Linear guide rail straightening and twisting production line and process thereof

Abstract

The invention discloses a linear guide rail straightening and twisting correction production line and a process thereof, solves the problems that the end part of a linear guide rail cannot be automatically straightened and the linear guide rail cannot be twisted and corrected in the prior art, and has the beneficial effect of ensuring the straightening precision of the linear guide rail. Comprising a rolling device, a first straightening device, a twisting correction device and a second straightening device which are arranged in sequence, the rolling device is used for rolling and straightening the linear guide rail to eliminate large bending of the linear guide rail, the first straightening device is used for straightening the end of the linear guide rail, and the twisting correction device is used for conducting twisting correction on the linear guide rail. The second straightening device straightens the small bending point of the linear guide rail, and output roller ways are arranged at the output ends of the rolling device, the first straightening device, the twisting straightening device and the second straightening device so that conveying of the linear guide rail can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of linear guide rails, in particular to a linear guide rail straightening and twisting production line and a process thereof. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] As the manufacturing industry continues to increase its requirements for machining accuracy, the precision of linear guide rails and slider blanks is also constantly improving. The requirements for straightness and torsion of guide rail blanks are also gradually increasing. Smaller straightness and torsion can reduce grinding allowance, improve machining efficiency, uniform hardened layer depth, and reduce deformation of the finished product.

[0004] At present, the straightening of guide rail blanks is mainly done manually. Manual testing of the straightness and torsion of the linear guide rail has the problems of high labor intensity, low processing efficiency and high processing cost. Although there are some straightening machines that can straighten the large curvature of the linear guide rail, the end of the linear guide rail has a certain curvature due to the drawing process during the linear guide rail forming process. In addition, due to the existence of the roller wheel gauge during the straightening process, there is a straightening blind area in the straightening process, and the end of the linear guide rail cannot be straightened.

[0005] The existing straightening machine is also unable to correct the distortion of the linear guide rail, and distortion correction is also very necessary to correct the linear guide rail to avoid distortion;

[0006] Existing straightening machines can straighten linear guide rails with large curvatures, but cannot straighten linear guide rails with small curvatures, resulting in a low pass rate for linear guide rails.

[0007] In addition, although the existing straightening device can straighten the linear guide rail, manual inspection of the straightness of the linear guide rail is required after the correction. Manual inspection has the problem of low straightening efficiency and also has certain errors. Summary of the Invention

[0008] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a linear guide rail straightening and twisting production line that can effectively ensure the straightness of the linear guide rail and ensure the accuracy of the correction.

[0009] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0010] A linear guide rail straightening and twisting production line comprises a rolling device, a first straightening device, a twisting device and a second straightening device arranged in sequence. The rolling device is used to perform rolling straightening on the linear guide rail to eliminate larger bends of the linear guide rail. The first straightening device is used to straighten the end of the linear guide rail. The twisting device is used to correct the twisting of the linear guide rail. The second straightening device straightens the smaller bending points of the linear guide rail. Output rollers are provided at the output ends of the rolling device, the first straightening device, the twisting device and the second straightening device to realize the transportation of the linear guide rail.

[0011] As described above, in a linear guide rail straightening and twisting production line, a flipping mechanism is provided at each output roller, and the flipping mechanism includes a flipping power source, the output end of the flipping power source is connected to a shift block, and the shift block can be placed between two adjacent rollers of the output roller, and the shift block can contact the linear guide rail.

[0012] In the linear guide straightening and twisting production line as described above, each output roller is provided with a laser camera, which is connected to a controller, and each controller is respectively connected to the corresponding rolling device, the first straightening device, the twisting device and the second straightening device.

[0013] In the linear guide rail straightening and twisting production line described above, the controller straightens the linear guide rail according to the following contents:

[0014] The laser camera acquires the data of the measuring points and the alignment reference points on the linear guide rail;

[0015] The controller calculates the eccentricity data by the difference between the measuring point and the line connecting the two straightening reference points, and calculates the bending amount based on the eccentricity data;

[0016] The flip mechanism is actuated to flip the linear guide rail so that the high point of the linear guide rail to be aligned faces upwards;

[0017] The controller calculates the optimal straightening amount according to the bending amount of the linear guide rail, and controls the corresponding mechanism to perform straightening according to the optimal straightening amount.

[0018] In the linear guide rail straightening and twisting production line as described above, the straightening reference point is a point at the end of the linear guide rail.

[0019] As described above, in a linear guide rail straightening and twisting production line, the rolling device includes two follower support rollers, the two follower support rollers are set at a distance, the two follower support rollers are supported by a first frame, the follower support rollers are rotatable relative to the first frame, and a downward pressure driving roller is set above the two follower support rollers, and the downward pressure driving roller is rotatable and liftable relative to the first frame.

[0020] As described above, in a linear guide rail straightening and twisting production line, the first straightening device is placed at both ends of the linear guide rail, the first straightening device includes a second frame, the second frame includes an upper pressure head and two lower pressure heads, the upper pressure head can be raised and lowered relative to the second frame and can be moved along the length direction of the linear guide rail, the outer lower pressure head is fixed to the second frame, and the inner lower pressure head can be connected along the length direction of the linear guide rail.

[0021] As described above, in a linear guide rail straightening and twisting production line, the twisting device includes two sets of jaws, the two sets of jaws are set at a distance, the jaws are installed on the third frame through a rotating assembly, the two sets of jaws rotate in opposite directions, and the jaws are force-amplifying locking jaws.

[0022] As described above, in a linear guide rail straightening and twisting production line, the second straightening mechanism includes two support blocks, which are installed on the fourth frame. The support blocks can move along the length direction of the linear guide rail. A power pressure head is arranged above the two support blocks, and the power pressure head can be raised and lowered relative to the fourth frame.

[0023] In a second aspect, the present invention further provides a linear guide rail straightening and twisting process, which uses the linear guide rail straightening and twisting production line described above, and includes the following contents:

[0024] The roller pressing device is used to straighten the larger bends of the linear guide. After completion, the linear guide enters the output roller at the output end of the roller pressing device. The corresponding laser camera straightens the linear guide, and the corresponding controller adjusts the stroke of the roller pressing device according to the straightening results.

[0025] The linear guide rail enters the first straightening device, which straightens the kinks at the end of the linear guide rail. After completion, the linear guide rail enters the output roller at the output end of the first straightening device, where the corresponding laser camera straightens the linear guide rail. The corresponding controller adjusts the stroke of the first straightening device according to the straightening result.

[0026] The linear guide rail enters the twisting correction device, which corrects the distortion of the linear guide rail. After the correction is completed, the linear guide rail enters the output roller at the output end of the twisting correction device, where the corresponding laser camera straightens the linear guide rail. The corresponding controller adjusts the twisting correction device according to the straightening result.

[0027] The linear guide rail enters the second straightening device, which straightens the bending point of the linear guide rail. The linear guide rail enters the output roller at the output end of the second straightening device, and is straightened by the corresponding laser camera. The corresponding controller adjusts the stroke of the second straightening device according to the straightening result.

[0028] The beneficial effects of the present invention are as follows:

[0029] 1) The present invention can perform roller straightening, first straightening, twisting and second straightening on the linear guide rail through a multi-channel device. The first straightening device straightens the end of the linear guide rail. Compared with simply using roller straightening, it avoids the straightening blind spot at the end of the linear guide rail; the twisting device is used to correct the distortion of the linear guide rail to reduce the distortion of the linear guide rail. The second straightening device straightens the smaller bending point of the linear guide rail. In this way, the linear guide rail is straightened from multiple angles such as distortion, larger bending point and smaller bending point, thereby fully ensuring the straightening accuracy of the linear guide rail.

[0030] 2) An output roller is provided at the output end of each device in the present invention. The output roller is used to transport the linear guide rail to the next device, which is conducive to mechanized operation. A flipping mechanism is provided at the output roller to realize the flipping of the linear guide rail. A laser camera is provided at the output roller to detect the straightness of the linear guide rail through the laser camera. According to the detection result and the setting of the flipping mechanism, the linear guide rail is sent back for re-straightening.

[0031] 3) In the present invention, the laser camera obtains data on the measuring points and the straightening reference points of the linear guide rail, takes the line connecting the straightening reference points as the reference line, obtains the eccentricity data between the measuring point and the reference line, obtains the bending value of the measuring point, flips the linear guide rail after detection, and performs detection and calibration on multiple surfaces of the linear guide rail to ensure the accuracy of the detection results, so as to ensure the working quality of the rolling device, the first straightening device, the twisting device and the second straightening device.

[0032] 4) The rolling device in the present invention is reasonably structured, the first straightening device is reasonably structured, the lower pressure head on the inside is movable and can be adjusted within a set range along the end of the straight line, the twisting device realizes the twisting of the linear guide rail through two sets of jaws, and the second straightening mechanism straightens the small bending points of the linear guide rail through the power pressure head, and the support block can move along the length direction of the linear guide rail to meet the straightening of small bending points at different positions of the linear guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0034] Figure 1 It is a schematic diagram of a rolling device in a linear guide rail straightening and twisting production line according to one or more embodiments of the present invention.

[0035] Figure 2 It is a schematic diagram of a first straightening device in a linear guide rail straightening and twisting production line according to one or more embodiments of the present invention.

[0036] Figure 3It is a schematic diagram of a torque calibration device in a linear guide rail straightening and torque calibration production line according to one or more embodiments of the present invention.

[0037] Figure 4 It is a schematic diagram of a second straightening device in a linear guide rail straightening and twisting production line according to one or more embodiments of the present invention.

[0038] Figure 5 It is a schematic diagram of the change in curvature of a linear guide rail as the flip angle of the linear guide rail changes in a linear guide rail straightening and twisting production line according to one or more embodiments of the present invention.

[0039] Figure 6 It is a schematic diagram of measurement points and reference points acquired by a laser camera in a linear guide rail straightening and twisting production line according to one or more embodiments of the present invention.

[0040] Figure 7 It is a schematic diagram of measuring points and comparison axes in a linear guide rail straightening and twisting production line according to one or more embodiments of the present invention.

[0041] Figure 8 It is a schematic diagram of a shift block in a turning mechanism of a linear guide straightening and twisting production line according to one or more embodiments of the present invention.

[0042] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0043] Among them: 1. Linear guide, 2. Downward pressure drive roller, 3. Follow-up support roller, 4. Upper pressure head, 5. Lower pressure head, 6. Jaw, 7. Power pressure head, 8. Support block, 9. Shift block. DETAILED DESCRIPTION

[0044] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise clearly indicated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprising" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations;

[0046] As introduced in the background technology, the existing technology cannot automatically straighten the ends of linear guide rails and does not perform twisting correction on linear guide rails. In order to solve the above technical problems, the present invention proposes a linear guide rail straightening and twisting production line.

[0047] Example 1

[0048] In a typical embodiment of the present invention, referring to Figure 1 As shown, a linear guide rail straightening and twisting production line includes a rolling device, a first straightening device, a twisting device and a second straightening device arranged in sequence. The rolling device is used to roll-straighten the linear guide rail 1 to eliminate the larger bending of the linear guide rail. The first straightening device is used to straighten the end of the linear guide rail 1. The twisting device is used to correct the twisting of the linear guide rail. The second straightening device straightens the smaller bending points of the linear guide rail 1. Output rollers are provided at the output ends of the rolling device, the first straightening device, the twisting device and the second straightening device to realize the transportation of the linear guide rail 1.

[0049] It should be noted that each output roller is provided with a turning mechanism, which includes a turning power source, such as a turning motor whose output end is connected to a shift block 9, which can be placed between two adjacent rollers of the output roller. Figure 8 As shown, the shift block 9 can be L-shaped, and the shift block 9 can contact the linear guide rail 1. The shift block 1 drives the linear guide rail to flip, thereby achieving the straightening work on the other side of the linear guide rail.

[0050] Among them, each output roller is equipped with a laser camera, which is a CCD laser camera. The laser camera is connected to a controller, which can be a computing terminal. Each controller is connected to the corresponding rolling device, the first straightening device, the twisting device and the second straightening device respectively, so that the controller adjusts the action of each device according to the straightening results.

[0051] The controller aligns the linear guide rail 1 according to the following:

[0052] The laser camera collects data of the measuring point and the alignment reference point (the two end points of the linear guide are determined as the alignment reference points, and the point between the two ends is the measuring point);

[0053] The controller calculates the eccentricity data by the difference between the measuring point and the line connecting the two straightening reference points, and calculates the bending amount based on the eccentricity data. The existing floating measurement algorithm is used to complete the acquisition of the workpiece bending amount. Its basic principle comes from the study of "three-dimensional rigid body motion in space". For example, refer to Figure 6 and Figure 7As shown, the data of the alignment reference points at both ends and the middle measuring point are obtained, and the line connecting the alignment reference points at both ends is used as the baseline. The middle measuring point is compared with the baseline, i.e., the comparison axis, to calculate the offset and identify the direction to obtain the eccentricity data;

[0054] The driving motor drives the flip plate to move the linear guide rail, causing the linear guide rail to flip so that the high point of the linear guide rail to be aligned faces upwards;

[0055] The controller calculates the optimal straightening amount based on the curvature of the linear guide rail and can directly use the curvature of the linear guide rail as the optimal straightening amount to control the corresponding device to perform precise positioning and straightening.

[0056] When the straightening reaches the expected result, the straightening effect is tested, and the bending amount of other measuring points is tested at the same time, and the next straightening position and straightening stroke are determined.

[0057] In this embodiment, a three-roller rolling method is used to straighten the linear guide rail 1 to eliminate the large curvature of the linear guide rail 1. The main function is to use a rolling device such as a three-roller rolling device to roll the linear guide rail before calibration to eliminate the large curvature, S-curvature and possible dead points of the linear guide rail 1.

[0058] Among them, the rolling device includes two follower support rollers 3, and the interval between the two follower support rollers 3 is set. The two follower support rollers 3 are supported by the first frame. The follower support rollers 3 can rotate relative to the first frame, and the distance between the two follower support rollers 3 is adjustable, and the adjustable range is 150mm-300mm. A downward pressure drive roller 2 is set above the two follower support rollers 3. The downward pressure drive roller 2 is connected to the servo motor through a reducer. The servo motor is installed on the bracket. The servo motor drives the downward pressure drive roller 2 to rotate relative to the bracket. The bracket is connected to the first lifting mechanism. The first lifting mechanism can be a linear electric cylinder. The first lifting mechanism is installed at the first frame to drive the up and down displacement of the downward pressure drive roller, which can accurately control the displacement accuracy and the nominal downward pressure force is 50KN.

[0059] It is easy to understand that the two follower support rollers 3 rotate counterclockwise and the downward driving roller 2 rotates clockwise to drive the linear guide 1 to move. The movement speed of the linear guide can be adjusted by the servo motor.

[0060] Specifically, the diameter of the follower support roller 3 may be 105 mm, and the diameter of the downward driving roller 2 may be 70 mm.

[0061] In addition, an input roller is provided on the input side of the first frame to deliver the linear guide rail into the rolling device, and a laser camera is provided at the output roller. The straightness of the linear guide rail is detected by the CCD (charge coupled device) laser camera, and the detection data is sent to the corresponding controller (computing terminal). The controller obtains the straightening result based on the above content, and the controller adjusts the height of the downward driving roller in the rolling device according to the corresponding straightening result.

[0062] In the second step, the end of the linear guide rail is straightened by twisting. The bending of the end of the linear guide rail is caused by the blind area of ​​the minimum wheelbase straightening in the previous process of rolling and the eccentricity of the drawing process head (in the linear guide rail forming process), and the range is within 300 mm from the end head.

[0063] The first straightening device is in the form of automatic point calibration. The first straightening device includes a second frame. The second frame includes an upper pressure head 4 and two lower pressure heads 5. The support position of the first straightening device is controlled according to the bending condition. The upper pressure head 4 is lifted and lowered by a first drive motor. The first drive motor is connected to the second drive motor. The second drive motor is installed on the second frame. The second drive motor drives the upper pressure head to move left and right (along the length direction of the linear guide). There are two lower pressure heads 5. The outer lower pressure head 5 is fixed on the second frame. The inner lower pressure head 5 is connected to the third drive motor. The third drive motor is installed on the second frame. The third drive motor can adjust the position of the inner lower pressure head so that the inner lower pressure head can move along the length direction of the linear guide. The position of the inner lower pressure head 5 is controlled according to the bending condition.

[0064] Among them, the first drive motor, the second drive motor and the third drive motor are all linear electric cylinders.

[0065] A conveyor roller is also provided at the output end of the second frame. The conveyor roller is also provided with a CCD laser camera. After the kinks in the linear guide rail are straightened, the CCD laser camera is used to obtain relevant data and send it to the controller. The controller obtains the detection results and adjusts the positions of the inner upper pressure head 4 and the lower pressure head 5 through the first drive motor and the third drive motor according to the detection results.

[0066] The third step is to correct the distortion of the linear guide rail:

[0067] A twist correction device is used to correct the distortion of the linear guide 1. The twist correction device includes two sets of jaws 6. The interval between the two sets of jaws 6 can be 300MM. The jaws have an opening, and the linear guide 1 can enter the opening of the jaws. The center axis of the jaws 6 and the center axis of the linear guide are located on the same straight line. The jaws 6 are connected to a rotating component such as a rotating motor, and the rotating component is supported by a third frame to drive the jaws to rotate. The rotation directions of the two sets of jaws 6 are opposite, and the rotation angle range is ±5° to ensure the distortion correction effect of the linear guide. The jaws are existing force-enhancing locking jaws (such as a chain clamping mechanism) to eliminate gaps and prevent damage to the linear guide during twisting.

[0068] A conveyor roller is also provided at the output end of the torque correction device. A CCD laser camera is provided on one side of the conveyor roller. The CCD laser camera is connected to the controller. After the torque of the linear guide rail is corrected, the linear guide rail is detected by the CCD laser camera, and the detection data is sent to the controller. After the controller obtains the detection result according to the above method, it adjusts the rotation angle of the rotating mechanism according to the detection result.

[0069] The fourth step is to straighten the bending point of the linear guide:

[0070] A second straightening device is used to straighten the linear guide 1. The second straightening device includes two support blocks 8. The support blocks 8 are connected to a fourth drive motor. The fourth drive motor can be a linear electric cylinder to drive the support blocks to realize linear motion, that is, motion along the length direction of the linear guide. The position of the support blocks 8 can be adjusted according to the position of the point to be straightened. A power pressure head 7 is arranged above the two support blocks 8. The linear guide 1 is placed on the upper side of the support blocks 8 and on the lower side of the power pressure head 7. The power pressure head 7 is connected to the second lifting mechanism. The second lifting mechanism can be a linear electric cylinder. The lifting and lowering of the power pressure head 7 is controlled by the second lifting mechanism. The second lifting mechanism is fixed to the fourth frame. The second lifting mechanism can be a hydraulic cylinder. The maximum nominal force of the hydraulic cylinder is 600KN. The motor drives the servo pump to drive the hydraulic cylinder, which has high sensitivity and high straightening accuracy.

[0071] A conveyor roller is set at the output end of the second straightening device, and a CCD laser camera is set at the conveyor roller. The fifth conveyor roller conveyor linear guide is placed at the laser camera. The laser camera sends the detection data to the controller. The controller obtains the detection result based on the above content and sends the detection result to the second lifting mechanism to control the stroke of the power pressure head.

[0072] The production line provided by this embodiment is provided with a rolling device, a first straightening device, a twisting device and a second straightening device arranged in sequence. The rolling device is structurally reasonably arranged to eliminate large bending of the linear guide rail. The first straightening device is structurally reasonably arranged, and the lower pressure head on the inside is movable and can be adjusted within a set range along the end of the straight line. The twisting device realizes the twisting correction of the linear guide rail through two sets of jaws. The second straightening mechanism straightens the small bending points of the linear guide rail through the power pressure head. The support block can move along the length direction of the linear guide rail to meet the straightening of small bending points at different positions of the linear guide rail. After a set of production lines are straightened in this way, the straightening accuracy of the linear guide rail is guaranteed, and no manual straightening is required after each process is completed. The laser camera performs the straightening operation.

[0073] Example 2

[0074] This embodiment provides a linear guide rail straightening and twisting production line as described in the first embodiment, including the following contents:

[0075] The roller pressing device is used to straighten the larger bends of the linear guide. After completion, the linear guide enters the output roller at the output end of the roller pressing device. The corresponding laser camera straightens the linear guide, and the corresponding controller adjusts the stroke of the roller pressing device according to the straightening results.

[0076] The linear guide rail enters the first straightening device, which straightens the kinks at the end of the linear guide rail. After completion, the linear guide rail enters the output roller at the output end of the first straightening device, where the corresponding laser camera straightens the linear guide rail. The corresponding controller adjusts the stroke of the first straightening device according to the straightening result.

[0077] The linear guide rail enters the twisting correction device, which corrects the distortion of the linear guide rail. After the correction is completed, the linear guide rail enters the output roller at the output end of the twisting correction device, where the corresponding laser camera straightens the linear guide rail. The corresponding controller adjusts the twisting correction device according to the straightening result.

[0078] The linear guide rail enters the second straightening device, which straightens the bending point of the linear guide rail. The linear guide rail enters the output roller at the output end of the second straightening device, and is straightened by the corresponding laser camera. The corresponding controller adjusts the stroke of the second straightening device according to the straightening result.

[0079] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A linear guide rail straightening and twisting production line, characterized in that: It includes a rolling device, a first straightening device, a twisting device and a second straightening device arranged in sequence. The rolling device is used to roll-straighten the linear guide rail to eliminate the larger bending of the linear guide rail. The first straightening device is used to straighten the end of the linear guide rail. The twisting device is used to correct the distortion of the linear guide rail. The second straightening device straightens the smaller bending points of the linear guide rail. The output ends of the rolling device, the first straightening device, the twisting device and the second straightening device are all provided with output rollers to realize the transportation of the linear guide rail.

2. A linear guide rail straightening and twisting production line according to claim 1, characterized in that: Each output roller is provided with a flip mechanism, which includes a flip power source. The output end of the flip power source is connected to a shift block, which can be placed between two adjacent rollers of the output roller and can contact the linear guide rail.

3. A linear guide rail straightening and twisting production line according to claim 2, characterized in that: Each of the output rollers is provided with a laser camera, which is connected to a controller, and each controller is respectively connected to a corresponding rolling device, a first straightening device, a twisting device and a second straightening device.

4. A linear guide rail straightening and twisting production line according to claim 3, characterized in that: The controller aligns the linear guide rail according to the following: The laser camera acquires the data of the measuring points and the alignment reference points on the linear guide rail; The controller calculates the eccentricity data by the difference between the measuring point and the line connecting the two straightening reference points, and calculates the bending amount based on the eccentricity data; The flip mechanism is actuated to flip the linear guide rail so that the high point of the linear guide rail to be aligned faces upwards; The controller calculates the optimal straightening amount according to the bending amount of the linear guide rail, and controls the corresponding mechanism to perform straightening according to the optimal straightening amount.

5. A linear guide rail straightening and twisting production line according to claim 4, characterized in that: The alignment reference point is a point at the end of the linear guide rail.

6. A linear guide rail straightening and twisting production line according to claim 1 or 2, characterized in that: The rolling device includes two follower support rollers, which are set at a distance between the two follower support rollers. The two follower support rollers are supported by the first frame. The follower support rollers can rotate relative to the first frame. A downward pressure driving roller is set above the two follower support rollers. The downward pressure driving roller can rotate and rise and fall relative to the first frame.

7. A linear guide rail straightening and twisting production line according to claim 1 or 2, characterized in that: The first straightening device is placed at both ends of the linear guide rail. The first straightening device includes a second frame. The second frame includes an upper pressure head and two lower pressure heads. The upper pressure head can be raised and lowered relative to the second frame and can be moved along the length direction of the linear guide rail. The outer lower pressure head is fixed to the second frame, and the inner lower pressure head can be connected along the length direction of the linear guide rail.

8. A linear guide rail straightening and twisting production line according to claim 1 or 2, characterized in that: The twisting device includes two sets of jaws, which are set at a distance from each other. The jaws are installed on the third frame through a rotating component. The rotation directions of the two sets of jaws are opposite, and the jaws are force-enhancing locking jaws.

9. A linear guide rail straightening and twisting production line according to claim 1 or 2, characterized in that: The second straightening mechanism includes two support blocks, which are installed on the fourth frame and can move along the length direction of the linear guide rail. A power pressure head is set above the two support blocks and can be raised and lowered relative to the fourth frame.

10. A linear guide rail straightening and twisting process, characterized in that: A linear guide rail straightening and twisting production line according to claim 3 includes the following contents: The roller pressing device is used to straighten the larger bends of the linear guide. After completion, the linear guide enters the output roller at the output end of the roller pressing device. The corresponding laser camera straightens the linear guide, and the corresponding controller adjusts the stroke of the roller pressing device according to the straightening results. The linear guide rail enters the first straightening device, which straightens the kinks at the end of the linear guide rail. After completion, the linear guide rail enters the output roller at the output end of the first straightening device, where the corresponding laser camera straightens the linear guide rail. The corresponding controller adjusts the stroke of the first straightening device according to the straightening result. The linear guide rail enters the twisting correction device, which corrects the distortion of the linear guide rail. After the correction is completed, the linear guide rail enters the output roller at the output end of the twisting correction device, where the corresponding laser camera straightens the linear guide rail. The corresponding controller adjusts the twisting correction device according to the straightening result. The linear guide rail enters the second straightening device, which straightens the bending point of the linear guide rail. The linear guide rail enters the output roller at the output end of the second straightening device, and is straightened by the corresponding laser camera. The corresponding controller adjusts the stroke of the second straightening device according to the straightening result.

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