Numerical control lathe tool anti-vibration device

Abstract

The utility model relates to a numerical control lathe tool anti -vibration device belongs to numerical control turning processing technical field, this device is used to solve the problem of the machining precision decline and tool life shortening caused by lathe tool vibration, its technical scheme includes the tool holder, the tool plate and the outer sleeve, the tool holder is equipped with the first installation groove to install the tool plate, and the tool plate is equipped with the second installation groove fixed blade, and both form the ladder structure to decompose the main cutting force into axial and radial component force, the outer sleeve inner wall sets up the first buffer pad and absorbs the vibration all around, and the front end configures the elastic plate and second buffer pad and carries out additional buffering, the adjusting mechanism changes the second buffer pad position through the thread ring, connecting rod and sliding pressure ring, to adapt to different amplitude, this device can reduce the stress intensity, prolongs the tool life, and improves the processing quality.

Description

Technical Field

[0001] This utility model relates to the field of CNC turning technology, and in particular to a CNC turning tool anti-vibration device. Background Technology

[0002] In CNC turning, the cutting tool is a key tool, and its working condition directly affects the machining accuracy and tool life.

[0003] In actual machining, cutting tools are prone to vibration due to cutting forces, machine tool vibration, and other factors. This vibration not only leads to a decrease in the quality of the machined surface, resulting in chatter marks and increased roughness, but also accelerates tool wear, shortens tool life, and increases production costs.

[0004] Meanwhile, some existing tool mounting structures have a large unidirectional force when subjected to cutting forces, which can easily lead to damage to the tool or mounting components. Moreover, the buffering measures for tool vibration are not perfect and cannot be effectively adjusted according to the actual amplitude, making it difficult to ensure good anti-vibration effect under various working conditions.

[0005] Therefore, developing a vibration damping device for CNC lathe tools that can effectively prevent vibration, reduce the stress on the cutting tool, and has an adjustable buffering effect is of great practical significance. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies where the working state of a lathe tool, as a critical tool, directly affects machining accuracy and tool life. In actual machining, lathe tools are prone to vibration due to cutting forces and machine tool vibrations. This vibration not only leads to a decrease in surface quality, resulting in chatter marks and increased roughness, but also accelerates tool wear, shortens tool life, and increases production costs. Furthermore, some existing lathe tool mounting structures experience high unidirectional force when subjected to cutting forces, easily causing damage to the tool or mounting components. Moreover, their vibration damping measures are insufficient, unable to effectively adjust according to the actual amplitude, and cannot guarantee good anti-vibration performance under various working conditions. Therefore, this invention proposes a CNC lathe tool anti-vibration device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A vibration damping device for CNC turning tools includes a tool holder, a first mounting groove at one end of the tool holder, a tool plate detachably connected inside the first mounting groove, a second mounting groove at one end of the tool plate, and a cutting tool fixedly installed inside the second mounting groove. The tool plate and the first mounting groove cooperate to form a stepped structure to decompose the main cutting force into axial and radial components.

[0009] The outer sleeve is fixedly installed on the frame and located outside the tool holder. A rectangular through hole is opened inside the outer sleeve, and a first buffer pad is fixedly provided on the inner walls of the rectangular through hole.

[0010] A buffer assembly, located at one end of the outer sleeve, is used to buffer the vibration of the tool holder;

[0011] Adjustment mechanism, used to adjust the buffering effect of the buffer assembly;

[0012] When the tool holder vibrates, the first buffer pad absorbs vibration energy from all sides, and the stepped structure reduces the force intensity in one direction.

[0013] In one possible design, a limiting component is also included, which is disposed on the top of the tool holder and is used to press the tool plate to reduce wobbling. The limiting component includes a pressure plate, which is threadedly connected to the tool holder by a first fixing screw, and one end of the pressure plate is pressed against the top of the tool plate.

[0014] In one possible design, the blade plate is provided with a threaded hole, and a second fixing screw is threadedly connected to the blade plate and also threadedly connected to the blade holder for fixing the blade plate.

[0015] In one possible design, the buffer assembly includes multiple elastic plates, a mounting plate, and a second buffer pad. The multiple elastic plates are integrally formed on one end of the outer sleeve, the mounting plate is detachably connected to the elastic plates, and the second buffer pad is fixed to one side of the mounting plate. The second buffer pad provides cushioning when the front end of the tool holder vibrates.

[0016] In one possible design, the elastic plate has two symmetrical relief grooves on one side, and the inner wall of one side of the relief groove has a threaded hole. A fourth fixing screw is threaded into the hole and threaded into the mounting plate to fix the mounting plate to the elastic plate.

[0017] In one possible design, the adjusting mechanism includes a threaded ring, multiple connecting rods, and a sliding pressure ring. The threaded ring is threaded onto the outer wall of the outer sleeve, the multiple connecting rods are fixedly installed on one side of the threaded ring, and the sliding pressure ring is fixedly connected to one end of the connecting rods. The sliding pressure ring has a conical hole inside.

[0018] In one possible design, an mounting ring plate is fixedly installed at the end of the outer sleeve away from the adjustment mechanism. The mounting ring plate has multiple threaded holes, and a third fixing screw is threaded into the hole and fixed to the frame for installing the outer sleeve.

[0019] In this application, during use, the blade is installed inside the second mounting slot and the blade plate is installed inside the first mounting slot. The blade plate and the first mounting slot are fixedly connected by a second fixing screw. The pressure plate is pressed on the top of the blade plate and the pressure plate and the blade holder are fixedly connected by the first fixing screw. The stepped structure decomposes the main cutting force into axial and radial components, reducing the force intensity in one direction. The pressure plate presses down on the blade plate, reducing the shaking of the blade plate.

[0020] If the tool holder and tool plate vibrate during use, the outer sleeve can be mounted on the frame via the mounting ring plate, positioned outside the tool holder. When the tool holder vibrates, the first buffer pads around its perimeter can provide cushioning. Since the front of the tool holder vibrates more than the rear, the second buffer pad at the front can provide further cushioning. Depending on the actual amplitude, the threaded ring can be rotated. After the threaded ring moves laterally, it will drive the sliding pressure ring to move laterally via the connecting rod. The conical hole design allows the sliding pressure ring to compress and deform multiple elastic plates as it approaches the outer sleeve. The ends of the multiple elastic plates away from the outer sleeve will gradually move closer to the tool holder, thereby changing the distance between the second buffer pad and the tool holder, ensuring a cushioning effect during vibration.

[0021] Beneficial effects: By adopting a stepped structure in the connection structure of the tool holder and the tool plate, the main cutting force is decomposed into axial and radial components, which effectively reduces the stress intensity in one direction, reduces the risk of damage to the tool and its mounting components due to excessive stress, and extends the service life of the tool and the device.

[0022] The pressure plate is used to press the blade onto the tool holder, and the pressure plate and the tool holder are fixedly connected by the first fixing screw. This design can reduce the shaking of the blade during operation, improve the installation stability of the tool, and thus ensure machining accuracy.

[0023] A first buffer pad is fixedly embedded in the inner wall of the rectangular through hole inside the outer sleeve. When the tool holder vibrates, the first buffer pad can buffer the tool holder from multiple directions, effectively absorb and disperse vibration energy, and reduce the impact of vibration on machining.

[0024] Considering that the vibration at the front end of the tool holder is greater than that at the rear end, a second buffer pad is set at one end of the outer sleeve to further buffer the front end of the tool holder, thereby enhancing the anti-vibration effect and improving the machining quality.

[0025] By rotating the threaded ring, its lateral movement causes the sliding pressure ring to move laterally as well. The distance between the second buffer pad and the tool holder can be adjusted using the conical hole and multiple elastic plates. This allows for flexible adjustment of the buffering effect based on the actual amplitude, ensuring effective buffering of the tool holder under various operating conditions and improving the adaptability and reliability of the device.

[0026] The blade plate is detachably connected to the blade holder via a second fixing screw, the pressure plate is fixedly connected to the blade holder via a first fixing screw, the elastic plate is detachably connected to the mounting plate via a fourth fixing screw, and the outer sleeve is fixedly mounted on the frame via a mounting ring plate and a third fixing screw. These designs make the installation, disassembly, and maintenance of the device more convenient, facilitate tool replacement and device maintenance, and reduce operating costs. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural schematic diagram of a vibration damping device for CNC lathe tools proposed in this utility model;

[0028] Figure 2 This is a three-dimensional structural diagram of the tool holder and the cutting tool in a CNC lathe tool anti-vibration device proposed in this utility model;

[0029] Figure 3 This is an exploded view of the tool holder and the cutting tool in a CNC lathe tool anti-vibration device proposed in this utility model;

[0030] Figure 4 This is a three-dimensional structural diagram of the outer sleeve and sliding pressure ring in a CNC lathe tool anti-vibration device proposed in this utility model;

[0031] Figure 5 This is an exploded view of the outer sleeve and sliding pressure ring in a CNC lathe tool anti-vibration device proposed in this utility model.

[0032] In the diagram: 1. Tool holder; 2. Tool plate; 3. Sliding pressure ring; 4. Outer sleeve; 5. Blade; 6. First fixing screw; 7. Pressure plate; 8. Second fixing screw; 9. Connecting rod; 10. Threaded ring; 11. First buffer pad; 12. Third fixing screw; 13. Mounting ring plate; 14. Fourth fixing screw; 15. Mounting plate; 16. Second buffer pad; 17. Conical hole; 18. First mounting groove; 19. Clearance groove; 20. Elastic plate; 21. Second mounting groove. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0034] In one embodiment: Referring to 1-5, a shock-absorbing device:

[0035] The CNC lathe tool anti-vibration device is mainly composed of a tool holder 1, a tool plate 2, a cutting tool 5, a pressure plate 7, a first fixing screw 6, a second fixing screw 8, an outer sleeve 4, a sliding pressure ring 3, a connecting rod 9, a threaded ring 10, a first buffer pad 11, a mounting ring plate 13, a third fixing screw 12, a fourth fixing screw 14, a mounting plate 15, a second buffer pad 16, and an elastic plate 20.

[0036] The tool holder 1 has a first mounting groove 18 at one end, which is used for the detachable mounting of the tool plate 2. The tool plate 2 has a second mounting groove 21 at one end, where the blade 5 is fixedly embedded, completing the installation of the blade 5. To limit the position of the tool plate 2, a limiting component is provided on the top of the tool holder 1. This limiting component includes a pressure plate 7, with a first fixing screw 6 threaded through its interior. The first fixing screw 6 is threadedly connected to the tool holder 1, pressing one end of the pressure plate 7 against the top of the tool plate 2, thereby limiting the position of the tool plate 2 and reducing its shaking during operation. Simultaneously, a second fixing screw 8 is threaded through its interior, connecting the second fixing screw 8 to the tool holder 1, further securing the tool plate 2 and ensuring the stability of the connection between the tool plate 2 and the tool holder 1.

[0037] The outer sleeve 4 is fixedly mounted on the frame and located outside the tool holder 1. A mounting ring plate 13 is fixedly mounted on the end of the outer sleeve 4 away from the threaded ring 10. Multiple third fixing screws 12 are threaded through the mounting ring plate 13, securing the outer sleeve 4 firmly to the frame. A rectangular through-hole is formed inside the outer sleeve 4, and first buffer pads 11 are fixedly embedded in the inner walls of the rectangular through-hole. When the tool holder 1 vibrates, the first buffer pads 11 around the perimeter can buffer the tool holder 1 from multiple directions, effectively absorbing and dispersing vibration energy.

[0038] One end of the outer sleeve 4 is equipped with a buffer assembly for damping the vibration of the tool holder 1. This buffer assembly includes multiple elastic plates 20 integrally formed at one end of the outer sleeve 4. Two symmetrically arranged clearance grooves 19 are formed on one side of each elastic plate 20, and a fourth fixing screw 14 is threaded through the inner wall of one side of each clearance groove 19. A mounting plate 15 is detachably connected to the elastic plates 20 via the fourth fixing screw 14, and a second buffer pad 16 is fixedly mounted on one side of the mounting plate 15. Since the vibration at the front end of the tool holder 1 is greater than that at the rear, the second buffer pad 16 at the front end can further dampen the vibration at the front end of the tool holder 1, enhancing the anti-vibration effect.

[0039] This application can be used in the field of CNC lathe tools, or in other fields applicable to this application.

[0040] In another embodiment: Reference Figure 1-5A vibration damping device for CNC lathe tools is disclosed. The device comprises a threaded ring 10 threaded onto the outer wall of an outer sleeve 4. Multiple connecting rods 9 are fixedly mounted on one side of the threaded ring 10, and one end of each connecting rod 9 is fixedly connected to a common sliding pressure ring 3. The sliding pressure ring 3 has a conical hole 17 inside, which cooperates with multiple elastic plates 20. In actual use, if the tool holder 1 and tool plate 2 vibrate, the threaded ring 10 can be rotated according to the actual amplitude. After the threaded ring 10 moves laterally, it drives the sliding pressure ring 3 to move laterally via the connecting rods 9. When the sliding pressure ring 3 approaches the outer sleeve 4, the conical hole 17 causes the multiple elastic plates 20 to deform under pressure. The ends of the multiple elastic plates 20 away from the outer sleeve 4 gradually move closer to the tool holder 1, thereby changing the distance between the second buffer pad 16 and the tool holder 1, ensuring that the second buffer pad 16 always provides good damping during vibration.

[0041] The CNC turning tool anti-vibration device, through the above-mentioned structure and installation method, can effectively reduce the stress on the tool, decompose the main cutting force into axial and radial components, and reduce the risk of damage to the tool or mounting components due to excessive force. At the same time, through the first buffer pad 11 and the adjustable second buffer pad 16, the vibration of the tool holder 1 can be effectively buffered according to the actual amplitude, improving the surface quality of the machined part, extending the tool life, and reducing production costs.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vibration damping device for CNC lathe tools, characterized in that, include: The tool holder (1) has a first mounting groove (18) at one end, and a tool plate (2) is detachably connected inside the first mounting groove (18). A second mounting groove (21) is provided at one end of the tool plate (2), and a blade (5) is fixedly installed inside the second mounting groove (21). The tool plate (2) and the first mounting groove (18) cooperate to form a stepped structure to decompose the main cutting force into axial and radial components. The outer sleeve (4) is fixedly installed on the frame and located outside the tool holder (1). A rectangular through hole is opened inside the outer sleeve (4), and a first buffer pad (11) is fixedly provided on the inner walls of the rectangular through hole. A buffer assembly is provided at one end of the outer sleeve (4) to buffer the vibration of the tool holder (1). An installation ring plate (13) is fixedly installed at the end of the outer sleeve (4) away from the adjustment mechanism. The installation ring plate (13) is provided with multiple threaded holes. A third fixing screw (12) is threaded into the hole and fixed to the frame for installing the outer sleeve (4). Adjustment mechanism, used to adjust the buffering effect of the buffer assembly; When the tool holder (1) vibrates, the first buffer pad (11) absorbs vibration energy from all sides, and the stepped structure reduces the force intensity in one direction.

2. The anti-vibration device for CNC lathe tools according to claim 1, characterized in that, It also includes a limiting component, which is disposed on the top of the tool holder (1) and is used to press the tool plate (2) to reduce shaking. The limiting component includes a pressure plate (7), which is threadedly connected to the tool holder (1) by a first fixing screw (6). One end of the pressure plate (7) is pressed against the top of the tool plate (2).

3. The anti-vibration device for CNC turning tools according to claim 2, characterized in that, The blade plate (2) is provided with a threaded hole, and the second fixing screw (8) is threaded to the blade plate (2) and threaded to the blade holder (1) for fixing the blade plate (2).

4. The anti-vibration device for CNC lathe tools according to any one of claims 1 to 3, characterized in that, The buffer assembly includes multiple elastic plates (20), a mounting plate (15), and a second buffer pad (16). The multiple elastic plates (20) are integrally formed on one end of the outer sleeve (4). The mounting plate (15) is detachably connected to the elastic plates (20). The second buffer pad (16) is fixed to one side of the mounting plate (15). When the front end of the knife holder (1) vibrates, the second buffer pad (16) provides buffering.

5. The anti-vibration device for CNC turning tools according to claim 4, characterized in that, Two symmetrical relief grooves (19) are provided on one side of the elastic plate (20). A threaded hole is provided on the inner wall of one side of the relief groove (19). The fourth fixing screw (14) is threaded to the hole and threaded to the mounting plate (15) to fix the mounting plate (15) to the elastic plate (20).

6. The anti-vibration device for CNC turning tools according to claim 4, characterized in that, The adjusting mechanism includes a threaded ring (10), multiple connecting rods (9) and a sliding pressure ring (3). The threaded ring (10) is threaded onto the outer wall of the outer sleeve (4). The multiple connecting rods (9) are fixedly installed on one side of the threaded ring (10). The sliding pressure ring (3) is fixedly connected to one end of the connecting rods (9). A conical hole (17) is opened inside the sliding pressure ring (3).

Images