (7) for the horizontal clamping mechanism on the front and rear walls of the guide groove (5). There are 4 assembly holes (7). The horizontal clamping mechanism is slidably engaged in the assembly holes (7). The horizontal clamping mechanism also includes a connecting column (16). The connecting column (16) is provided between the top rod (9) and the horizontal drive block (10). The two ends of the connecting column (16) are provided with a first blind hole (17) and a second blind hole, respectively. (18), the push rod (9) is installed in the first blind hole (17) and passes through the limiting plate (8). A force spring (20) is installed in the second blind hole (18) and the third blind hole (19). The front and rear walls of the fixed seat (1) are equipped with limiting plates (8). One end of the horizontal tightening mechanism is provided with a push rod (9) extending out of the limiting plate (8). The other end of the horizontal tightening mechanism is provided with a horizontal drive block (10). A return spring (11) is installed in the assembly hole (7) to buffer the push rod (9). The return spring (11) is set on the top The outer wall of the rod (9) is located in the first blind hole (17). The horizontal drive block (10) and the facing surface of the connecting column (16) are provided with a third blind hole (19). The assembly hole (7) is connected to the guide groove (5). The upper end of the fixed seat (1) is fixedly connected to a cover plate (12). The large diameter section (13) of a stepped threaded column is threaded in the arc internal thread groove (2). The small diameter section (14) of the stepped threaded column extends upward out of the cover plate (12) and is fixedly connected to a rotating handle (15). The lower end of the large diameter section (13) is connected to the pressure plate (3).

2. The clamping device for machining or inspecting motorcycle cylinder heads according to claim 1, characterized in that: The cross-section of the connecting column (16) is circular.

3. The clamping device for machining or inspecting motorcycle cylinder heads according to claim 1, characterized in that: The cross-section of the horizontal drive block (10) is a rounded rectangle.

4. The clamping device for machining or inspecting motorcycle cylinder heads according to claim 1, characterized in that: The contact surface between the horizontal drive block (10) and the vertical drive guide block (4) is provided with a wedge-shaped part (6).

5. The clamping device for machining or inspecting motorcycle cylinder heads according to claim 1, characterized in that: The stepped threaded column has symmetrically arranged tangent sections on both sides of the small diameter section (14). The lower end face of the rotating handle (15) is provided with a groove. The tangent section is inserted into the groove so that the small diameter section (14) and the rotating handle (15) form a circumferential limit. The small diameter section (14) and the rotating handle (15) are threadedly connected.

6. The clamping device for machining or inspecting motorcycle cylinder heads according to claim 1, characterized in that: The lower end face of the large diameter section (13) of the stepped threaded column is provided with a limiting groove (21), and a guide column (22) is provided in the middle of the pressure plate (3). The upper end of the guide column (22) passes through the pressure plate (3) and is inserted into the limiting groove (21). The lower end of the guide column (22) and the inner wall of the fixed seat (1) have a gap for the downward stroke.

7. The clamping device for machining or inspecting a motorcycle cylinder head according to claim 6, characterized in that: The upper end face of the guide post (22) is arc-shaped.

8. The clamping device for machining or inspecting a motorcycle cylinder head according to claim 1, characterized in that: The fixing seat (1) has an inwardly recessed groove (23) in the middle of the front and rear outer walls, and the arc-shaped internal thread groove (2) is respectively set in the inner wall of the two grooves (23).

Images