Large-size screw rod support structure and numerical control equipment thereof

Abstract

This utility model discloses a large-size lead screw support structure and its CNC equipment. The large-size lead screw support structure includes a linear guide, a transmission mechanism, a drive mechanism, and a support mechanism. The transmission mechanism includes a transmission assembly and a lead screw, which passes through the transmission assembly. The drive mechanism drives the transmission assembly to reciprocate along the lead screw. The support mechanism is located below the lead screw and includes a left bearing seat, a right bearing seat, a rotating shaft, and an L-shaped support arm. The left and right bearing seats are located on both sides of the lead screw. The two ends of the rotating shaft are connected to the left and right bearing seats respectively through fixed bushings. The root of the L-shaped support arm is connected to the rotating shaft through a fixed bushing, and the end of the L-shaped support arm rotatably abuts against the lead screw. Based on this support structure, the CNC equipment enhances the support effect for large-size lead screws, reduces deformation and vibration of the lead screw during operation, and improves transmission accuracy, equipment efficiency, and ease of operation.

Description

Technical Field

[0001] This utility model relates to the field of processing machinery and equipment, and in particular to a large-size lead screw support structure and its CNC equipment. Background Technology

[0002] In CNC equipment and various industrial automation equipment, lead screw drives are a common method for achieving precise linear motion. For large lead screws, due to their significant weight, problems such as sagging and vibration are prone to occur during operation, affecting transmission accuracy and equipment stability. Traditional lead screw support structures have limited support effectiveness when dealing with large lead screws, making it difficult to meet the requirements of high precision and high stability. Utility Model Content

[0003] The purpose of this invention is to provide a large-size lead screw support structure and its CNC equipment, which enhances the support effect for large-size lead screws, reduces deformation and vibration of the lead screw during operation, and improves transmission accuracy. Simultaneously, a CNC equipment is constructed based on this support structure, optimizing the overall transmission layout of the equipment and improving its working efficiency and ease of operation.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] This utility model provides a large-size lead screw support structure, including a linear guide, a transmission mechanism, a drive mechanism, and a support mechanism.

[0006] The transmission mechanism includes a transmission component and a lead screw, the lead screw passing through the transmission component, and the drive mechanism drives the transmission component to reciprocate along the lead screw.

[0007] The support mechanism includes a left bearing seat, a right bearing seat, a rotating shaft, and an L-shaped support arm. The left and right bearing seats are located on both sides of the lead screw. The two ends of the rotating shaft are respectively connected to the left and right bearing seats through fixed bushings. The root of the L-shaped support arm is connected to the rotating shaft through the fixed bushings, and the end of the L-shaped support arm rotatably abuts against the lead screw.

[0008] Furthermore, the transmission assembly includes a nut bearing seat, a nut drive bushing, and a timing pulley. The lead screw passes through the nut bearing seat, the nut drive bushing, and the timing pulley. The timing pulley is installed at one end of the nut drive bushing. The inner ring of the nut drive bushing is connected to the lead screw. The outer ring of the nut bearing seat is connected to the nut bearing seat. The drive mechanism drives the timing pulley to rotate, causing the nut drive bushing to reciprocate along the lead screw.

[0009] Furthermore, the transmission mechanism also includes a slide table, the nut bearing and the drive mechanism are mounted on the slide table, a slider is mounted below the slide table, and the slide table is slidably mounted on the linear guide rail via the slider.

[0010] Furthermore, the drive mechanism includes a first motor and a drive wheel, the drive wheel is mounted on the output end of the first motor, and the drive wheel is connected to the synchronous pulley via a synchronous belt.

[0011] Furthermore, the end of the L-shaped support arm is provided with an annular fixing groove that cooperates with the lead screw.

[0012] This utility model also provides a CNC equipment, including a frame and two sets of large-size lead screw support structures, which are symmetrically and laterally installed on the frame.

[0013] Furthermore, a limit post is provided on the frame below the L-shaped support arm to limit the rotation angle of the L-shaped support arm.

[0014] Furthermore, it also includes a longitudinal transmission mechanism, which includes a connecting frame connected to the two sets of large-size screw support structures, a longitudinal guide rail mounted on the connecting frame, a longitudinal transmission seat slidably mounted on the longitudinal guide rail, a longitudinal screw mounted on the connecting frame and used to drive the longitudinal transmission seat to slide, and a second motor mounted on the connecting frame and used to drive the longitudinal screw. The longitudinal screw is driven by the second motor, thereby driving the longitudinal transmission seat to move along the longitudinal guide rail.

[0015] Furthermore, a processing component is mounted on the longitudinal transmission seat.

[0016] Furthermore, it also includes a chassis and a control panel, wherein the chassis is electrically connected to the control panel, the large-size lead screw support structure, the longitudinal transmission mechanism, and the processing components.

[0017] The beneficial effects of this utility model are:

[0018] 1. The support mechanism, consisting of the left bearing seat, right bearing seat, rotating shaft, and L-shaped support arm, provides reliable support during the operation of the lead screw, effectively reducing the sagging and vibration caused by the weight of the large-size lead screw, and significantly improving the accuracy and stability of the lead screw transmission.

[0019] 2. The cooperation between the slide table and the linear guide in the transmission mechanism, as well as the connection between the drive mechanism and the transmission components through the synchronous belt, make the transmission process smoother and more efficient, reduce energy loss, and improve the operating efficiency of the equipment.

[0020] 3. Two sets of symmetrically installed large-size lead screw support structures ensure the balance and stability of the CNC equipment during lateral movement, which is beneficial to improving machining accuracy. The coordinated work of the longitudinal transmission mechanism and the large-size lead screw support structures expands the motion dimensions of the equipment, can meet diverse machining needs, and improves the working efficiency of the equipment.

[0021] 4. The setup of the chassis and control panel enables centralized control and intelligent operation of the equipment, improving the ease of operation for operators and the overall performance of the equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the connection structure of the large-size lead screw support structure provided in this embodiment;

[0023] Figure 2 This is a schematic diagram of the support mechanism in the large-size lead screw support structure of this embodiment;

[0024] Figure 3 for Figure 1 Enlarged view of a portion of region A in the middle;

[0025] Figure 4 for Figure 2 A magnified view of a portion of region B in the middle;

[0026] Figure 5 This is a three-dimensional structural diagram of the CNC equipment provided in this embodiment;

[0027] Figure 6 This is a side view of the CNC equipment provided in this embodiment;

[0028] Figure 7 for Figure 6 Schematic diagram of the C-section;

[0029] Figure label:

[0030] 100-Large Size Screw Support Structure;

[0031] 10-Linear guide rail; 20-Transmission assembly; 21-Nut bearing seat; 22-Nut transmission bushing; 23-Synchronous pulley; 24-Lead screw; 25-Slide table; 251-Slider; 30-Drive mechanism; 31-First motor; 32-Drive wheel; 40-Support mechanism; 41-Left bearing seat; 42-Right bearing seat; 43-Rotating shaft; 44-L-shaped support arm; 441-Annular fixing groove;

[0032] 200-CNC equipment; 210-Frame; 211-Limit post; 220-Longitudinal transmission mechanism; 221-Connecting frame; 222-Longitudinal guide rail; 223-Longitudinal transmission seat; 224-Longitudinal screw; 225-Second motor; 230-Machining component; 240-Control panel. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] This utility model embodiment provides a large-size lead screw support structure 100, including a linear guide rail 10, a transmission mechanism, a drive mechanism 30, and a set of support mechanisms 40. For example... Figure 1 As shown, in this embodiment, two sets of large-size lead screw support structures 100 are interconnected via a connecting frame 221, and the processing component 230 is mounted on the connecting frame 221. In practical applications, the number of support mechanisms 40 can be increased according to the lead screw size.

[0037] like Figures 1 to 3As shown, in this embodiment, the transmission mechanism includes a transmission assembly 20 and a lead screw 24, with the lead screw 24 passing through the transmission assembly 20. The transmission assembly 20 includes a nut bearing 21, a nut drive bushing 22, and a timing pulley 23. The lead screw 24 passes through the nut bearing 21, the nut drive bushing 22, and the timing pulley 23 in sequence, with the timing pulley 23 mounted at one end of the nut drive bushing 22. The inner ring of the nut drive bushing 22 is threadedly connected to the lead screw 24, and the outer ring of the nut bearing 21 is fixedly connected to the nut drive bushing 22. When the drive mechanism 30 is working, it drives the timing pulley 23 to rotate. Since the nut drive bushing 22 is connected to the timing pulley 23, it drives the nut drive bushing 22 to reciprocate along the lead screw 24. In addition, the transmission mechanism is also provided with a slide 25. The nut bearing 21 and the drive mechanism 30 are both mounted on the slide 25. A slider is installed below the slide 25, and the slide 25 is slidably mounted on the linear guide rail 10 via the slider, so that the entire transmission mechanism can move smoothly on the linear guide rail 10.

[0038] like Figure 1 and Figure 3 As shown, in this embodiment, the drive mechanism 30 includes a first motor 31 and a drive wheel 32. The first motor 31 is mounted on the slide table 25, and the drive wheel 32 is mounted on the output end of the first motor 31. The drive wheel 32 is connected to the synchronous pulley 23 via a synchronous belt. After the first motor 31 starts, it drives the drive wheel 32 to rotate, and transmits power to the synchronous pulley 23 via the synchronous belt, thereby driving the transmission component 20.

[0039] like Figure 1 and Figure 4 As shown, in this embodiment, the support mechanism comprises a left bearing seat 41, a right bearing seat 42, a rotating shaft 43, and an L-shaped support arm. The left bearing seat 41 and right bearing seat 42 are respectively disposed on both sides of the lead screw 24. Both ends of the rotating shaft 43 are connected to the left bearing seat 41 and right bearing seat 42 respectively via fixed bushings, achieving stable installation of the rotating shaft 43. The root of the L-shaped support arm is connected to the rotating shaft 43 via a fixed bushing, and its end rotatably abuts against the lead screw 24. Furthermore, the end of the L-shaped support arm is provided with an annular fixing groove 441 that mates with the lead screw 24. This annular fixing groove 441 can better fit with the lead screw 24, enhancing the support effect. Simultaneously, the L-shaped support arm 44 rotates relative to the rotating shaft 43 as the transmission mechanism reciprocates.

[0040] Specifically, during the transmission process of the lead screw 24, the transmission assembly 20 reciprocates along the lead screw 24. The end of the L-shaped support arm rotatably abuts against the lead screw 24. When the transmission assembly 20 reciprocates and moves to the L-shaped support arm, the L-shaped support arm can rotate relative to the rotating shaft 43 by means of its connection with the rotating shaft 43. This rotatable connection allows the L-shaped support arm to provide stable support for the lead screw 24 without hindering its normal rotation, ensuring the smoothness of the lead screw 24 transmission process. At the same time, since the end of the L-shaped support arm is provided with an annular fixing groove 441 that cooperates with the lead screw 24, the annular fixing groove 441 increases the contact area between the two, which can limit the position of the end of the L-shaped support arm on the lead screw 24 to a certain extent, reducing local pressure and allowing it to stably abut against the lead screw 24, thereby supporting the lead screw 24, reducing the shaking and deformation of the lead screw 24 during the transmission process, and improving the stability and accuracy of the transmission.

[0041] like Figures 5 to 7 As shown, this utility model embodiment also provides a CNC equipment 200, including: a frame 210, two sets of large-size lead screw support structures 100, a longitudinal transmission mechanism 220, a processing component 230, a chassis (set inside the frame, not shown) and a control panel 240.

[0042] In this embodiment, two sets of large-size lead screw support structures 100 are symmetrically and laterally mounted on the frame 210. This symmetrical layout helps ensure the balance and stability of the equipment during operation. Specifically, the linear guide rail 10 and the lead screw 24 are mounted on the frame 210. Two limiting posts 211 are provided on the frame 210 below the L-shaped support arm to accurately limit the rotation angle of the L-shaped support arm and prevent excessive rotation of the L-shaped support arm from affecting the normal support of the lead screw 24 and the operation of the equipment.

[0043] In this embodiment, the longitudinal transmission mechanism 220 includes a connecting frame 221, a longitudinal guide rail 222, a longitudinal transmission seat 223, a longitudinal screw 224, and a second motor 225. The connecting frame 221 connects between two sets of large-size screw support structures 100, serving as a connection and support. The longitudinal guide rail 222 is mounted on the connecting frame 221, and the longitudinal transmission seat 223 slides on the longitudinal guide rail 222. The longitudinal screw 224 is mounted on the connecting frame 221 and is used to drive the longitudinal transmission seat 223 to slide. The second motor 225 is mounted on the connecting frame 221 and connected to the longitudinal screw 224. When the second motor 225 is working, it drives the longitudinal screw 224 to rotate, thereby driving the longitudinal transmission seat 223 to move along the longitudinal guide rail 222. A processing assembly 230 is mounted on the longitudinal transmission seat 223 for processing the workpiece.

[0044] The chassis is electrically connected to the control panel 240, the large-size lead screw support structure 100, the longitudinal transmission mechanism 220, and the processing component 230. The chassis provides power supply and control signal transmission for the entire equipment, while the control panel 240 is used by operators to input control commands and monitor the operating status of the equipment.

[0045] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A large-size lead screw support structure, characterized in that: Includes linear guides, transmission mechanisms, drive mechanisms, and support mechanisms. The transmission mechanism includes a transmission component and a lead screw, the lead screw passing through the transmission component, and the drive mechanism drives the transmission component to reciprocate along the lead screw. The support mechanism is located below the lead screw. The support mechanism includes a left bearing seat, a right bearing seat, a rotating shaft, and an L-shaped support arm. The left and right bearing seats are located on both sides of the lead screw. The two ends of the rotating shaft are respectively connected to the left and right bearing seats through fixed bushings. The root of the L-shaped support arm is connected to the rotating shaft through the fixed bushings. The end of the L-shaped support arm rotatably abuts against the lead screw.

2. The large-size lead screw support structure according to claim 1, characterized in that: The transmission assembly includes a nut bearing seat, a nut drive bushing, and a timing pulley. The lead screw passes through the nut bearing seat, the nut drive bushing, and the timing pulley. The timing pulley is installed at one end of the nut drive bushing. The inner ring of the nut drive bushing is connected to the lead screw. The outer ring of the nut bearing seat is connected to the nut bearing seat. The drive mechanism drives the timing pulley to rotate, causing the nut drive bushing to reciprocate along the lead screw.

3. The large-size lead screw support structure according to claim 2, characterized in that: The transmission mechanism also includes a slide table, on which the nut bearing and the drive mechanism are mounted. A slider is installed below the slide table, and the slide table is slidably mounted on the linear guide rail via the slider.

4. The large-size lead screw support structure according to claim 3, characterized in that: The drive mechanism includes a first motor and a drive wheel. The drive wheel is mounted on the output end of the first motor and is connected to the synchronous wheel via a synchronous belt.

5. The large-size lead screw support structure according to claim 1, characterized in that: The end of the L-shaped support arm is provided with an annular fixing groove that cooperates with the lead screw.

6. A numerical control device, characterized in that: It includes a frame and two sets of large-size lead screw support structures as described in any one of claims 1 to 5, wherein the two sets of large-size lead screw support structures are symmetrically and laterally installed on the frame.

7. The CNC equipment according to claim 6, characterized in that: Two limiting posts are provided on the frame below the L-shaped support arm to limit the rotation angle of the L-shaped support arm.

8. The CNC equipment according to claim 6, characterized in that: It also includes a longitudinal transmission mechanism, which comprises: A connecting frame, which is connected to two sets of large-size screw support structures; A longitudinal guide rail is mounted on the connecting frame; A longitudinal transmission seat, which is slidably mounted on the longitudinal guide rail; A longitudinal screw, which is mounted on the connecting frame and used to drive the longitudinal transmission seat to slide; A second motor is mounted on the connecting frame and is used to drive the longitudinal screw. The second motor drives the longitudinal screw, thereby driving the longitudinal transmission seat to move along the longitudinal guide rail.

9. The CNC equipment according to claim 8, characterized in that: The longitudinal transmission seat is equipped with a machining component.

10. The CNC equipment according to claim 6, characterized in that: It also includes a chassis and a control panel, wherein the chassis is electrically connected to the control panel, the large-size lead screw support structure, the longitudinal transmission mechanism and the processing components.

Images