Auxiliary supporting device for lead screw

Abstract

The utility model relates to an auxiliary supporting device for a lead screw, which is arranged between a lathe bed workbench and a lathe bed base and comprises a first supporting seat and two second supporting seats connected to two sides of the first supporting seat. A pair of rollers is horizontally and rotatably arranged on the first supporting seat and is used for supporting the lead screw; a third supporting seat is arranged above the second supporting seat, and a bearing is longitudinally and rotatably arranged above the third supporting seat; a supporting rod is arranged below the second supporting seat, and the bottom end of the supporting rod is connected with a connecting block used for being connected with a bed body base. The supporting device is simple in structure, convenient and easy to install and adjust and low in manufacturing and maintenance cost, the lead screw can be effectively supported through the pair of idler wheels, it is ensured that the lead screw within the movement stroke range is stably supported, it is ensured that the lead screw does not droop or deform, downward bending deflection caused by the dead weight of the lead screw is reduced, vibration generated when the lead screw rotates is reduced, and the service life of the lead screw is prolonged. Therefore, the machining precision and the machining quality of the machine tool are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of machine tool lead screw support devices, and specifically to a lead screw auxiliary support device. Background Technology

[0002] With the rapid development of the equipment manufacturing industry, the demands of the machine tool industry are shifting from simple and general-purpose models to complex, precise, and large-scale models. Machining centers are experiencing increasingly larger machining tables and greater travel in all directions, while simultaneously requiring higher machining quality. However, the increased table size and travel lead to a longer lead screw used for transmission. When placed horizontally, the lead screw will sag due to its own weight, especially during high-speed rotation. In this case, the entire lead screw is prone to chatter, sagging, and deformation. This deformation severely affects the machining accuracy of the machine tool, leading to a lower product qualification rate. Furthermore, the deformation of the lead screw further deteriorates the stress environment of the balls within the lead screw raceway, drastically reducing the lead screw's lifespan, increasing replacement frequency, and impacting machine tool efficiency. Therefore, how to avoid these phenomena during lead screw operation is a technical challenge that needs to be solved by those skilled in the art. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a lead screw auxiliary support device for supporting the lead screw of a machine tool, thereby preventing the lead screw from bending and deforming due to its own weight during transmission.

[0004] The specific technical solution of this utility model is as follows: a lead screw auxiliary support device is provided between the bed worktable and the bed base, including a first support seat and two second support seats connected to both sides of the first support seat; a pair of rollers are horizontally rotatably provided on the first support seat to support the lead screw; a third support seat is provided above the second support seat, and a bearing is longitudinally rotatably provided above the third support seat; a support rod is provided below the second support seat, and a connecting block is connected to the bottom end of the support rod for connecting to the bed base.

[0005] Furthermore, preferably, a spring is provided below the second support base, and the bottom end of the spring is used to connect to the bed base.

[0006] Furthermore, preferably, the support rod is a screw rod with its top end extending through to the upper part of the second support base and fixed by a nut and a flange.

[0007] Furthermore, preferably, the roller and the bearing are rotatably mounted on the first support base and the third support base respectively via pins.

[0008] The beneficial effects of this utility model are:

[0009] (1) The support device has a simple structure, is easy to install and adjust, and has low manufacturing and maintenance costs. It can effectively support the lead screw through a pair of rollers, ensuring that the lead screw is stably supported within the range of motion, preventing the lead screw from sagging or deforming, reducing the downward bending deflection of the lead screw due to its own weight, reducing the vibration when the lead screw rotates, improving the transmission stability of the machine tool, and thus improving the machining accuracy and quality of the machine tool. Moreover, the roller support structure allows the rollers to rotate along with the lead screw, which can effectively reduce the friction between the lead screw and the rollers and extend the service life of the lead screw.

[0010] (2) The bearings on both sides of the support device will rotate in the same direction as the worktable when the bed and the support device come into contact, which can avoid the support device and the worktable from direct hard contact and cause wear on the worktable; moreover, the buffering effect of the springs on both sides can release part of the pressure of the worktable on the support device and protect the support device in the opposite direction.

[0011] (3) The support rod of the support device has an adjustment function, which is conducive to adjusting the contact between the support device and the lead screw, ensuring the accuracy and stability after installation. Moreover, the height of the support device can be adjusted by replacing or adjusting the length of the support rod to adapt to different machine tools. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a lead screw auxiliary support device according to this embodiment;

[0013] Figure 2 This is a front view of a lead screw auxiliary support device according to this embodiment;

[0014] Figure 3 This is a top view of a lead screw auxiliary support device according to this embodiment;

[0015] Figure 4 This is a front view of the connection between the lead screw auxiliary support device and the machine tool in this embodiment;

[0016] Figure 5 This is a top view of the lead screw auxiliary support device assembled with the machine tool in this embodiment;

[0017] In the diagram: 1-First support seat, 2-Second support seat, 3-Third support seat, 4-Roller, 5-Support rod, 6-Connecting block, 7-Bearing, 8-Spring, 9-Lead screw, 10-Bed base, 11-Bed worktable. Detailed Implementation

[0018] To make the technical problems and solutions solved by this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0019] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" 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 an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] like Figures 1 to 4 As shown, the lead screw auxiliary support device provided in this embodiment is located between the bed worktable 10 and the bed base 9, including a first support seat 1 and two second support seats 2 connected to both sides of the first support seat 1; a pair of rollers 4 are horizontally rotatably provided on the first support seat 1 to support the lead screw 9; a third support seat 3 is provided above the second support seat 2, and a bearing 7 is vertically rotatably provided above the third support seat 3; a support rod 5 is provided below the second support seat 2, and a connecting block 6 is connected to the bottom of the support rod 5 to connect to the bed base 10.

[0022] Preferably, a spring 8 is also provided below the second support 2. The bottom end of the spring 8 is used to connect to the bed base 9, and the spring 8 can play a buffering role.

[0023] Preferably, the support rod 5 is a screw rod with its top end extending through to the upper part of the second support seat 2 and fixed by a nut and flange. Such a support rod 5 has an adjustment function, which is beneficial to adjusting the contact between the support device and the screw rod, ensuring the accuracy and stability after installation. Moreover, the height of the support device can be adjusted by replacing or adjusting the length of the support rod 5 to adapt to different machine tools.

[0024] Preferably, the roller 4 and the bearing 7 are rotatably mounted on the first support 1 and the third support 3 respectively via pins.

[0025] Working principle: Connecting and fixing the connecting block 6 and spring 8 to the machine tool bed base 10 completes the installation of the support device. When the lead screw 9 moves above the rollers 4, the two rollers 4 support the lead screw 9, providing excellent support and preventing the lead screw from sagging or deforming. This reduces the downward bending deflection of the lead screw due to its own weight, reduces vibration during lead screw rotation, and improves the transmission stability of the machine tool. Furthermore, the roller support structure ensures that the two rollers 4 rotate in the same direction as the lead screw during rotation, effectively reducing the contact friction between the lead screw 9 and the outer surface of the rollers 4, extending the lead screw's service life. Additionally, the bearings 7 rotatably mounted on both sides of the support device rotate in the same direction as the bed table 11 when it comes into contact with the support device. This prevents direct hard contact between the support device and the worktable, avoiding wear on the worktable and effectively protecting the bed table 11. Moreover, the buffering effect of the springs 8 on both sides of the bearings 7 also releases some of the pressure from the bed table 11 on the support device, providing reverse protection for the support device.

[0026] Of course, on the same machine tool, one such support device can be installed in the middle section, or as follows: Figure 5 As shown, two units are set at both ends of the middle of the machine tool. The specific number can be reasonably determined according to the length of the machine tool lead screw to ensure that the lead screw has sufficient support.

[0027] The present invention has been described in detail above through specific and preferred embodiments. However, those skilled in the art should understand that the present invention is not limited to the embodiments described above. Any modifications or equivalent substitutions made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lead screw auxiliary support device, disposed between the bed worktable (11) and the bed base (10), characterized in that: It includes a first support seat (1) and two second support seats (2) connected to both sides of the first support seat (1); a pair of rollers (4) are horizontally rotatable on the first support seat (1) to support the lead screw (9); a third support seat (3) is provided above the second support seat (2), and a bearing (7) is provided vertically rotatable above the third support seat (3); a support rod (5) is provided below the second support seat (2), and a connecting block (6) is connected to the bottom of the support rod (5) to connect to the bed base (10).

2. The lead screw auxiliary support device according to claim 1, characterized in that: A spring (8) is also provided below the second support base (2), and the bottom end of the spring (8) is used to connect the bed base (10).

3. The lead screw auxiliary support device according to claim 2, characterized in that: The support rod (5) is a screw rod with its top end extending through to the upper part of the second support base (2) and fixed by a nut and a flange.

4. The lead screw auxiliary support device according to claim 3, characterized in that: The roller (4) and bearing (7) are rotatably mounted on the first support seat (1) and the third support seat (3) respectively via pins.

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