Damping device for machining of numerical control milling machine

Abstract

The damping device comprises a base and a cylinder body, a mounting seat is mounted at the position, close to the bottom, of the outer portion of the cylinder body, the mounting seat is mounted at the center of the upper portion of the base through a bolt, and the top of the cylinder body is sleeved with a rubber head; a rubber head is fixedly connected to the upper portion of the cylinder body, a mounting screw tube is mounted in the center of the upper portion of the cylinder body and penetrates through the rubber head, a protruding tube is fixedly connected to the outside of the cylinder body, a fixing seat is mounted at the bottom of the inside of the cylinder body, a fixing rod is mounted on the upper portion of the fixing seat, and an oil barrel sleeves the top end of the outside of the fixing rod. And a first spring is arranged between the oil cylinder and the fixing base and located outside the fixing rod in a sleeving mode, and a piston is installed at the top end of the fixing rod and located inside the oil cylinder. The damping device for machining of the numerical control milling machine has the effects of high damping, high buffering and high stability, has adjustability, and is conveniently suitable for numerical control milling machines with different weights.

Description

Technical Field

[0001] The invention relates to the field of vibration reduction devices, and in particular to a vibration reduction device used for numerical control milling machine processing. Background Art

[0002] A CNC milling machine is a processing equipment used for milling workpieces in industrial processing. It will generate vibration during operation, so a shock absorber is needed to reduce the vibration. Usually, a shock absorber is installed at the bottom of the CNC milling machine, which can effectively reduce the vibration between the CNC milling machine and the ground when it is working.

[0003] However, the existing shock absorbing device of the CNC milling machine is usually composed of a vertically arranged spring and a damper, which has a poor shock absorbing effect. In addition, since they are all arranged in the vertical direction, the stability of the shock absorber is poor. Secondly, since the position and weight of the four corners of the CNC milling machine are different, the traditional shock absorbing device will cause the CNC milling machine to tilt due to the different weights of the four feet after installation, thereby affecting the processing accuracy of the CNC milling machine. Summary of the invention

[0004] The main purpose of the present invention is to provide a shock absorbing device for CNC milling machine processing, which can effectively solve the technical problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A shock absorbing device for numerical control milling machine processing comprises a base and a cylinder body, wherein a mounting seat is installed near the bottom position of the outside of the cylinder body, and the mounting seat is installed at the upper center position of the base through a connecting bolt, a rubber head is sleeved on the top of the cylinder body, and a mounting spiral tube is installed through the rubber head at the upper center position of the cylinder body, a protruding tube is fixedly connected to the outside of the cylinder body, a fixing seat is installed at the bottom position of the inside of the cylinder body, a fixing rod is installed on the upper part of the fixing seat, an oil cylinder is sleeved on the top position of the outside of the fixing rod, a first spring is sleeved on the outside of the fixing rod between the oil cylinder and the fixing seat, a piston is installed at the top of the fixing rod located inside the oil cylinder, a damping hole is opened on the upper surface of the piston, a reverse thrust structure is provided inside the oil cylinder, and the reverse thrust structure comprises a reverse thrust spring and a top plate, the reverse thrust spring is placed inside the oil cylinder and located on the upper part of the piston, the top plate is fixedly connected to the top of the reverse thrust spring, and the reverse thrust column is fixedly installed at the upper center position of the top plate.

[0007] As a further solution of the present invention, the reverse thrust column passes through the top of the oil cylinder, and a sealing gasket is provided between the contact surface of the reverse thrust column and the oil cylinder. The reverse thrust column is connected to the mounting spiral tube, and the interior of the cylinder body and the oil cylinder are filled with oil.

[0008] As a further solution of the present invention, a buffer structure is provided between the cylinder body and the protruding tube, and the buffer structure includes a shaft seat and a push plate. The shaft seat is installed on the outside of the oil cylinder, and the shaft seat is movably connected to a connecting rod through a connecting shaft. One end of the connecting rod is connected to a ball head. The push plate is placed inside the protruding tube, and a ball seat is installed on one side of the push plate, and the ball seat is rotatably connected to the ball head.

[0009] As a further solution of the present invention, a through hole is opened on one side surface of the push plate, and a second spring is arranged between the other side of the push plate and the protruding tube.

[0010] As a further solution of the present invention, an adjustment structure is provided at one end of the protruding tube, and the adjustment structure includes a screw rod, which passes through the center position of the protruding tube and is connected to a pressure plate, an inner hexagonal hole is opened on the surface of one end of the screw rod, and the external thread of the screw rod is connected to an external hexagonal cap.

[0011] As a further solution of the present invention, a threaded sleeve is fixedly installed on the inner side of the protruding tube and located on the outer side of the screw rod, and the screw rod is threadedly connected with the contact surface of the protruding tube and the threaded sleeve.

[0012] As a further solution of the present invention, the protruding tube and the buffer structure form a stabilizing assembly, and four groups of stabilizing assemblies are arranged in a cross shape on the inner side of the cylinder body.

[0013] As a further solution of the present invention, fixing holes are provided at the four feet of the upper surface of the base, and six through grooves are provided in a circular array near the center of the lower surface of the base.

[0014] As a further solution of the present invention, a rubber pad is installed at the bottom of the base, and the rubber head is configured in a conical shape.

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

[0016] By setting a buffer structure in conjunction with an oil cylinder, when the CNC milling machine vibrates during operation, the oil cylinder itself, in conjunction with the fixed rod and the piston, can buffer and reduce the shock of the CNC milling machine, and can also drive the shaft seat to move in the vertical direction, thereby pushing the push plate to move in the horizontal direction through the connecting rod. On the one hand, the shock absorption, buffering and damping effects of the entire shock absorption device for CNC milling machine processing are increased; on the other hand, four groups of buffer structures are arranged in a cross direction, making the entire shock absorption device more stable than traditional vertically arranged springs and dampers;

[0017] By setting an adjustment structure to cooperate with the buffer structure, a screw is threadedly connected to the end of the protruding tube. During use, the screw can be rotated to push the pressure plate to move, so that the position of the pressure plate changes, thereby changing the deformable space of the second spring, so that the elastic force of the second spring is changed, that is, the hardness of the entire construction device for CNC milling machines is changed, and it is suitable for CNC milling machines of different weights;

[0018] Secondly, since the CNC milling machine needs to be installed through four shock absorbing devices and four legs, during the installation process, the hardness of the shock absorbing device installed on each leg can be adjusted according to the different weights on the four legs of the CNC milling machine, so that the four legs of the CNC milling machine can get the same shock absorbing effect, and at the same time, it also avoids the tilting phenomenon caused by the different pressures on the four legs of the CNC milling machine, ensuring the processing accuracy of the CNC milling machine and improving the stability of the CNC milling machine;

[0019] By setting up a reverse thrust structure to cooperate with the oil cylinder and the piston, during the working process, the oil cylinder is pressed by force, which can cooperate with the piston to compress the reverse thrust spring to deform, so that the reverse thrust spring always maintains the elastic force on the top plate, and the reverse thrust column always maintains the reverse thrust on the bolt installed in the mounting screw tube, thereby effectively increasing the stability between the bolt and the mounting screw tube, reducing the phenomenon of bolt loosening, and thus improving the stability of the connection between the CNC milling machine and the entire shock absorbing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a shock absorbing device for CNC milling machine processing according to the present invention;

[0021] Figure 2 This is a bottom perspective view of a shock absorbing device for CNC milling machine processing according to the present invention;

[0022] Figure 3 A cross-sectional view of a vibration reduction device for CNC milling machine processing according to the present invention;

[0023] Figure 4 The invention provides a vibration reduction device for CNC milling machine processing Figure 3 Main view;

[0024] Figure 5 This is an enlarged view of an oil cylinder of a shock absorbing device used for CNC milling machine processing according to the present invention;

[0025] Figure 6 A protruding tube of a shock absorbing device for CNC milling machine processing according to the present invention;

[0026] Figure 7 This is a disassembled view of a ball head and a ball seat of a shock absorbing device for CNC milling machine processing according to the present invention.

[0027] In the figure: 1. base; 2. rubber pad; 3. fixing hole; 4. cylinder body; 5. mounting seat; 6. connecting bolt; 7. rubber head; 8. mounting screw tube; 9. protruding tube; 10. buffer structure; 11. fixing seat; 12. fixing rod; 13. first spring; 14. oil cylinder; 15. shaft seat; 16. connecting shaft; 17. connecting rod; 18. ball head; 19. ball seat; 20. push plate; 21. second spring; 22. piston; 23. damping hole; 24. reverse thrust structure; 25. reverse thrust spring; 26. top plate; 27. reverse thrust column; 28. through hole; 29. ​​adjustment structure; 30. screw rod; 31. inner hexagonal hole; 32. outer hexagonal cap; 33. pressure plate. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] like Figure 1-7 As shown, a shock absorbing device for CNC milling machine processing includes a base 1 and a cylinder body 4, a mounting seat 5 is installed near the bottom of the cylinder body 4, and the mounting seat 5 is installed at the upper center of the base 1 through a connecting bolt 6, a rubber head 7 is sleeved on the top of the cylinder body 4, and a mounting screw 8 is installed through the rubber head 7 at the upper center of the cylinder body 4, a protruding tube 9 is fixedly connected to the outside of the cylinder body 4, a fixing seat 11 is installed at the bottom of the cylinder body 4, a fixing rod 12 is installed on the upper part of the fixing seat 11, and an oil sleeve is sleeved on the top of the fixing rod 12 The first spring 13 is sleeved on the outside of the fixed rod 12 between the oil cylinder 14 and the fixed seat 11, the top end of the fixed rod 12 is located inside the oil cylinder 14, and a piston 22 is installed, and a damping hole 23 is opened on the upper surface of the piston 22. A reverse thrust structure 24 is provided inside the oil cylinder 14, and the reverse thrust structure 24 includes a reverse thrust spring 25 and a top plate 26. The reverse thrust spring 25 is placed inside the oil cylinder 14 and located on the upper part of the piston 22. The top plate 26 is fixedly connected to the top end of the reverse thrust spring 25, and the reverse thrust column 27 is fixedly installed at the upper center position of the top plate 26.

[0030] In this embodiment, the reverse thrust column 27 passes through the top end of the oil cylinder 14, and a sealing gasket is provided between the contact surface between the reverse thrust column 27 and the oil cylinder 14. The reverse thrust column 27 is connected to the mounting screw tube 8, and the interior of the cylinder body 4 and the oil cylinder 14 are filled with oil.

[0031] During use, the reverse thrust column 27 can be always pressed against the bolt installed on the inner side of the mounting screw tube 8 by the elastic force of the reverse thrust spring 25, so that there is always a reverse force between the bolt and the mounting screw tube 8, thereby reducing the loosening phenomenon between the bolt and the mounting screw tube 8, improving the stability of the bolt connection, and thus improving the stability of the connection between the CNC milling machine and the entire shock absorbing structure.

[0032] In this embodiment, a buffer structure 10 is provided between the cylinder body 4 and the protruding tube 9, and the buffer structure 10 includes a shaft seat 15 and a push plate 20. The shaft seat 15 is installed on the outside of the oil cylinder 14, and the shaft seat 15 is movably connected to a connecting rod 17 through a connecting shaft 16. One end of the connecting rod 17 is connected to a ball head 18. The push plate 20 is placed inside the protruding tube 9, and a ball seat 19 is installed on one side of the push plate 20, and the ball seat 19 is rotatably connected to the ball head 18.

[0033] When the oil cylinder 14 is pressed downward, the shaft seat 15 is driven to move downward, and the shaft seat 15 pushes the connecting rod 17 to move downward and rotate. The connecting rod 17 pushes the push plate 20 to move through the ball head 18 and the ball seat 19. The push plate 20 is subjected to the elastic force of the second spring 21 to produce a shock absorbing effect.

[0034] In this embodiment, a through hole 28 is formed on one side of the push plate 20 , and a second spring 21 is provided between the other side of the push plate 20 and the protruding tube 9 .

[0035] When the push plate 20 is moving, the oil in the protruding tube 9 will flow through the through hole 28, thereby forming a damping effect on the push plate 20, effectively increasing the buffering and shock absorbing effect of the CNC milling machine.

[0036] In this embodiment, an adjustment structure 29 is provided at one end of the protruding tube 9, and the adjustment structure 29 includes a screw rod 30. The screw rod 30 passes through the center position of the protruding tube 9 and is connected to a pressure plate 33. An inner hexagonal hole 31 is opened on the surface of one end of the screw rod 30, and the external thread of the screw rod 30 is connected to an outer hexagonal cap 32.

[0037] Rotate the outer hexagonal cap 32 so that the outer hexagonal cap 32 protrudes out of the tube 9, and then use an external wrench to insert the screw 30 into the inner hexagonal hole 31. The screw 30 pushes the pressure plate 33 to move, so that the second spring 21 is squeezed and shortened. Since the length of the second spring 21 is squeezed and shortened, its elastic force increases, so that the pressure required by the push plate 20 to push the second spring 21 to deform can be adjusted, thereby adjusting the hardness of the entire shock absorbing device.

[0038] In this embodiment, a threaded sleeve is fixedly installed on the inner side of the protruding tube 9 and located on the outer side of the screw rod 30, and the screw rod 30 is threadedly connected with the contact surface of the protruding tube 9 and the threaded sleeve.

[0039] The threaded surface between the screw sleeve and the protruding tube 9 can cooperate with the movement of the screw rod 30 on the one hand, and can also increase the sealing performance of the contact surface between the screw rod 30 and the protruding tube 9 on the other hand.

[0040] In this embodiment, the protruding tube 9 and the buffer structure 10 form a stabilizing assembly, and four groups of stabilizing assemblies are arranged in a cross shape on the inner side of the cylinder body 4 .

[0041] The four stabilizing components are arranged in a cross shape and cooperate with the connecting rod 17 to convert the vertical force into the horizontal force. Compared with the traditional shock absorbing device that directly sets the vertical damper, it has higher stability.

[0042] In this embodiment, fixing holes 3 are provided at the four foot positions of the upper surface of the base 1 , and six through grooves are arranged in a circular array near the center position of the lower surface of the base 1 .

[0043] The fixing holes 3 can conveniently fix the base 1 on the ground or other surfaces.

[0044] In this embodiment, a rubber pad 2 is installed at the bottom of the base 1, and the rubber head 7 is arranged in a conical shape.

[0045] The rubber pad 2 can enhance the shock absorption effect and the anti-slip effect.

[0046] It should be noted that the present invention is a shock absorbing device for CNC milling machine processing. When in use, the CNC milling machine is lifted by an external tool such as a forklift or a jack so that the four legs of the CNC milling machine leave the ground, and then four shock absorbing devices are prepared and respectively arranged at the bottom of the four legs of the CNC milling machine. After the arrangement is completed, the CNC milling machine is placed on the upper part of the four shock absorbing devices through the four legs, and external bolts are used to penetrate the mounting holes of the legs of the CNC milling machine and connect with the mounting screw 8 to connect the CNC milling machine with the shock absorbing device. In order to increase stability, external bolts can be used to penetrate the fixing holes 3 to fix the base 1 on the ground or other platforms;

[0047] During operation, the CNC milling machine vibrates, and the oil cylinder 14 is pushed to move in the vertical direction by installing the screw tube 8, so that the oil cylinder 14 moves in the vertical direction outside the fixed rod 12. During the movement, the reverse thrust spring 25 and the first spring 13 are deformed by force, thereby generating a shock-absorbing effect. At the same time, due to the movement of the oil cylinder 14, the oil inside it flows through the damping hole 23 of the piston 22, thereby forming a damping effect, effectively reducing the shock of the CNC milling machine;

[0048] During the deformation of the reverse thrust spring 25, the reverse thrust spring 25 always maintains an upward thrust on the top plate 26, so that the reverse thrust column 27 always presses the bottom end of the bolt installed in the mounting screw tube 8, so that the bolt always maintains a reverse force with the mounting screw tube 8, effectively increasing the stability of the connection between the bolt and the mounting screw tube 8;

[0049] At the same time, during the movement of the oil cylinder 14, the shaft seat 15 is driven to move, so that the connecting rod 17 moves vertically and rotates through the shaft seat 15. The other end of the connecting rod 17 rotates in the ball seat 19 through the ball head 18 and pushes the ball seat 19, so that the push plate 20 is forced to move. The through hole 28 on the surface of the push plate 20 and the oil inside it produce a damping effect, and the second spring 21 is deformed to form a shock-absorbing effect, which effectively increases the shock-absorbing effect of the CNC milling machine.

[0050] The outer hexagonal cap 32 is rotated so that the outer hexagonal cap 32 moves through the thread of the screw rod 30 to move it to one end away from the protruding tube 9, and then an external wrench is inserted into the inner hexagonal hole 31 to rotate the screw rod 30, so that the screw rod 30 pushes or pulls the pressure plate 33 to move, thereby changing the expandable length of the second spring 21, that is, changing the elastic force of the second spring 21, thereby adjusting the hardness of the entire shock absorbing device.

[0051] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A shock absorbing device for CNC milling machine processing, characterized in that: The invention comprises a base (1) and a cylinder body (4), wherein a mounting seat (5) is installed near the bottom of the outside of the cylinder body (4), and the mounting seat (5) is installed at the upper center of the base (1) through a connecting bolt (6), a rubber head (7) is sleeved on the top of the cylinder body (4), and a mounting screw tube (8) is installed at the upper center of the cylinder body (4) through the rubber head (7), a protruding tube (9) is fixedly connected to the outside of the cylinder body (4), a fixing seat (11) is installed at the bottom of the inside of the cylinder body (4), a fixing rod (12) is installed on the top of the fixing seat (11), an oil cylinder (14) is sleeved on the top of the outside of the fixing rod (12), and the oil cylinder (14) A first spring (13) is sleeved on the outside of the fixing rod (12) between the fixing seat (11); a piston (22) is installed at the top end of the fixing rod (12) located inside the oil cylinder (14); a damping hole (23) is opened on the upper surface of the piston (22); a reverse thrust structure (24) is provided inside the oil cylinder (14); the reverse thrust structure (24) includes a reverse thrust spring (25) and a top plate (26); the reverse thrust spring (25) is placed inside the oil cylinder (14) above the piston (22); the top plate (26) is fixedly connected to the top end of the reverse thrust spring (25); and the reverse thrust column (27) is fixedly installed at the upper center position of the top plate (26).

2. A shock absorbing device for CNC milling machine processing according to claim 1, characterized in that: The reverse thrust column (27) passes through the top end of the oil cylinder (14), and a sealing gasket is provided between the contact surfaces of the reverse thrust column (27) and the oil cylinder (14). The reverse thrust column (27) is connected to the mounting screw tube (8), and the interiors of the cylinder body (4) and the oil cylinder (14) are both filled with oil.

3. The shock absorbing device for CNC milling machine processing according to claim 1 is characterized in that: A buffer structure (10) is provided between the cylinder body (4) and the protruding tube (9), and the buffer structure (10) comprises a shaft seat (15) and a push plate (20). The shaft seat (15) is installed outside the oil cylinder (14), and the shaft seat (15) is movably connected to a connecting rod (17) via a connecting shaft (16). One end of the connecting rod (17) is connected to a ball head (18). The push plate (20) is placed inside the protruding tube (9), and a ball seat (19) is installed on one side of the push plate (20), and the ball seat (19) is rotatably connected to the ball head (18).

4. A shock absorbing device for CNC milling machine processing according to claim 3, characterized in that: A through hole (28) is provided on one side surface of the push plate (20), and a second spring (21) is provided between the other side of the push plate (20) and the protruding tube (9).

5. The shock absorbing device for CNC milling machine processing according to claim 3 is characterized in that: An adjustment structure (29) is provided at one end of the protruding tube (9), and the adjustment structure (29) includes a screw rod (30). The screw rod (30) passes through the center of the protruding tube (9) and is connected to a pressure plate (33). An inner hexagonal hole (31) is provided on the surface of one end of the screw rod (30), and an outer hexagonal cap (32) is connected to the outer thread of the screw rod (30).

6. A shock absorbing device for CNC milling machine processing according to claim 5, characterized in that: A threaded sleeve is fixedly mounted on the inner side of the protruding tube (9) and located on the outer side of the screw rod (30), and the screw rod (30) is threadedly connected with the protruding tube (9) and the contact surface of the threaded sleeve.

7. The shock absorbing device for CNC milling machine processing according to claim 3 is characterized in that: The protruding tube (9) and the buffer structure (10) form a stabilizing assembly, and four groups of stabilizing assemblies are arranged in a cross shape on the inner side of the cylinder body (4).

8. The shock absorbing device for CNC milling machine processing according to claim 1, characterized in that: The upper surface of the base (1) is provided with fixing holes (3) at the four foot positions, and the lower surface of the base (1) is provided with six through grooves in a circular array near the center position.

9. The shock absorbing device for CNC milling machine processing according to claim 1, characterized in that: A rubber pad (2) is installed at the bottom of the base (1), and the rubber head (7) is arranged in a conical shape.

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