High-precision fine adjustment device for linear guide rail of ultra-high-speed numerical control machine tool

Abstract

The utility model relates to the related technical field of numerical control machine tools, in particular to a high-precision fine adjustment device for a linear guide rail of an ultra-high-speed numerical control machine tool, which comprises a machine tool, and adjusting mechanisms are arranged on the surfaces of a fixing plate and a mounting seat. According to the high-precision fine adjustment device for the linear guide rail of the ultra-high-speed numerical control machine tool, through the arrangement of the adjusting mechanism, an operator rotates a knob block to drive an adjusting screw rod to rotate, so that the adjusting block moves linearly along an adjusting groove, a mounting base is driven to move integrally, and after the guide rail is adjusted to an approximately proper position, a locking piece is tightened for fixing; the driving motor is started to drive the lead screw to rotate, the sliding block moves axially along the lead screw, the limiting rod ensures that the sliding block moves stably, the sliding block drives the workbench to move synchronously to achieve fine adjustment, in the fine adjustment process, the positioning probe monitors the position of the sliding block in real time and feeds back the position to the control system, and the control system compares actual position data with preset position data. The rotating speed and the rotating direction of the driving motor are accurately adjusted to move the sliding block to a target position.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a high-precision fine-tuning device for the linear guide rail of an ultra-high-speed CNC machine tool. Background Technology

[0002] A CNC machine tool is an automated machine tool equipped with a program control system. This control system can logically process and decode programs with control codes or other symbolic instructions, thereby enabling the machine tool to move and process parts. A CNC machine tool generally consists of input / output devices, a CNC device, a servo system, a measurement feedback device, and the machine tool body. It can control the moving parts of the machine tool, such as the worktable and cutting tools, through digital code programs to achieve precise machining of parts. It can complete cutting operations on various complex trajectories such as straight lines and curves. It has the advantages of high machining accuracy, high production efficiency, high degree of automation, and adaptability to the machining of complex parts. It is widely used in many industries such as machinery manufacturing, automobiles, aerospace, and electronics. However, in ultra-high-speed machining, even small deviations in the position of the guide rail can be amplified, resulting in large errors in the workpiece's dimensional accuracy, shape accuracy, and surface roughness. Therefore, a high-precision fine-tuning device for the linear guide rail of an ultra-high-speed CNC machine tool is particularly needed.

[0003] However, in terms of machining accuracy, existing ultra-high-speed CNC machine tool linear guides will inevitably experience positional deviations after long-term use due to factors such as wear, mechanical vibration, and thermal deformation. If these deviations are not corrected in a timely and accurate manner, the relative position of the tool and the workpiece will deviate from the ideal state, making it difficult to guarantee the dimensional accuracy of the machined parts. The machining accuracy of complex contours and curved surfaces will be greatly reduced, seriously affecting product quality and leading to an increase in the defect rate. Utility Model Content

[0004] The purpose of this utility model is to provide a high-precision fine-tuning device for linear guideways of ultra-high-speed CNC machine tools, so as to solve the problem of insufficient machining accuracy of existing linear guideways of ultra-high-speed CNC machine tools mentioned in the background art. This device has the function of fine-tuning the internal and external parts of the guideway, thus solving the problem of insufficient machining accuracy of existing linear guideways of ultra-high-speed CNC machine tools.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision fine-tuning device for the linear guide rail of an ultra-high-speed CNC machine tool, comprising a machine tool, characterized in that a fixed plate is fixedly connected above the machine tool, a mounting base is installed above the machine tool, and adjustment mechanisms are provided on the surfaces of both the fixed plate and the mounting base;

[0006] The adjustment mechanism includes an adjustment groove, an adjustment block, an adjustment screw, a torsion block, a locking component, a guide rail, a motor housing, a drive motor, a lead screw, a limit rod, a positioning probe, a slider, and a worktable. The upper surface of the machine tool has an adjustment groove. An adjustment block is fixedly connected to the side of the mounting base. An adjustment screw passes through the interior of both the fixing plate and the adjustment block. A torsion block is fixedly connected to one end of the adjustment screw, and a locking component is threaded onto the outer wall of the other end of the adjustment screw. The inner side of the locking component is fixedly connected to one side of the adjustment block. A guide rail is provided on the surface of the mounting base. A motor housing is mounted on the outer wall of one end of the mounting base. Left and right drive motors are installed inside the motor housing. A lead screw is fixedly connected to the output end of the drive motor. A limit rod is fixedly connected inside the guide rail. A positioning probe is installed on the inner side of the guide rail. A slider is slidably connected to the surfaces of both the lead screw and the limit rod. A worktable is fixedly connected to the upper surface of the slider.

[0007] Preferably, two identical sets of fixing plates are provided above the machine tool, and are symmetrically distributed on both sides of the mounting base with respect to the central axis of the machine tool.

[0008] Preferably, the position of the adjusting block corresponds to the position of the adjusting groove, and the outer wall size of the adjusting block is adapted to the inner wall size of the adjusting groove.

[0009] Preferably, the adjusting screw and the torsion block cooperate to form a rotating structure, and the adjusting block drives the mounting base to move through the adjusting screw.

[0010] Preferably, the drive motor and the lead screw cooperate to form a rotating structure, and the limiting rods are provided in two identical sets, which are symmetrically arranged on both sides of the lead screw with respect to the axis of the lead screw.

[0011] Preferably, multiple sets of positioning probes are provided on the inner side of the guide rail, and are symmetrically distributed on both sides of the inner side of the guide rail with respect to the central axis of the guide rail, and the positioning probes in each set are equally spaced.

[0012] Preferably, the slider slides within the guide rail under the action of the lead screw via the limiting rod, and the outer wall dimension of the bottom of the slider matches the inner wall dimension of the guide rail.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows: This high-precision fine-tuning device for linear guideways of ultra-high-speed CNC machine tools, through the setting of the adjustment mechanism, allows the operator to rotate the knob block during the initial position adjustment of the linear guideway, driving the adjustment screw to rotate, causing the adjustment block to move linearly along the adjustment groove, and driving the mounting base to move as a whole. After the guideway is adjusted to a roughly suitable position, the locking parts are tightened to fix it. After the initial adjustment is completed, if more precise fine-tuning is required, the drive motor is started, driving the lead screw to rotate, causing the slider to move along the lead screw axis. The limit rod ensures that the slider moves smoothly, and the slider drives the worktable to move synchronously to achieve fine-tuning. During the fine-tuning process, the positioning probe monitors the slider position in real time and feeds it back to the control system. The control system compares the actual position with the preset position data. If there is a deviation, the speed and direction of the drive motor are precisely adjusted to move the slider to the target position, ensuring the machining accuracy and stability of the machine tool, thereby solving the problem of insufficient machining accuracy of existing linear guideways for ultra-high-speed CNC machine tools. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the right side view of the appearance of this utility model;

[0015] Figure 2 This is a schematic diagram of the left side view of the appearance of this utility model;

[0016] Figure 3 This is a schematic diagram of the adjustment mechanism of this utility model;

[0017] Figure 4 This is a schematic diagram of the interaction between the guide rail and the slider of this utility model.

[0018] In the diagram: 1. Machine tool; 2. Fixing plate; 3. Mounting base; 4. Adjustment mechanism; 401. Adjustment groove; 402. Adjustment block; 403. Adjustment screw; 404. Twist block; 405. Locking component; 406. Guide rail; 407. Motor housing; 408. Drive motor; 409. Lead screw; 410. Limiting rod; 411. Positioning probe; 412. Slider; 413. Worktable. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4This utility model provides a technical solution: a high-precision fine-tuning device for the linear guide rail of an ultra-high-speed CNC machine tool, comprising a machine tool 1, characterized in that a fixed plate 2 is fixedly connected above the machine tool 1, and a mounting base 3 is installed above the machine tool 1, and an adjustment mechanism 4 is provided on the surface of both the fixed plate 2 and the mounting base 3.

[0021] The adjustment mechanism 4 includes an adjustment groove 401, an adjustment block 402, an adjustment screw 403, a torsion block 404, a locking element 405, a guide rail 406, a motor housing 407, a drive motor 408, a lead screw 409, a limit rod 410, a positioning probe 411, a slider 412, and a worktable 413. An adjustment groove 401 is provided on the upper surface of the machine tool 1. An adjustment block 402 is fixedly connected to the side of the mounting base 3. An adjustment screw 403 passes through the interior of both the fixing plate 2 and the adjustment block 402. A torsion block 404 is fixedly connected to one end of the adjustment screw 403, and a locking element 405 is threaded onto the outer wall surface of the other end of the adjustment screw 403. The inner side of the locking element 405 is fixedly connected to one side of the adjustment block 402. The surface of the mounting base 3 has... A motor housing 407 is mounted on the outer wall of one end of the guide rail 406 and mounting base 3. A left and right drive motor 408 is installed inside the motor housing 407. A lead screw 409 is fixedly connected to the output end of the drive motor 408. A limit rod 410 is fixedly connected inside the guide rail 406. A positioning probe 411 is installed on the inner side of the guide rail 406. A slider 412 is slidably connected to both the lead screw 409 and the limit rod 410. A worktable 413 is fixedly connected to the upper surface of the slider 412. Through the adjustment mechanism 4, when initially adjusting the position of the linear guide rail, the operator manually operates the rotary block 404. Since the rotary block 404 is fixedly connected to the adjusting screw 403, rotating the rotary block 404 will drive the adjusting screw 403 to rotate. 03 passes through the fixed plate 2 and the adjusting block 402, and the adjusting block 402 is fixedly connected to the side of the mounting base 3. The adjusting block 402 is also embedded in the adjusting groove 401 opened on the upper surface of the machine tool 1. As the adjusting screw 403 rotates, under the action of the threaded transmission, the adjusting block 402 will move linearly along the adjusting groove 401, thereby driving the mounting base 3 to move as a whole. In this way, the position of the guide rail 406 can be initially adjusted macroscopically to make it roughly in the appropriate position. After adjusting to the expected position, the operator tightens the locking part 405. Since the locking part 405 is fixedly connected to the adjusting block 402, an axial force will be generated during the tightening process, which will fix the adjusting screw 403, the adjusting block 402 and the fixed plate 2 relative to each other to prevent the adjustment from being completed. If the position of the guide rail 406 changes after the initial position adjustment, and more precise fine-tuning of the position is required, the drive motor 408 inside the motor housing 407 is activated. The drive motor 408, as a power source, drives the lead screw 409 to rotate. The lead screw 409 is connected to the slider 412 via a threaded connection. When the lead screw 409 rotates, the slider 412 moves linearly along the axial direction of the lead screw 409 under its influence. Simultaneously, the limiting rod 410 fixedly connected inside the guide rail 406 limits and guides the slider 412, ensuring that it moves smoothly only in the predetermined direction and preventing deviation or wobbling during movement. A worktable 413 is fixedly connected above the slider 412.Therefore, the movement of slider 412 will drive the worktable 413 to move synchronously, thereby achieving precise fine-tuning of the position of guide rail 406. During the fine-tuning process, the positioning probe 411 installed on the inner side of guide rail 406 plays an important monitoring role. The positioning probe 411 monitors the position information of slider 412 in real time and feeds back the monitored data to the machine tool's control system. The control system compares and analyzes the received actual position data with the preset target position data. If a deviation is found, the control system will precisely adjust the speed and direction of drive motor 408 according to the magnitude and direction of the deviation, so that slider 412 continues to move until the actual position matches the target position, thereby achieving high-precision fine-tuning of the linear guide rail position and ensuring the machining accuracy and stability of the ultra-high-speed CNC machine tool.

[0022] Furthermore, two identical sets of fixing plates 2 are provided above the machine tool 1, and are symmetrically distributed on both sides of the mounting base 3 with respect to the central axis of the machine tool 1. The fixing plates 2 provide a stable support foundation for the adjustment mechanism 4. The symmetrically distributed fixing plates 2 enable the adjusting screw 403 to apply a uniform force to both sides of the mounting base 3 when rotating, ensuring the stability of the mounting base 3 during movement and avoiding tilting or offset caused by uneven force. This ensures the installation accuracy and adjustment accuracy of the guide rail 406, laying a good foundation for subsequent high-precision fine-tuning operations.

[0023] Furthermore, the position of the adjusting block 402 corresponds to the position of the adjusting groove 401, and the outer wall size of the adjusting block 402 is adapted to the inner wall size of the adjusting groove 401. Through the setting of the adjusting groove 401 and the adjusting block 402, the precise guidance and positioning of the mounting base 3 on the machine tool 1 is realized. The adjusting block 402 can slide smoothly in the adjusting groove 401. The two work closely together, effectively restricting the degree of freedom of the mounting base 3 in the horizontal direction, so that it can only move along the direction of the adjusting groove 401, avoiding unnecessary shaking or displacement deviation of the mounting base 3 during the adjustment process, and improving the accuracy and reliability of the initial position adjustment.

[0024] Furthermore, the adjusting screw 403 and the torsion block 404 cooperate to form a rotating structure. The adjusting block 402 drives the mounting base 3 to move through the adjusting screw 403. The setting of the adjusting screw 403 and the torsion block 404 provides a convenient and precise adjustment method for the initial position adjustment of the mounting base 3. The operator only needs to turn the torsion block 404 to easily rotate the adjusting screw 403. Utilizing the principle of screw transmission, the rotational motion is converted into the linear motion of the adjusting block 402 and the mounting base 3. This adjustment method can achieve fine control of the position of the mounting base 3 and can quickly and accurately adjust the position of the guide rail 406 according to actual needs, meeting the requirements of different processing tasks for the guide rail position.

[0025] Furthermore, the drive motor 408 and the lead screw 409 cooperate to form a rotating structure. Two sets of limit rods 410 are provided, symmetrically arranged on both sides of the lead screw 409 around its axis. Through the arrangement of the drive motor 408, the lead screw 409, and the limit rods 410, precise driving and stable guidance of the slider 412 and the worktable 413 are achieved. The drive motor 408 provides power to drive the lead screw 409 to rotate, converting the rotational motion into the linear motion of the slider 412, thereby achieving fine adjustment of the position of the guide rail 406. The symmetrically arranged limit rods 410 can effectively limit the swaying and offset of the slider 412 during the movement, ensuring that the slider 412 moves smoothly along the axial direction of the lead screw 409, improving the accuracy and stability of fine adjustment, and ensuring that the worktable 413 can accurately reach the predetermined position.

[0026] Furthermore, multiple sets of positioning probes 411 are arranged inside the guide rail 406, symmetrically distributed on both sides of the guide rail 406 along its central axis, with equal spacing between each set of positioning probes 411. This arrangement of positioning probes 411 enables comprehensive and high-precision real-time monitoring of the slider 412's position. The symmetrical and equally spaced distribution of multiple sets of positioning probes 411 allows for the acquisition of slider 412's position information from different locations, reducing monitoring errors and improving the accuracy and reliability of monitoring. By feeding back the monitored position data to the machine tool's control system, the control system can promptly and accurately adjust the operating state of the drive motor 408, ensuring that the slider 412 can move according to the preset position, thus achieving high-precision fine-tuning of the guide rail 406's position.

[0027] Furthermore, under the action of the lead screw 409, the slider 412 slides within the guide rail 406 via the limiting rod 410, and the outer wall dimension of the bottom of the slider 412 matches the inner wall dimension of the guide rail 406. Through the arrangement of the guide rail 406 and the slider 412, the smooth sliding and precise positioning of the slider 412 within the guide rail 406 are ensured. The tight fit of the dimensions reduces the gap between the slider 412 and the guide rail 406, reduces the shaking and vibration of the slider 412 during the sliding process, and improves the smoothness of the movement. At the same time, this precise fit also ensures that the slider 412 can move accurately along the direction of the guide rail 406, so that the worktable 413 can accurately follow the movement of the slider 412, realize precise fine adjustment of the position of the guide rail 406, and ensure the machining accuracy and stability of the ultra-high speed CNC machine tool.

[0028] Working principle: When making initial position adjustments to the linear guide rail, the operator manually operates the rotary block 404. Since the rotary block 404 is fixedly connected to the adjusting screw 403, rotating the rotary block 404 will drive the adjusting screw 403 to rotate. The adjusting screw 403 passes through the fixed plate 2 and the adjusting block 402, and the adjusting block 402 is fixedly connected to the side of the mounting base 3. The adjusting block 402 is also embedded in the adjusting groove 401 opened on the upper surface of the machine tool 1. As the adjusting screw 403 rotates, under the action of threaded transmission, the adjusting block 402 will move linearly along the adjusting groove 401, thereby driving the mounting base 3 to move as a whole. In this way, the position of the guide rail 406 can be adjusted. A preliminary macroscopic adjustment is performed to roughly position it in the desired location. Once the desired position is reached, the operator tightens the locking component 405. Since the locking component 405 is fixedly connected to the adjusting block 402, axial force is generated during tightening, which fixes the adjusting screw 403 relative to the adjusting block 402 and the fixing plate 2, preventing the adjusted position from changing. After completing the preliminary position adjustment, if more precise fine-tuning of the guide rail 406 is required, the drive motor 408 inside the motor housing 407 is started. The drive motor 408 serves as a power source, and its output drives the lead screw 409 to rotate. The lead screw 409 is connected to the slider 412 via a threaded pair. When the lead screw 409 rotates... The slider 412 moves linearly along the axial direction of the lead screw 409 under the drive of the lead screw 409. Simultaneously, the limiting rod 410 fixedly connected inside the guide rail 406 limits and guides the slider 412, ensuring that it moves smoothly only in the predetermined direction and preventing deviation or wobbling during movement. A worktable 413 is fixedly connected above the slider 412, so the movement of the slider 412 causes the worktable 413 to move synchronously, thereby achieving precise fine-tuning of the guide rail 406's position. During this fine-tuning process, the positioning probe 411 installed inside the guide rail 406 plays a crucial monitoring role, providing real-time monitoring. The position information of slider 412 is collected and the monitored data is fed back to the machine tool's control system. The control system compares and analyzes the received actual position data with the preset target position data. If a deviation is found, the control system will precisely adjust the speed and direction of drive motor 408 according to the magnitude and direction of the deviation, so that slider 412 continues to move until the actual position matches the target position. This achieves high-precision fine-tuning of the linear guide rail position, ensuring the machining accuracy and stability of the ultra-high-speed CNC machine tool. The drive motor 408 is model Y315S-2. This completes the use of a high-precision fine-tuning device for the linear guide rail of an ultra-high-speed CNC machine tool.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision fine adjustment device for linear guide rails of ultra-high-speed CNC machine tools, comprising a machine tool (1), characterized in that, The upper side of the machine tool (1) is fixedly connected with a fixed plate (2), and the upper side of the machine tool (1) is provided with a mounting seat (3), and the surfaces of the fixed plate (2) and the mounting seat (3) are provided with adjusting mechanisms (4). The adjusting mechanism (4) comprises an adjusting groove (401), an adjusting block (402), an adjusting screw (403), a rotating block (404), a locking piece (405), a guide rail (406), a motor shell (407), a driving motor (408), a lead screw (409), a limiting rod (410), a positioning probe (411), a sliding block (412) and a workbench (413), the upper surface of the machine tool (1) is provided with an adjusting groove (401), the side of the mounting seat (3) is fixedly connected with an adjusting block (402), the interiors of the fixed plate (2) and the adjusting block (402) are penetrated through with adjusting screws (403), one end of the adjusting screw (403) is fixedly connected with a rotating block (404), the other end of the adjusting screw (403) is threadedly connected with a locking piece (405) on the outer wall surface, the inner side of the locking piece (405) is fixedly connected on one side of the adjusting block (402), the surface of the mounting seat (3) is provided with a guide rail (406), one end of the outer wall of the mounting seat (3) is provided with a motor shell (407), the interior of the motor shell (407) is provided with a driving motor (408), the output end of the driving motor (408) is fixedly connected with a lead screw (409), the interior of the guide rail (406) is fixedly connected with a limiting rod (410), the inner side of the guide rail (406) is provided with a positioning probe (411), the surfaces of the lead screw (409) and the limiting rod (410) are slidably connected with a sliding block (412), and the upper surface of the sliding block (412) is fixedly connected with a workbench (413).

2. The high-precision fine adjustment device of a linear guide rail of an ultra-high-speed CNC machine tool according to claim 1, characterized in that: The fixed plate (2) is provided with two groups of the same on the upper side of the machine tool (1) and is symmetrically distributed on the two sides of the mounting seat (3) with the central axis of the machine tool (1) as the center.

3. The high-precision fine adjustment device of the linear guide rail of the ultra-high-speed CNC machine tool according to claim 1, characterized in that: The position of the adjusting block (402) corresponds to the position of the adjusting groove (401), and the outer wall size of the adjusting block (402) is adapted to the inner wall size of the adjusting groove (401).

4. The high-precision fine adjustment device of the linear guide rail of the ultra-high-speed CNC machine tool according to claim 1, characterized in that: The adjusting screw (403) and the rotating block (404) cooperatively form a rotating structure, and the adjusting block (402) drives the mounting seat (3) to move through the adjusting screw (403).

5. The high-precision fine adjustment device of the linear guide rail of the ultra-high-speed CNC machine tool according to claim 1, characterized in that: The driving motor (408) and the lead screw (409) cooperatively form a rotating structure, and the limiting rod (410) is provided with two groups of the same and is symmetrically arranged on the two sides of the lead screw (409) with the axis of the lead screw (409) as the center.

6. The high-precision fine adjustment device of a linear guide rail of an ultra-high-speed CNC machine tool according to claim 1, characterized in that: The positioning probe (411) is provided with multiple groups on the inner side of the guide rail (406) and is symmetrically distributed on the two sides of the interior of the guide rail (406) with the central axis of the guide rail (406) as the center, and each group of the positioning probe (411) is equidistantly distributed.

7. The high-precision fine adjustment device of a linear guide rail of an ultra-high-speed CNC machine tool according to claim 1, characterized in that: The sliding block (412) slides in the guide rail (406) through the limiting rod (410) under the action of the lead screw (409), and the outer wall size of the bottom of the sliding block (412) is consistent with the inner wall size of the guide rail (406).

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