Square linear guide rail automatic straightening device and straightening method thereof

Abstract

The application relates to a square linear guide rail automatic straightening device and a straightening method thereof, which comprises a base, a dragging and overturning module arranged on the base and used for driving the guide rail to move, a detection module arranged on the base and facing the guide rail, a pressure applying module located at the right side of the detection module, and an electric control module electrically connected with the pressure applying module, the dragging and overturning module and the detection module respectively, the pressure applying module comprises a fixed end anvil support assembly and a movable end anvil support assembly, wherein the fixed end anvil support assembly is provided with a fixed end mounting seat and a pair of first anvil support point blocks which are relatively moved along the length direction of the guide rail through a first left-right rotating screw rod and nut mechanism; the movable end anvil support assembly is provided with a movable end mounting seat and a pair of second anvil support point blocks which are transversely moved through a pressure servo electric cylinder; a variable support point number straightening method is adopted; the support point number and position are dynamically adjusted according to the specific bending condition of the guide rail, such as long wave or short wave bending; and the straightening efficiency and precision are effectively improved.

Description

Technical Field

[0001] This invention relates to machining equipment technology, and more particularly to an automatic straightening device for square linear guide rails and its straightening method. Background Technology

[0002] Linear guides are core components of precision equipment, and their straightness directly affects the equipment's operational accuracy and lifespan. However, guides are prone to bending deformation during production and heat treatment, requiring straightening processes for correction. Currently, automated straightening equipment still has significant shortcomings in terms of detection accuracy, straightening efficiency, and multi-directional adaptability.

[0003] Existing straightening devices generally adopt a three-point vertical reverse bending straightening method, with a fixed number of two anvil support blocks and only one pressure head. This has the following problems: 1. The number of anvil support blocks and the straightening direction cannot be dynamically adjusted, and the straightening accuracy is greatly affected by the gravity of the guide rail itself; 2. The efficiency is low when straightening long-wave bends, and the guide rail needs to be manually rotated 180° when the bending direction changes, resulting in high labor intensity; 3. It cannot adapt to the needs of step-by-step straightening of horizontal and lateral surfaces, resulting in limited straightening effect in multiple directions. The existing Chinese patent, publication number: (CN 117380787A), discloses an automatic straightening device for bending linear guide rails. Although it includes a circulating conveyor, an online detection device, and a transition flipping device, it still has the following defects: its reverse bending straightening method adopts the straightening device of patent, publication number: (CN114130861A), which fixes the spacing of the support blocks through a span adjustment device. The number of fulcrums is fixed at two points, which cannot dynamically adjust the number and position of fulcrums according to the long / short wave bending shape, resulting in insufficient straightening accuracy. Moreover, the flipping mechanism is complex: it uses an L-shaped support plate, a gripper cylinder, and a gear combination to achieve guide rail flipping, which requires the coordinated action of multiple parts. The mechanical structure is redundant and the maintenance cost is high. The flipping angle is fixed at 180°, which cannot achieve 90° step-by-step straightening. Summary of the Invention

[0004] The present invention aims to solve the problems existing in the prior art by providing an automatic straightening device and method for square linear guide rails that achieves precise straightening of guide rails, reduces manual intervention, and improves work efficiency and product quality.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: This automatic straightening device for square linear guide rails includes a base, a drag-and-flip module slidably disposed on the base for driving the guide rail to move, a detection module disposed on the base facing the guide rail, a pressure module located to the right of the detection module, and an electrical control module electrically connected to the pressure module, the drag-and-flip module, and the detection module respectively. The pressure module includes a fixed-end anvil support assembly and a movable-end anvil support assembly, wherein: the fixed-end anvil support assembly has a fixed-end mounting seat and a pair of first anvil support blocks that move relative to each other along the length direction of the guide rail via a first left-right turning screw and nut mechanism; the movable-end anvil support assembly has a movable-end mounting seat and a pair of second anvil support blocks that move laterally via a pressure servo cylinder, and the second anvil support blocks are capable of moving relative to each other along the length direction of the guide rail;

[0006] The guide rail to be straightened has a long-wave bending shape and a short-wave bending shape. When straightening the long-wave bending, the first anvil support block and the second anvil support block move away from each other to form a four-point support. When straightening the short-wave bending, the second anvil support block moves closer to each other along the length of the guide rail to form a three-point support.

[0007] Preferably, the drag-and-flip module includes at least two drag components that move independently along the length of the base. Each drag component includes a base plate and a support seat disposed on the base plate. The support seat is provided with a clamping block. The support seat cooperates with the clamping block to fix the guide rail to be straightened. The base plate is provided with an incomplete gear driven by a flipping cylinder. The incomplete gear has two limiting planes. The incomplete gear can move to below the guide rail. The two limiting planes are respectively attached to the lower end and side of the guide rail. When the incomplete gear rotates, the guide rail is pushed to flip 90° through the contact between the limiting planes and the guide rail.

[0008] Preferably, the first left-right turning screw and nut mechanism is installed on the fixed end servo motor at the front end of the fixed end mounting base, the first slide rail arranged on the inner side of the fixed end mounting base along the length direction of the base, the first slider installed at the bottom of the first anvil fulcrum block and slidably connected to the first slide rail, the first screw connected to the fixed end servo motor, and the first nut arranged at the bottom of the first slider and threadedly connected to the first screw.

[0009] The mobile end anvil support assembly has a second left-right turning screw and nut mechanism. A pair of second anvil support blocks move relative to each other on the mobile end mounting base along the length of the guide rail through the second left-right turning screw and nut mechanism. The second left-right turning screw and nut mechanism includes a mobile end servo motor installed at the front end of the mobile end mounting base, a second slide rail disposed on the inner side of the mobile end mounting base, a second slider installed at the bottom of the second anvil support block and slidably connected to the second slide rail, a second screw connected to the mobile end servo motor, and a second nut disposed at the bottom of the second slider and threadedly connected to the second screw.

[0010] In this pair of first nuts, the thread directions are opposite, and in the pair of second nuts, the thread directions are opposite. When the fixed end servo motor drives the first lead screw to rotate, the first nut drives the first anvil fulcrum block to move relative to each other along the length of the guide rail. When the moving end servo motor drives the second lead screw to rotate, the second nut drives the second anvil fulcrum block to move relative to each other along the length of the guide rail.

[0011] Preferably, the movable end anvil support assembly further includes a fixed frame mounted on the base, the pressure-applying servo cylinder is mounted on the outer surface of the fixed frame, and the output end of the pressure-applying servo cylinder is connected to a push rod. The push rod is connected to the outer surface of the movable end mounting base to transmit the lateral straightening load.

[0012] A force sensor is installed between the push rod and the mobile end mounting base. The force sensor is used to monitor the straightening load in real time and feed it back to the electronic control module to achieve closed-loop control.

[0013] Preferably, the fixing frame has guide holes on its left and right sides, and a guide rod is inserted into the guide holes. The front end of the guide rod is fixedly connected to the outer side of the movable end mounting base, and the rear end of the guide rod is slidably engaged with the fixing frame.

[0014] The fixed frame is provided with a high-precision linear grating ruler along the lateral direction of the base. The reading head of the high-precision linear grating ruler is connected to the second anvil support block and is used to monitor the lateral displacement of the second anvil support block in real time and feed it back to the electronic control module.

[0015] Preferably, the top of the support base is provided with a limiting end face for placing the guide rail and a limiting block that abuts against one side of the guide rail. The top of the support base is provided with an assembly groove. A clamping cylinder is installed on the support base. The driving end of the clamping cylinder extends into the assembly groove and is connected to the clamping block. The top of the clamping block extends out of the assembly groove and is located above the limiting end face. The clamping block, the limiting end face, and the limiting block together form a limiting groove. The driving end of the clamping cylinder drives the clamping block to move towards the limiting block, clamping and fixing the guide rail in the limiting groove.

[0016] Preferably, the bottom of the base plate is provided with a linear motion servo motor and a first drag slider, and a first rack and a first drag rail that slides with the first drag slider are fixedly installed on the base along its length direction; a gear is installed on the drive end of the linear motion servo motor, and the gear meshes with the first rack.

[0017] Preferably, a transverse movement servo motor, a synchronous belt mechanism, and a second and a third drag rail arranged along the transverse direction of the base are provided above the base plate. A second drag slider is installed at the bottom of the support base and is connected to the second drag rail. The output end of the transverse movement servo motor is connected to a transverse lead screw through the synchronous belt mechanism. A transverse nut is threaded onto the transverse lead screw. A third drag slider is installed at the bottom of the transverse nut and is connected to the third drag rail. A mounting bracket is provided at the top of the transverse nut. A connecting cylinder is provided on the mounting bracket along the length of the base. A limit hole is provided on the base plate. The drive end of the connecting cylinder is movably inserted into the limit hole to lock the transverse position of the support base.

[0018] Preferably, the base plate is provided with a lifting cylinder, the output end of the lifting cylinder is equipped with a limiting component, the incomplete gear is provided with a track groove, the top of the limiting component is provided with a slot, a connecting shaft is provided in the slot, the incomplete gear extends into the slot and the connecting shaft is connected to the track groove, the drive end of the tilting cylinder is connected with a second rack, the second rack is slidably disposed in the limiting component and meshes with the incomplete gear.

[0019] Preferably, the detection module includes a base, a forward and backward servo motor mounted on the base, a linear motion module connected to the drive end of the forward and backward servo motor, and three high-precision displacement sensors arranged in parallel on the linear motion module. The base is fixed to the base, and the forward and backward servo motor drives the three high-precision displacement sensors arranged in parallel to move along the lateral direction of the base through the linear motion module. A detachable adjustment block is provided between the base and the forward and backward servo motor, and the adjustment block is used to adjust the installation height of the forward and backward servo motor.

[0020] A straightening method for an automatic straightening device for square linear guides includes the following steps:

[0021] S1. Place the guide rail to be straightened on the support base of the drag-and-flip module, and fix the guide rail in the limiting groove by driving the clamping block through the clamping cylinder.

[0022] S2. The linear motion servo motor of the flip module is dragged to drive the guide rail to move along the length of the base.

[0023] S3. The three high-precision displacement sensors of the detection module collect the bending shape error of the horizontal plane of the guide rail and feed the data back to the electronic control module.

[0024] S4. The electronic control module controls the pressure application module to switch between four-point or three-point straightening modes based on the bending curve information.

[0025] S5. The pressure application module applies a reverse bending straightening load through a pressure application servo electric cylinder to complete the horizontal plane straightening.

[0026] S6. Drive the guide rail to the re-inspection position and re-inspect the horizontal plane bending error. If the re-inspection is qualified, proceed to the next step. If it is not qualified, return to S4.

[0027] S7. By lifting the cylinder to drive the limiting component to rise, the limiting plane of the incomplete gear is brought into contact with the lower end of the guide rail. The flipping cylinder drives the second rack to rotate the incomplete gear and push the guide rail to complete a 90° flip.

[0028] S8. Drag the flip module to drive the guide rail to move again along the length of the base;

[0029] S9. The detection module collects the bending shape error of the side of the guide rail, generates the side bending curve, and feeds it back to the electronic control module.

[0030] S10: The electronic control module controls the pressure application module to switch the straightening mode and apply the reverse bending load according to the side bending curve.

[0031] S11. Real-time monitoring of straightening force and displacement to complete lateral straightening;

[0032] S12. Drive the guide rail to the re-inspection position and re-inspect the side bending error. If the re-inspection is qualified, proceed to the next step. If it is not qualified, return to S10.

[0033] S13. Loosen the clamping block, remove the straightened guide rail, and replace it with the next guide rail to be straightened.

[0034] The present invention has the following beneficial effects:

[0035] 1. A variable fulcrum straightening method is adopted, which dynamically adjusts the number and position of fulcrums according to the specific curvature of the guide rail, such as long-wave or short-wave curvature. When straightening long-wave curvature, the first anvil fulcrum block and the second anvil fulcrum block move away from each other to form a four-fulcrum support; while when straightening short-wave curvature, the second anvil fulcrum block moves closer to each other along the length of the guide rail to form a three-fulcrum support, which effectively improves the straightening efficiency and accuracy.

[0036] 2. By dragging the flipping module, the guide rail is accurately straightened in two mutually perpendicular directions, the horizontal plane and the side. When step-by-step straightening is required in different directions, the design of lifting cylinder and incomplete gear can easily achieve 90-degree flipping, realizing closed-loop straightening in both the horizontal plane and the side, reducing the maintenance cost of the device and improving the adaptability to flipping of guide rails of different sizes.

[0037] 3. By employing three parallel high-precision displacement sensors and error separation technology, the bending shape error of the guide rail can be accurately detected, filtering out the travel error of the moving platform, and ultimately obtaining accurate guide rail bending curve information. This design significantly improves detection accuracy and ensures the accuracy of the basic data for subsequent straightening operations.

[0038] 4. The entire straightening process is automated by using an automated drag-and-flip module, detection module, and pressure application module, combined with an electronic control module. A reverse bending straightening springback prediction model is established through intelligent algorithms such as neural networks to calculate straightening parameters in real time, making the straightening process more intelligent, reducing manual intervention, and improving work efficiency. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of an automatic straightening device for a square linear guide rail according to the present invention;

[0040] Figure 2 This is a schematic diagram of the structure of this drag-and-drop component;

[0041] Figure 3 for Figure 1 A schematic diagram of the structure shown in section A;

[0042] Figure 4 A schematic diagram of an incomplete gear in a drag component;

[0043] Figure 5 A schematic diagram showing the guide rail rotating 90°;

[0044] Figure 6 This is a schematic diagram of the guide rail under long-wave bending and short-wave bending conditions.

[0045] Figure 7 This is a schematic diagram of the pressure application module;

[0046] Figure 8 For this Figure 1 A schematic diagram of the structure of section B;

[0047] Figure 9 This is a schematic diagram of the detection module.

[0048] Figure 10 This is a schematic diagram of error separation technology;

[0049] Figure 11 This is a flowchart of a straightening method for an automatic straightening device for square linear guides according to the present invention.

[0050] Explanation of reference numerals in the attached figures:

[0051] 1. Base;

[0052] 2. Drag and flip module; 20. Drag component; 200. Base plate; 201. Support base; 202. Clamping block; 203. Incomplete gear; 204. Limiting plane; 205. Limiting end face; 206. Limiting block; 207. Assembly slot; 208. Clamping cylinder; 209. Limiting groove; 210. Linear motion servo motor; 211. First drag slider; 212. First rack; 213. First drag slide rail; 214. Gear; 215. Lateral movement 216. Servo motor; 217. Second drag slide rail; 218. Third drag slide rail; 219. Second drag slider; 220. Transverse lead screw; 221. Transverse nut; 222. Third drag slider; 222. Mounting bracket; 223. Connecting cylinder; 224. Limiting hole; 225. Lifting cylinder; 226. Limiting component; 227. Track groove; 228. Groove; 229. Connecting shaft; 230. Second rack; 231. Tilting cylinder; 232. Synchronous belt mechanism;

[0053] 3. Detection module; 300. Base; 301. Forward and backward servo motor; 302. Linear movement module; 303. High-precision displacement sensor; 304. Adjustment block;

[0054] 4. Pressure application module; 40. Fixed-end anvil support assembly; 41. Moving-end anvil support assembly; 42. First left-right turning lead screw and nut mechanism; 43. Pressure application servo cylinder; 44. Second left-right turning lead screw and nut mechanism; 400. Fixed-end mounting base; 401. First anvil fulcrum block; 402. Moving-end mounting base; 403. Second anvil fulcrum block; 404. Fixed-end servo motor; 405. First slide rail; 406. First slider; 407. First lead screw; 408. First nut; 409. Moving-end servo motor; 410. Second slide rail; 411. Second slider; 412. Second lead screw; 413. Second nut; 414. Fixing frame; 415. Push rod; 416. Force sensor; 417. Guide hole; 418. Guide rod; 419. High-precision linear grating ruler;

[0055] 5. Electrical control module;

[0056] 6. Guide rail to be straightened. Detailed Implementation

[0057] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0058] like Figures 1 to 10As shown, an automatic straightening device for a square linear guide rail includes a base 1, a dragging and flipping module 2 slidably mounted on the base 1 for moving the guide rail, a detection module 3 mounted on the base 1 facing the guide rail, a pressure application module 4 located to the right of the detection module 3, and an electrical control module 5 electrically connected to the pressure application module 4, the dragging and flipping module 2, and the detection module 3 respectively. The pressure application module 4 includes a fixed-end anvil support assembly 40 and a moving-end anvil support assembly 41, wherein: the fixed-end anvil support assembly 40 has a fixed-end mounting seat 400 and a pair of first anvil support blocks 401 that move relative to each other along the length of the guide rail via a first left-right turning screw and nut mechanism 42; the moving-end anvil support assembly 41 has a moving-end mounting seat 402 and a pair of second anvil support blocks 403 that move laterally via a pressure application servo cylinder 43, and the second anvil support blocks 403 can move relative to each other along the length of the guide rail; as well as... Figure 6 The guide rail to be straightened has a long-wave bending shape and a short-wave bending shape. When straightening the long-wave bending, the first anvil support block 401 and the second anvil support block 403 move away from each other to form a four-point support. When straightening the short-wave bending, the second anvil support block 403 moves closer to each other along the length of the guide rail to form a three-point support.

[0059] The straightening device includes a base 1, a drag-and-flip module 2 slidably mounted on the base 1 for moving the guide rail, a detection module 3 mounted on the base 1 facing the guide rail, a pressure application module 4 located to the right of the detection module 3, and an electrical control module 5 electrically connected to the pressure application module 4, the drag-and-flip module 2, and the detection module 3 respectively. In this embodiment, the detection module 3 is a detection table mounted on the side of the base 1. The pressure application module 4 includes a fixed-end anvil support assembly 40 and a movable-end anvil support assembly 41. The fixed-end anvil support assembly 40 has a pair of first anvil support blocks 401 that move relative to each other through a first left-right turning screw and nut mechanism 42. The mobile anvil support assembly 41 has a pair of second anvil support blocks 403 that move laterally via a pressure servo cylinder 43. This straightening device is a variable support point straightening method. When straightening a long-wave bend, the first anvil support block 401 and the second anvil support block 403 move away from each other to form a four-point support. When straightening a short-wave bend, the second anvil support blocks 403 move closer to each other along the length of the guide rail to form a three-point support. The entire straightening process is monitored and fed back in real time by the electronic control module 5, which ensures precise control of the straightening load and displacement, significantly improves the straightening accuracy and work efficiency, reduces manual intervention, and improves the reliability of the product.

[0060] Preferably, such as Figures 1 to 5As shown, the drag-and-flip module 2 includes at least two drag components 20 that move independently along the length of the base 1. Each drag component 20 includes a base plate 200 and a support seat 201 disposed on the base plate 200. A clamping block 202 is disposed on the support seat 201. The support seat 201 cooperates with the clamping block 202 to fix the guide rail 6 to be straightened. An incomplete gear 203 driven by a flipping cylinder 231 is disposed on the base plate 200. The incomplete gear 203 has two limiting planes 204. The incomplete gear 203 can move to the bottom of the guide rail. The two limiting planes 204 are respectively attached to the lower end and the side of the guide rail. When the incomplete gear 203 rotates, it pushes the guide rail to flip 90° through the contact between the limiting planes 204 and the guide rail.

[0061] The drag-and-flip module 2 includes at least two drag components 20 that move independently along the length of the base 1. Each drag component 20 consists of a base plate 200 and a support base 201. The support base 201 is provided with a clamping block 202, which can firmly fix the guide rail 6 to be straightened. The flipping cylinder 231 on the base plate 200 drives the incomplete gear 203, which has two limiting planes 204. When the incomplete gear 203 moves to the bottom of the guide rail and rotates, the limiting planes 204 abut against the lower end and side of the guide rail, pushing the guide rail to complete a 90-degree flip, thereby realizing straightening operations in different directions. A 180-degree flip can be achieved through step-by-step straightening.

[0062] It is worth mentioning that this straightening device can handle different types and degrees of guide rail bending shape errors, and has a high degree of flexibility and adaptability.

[0063] Specifically, such as Figure 1 , Figure 6 , Figure 7 and Figure 8As shown, the first left-right turning screw and nut mechanism 42 is mounted on the fixed end servo motor 404 at the front end of the fixed end mounting base 400, the first slide rail 405 is disposed on the inner side of the fixed end mounting base 400 along the length direction of the base 1, the first slider 406 is mounted on the bottom of the first anvil support block 401 and slidably connected to the first slide rail 405, the first screw 407 is connected to the fixed end servo motor 404, and the first nut 408 is disposed on the bottom of the first slider 406 and threadedly connected to the first screw 407; the moving end anvil support assembly 41 has a second left-right turning screw and nut mechanism 44, and a pair of second anvil support blocks 403 move relative to each other on the moving end mounting base 402 along the length direction of the guide rail through the second left-right turning screw and nut mechanism 44. The second left-right turning screw and nut mechanism 44 includes a sliding end servo motor 404 mounted on the front end of the moving end mounting base 402, the second left-right turning screw and nut mechanism 44 includes a sliding end servo motor 404 at the front end of the fixed end mounting base 400, the first slide rail 405 is disposed on the inner side of the fixed end mounting base 400 along the length direction of the guide rail, the first slider 406 is mounted on the bottom of the first anvil support block 401 and slidably connected to the first slide rail 405, the first screw 407 is connected to the fixed end servo motor 404, and the first nut 408 is disposed on the bottom of the first slider 406 and threadedly connected to the first screw 407; the moving end anvil support assembly 41 has a second left-right turning screw and nut mechanism 44, and a pair of second anvil support blocks 403 move relative The system includes a moving end servo motor 409, a second slide rail 410 disposed on the inner side of the moving end mounting base 402, a second slider 411 mounted on the bottom of the second anvil fulcrum block 403 and slidably connected to the second slide rail 410, a second lead screw 412 connected to the moving end servo motor 409, and a second nut 413 disposed on the bottom of the second slider 411 and threadedly connected to the second lead screw 412; wherein, the threads of a pair of first nuts 408 are opposite, and the threads of a pair of second nuts 413 are opposite. When the fixed end servo motor 404 drives the first lead screw 407 to rotate, the first nuts 408 drive the first anvil fulcrum block 401 to move relative to each other along the length of the guide rail. When the moving end servo motor 409 drives the second lead screw 412 to rotate, the second nuts 413 drive the second anvil fulcrum block 403 to move relative to each other along the length of the guide rail.

[0064] The first left-right turning screw and nut mechanism 42 is mounted on a fixed end servo motor 404 at the front end of the fixed end mounting base 400, a first slide rail 405 disposed on the inner side of the fixed end mounting base 400 along the length direction of the base 1, a first slider 406 mounted on the bottom of the first anvil support block 401 and slidably connected to the first slide rail 405, a first screw 407 connected to the fixed end servo motor 404, and a first nut 408 disposed on the bottom of the first slider 406 and threadedly connected to the first screw 407; while the movable end anvil support assembly 41 includes a screw mounted on the movable end anvil support block 401. In this embodiment, the moving end servo motor 409 at the front end of the moving end mounting base 402, the second slide rail 410 disposed on the inner side of the moving end mounting base 402, the second slider 411 mounted on the bottom of the second anvil fulcrum block 403 and slidably connected to the second slide rail 410, the second lead screw 412 connected to the moving end servo motor 409, and the second nut 413 disposed on the bottom of the second slider 411 and threadedly connected to the second lead screw 412 are provided. In this embodiment, the thread directions of a pair of first nuts 408 are opposite, and the thread directions of a pair of second nuts 413 are also opposite. When the fixed-end servo motor 404 drives the first lead screw 407 to rotate, the first nut 408 drives the first anvil fulcrum block 401 to move relative to each other along the length of the guide rail. Similarly, when the moving-end servo motor 409 drives the second lead screw 412 to rotate, the second nut 413 drives the second anvil fulcrum block 403 to move relative to each other along the length of the guide rail. The first left-right turn lead screw and nut mechanism 42 achieves precise position adjustment, allowing the first anvil fulcrum block 401 and the second anvil fulcrum block 403 to move flexibly according to actual needs, thereby adapting to different types of bending shape errors and realizing the variable fulcrum straightening method. This ensures high precision and stability during the straightening process and significantly improves straightening efficiency and product quality consistency.

[0065] Furthermore, such as Figure 1 , Figure 6 , Figure 7 and Figure 8 As shown, the mobile end anvil support assembly 41 also includes a fixed frame 414 mounted on the base 1. The pressure servo cylinder 43 is mounted on the outer side of the fixed frame 414. The output end of the pressure servo cylinder 43 is connected to a push rod 415. The push rod 415 is connected to the outer side of the mobile end mounting base 402 to transmit the lateral straightening load. A force sensor 416 is provided between the push rod 415 and the mobile end mounting base 402. The force sensor 416 is used to monitor the straightening load in real time and feed it back to the electronic control module 5 to realize closed-loop control.

[0066] The mobile end anvil support assembly 41 also includes a fixing frame 414 mounted on the base 1. A pressure servo cylinder 43 is mounted on the outer surface of the fixing frame 414. The main functional components of the pressure servo cylinder 43 include a servo motor, a ball screw, and a nut assembly. The servo motor is fixedly connected to one end of the ball screw via a coupling. The nut assembly is threadedly connected to the ball screw, and a push rod 415 is fixed to the nut assembly. One end of the push rod 415 is fixedly connected to the nut assembly, and the other end is connected to a force sensor 416. The push rod 415 is connected to the outer surface of the mobile end mounting base 402 to transmit the lateral straightening load. A force sensor 416 is provided between the push rod 415 and the mobile end mounting base 402. The 6 is used to monitor the straightening load in real time and feed it back to the electronic control module 5 to achieve closed-loop control. The pressure servo cylinder 43 precisely controls the movement of the push rod 415, ensuring that the lateral load applied during the straightening process can be accurately transmitted to the guide rail 6 to be straightened. The introduction of the force sensor 416 enables the system to monitor the actual load during the straightening process in real time and feed this data back to the electronic control module 5 for analysis and adjustment, thereby achieving high-precision closed-loop control. This closed-loop control system not only improves the accuracy and stability of the straightening process, but also effectively prevents overload or underload, reduces the risk of equipment damage, extends the service life of the equipment, and the real-time monitoring and feedback mechanism ensures the consistency and reliability of each straightening operation.

[0067] Furthermore, such as Figure 7 As shown, guide holes 417 are provided on the left and right sides of the fixed frame 414, and guide rods 418 are inserted into the guide holes 417. The front end of the guide rod 418 is fixedly connected to the outer side of the movable end mounting base 402, and the rear end of the guide rod 418 is slidably engaged with the fixed frame 414. A high-precision linear grating ruler 419 is provided on the fixed frame 414 along the lateral direction of the base 1. The reading head of the high-precision linear grating ruler 419 is connected to the second anvil fulcrum block 403 for real-time monitoring of the lateral displacement of the second anvil fulcrum block 403 and feedback to the electronic control module 5.

[0068] The fixed frame 414 has guide holes 417 on its left and right sides, and guide rods 418 are inserted into the guide holes 417. The front end of the guide rod 418 is fixedly connected to the outer side of the movable end mounting base 402, and the rear end is slidably engaged with the fixed frame 414 to ensure that the movable end mounting base 402 can move smoothly when a lateral straightening load is applied. A high-precision linear grating ruler 419 is provided on the fixed frame 414 along the lateral direction of the base 1. The reading head of the high-precision linear grating ruler 419 is connected to the second anvil support block 403. The guide rod 418 and guide hole 417 are used to monitor the lateral displacement of the second anvil fulcrum block 403 in real time and feed it back to the electronic control module 5. The cooperation of these components ensures the stability and accuracy of the moving end mounting base 402 during lateral movement, avoiding straightening errors caused by offset or shaking. Furthermore, the introduction of the high-precision linear grating ruler 419 enables the system to monitor the lateral displacement of the second anvil fulcrum block 403 in real time and feed this data back to the electronic control module 5 for analysis and adjustment, thereby achieving high-precision closed-loop control.

[0069] Specifically, such as Figures 1 to 5 As shown, the top of the support base 201 is provided with a limiting end face 205 for placing the guide rail and a limiting block 206 that abuts against one side of the guide rail. The top of the support base 201 is provided with an assembly groove 207. A clamping cylinder 208 is installed on the support base 201. The driving end of the clamping cylinder 208 extends into the assembly groove 207 and is connected to the clamping block 202. The top of the clamping block 202 extends out of the assembly groove 207 and is located above the limiting end face 205. The clamping block 202, the limiting end face 205, and the limiting block 206 together form a limiting groove 209. The driving end of the clamping cylinder 208 drives the clamping block 202 to move towards the limiting block 206, clamping and fixing the guide rail in the limiting groove 209.

[0070] The support base 201 has a limiting end face 205 for placing the guide rail and a limiting block 206 that abuts against one side of the guide rail, ensuring accurate positioning of the guide rail during placement. The top of the support base 201 also has an assembly groove 207. A clamping cylinder 208 is installed on the side wall of the support base 201. The driving end of the clamping cylinder 208 extends into the assembly groove 207 and is connected to the clamping block 202. The top of the clamping block 202 extends out of the assembly groove 207 and is located above the limiting end face 205. The clamping block 202, the limiting end face 205, and the limiting block 206 together form a limiting position. The groove 209, when the driving end of the clamping cylinder 208 drives the clamping block 202 to move towards the limiting block 206, can firmly clamp and fix the guide rail in the limiting groove 209. The design provides initial positioning through the limiting end face 205 and the limiting block 206, and uses the clamping cylinder 208 to drive the clamping block 202 for final fixing, ensuring that the guide rail will not shift or loosen during the straightening process, thereby ensuring the accuracy and stability of the straightening operation. The automated control of the clamping cylinder 208 makes the entire clamping process efficient and reliable, reducing manual intervention.

[0071] Furthermore, such as Figures 1 to 5 As shown, a linear motion servo motor 210 and a first drag slider 211 are provided at the bottom of the base plate 200. A first rack 212 and a first drag slide rail 213 that slides with the first drag slider 211 are fixedly installed on the base 1 along its length direction. A gear 214 is installed at the drive end of the linear motion servo motor 210, and the gear 214 meshes with the first rack 212.

[0072] The bottom of the base plate 200 is provided with a linear motion servo motor 210 and a first drag slider 211. A first rack 212 and a first drag slide rail 213 that slides with the first drag slider 211 are fixedly installed on the base 1 along its length direction. A gear 214 is installed on the drive end of the linear motion servo motor 210. The gear 214 meshes with the first rack 212. The linear motion servo motor 210 drives the gear 214 to rotate. The meshing transmission between the gear 214 and the first rack 212 enables the base plate 200 to move smoothly and accurately along the first drag slide rail 213, thereby driving the support base 201 and its guide rail to move linearly along the length direction of the base 1. The cooperation between the first drag slider 211 and the first drag slide rail 213 ensures the stability and accuracy of the base plate 200 during the movement, avoiding positioning errors caused by offset or shaking.

[0073] Furthermore, such as Figures 2 to 4 As shown, a transverse movement servo motor 215, a synchronous belt mechanism 232, and a second drag slide rail 216 and a third drag slide rail 217 arranged in the transverse direction of the base 1 are provided above the base plate 200. A second drag slider 218 is installed at the bottom of the support base 201 and is connected to the second drag slide rail 216. The output end of the transverse movement servo motor 215 is connected to a transverse lead screw 219 through the synchronous belt mechanism 232. A transverse nut 220 is threaded onto the transverse lead screw 219. A third drag slider 221 is installed at the bottom of the transverse nut 220 and is connected to the third drag slide rail 217. A mounting bracket 222 is provided at the top of the transverse nut 220. A connecting cylinder 223 is provided on the mounting bracket 222 along the length direction of the base 1. A limit hole 224 is provided on the base plate 200. The driving end of the connecting cylinder 223 is movably inserted into the limit hole 224 to lock the transverse position of the support base 201.

[0074] A transverse movement servo motor 215 and a second drag slide rail 216 and a third drag slide rail 217 arranged in the transverse direction of the base 1 are provided above the base plate 200. A second drag slider 218 is installed at the bottom of the support base 201. The second drag slider 218 is connected to the second drag slide rail 216 to ensure that the support base 201 can move smoothly in the transverse direction of the base 1. The output end of the transverse movement servo motor 215 is connected to the driving wheel of the synchronous belt mechanism 232 through the synchronous belt mechanism 232. The outer end of the transverse lead screw 219 is connected to the driven wheel of the synchronous belt mechanism 232. The driving wheel and the driven wheel are connected by a belt. A transverse nut 220 is threaded on the transverse lead screw 219. A third drag slider 221 is installed at the bottom of the transverse nut 220 and is connected to the third drag slide rail 217. When the transverse movement servo motor 215 is started, the transverse nut 220 can move precisely in the transverse direction of the base 1 when the transverse lead screw 219 rotates. The support seat 201 is precisely adjusted in the lateral direction of the base 1 by means of a mounting bracket 222 on the top of the transverse nut 220 and a connecting cylinder 223 on the upper edge of the mounting bracket 222. A limit hole 224 is provided on the base plate 200, and the driving end of the connecting cylinder 223 is movably inserted into the limit hole 224 to lock the lateral position of the support seat 201. The lateral movement servo motor 215 drives the transverse lead screw 219 to rotate, thereby driving the transverse nut 220 and the mounting bracket 222 on it to move laterally. The cooperation between the second drag slider 218 and the second drag slide rail 216, and the third drag slider 221 and the third drag slide rail 217 ensures the stability and accuracy of the support seat 201 during the lateral movement, avoiding positioning errors caused by offset or shaking. The design of the connecting cylinder 223 allows the position of the support seat 201 to be locked when needed, ensuring that the support seat 201 will not move unnecessarily during the straightening process, further enhancing the stability and reliability of the system.

[0075] It is worth mentioning that after the connecting cylinder 223 connects to the support base 201, the lateral movement servo motor 215 drives the support base 201 to move laterally through the synchronous belt mechanism 232, the lateral lead screw 219, and the lateral nut 220, so that the guide rail 6 to be straightened is close to the displacement sensor 303 of the detection module 3 when measuring the bending shape error; after the connecting cylinder releases the support base 201, the support base 201 is in a lateral free state so that no additional force is applied to the guide rail during straightening, thereby improving the straightening accuracy.

[0076] Specifically, such as Figures 2 to 4As shown, a lifting cylinder 225 is provided on the base plate 200. A limiting member 226 is installed at the output end of the lifting cylinder 225. A track groove 227 is provided on the incomplete gear 203. A slot 228 is provided at the top of the limiting member 226. A connecting shaft 229 is provided in the slot 228. The incomplete gear 203 extends into the slot 228 and the connecting shaft 229 is connected to the track groove 227. A second rack 230 is connected to the drive end of the tilting cylinder 231. The second rack 230 is slidably disposed in the limiting member 226 and meshes with the incomplete gear 203.

[0077] A lifting cylinder 225 is mounted on the base plate 200. A limiting member 226 is installed at the output end of the lifting cylinder 225. A track groove 227 is formed on the incomplete gear 203. A slot 228 is provided at the top of the limiting member 226. A connecting shaft 229 is provided in the slot 228. The incomplete gear 203 extends into the slot 228, and the connecting shaft 229 is connected to the track groove 227, so that the incomplete gear 203 can move precisely along the track groove 227. A second rack 230 is connected to the drive end of the tilting cylinder 231. The second rack 230 is slidably disposed in the limiting member 226 and meshes with the incomplete gear 203. The incomplete gear 203 is achieved by driving the tilting cylinder 231. The rotation of gear 203, controlled by lifting cylinder 225, moves the incomplete gear 203 up and down to a suitable position by controlling the lifting of limiting member 226. When the incomplete gear 203 moves below the guide rail, tilting cylinder 231 drives the second rack 230 to move along the sliding path within the limiting member 226. The second rack 230 meshes with the incomplete gear 203, pushing it to rotate. Due to the cooperation between connecting shaft 229 and track groove 227, the incomplete gear 203 can move precisely along a predetermined trajectory during rotation, ensuring that its two limiting planes 204 can accurately abut against the lower end and side of the guide rail, and pushing the guide rail to complete a 90-degree tilt. This not only achieves efficient and precise tilting of the guide rail, but also ensures the stability and reliability of the entire process, avoiding operational errors caused by offset or shaking. In addition, the automated control of lifting cylinder 225 and tilting cylinder 231 reduces manual intervention, further improving the ease of operation and work efficiency of the equipment.

[0078] It should be noted that this straightening device is equipped with three drag components. The middle drag component can eliminate the incomplete gears and other flipping structures according to the structure of the guide rail to be straightened, while retaining the clamping structures such as the support 201 and the clamping block 202.

[0079] Specifically, such as Figure 1 , Figure 9 and Figure 10As shown, the detection module 3 includes a base 300, a forward and backward servo motor 301 mounted on the base 300, a linear motion module 302 connected to the drive end of the forward and backward servo motor 301, and three high-precision displacement sensors 303 arranged in parallel on the linear motion module 302. The base 300 is fixed to the base 1. The forward and backward servo motor 301 drives the three high-precision displacement sensors 303 arranged in parallel to move along the lateral direction of the base 1 during the movement of the nut in the linear motion module 302 (the output shaft of the forward and backward servo motor 301 is connected to a high-precision ball screw with a nut on it. The linear motion module 302 has a slide rail inside, and the nut is fixed on the slider and threadedly connected to the ball screw. The slider is connected to the slide rail). A detachable adjustment block 304 is provided between the base 300 and the forward and backward servo motor 301. The adjustment block 304 is used to adjust the installation height of the forward and backward servo motor 301.

[0080] The detection module 3 includes a base 300, a forward and backward servo motor 301, and a linear motion module 302. The base 300 is fixed on the base 1. The forward and backward servo motor 301 is mounted on the base 300 and drives three parallel high-precision displacement sensors 303 to move horizontally through the linear motion module 302. A detachable adjustment block 304 is provided between the base 300 and the forward and backward servo motor 301 to adjust the vertical height of the sensors. The forward and backward servo motor 301 precisely controls the horizontal movement of the high-precision displacement sensors 303, ensuring comprehensive and detailed bending error detection along the length of the guide rail. The linear motion module 302 provides a smooth and precise movement path, enabling the sensors to maintain accuracy during the detection process. In this embodiment, the detachable adjustment block 304 allows for flexible adjustment of the sensor height according to different guide rail models and detection requirements, enhancing the adaptability of the equipment, significantly improving the accuracy and efficiency of the detection module 3, providing accurate data support for subsequent straightening operations, and further enhancing the reliability and performance of the entire straightening system.

[0081] like Figure 11 As shown, a straightening method for an automatic straightening device for square linear guides includes the following steps:

[0082] S1. Place the guide rail 6 to be straightened on the support base 201 of the drag flipping module 2, and drive the clamping block 202 through the clamping cylinder 208 to fix the guide rail in the limiting groove 209.

[0083] S2. Drive the guide rail to move along the length direction of the base 1 by dragging the linear motion servo motor 210 of the flip module 2.

[0084] S3, the three high-precision displacement sensors 303 of the detection module 3 collect the bending shape error of the horizontal plane of the guide rail, filter the walking error of the moving platform through error separation technology, generate the bending curve of the horizontal plane and feed it back to the electronic control module 5;

[0085] S4, the electronic control module 5 calculates the straightening parameters based on the bending curve information using a neural network algorithm, and controls the pressure application module 4 to switch between four-point or three-point straightening modes.

[0086] S5, the pressure module 4 applies a reverse bending straightening load through the pressure servo electric cylinder 43 to complete the horizontal plane straightening;

[0087] S6. Drive the guide rail to the re-inspection position and re-inspect the horizontal plane bending error. If the re-inspection is qualified, proceed to the next step. If it is not qualified, return to S4.

[0088] S7. By lifting cylinder 225 driving limit member 226 to rise, the limit plane 204 of incomplete gear 203 is brought into contact with the lower end of guide rail. Rotation cylinder 231 drives second rack 230 to rotate incomplete gear 203, pushing guide rail to complete 90° rotation.

[0089] S8. Drag the flip module 2 to drive the guide rail to move again along the length of the base 1;

[0090] S9. The detection module 3 collects the bending shape error of the side of the guide rail, generates the side bending curve, and feeds it back to the electronic control module 5.

[0091] S10, the electronic control module 5 controls the pressure application module 4 to switch the straightening mode and apply the reverse bending load according to the side bending curve;

[0092] S11. Real-time monitoring of straightening force and displacement to complete lateral straightening;

[0093] S12. Drive the guide rail to the re-inspection position and re-inspect the side bending error. If the re-inspection is qualified, proceed to the next step. If it is not qualified, return to S10.

[0094] S13. Loosen the clamping block 202, remove the straightened guide rail, and replace it with the next guide rail to be straightened 6.

[0095] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An automatic straightening device for a square linear guide rail, comprising a base (1), a drag-and-flip module (2) slidably disposed on the base (1) for driving the guide rail to move, a detection module (3) disposed on the base (1) facing the guide rail, a pressure application module (4) located to the right of the detection module (3), and an electronic control module (5) electrically connected to the pressure application module (4), the drag-and-flip module (2), and the detection module (3) respectively, characterized in that: The pressure application module (4) includes a fixed-end anvil support assembly (40) and a movable-end anvil support assembly (41), wherein: the fixed-end anvil support assembly (40) has a fixed-end mounting base (400) and a pair of first anvil support blocks (401) that move relative to each other along the length of the guide rail via a first left-right turning screw nut mechanism (42); the movable-end anvil support assembly (41) has a movable-end mounting base (402) and a pair of second anvil support blocks (403) that move laterally via a pressure application servo cylinder (43), the second anvil support blocks (403) being able to move relative to each other along the length of the guide rail; The guide rail to be straightened has a long-wave bending shape and a short-wave bending shape. When straightening the long-wave bending, the first anvil support block (401) and the second anvil support block (403) move away from each other to form a four-point support. When straightening the short-wave bending, the second anvil support block (403) moves closer to each other along the length of the guide rail to form a three-point support. The drag-and-flip module (2) includes at least two drag components (20) that move independently along the length of the base (1). Each drag component (20) includes a base plate (200) and a support seat (201) on the base plate (200). A clamping block (202) is provided on the support seat (201). The support seat (201) cooperates with the clamping block (202) to fix the guide rail (6) to be straightened. An incomplete gear (203) driven by a flipping cylinder (231) is provided on the base plate (200). The incomplete gear (203) has two limiting planes (204). The incomplete gear (203) can move to the bottom of the guide rail. The two limiting planes (204) are respectively attached to the lower end and side of the guide rail. When the incomplete gear (203) rotates, the guide rail is pushed to flip 90° through the contact between the limiting planes (204) and the guide rail.

2. The automatic straightening device for a square linear guide rail according to claim 1, characterized in that: The first left and right turn screw nut mechanism (42) is installed on the fixed end servo motor (404) at the front end of the fixed end mounting base (400), the first slide rail (405) is arranged on the inner side of the fixed end mounting base (400) along the length direction of the base (1), the first slider (406) is installed at the bottom of the first anvil fulcrum block (401) and is slidably connected to the first slide rail (405), the first screw (407) is connected to the fixed end servo motor (404), and the first nut (408) is arranged at the bottom of the first slider (406) and threadedly connected to the first screw (407). The mobile end anvil support assembly (41) has a second left-right turn screw nut mechanism (44). A pair of second anvil support blocks (403) move relative to each other on the mobile end mounting base (402) along the length of the guide rail through the second left-right turn screw nut mechanism (44). The second left-right turn screw nut mechanism (44) includes a mobile end servo motor (409) installed at the front end of the mobile end mounting base (402), a second slide rail (410) provided on the inner side of the mobile end mounting base (402), a second slider (411) installed at the bottom of the second anvil support block (403) and slidably connected to the second slide rail (410), a second screw (412) connected to the mobile end servo motor (409), and a second nut (413) provided at the bottom of the second slider (411) and threadedly connected to the second screw (412). Among them, the threads of the pair of first nuts (408) are opposite, and the threads of the pair of second nuts (413) are opposite. When the fixed end servo motor (404) drives the first lead screw (407) to rotate, the first nut (408) drives the first anvil fulcrum block (401) to move relative to each other along the length of the guide rail. When the moving end servo motor (409) drives the second lead screw (412) to rotate, the second nut (413) drives the second anvil fulcrum block (403) to move relative to each other along the length of the guide rail.

3. The automatic straightening device for a square linear guide rail according to claim 2, characterized in that: The mobile end anvil support assembly (41) also includes a mounting bracket (414) mounted on the base (1). The pressure servo cylinder (43) is mounted on the outer side of the mounting bracket (414). The output end of the pressure servo cylinder (43) is connected to a push rod (415). The push rod (415) is connected to the outer side of the mobile end mounting base (402) to transmit the lateral straightening load. A force sensor (416) is provided between the push rod (415) and the mobile end mounting base (402). The force sensor (416) is used to monitor the straightening load in real time and feed it back to the electronic control module (5) to realize closed-loop control.

4. The automatic straightening device for a square linear guide rail according to claim 3, characterized in that: The fixing frame (414) has guide holes (417) on its left and right sides. A guide rod (418) is inserted into the guide hole (417). The front end of the guide rod (418) is fixedly connected to the outer side of the movable end mounting base (402), and the rear end of the guide rod (418) is slidably engaged with the fixing frame (414). Among them, a high-precision linear grating ruler (419) is provided on the fixed frame (414) along the lateral direction of the base (1). The reading head of the high-precision linear grating ruler (419) is connected to the second anvil fulcrum block (403) for real-time monitoring of the lateral displacement of the second anvil fulcrum block (403) and feedback to the electronic control module (5).

5. The automatic straightening device for a square linear guide rail according to claim 1, characterized in that: The top of the support base (201) is provided with a limiting end face (205) for placing the guide rail and a limiting block (206) that abuts against one side of the guide rail. The top of the support base (201) is provided with an assembly groove (207). A clamping cylinder (208) is installed on the support base (201). The driving end of the clamping cylinder (208) extends into the assembly groove (207) and is connected to the clamping block (202). The top of the clamping block (202) extends out of the assembly groove (207) and is located above the limiting end face (205). The clamping block (202), the limiting end face (205), and the limiting block (206) together form a limiting groove (209). The driving end of the clamping cylinder (208) drives the clamping block (202) to move towards the limiting block (206) to clamp and fix the guide rail in the limiting groove (209).

6. The automatic straightening device for a square linear guide rail according to claim 1, characterized in that: The bottom of the base plate (200) is provided with a linear motion servo motor (210) and a first drag slider (211). The base (1) is fixedly installed along its length direction with a first rack (212) and a first drag slide rail (213) that slides with the first drag slider (211). The drive end of the linear motion servo motor (210) is equipped with a gear (214), which meshes with the first rack (212).

7. The automatic straightening device for a square linear guide rail according to claim 1, characterized in that: A transverse motion servo motor (215), a synchronous belt mechanism (232), and a second drag slide rail (216) and a third drag slide rail (217) arranged in the transverse direction of the base (1) are provided above the base plate (200). A second drag slider (218) is installed at the bottom of the support base (201). The second drag slider (218) is connected to the second drag slide rail (216). The output end of the transverse motion servo motor (215) is connected to a transverse lead screw (219) through the synchronous belt mechanism (232). The transverse lead screw (219) is threaded with a... A transverse nut (220) is provided with a third drag slider (221) installed at the bottom of the transverse nut (220). The third drag slider (221) is connected to the third drag rail (217). A mounting bracket (222) is provided on the top of the transverse nut (220). A connecting cylinder (223) is provided on the mounting bracket (222) along the length direction of the base (1). A limit hole (224) is provided on the base plate (200). The driving end of the connecting cylinder (223) is movably inserted into the limit hole (224) to lock the transverse position of the support base (201).

8. The automatic straightening device for a square linear guide rail according to claim 1, characterized in that: The base plate (200) is provided with a lifting cylinder (225), and a limiting member (226) is installed at the output end of the lifting cylinder (225). The incomplete gear (203) is provided with a track groove (227). The top of the limiting member (226) is provided with a slot (228). A connecting shaft (229) is provided in the slot (228). The incomplete gear (203) extends into the slot (228) and the connecting shaft (229) is connected to the track groove (227). The driving end of the flipping cylinder (231) is connected to a second rack (230). The second rack (230) is slidably disposed in the limiting member (226) and meshes with the incomplete gear (203).

9. The automatic straightening device for a square linear guide rail according to claim 1, characterized in that: The detection module (3) includes a base (300), a front-to-back servo motor (301) mounted on the base (300), a linear motion module (302) connected to the drive end of the front-to-back servo motor (301), and three high-precision displacement sensors (303) arranged in parallel on the linear motion module (302). The base (300) is fixed on the base (1). The front-to-back servo motor (301) drives the three high-precision displacement sensors (303) arranged in parallel to move along the lateral direction of the base (1) through the linear motion module (302). A detachable adjustment block (304) is provided between the base (300) and the front-to-back servo motor (301). The adjustment block (304) is used to adjust the installation height of the front-to-back servo motor (301).

10. A straightening method for an automatic straightening device for square linear guides, comprising the following steps: S1. Place the guide rail (6) to be straightened on the support base (201) of the drag flipping module (2), and drive the clamping block (202) through the clamping cylinder (208) to fix the guide rail in the limiting groove (209); S2. Drive the guide rail to move along the length direction of the base (1) by dragging the linear motion servo motor (210) of the flipping module (2); S3. The three high-precision displacement sensors (303) of the detection module (3) collect the bending shape error of the horizontal plane of the guide rail and feed the data back to the electronic control module (5). S4. The electronic control module (5) controls the pressure module (4) to switch between four-point or three-point straightening modes based on the bending curve information. S5. The pressure module (4) applies a reverse bending straightening load through the pressure servo cylinder (43) to complete the horizontal plane straightening. S6. Drive the guide rail to the re-inspection position and re-inspect the horizontal plane bending error. If the re-inspection is qualified, proceed to the next step. If it is not qualified, return to S4. S7. By lifting cylinder (225) driving limit member (226) to rise, the limit plane (204) of incomplete gear (203) is attached to the lower end of guide rail. Rotation cylinder (231) drives second rack (230) to drive incomplete gear (203) to rotate, pushing guide rail to complete 90° rotation. S8. Drag the flip module (2) to drive the guide rail to move again along the length direction of the base (1); S9. The detection module (3) collects the bending shape error of the side of the guide rail, generates the side bending curve and feeds it back to the electronic control module (5). S10, the electronic control module (5) controls the pressure module (4) to switch the straightening mode and apply the reverse bending load according to the side bending curve; S11. Real-time monitoring of straightening force and displacement to complete lateral straightening; S12. Drive the guide rail to the re-inspection position and re-inspect the side bending error. If the re-inspection is qualified, proceed to the next step. If it is not qualified, return to S10. S13. Loosen the clamping block (202), remove the straightened guide rail, and replace the next guide rail to be straightened (6).

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