Anti-vibration numerical control four-axis rotary table stable structure

Abstract

The utility model provides a kind of stable structure of vibration-proof numerical control four-axis rotary table, belong to numerical control processing technical field, including four-axis rotary table, anti-vibration assembly and brake assembly;The bottom of four-axis rotary table is equipped with mounting plate;The utility model: when the weight of four-axis rotary table is passed to piston block by pressure disc, piston block is contacted with damping block, and it is inflated by adjustable flow valve surface air inlet connector, gas enters rigid outer sleeve inside by inflation pipe, so that rubber air spring is inflated under the action of air pressure and piston block is lifted, so that pressure disc supports four-axis rotary table, when four-axis rotary table is affected by vibration, the air pressure in rubber air spring is adjusted by adjustable flow valve, so that its natural frequency is lower than the working frequency of four-axis rotary table, rubber air spring can absorb most of vibration energy, avoid vibration transmission to four-axis rotary table, to improve numerical control processing precision.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, specifically to a vibration-resistant CNC four-axis rotary table stabilization structure. Background Technology

[0002] In the field of CNC machining, the four-axis rotary table is a key component for realizing multi-directional rotational machining of workpieces, and its stability directly affects the machining quality. As the manufacturing industry develops towards high precision and high efficiency, higher requirements are placed on the performance of CNC four-axis rotary tables. However, current CNC four-axis rotary tables generally suffer from vibration problems during operation. External environmental factors such as floor vibration in the machining workshop and vibration generated by the operation of other equipment can also be transmitted to the CNC rotary table through the foundation, interfering with the normal operation of the rotary table. Due to the lack of anti-vibration structural design, the rotary table vibrates during machining, affecting machining accuracy. Based on this, designing an effective anti-vibration stabilizing structure for CNC four-axis rotary tables has become an urgent need to improve CNC machining accuracy and promote the high-quality development of the manufacturing industry. Utility Model Content

[0003] The purpose of this invention is to provide a vibration-resistant stabilizing structure for a four-axis CNC turntable to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a vibration-resistant CNC four-axis turntable stabilization structure, comprising a four-axis turntable, a vibration-resistant component, and a braking component; Wherein: a mounting plate is installed at the bottom of the four-axis rotary table, and a base is provided at the bottom of the mounting plate; The vibration damping assembly includes mounting bases installed at the four corners of the base surface. A rigid outer sleeve is fixedly installed in the center of the surface of the mounting base. A damping block is installed inside the rigid outer sleeve. A rubber air spring is installed on the top of the inner wall of the rigid outer sleeve. A piston block is installed in the center of the rubber air spring. A pressure plate is installed on the top of the piston block. An adjustable flow valve is installed on the outer wall of the rigid outer sleeve. An air inlet is installed on the surface of the adjustable flow valve. An inflation pipe is installed on the surface of the adjustable flow valve above the air inlet. One end of the inflation pipe is connected to the rigid outer sleeve. The braking assembly includes a drive shaft for providing drive to a four-axis rotary table. A brake disc is fixedly mounted on the surface of the drive shaft. Brake supports are symmetrically arranged on both sides of the brake disc. A brake cylinder is movably mounted inside the brake support. Friction pads are installed on the telescopic end of the brake cylinder and the inner side of the brake support. The brake disc is inserted between the two friction pads.

[0005] As a preferred embodiment of the present invention: the base is composed of two first movable frames and two second movable frames. One end of the two first movable frames is connected to a first adjusting rod, and one end of the two second movable frames is provided with a first adjusting groove. The first adjusting rod is slidably inserted into the first adjusting groove.

[0006] As a preferred embodiment of the present invention: in one of the first movable frames and the second movable frame, the other end is connected to a second adjusting rod, and in the other of the first movable frame and the second movable frame, a second adjusting groove is opened at the other end, and the second adjusting rod is slidably inserted into the second adjusting groove.

[0007] As a preferred embodiment of the present invention: both ends of the first adjusting rod and the second adjusting rod are connected to limit blocks, and both sides of the first adjusting groove and the two second adjusting grooves are provided with strip grooves, and the limit blocks are slidably inserted into the strip grooves.

[0008] As a preferred embodiment of this utility model: connecting bolts are installed around the top of the pressure plate, the connecting bolts are inserted around the bottom of the mounting plate, and locking nuts are threaded onto the surface of the connecting bolts.

[0009] As a preferred embodiment of this utility model, mounting holes are provided around the surface of the mounting base.

[0010] Compared with the prior art, the beneficial effects of this utility model are: (1) When the weight of the four-axis rotary table is transmitted to the piston block through the pressure plate, the piston block contacts the damping block and is inflated through the air inlet on the surface of the adjustable flow valve. The gas enters the interior of the rigid jacket through the inflation pipe, causing the rubber air spring to expand under the action of air pressure and lift the piston block, so that the pressure plate supports the four-axis rotary table. When the four-axis rotary table is affected by vibration, the air pressure in the rubber air spring is adjusted by the adjustable flow valve so that its natural frequency is lower than the working frequency of the four-axis rotary table. The rubber air spring can absorb most of the vibration energy and prevent the vibration from being transmitted to the four-axis rotary table, thereby improving the CNC machining accuracy. (2) A drive shaft is installed on the back of the four-axis turntable. A brake disc is fixedly installed on the surface of the drive shaft. Brake brackets are symmetrically arranged on both sides of the brake disc. A brake cylinder is installed inside the brake bracket. When the brake cylinder works, it pushes the friction pad at the telescopic end to approach the friction pad on the inner side of the brake bracket, so that it can be clamped by the friction pads set on both sides of the brake disc surface to achieve the braking effect. The dual braking ensures stable start and stop of the brake disc and reduces the vibration generated during the braking process. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2This is a schematic diagram of the vibration damping component structure of this utility model; Figure 3 This is a schematic diagram of the brake assembly structure of this utility model; Figure 4 This is a schematic diagram of the base structure of this utility model.

[0012] In the diagram: 1. Four-axis rotary table; 2. Mounting plate; 3. Base; 31. First movable frame; 32. Second movable frame; 33. First adjusting rod; 34. First adjusting groove; 35. Second adjusting rod; 36. Second adjusting groove; 37. Limiting block; 38. Strip groove; 4. Vibration damping assembly; 41. Mounting seat; 42. Rigid outer sleeve; 43. Damping block; 44. Rubber air spring; 45. Piston block; 46. Pressure plate; 47. Adjustable flow valve; 48. Air inlet; 49. Inflation pipe; 5. Brake assembly; 51. Drive shaft; 52. Brake disc; 53. Brake bracket; 54. Brake cylinder; 6. Connecting bolt; 7. Locking nut; 8. Mounting hole. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0014] Please see Figure 1-4 A vibration-resistant CNC four-axis rotary table stabilization structure includes: a four-axis rotary table 1, a vibration-resistant component 4, and a braking component 5; a mounting plate 2 is installed at the bottom of the four-axis rotary table 1, and a base 3 is provided at the bottom of the mounting plate 2; Please see Figure 1 , Figure 2 The vibration damping component 4 includes mounting bases 41 installed at the four corners of the surface of the base 3. A rigid outer sleeve 42 is fixedly installed in the middle of the surface of the mounting base 41. A damping block 43 is installed inside the rigid outer sleeve 42. A rubber air spring 44 is installed on the top of the inner wall of the rigid outer sleeve 42. A piston block 45 is installed in the middle of the rubber air spring 44. A pressure plate 46 is installed on the top of the piston block 45. An adjustable flow valve 47 is installed on the outer wall of the rigid outer sleeve 42. An air inlet 48 is installed on the surface of the adjustable flow valve 47. An inflation pipe 49 is installed on the surface of the adjustable flow valve 47 above the air inlet 48. One end of the inflation pipe 49 is connected to the rigid outer sleeve 42.

[0015] In practical use: When the weight of the four-axis rotary table 1 is transferred to the piston block 45 through the pressure plate 46, the piston block 45 contacts the damping block 43 and is inflated through the air inlet 48 on the surface of the adjustable flow valve 47. The gas enters the interior of the rigid outer sleeve 42 through the air inlet pipe 49, causing the rubber air spring 44 to expand under the action of air pressure and lift the piston block 45, so that the pressure plate 46 supports the four-axis rotary table 1. When the four-axis rotary table 1 is affected by vibration, the air pressure in the rubber air spring 44 is adjusted by the adjustable flow valve 47 so that its natural frequency is lower than the working frequency of the four-axis rotary table 1. The rubber air spring 44 can absorb most of the vibration energy and prevent the vibration from being transmitted to the four-axis rotary table 1, thereby improving the CNC machining accuracy.

[0016] Please see Figure 1 , Figure 3 The brake assembly 5 includes a drive shaft 51 for providing drive to the four-axis turntable 1. A brake disc 52 is fixedly mounted on the surface of the drive shaft 51. Brake brackets 53 are symmetrically arranged on both sides of the brake disc 52. A brake cylinder 54 is movably mounted inside the brake bracket 53. Friction pads are installed on both the extension end of the brake cylinder 54 and the inner side of the brake bracket 53. The brake disc 52 is inserted between the two friction pads.

[0017] In practical use: A drive shaft 51 is installed on the back of the four-axis turntable 1. A brake disc 52 is fixedly installed on the surface of the drive shaft 51. Brake brackets 53 are symmetrically arranged on both sides of the brake disc 52. A brake cylinder 54 is movably installed inside the brake bracket 53. When the brake cylinder 54 works, it pushes the friction pad at the telescopic end to move closer to the friction pad on the inner side of the brake bracket 53, so that the friction pads on both sides of the surface of the brake disc 52 can clamp and achieve the braking effect. The dual braking ensures the stable start and stop of the brake disc 52 and reduces the vibration generated during the braking process.

[0018] Please see Figure 4 The base 3 consists of two first movable frames 31 and two second movable frames 32. One end of the two first movable frames 31 is connected to a first adjusting rod 33, and one end of the two second movable frames 32 is provided with a first adjusting groove 34. The first adjusting rod 33 slides through the first adjusting groove 34.

[0019] In practical use: The base 3 consists of two first movable frames 31 and two second movable frames 32. One end of the two first movable frames 31 is connected to a first adjusting rod 33, and one end of the second movable frame 32 is provided with a first adjusting groove 34. The first movable frame 31 slides inside the first adjusting groove 34 at one end of the second movable frame 32 through the first adjusting rod 33, so that the length between the first movable frame 31 and the two second movable frames 32 can be adjusted, thereby driving the pressure plate 46 to connect with the mounting plate 2 of different lengths.

[0020] Please see Figure 4One of the first movable frames 31 and the second movable frame 32 has a second adjusting rod 35 connected to the other end, and the other first movable frame 31 and the second movable frame 32 have a second adjusting groove 36 at the other end, and the second adjusting rod 35 slides through the second adjusting groove 36.

[0021] In practical use: one of the first movable frames 31 and the second movable frame 32 is connected to the other end of a second adjusting rod 35, and the other first movable frame 31 and the second movable frame 32 are provided with a second adjusting groove 36 at the other end. The second adjusting rod 35 slides through the second adjusting groove 36, so that the width between the two first movable frames 31 and the second movable frame 32 can be adjusted to meet the connection with mounting plates 2 of different widths, thereby improving the applicability of the vibration damping component 4.

[0022] Please see Figure 4 Both ends of the first adjusting rod 33 and the second adjusting rod 35 are connected to limit blocks 37. Both sides of the first adjusting groove 34 and the two second adjusting grooves 36 are provided with strip grooves 38, and the limit blocks 37 slide through the strip grooves 38.

[0023] In practical use: Limiting blocks 37 are connected to one end of the first adjusting rod 33 and the second adjusting rod 35. The limiting blocks 37 slide through the strip grooves 38 opened on both sides of the first adjusting groove 34 and the second adjusting groove 36, so as to ensure that the adjusting rod slides stably inside the adjusting groove and prevent it from falling off.

[0024] Please see Figure 2 Connecting bolts 6 are installed around the top of the pressure plate 46. The connecting bolts 6 are inserted around the bottom of the mounting plate 2. Locking nuts 7 are threaded on the surface of the connecting bolts 6.

[0025] In practical use: the pressure plate 46 is connected to the mounting plate 2 by the connecting bolts 6 around the top, and the installation is fixed by the locking nuts 7 on the surface of the connecting bolts 6.

[0026] Please see Figure 1 Mounting holes 8 are provided around the surface of the mounting base 41.

[0027] In practical use: Mounting holes 8 are provided around the surface of the mounting base 41 to facilitate fixed connection with the base 3.

[0028] When the weight of the four-axis rotary table 1 is transferred to the piston block 45 through the pressure plate 46, the piston block 45 contacts the damping block 43 and is inflated through the air inlet 48 on the surface of the adjustable flow valve 47. The gas enters the interior of the rigid outer sleeve 42 through the air inlet pipe 49, causing the rubber air spring 44 to expand under the action of air pressure and lift the piston block 45, so that the pressure plate 46 supports the four-axis rotary table 1. When the four-axis rotary table 1 is affected by vibration, the air pressure in the rubber air spring 44 is adjusted by the adjustable flow valve 47 so that its natural frequency is lower than the working frequency of the four-axis rotary table 1. The rubber air spring 44 can absorb most of the vibration energy and prevent the vibration from being transmitted to the four-axis rotary table 1, thereby improving the CNC machining accuracy.

[0029] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vibration-resistant CNC four-axis rotary table stabilization structure, characterized in that, include: A four-axis rotary table (1) is provided with a mounting plate (2) at the bottom of the four-axis rotary table (1), and a base (3) is provided at the bottom of the mounting plate (2). The vibration damping component (4) includes mounting seats (41) installed at the four corners of the base (3). A rigid outer sleeve (42) is fixedly installed in the middle of the surface of the mounting seat (41). A damping block (43) is installed inside the rigid outer sleeve (42). A rubber air spring (44) is installed on the top of the inner wall of the rigid outer sleeve (42). A piston block (45) is installed in the middle of the rubber air spring (44). A pressure plate (46) is installed on the top of the piston block (45). An adjustable flow valve (47) is installed on the outer wall of the rigid outer sleeve (42). An air inlet (48) is installed on the surface of the adjustable flow valve (47). An inflation pipe (49) is installed on the surface of the adjustable flow valve (47) above the air inlet (48). One end of the inflation pipe (49) is connected to the rigid outer sleeve (42). The brake assembly (5) includes a drive shaft (51) for providing drive to the four-axis turntable (1). A brake disc (52) is fixedly mounted on the surface of the drive shaft (51). Brake brackets (53) are symmetrically arranged on both sides of the brake disc (52). A brake cylinder (54) is movably mounted inside the brake bracket (53). Friction pads are installed on both the extension end of the brake cylinder (54) and the inner side of the brake bracket (53). The brake disc (52) is inserted between the two friction pads.

2. The vibration-resistant CNC four-axis rotary table stabilization structure according to claim 1, characterized in that: The base (3) consists of two first movable frames (31) and two second movable frames (32). One end of the two first movable frames (31) is connected to a first adjusting rod (33), and one end of the two second movable frames (32) is provided with a first adjusting groove (34). The first adjusting rod (33) slides through the first adjusting groove (34).

3. The vibration-resistant CNC four-axis rotary table stabilization structure according to claim 2, characterized in that: One of the first movable frame (31) and the second movable frame (32) is connected to a second adjusting rod (35) at the other end, and the other of the first movable frame (31) and the second movable frame (32) is provided with a second adjusting groove (36) at the other end, and the second adjusting rod (35) slides through the second adjusting groove (36).

4. The vibration-resistant CNC four-axis rotary table stabilization structure according to claim 2, characterized in that: Limiting blocks (37) are connected to both sides of one end of the first adjusting rod (33) and the second adjusting rod (35). Strip grooves (38) are provided on both sides of the first adjusting groove (34) and the two second adjusting grooves (36). The limiting blocks (37) slide through the strip grooves (38).

5. The vibration-resistant CNC four-axis rotary table stabilization structure according to claim 1, characterized in that: The top periphery of the pressure plate (46) is equipped with connecting bolts (6), which are inserted around the bottom periphery of the mounting plate (2). The surface of the connecting bolts (6) is threaded with locking nuts (7).

6. The vibration-resistant CNC four-axis rotary table stabilization structure according to claim 1, characterized in that: The mounting base (41) has mounting holes (8) around its surface.

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