Guide rail straightening device for linear motor and use method

Abstract

The guide rail straightening device comprises a lower support and an upper support, the upper support is fixed above the lower support, a clamping mechanism, a detection mechanism and a straightening mechanism are arranged at the top of the lower support, the clamping mechanism is used for clamping a guide rail, the detection mechanism is used for detecting the guide rail, and the straightening mechanism is used for straightening the guide rail. The straightening mechanism is used for straightening the guide rail, and the detection mechanism is used for detecting whether the guide rail is bent and deformed or not; the detection mechanism comprises a testing assembly and a processing assembly, the two sliding plates are located on the two sides of the containing table respectively, a positioning plate is fixed to the lower portion of the first connecting plate, a fixing plate is fixedly connected to the positioning plate, a laser tester is fixed to the fixing plate, the laser tester is electrically connected with the controller, and the processing assembly is electrically connected with the controller. The correction device is automatically controlled to synchronously correct the N surface of the guide rail and the detected side groove surface, manual judgment and correction are not needed, and the correction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of guide rail straightening, and in particular to a guide rail straightening device and a using method for a linear motor. Background Art

[0002] As a core guiding component of precision mechanical equipment, the straightness, parallelism and residual stress level of linear guide rails directly determine the motion accuracy and service life of high-end equipment such as machine tools and automation equipment. With the upgrading of the manufacturing industry towards high precision and high efficiency, more stringent requirements are put forward for the guide rail straightening process. However, there are still significant bottlenecks in the existing straightening technologies. For example: Traditional straightening methods (such as hydraulic pressure straightening and local heating straightening) need to visually judge the deformed area by operators and rely on experience to adjust the force application position and intensity. Although multi-point pressing can be achieved, the force application parameters still need to be manually set, which is prone to over-straightening or insufficient straightening due to subjective judgment errors. Especially for high-hardness materials (such as quenched steel guide rails), repeated measurement-adjustment cycles are required for correcting minor deformations, resulting in low efficiency. This phenomenon has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0003] The purpose of the present invention is to provide a guide rail straightening device and a using method for a linear motor to solve the problems raised in the above background art.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: A guide rail straightening device and a using method for a linear motor, including a lower bracket and an upper bracket. The upper bracket is fixed above the lower bracket. A clamping mechanism, a detection mechanism and a straightening mechanism are arranged at the top of the lower bracket. The clamping mechanism is used for clamping the guide rail, the straightening mechanism is used for straightening the guide rail, and the detection mechanism is used for detecting whether the guide rail is bent and deformed.

[0005] A controller is fixed at the top of the upper bracket. A mounting plate is fixed on the upper bracket, and a placement table is fixed in the middle of the mounting plate. The controller includes a position recording module and an alarm module.

[0006] The detection mechanism includes a test component and a processing component. The test component includes a gantry and a slide plate. There are two sets of slide plates, which are respectively located on both sides of the placement table. Both sides of the gantry are fixed on the slide plates. The slide plates are connected to the mounting plate through linear drive. A second cylinder is fixedly installed on the side of the gantry. The output end of the second cylinder is fixed with a first connecting plate. A positioning plate is fixed below the first connecting plate. The positioning plate is fixedly connected with a fixing plate. A laser tester is fixed on the fixing plate. The laser tester is electrically connected to the controller. The N surface of the guide rail and the detected side groove surface are corrected synchronously through the automatic control correction device, without manual judgment for correction, improving the correction efficiency.

[0007] According to the above technical solution, the processing component includes two sets of third cylinders. Each set of third cylinders is fixed on the top of the gantry. The output ends of the two sets of third cylinders are arranged in opposite directions. The output end of each set of third cylinders is fixed with a second connecting plate. A connecting frame is fixed on one side of the second connecting plate. The connecting frame is slidably connected to the gantry.

[0008] A support block is fixed on the side of each connecting frame away from the gantry. An air duct is fixed on the support block close to the laser tester. A guide block is arranged below the support block close to the laser tester. The guide block is connected to the air duct.

[0009] According to the above technical solution, an electric telescopic rod is fixed on the support block on the side away from the laser tester. The electric telescopic rod is electrically connected to the controller. The output end of the electric telescopic rod is fixed with a pressing plate. The pressing plate is located below the support block and above the guide rail.

[0010] According to the above technical solution, a hollow cavity is opened inside the guide block above. A plurality of ventilation holes are opened on the side of the guide block away from the air duct. The plurality of ventilation holes penetrate through the hollow cavity. The air duct penetrates through the inside of the hollow cavity. The other end of the air duct is connected to a hot air source.

[0011] According to the above technical solution, the straightening mechanism includes a roller assembly, a motor screw drive assembly and a sliding plate. The motor screw drive assembly is arranged on one side of the placement table. The sliding plate is threadedly connected above the motor screw drive assembly.

[0012] According to the above technical solution, the roller assembly includes two sets of fourth cylinders. The two sets of fourth cylinders are fixed on the top of the sliding plate. The output end of each set of fourth cylinders is fixed with a connecting block. Connecting rods are fixed on the upper and lower sides of the connecting block. A correction wheel is hinged between the two connecting rods. The side surface of the correction wheel is convex and matches the side groove surface of the guide rail.

[0013] According to the above technical solution, since the guide rail needs to be turned over during straightening, and the positions of the side groove surfaces of the guide rail after turning over will be upside down. In order to adapt to two different situations, the protrusions on the sides of the two groups of straightening wheels respectively adapt to the side groove surfaces of the guide rail in two states. Mark the upper and lower surfaces of the guide rail as surface M and surface N respectively, where surface M is the upper surface and surface N is the lower surface.

[0014] A method for using a guide rail straightening device for a linear motor, including a straightening method: After the upper and lower surfaces and the side groove surfaces of the guide rail are heated, start the first cylinder to extend to control the guide rail to move away from the placement table, and then control the flipping assembly to flip the guide rail 180 degrees so that the M surface of the guide rail faces the placement table, and control the first cylinder to contract to make the M surface of the guide rail contact the surface of the placement table, with the N surface facing up, and then the tested groove surface faces the roller assembly.

[0015] The driving motor screw drive assembly moves the roller assembly to the position where the side groove surface of the guide rail is bent. At this time, control the straightening wheel matching the side groove surface to contact the side groove surface of the guide rail, and control the driving of the motor screw drive assembly under the condition of heating at the bent position, so as to control the straightening wheel to roll back and forth at the bent position to straighten the bent position.

[0016] According to the above technical solution, while straightening the side groove surface of the guide rail, synchronously control the gantry to drive the pressing plate to the bent part of the N surface, and control the electric telescopic rod to extend to make the pressing plate press against the outward bent part of the N surface of the guide rail to straighten the position.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are: in the present invention, by providing a testing component and a processing component, the straightening device is automatically controlled to synchronously straighten the N surface and the detected side groove surface of the guide rail, without manual judgment for straightening, improving the straightening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the internal structural schematic Figure 1 ; Figure 3 is the internal structural schematic Figure 2 ; Figure 4 is the present invention Figure 3 partial enlarged schematic diagram of area A; Figure 5is the present invention Figure 3 Schematic diagram of partial enlargement of area B of the present invention; Figure 6 Schematic two-dimensional diagram of the guiding block of the present invention; Figure 7 Schematic two-dimensional diagram of the placement table of the present invention; Figure 8 Schematic diagram of the guide rail of the present invention; Figure 9 Schematic diagram of the detection straight-line error curve of the side groove surface of the guide rail of the present invention; In the figure: 1, lower bracket; 2, upper bracket; 3, mounting plate; 4, motor screw drive assembly; 5, gantry; 6, placement table; 7, third cylinder; 8, connecting frame; 9, sliding plate; 10, support block; 11, electric telescopic rod; 12, air duct; 13, guiding block; 14, second cylinder; 15, positioning plate; 16, laser tester; 17, fixing plate; 18, first cylinder; 19, lifting table; 20, first motor; 21, first bearing plate; 22, clamping sleeve; 23, fourth cylinder; 24, connecting block; 25, correcting wheel; 26, connecting rod; 27, hollow cavity; 28, ventilation hole; 29, controller; 30, pressure sensor; 31, sliding plate. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-9 , the present invention provides a technical solution: a straightening device for a guide rail of a linear motor, including a lower bracket 1 and an upper bracket 2. The upper bracket 2 is fixed above the lower bracket 1. A clamping mechanism, a detection mechanism, and a straightening mechanism are provided on the top of the lower bracket 1. The clamping mechanism is used for clamping the guide rail, the straightening mechanism is used for straightening the guide rail, and the detection mechanism is used for detecting whether the guide rail is bent and deformed.

[0021] A controller 29 is fixed on the top of the upper bracket 2. A mounting plate 3 is fixed on the upper bracket 2. A placement table 6 is fixed in the middle of the mounting plate 3. The controller 29 includes a position recording module and an alarm module.

[0022] The clamping mechanism includes a lifting component and a flipping component. There are two sets of lifting components, which are respectively arranged on the left and right sides of the placement table 6. Each set of lifting components includes two first cylinders 18 fixed on the fixed mounting plate 3. The output end of the first cylinder 18 is fixed with a lifting table 19. The flipping component is arranged on the lifting table 19, and the guide rail can be controlled to flip on the placement table 6 through the flipping component; It should be added that the two first cylinders 18 on one side are linearly driven and connected to the mounting plate 3.

[0023] The flipping component includes a first carrier plate 21 and two second carrier plates. The first carrier plate 21 and the two second carrier plates are fixed on the lifting table 19. A limit sleeve is fixed on the first carrier plate 21. A first motor 20 is fixed on the two second carrier plates. The inside of the limit sleeve is connected by a bearing with a clamping sleeve 22. A groove adapted to the side surface of the guide rail is opened inside the clamping sleeve 22. A mounting hole is opened at the top of the clamping sleeve 22. The mounting hole is a threaded hole, and the mounting hole penetrates through the groove adapted to the side surface of the guide rail. The output end of the first motor 20 is fixedly connected to one side of the clamping sleeve 22.

[0024] Insert the guide rail into one set of clamping sleeves 22, and then control the first cylinder 18 on the other side to move on the mounting plate 3 on the side close to the placement table 6, so that the other set of clamping sleeves 22 is sleeved outside the guide rail. When both sets of clamping sleeves 22 have sleeved the guide rail, fix the two ends of the guide rail by passing an external screw through the mounting hole; Mark the upper and lower surfaces of the guide rail as surface M and surface N respectively, where surface M is the upper surface and surface N is the lower surface (as Figure 8 shown). Control the first cylinder 18 to contract to place the guide rail on the placement table 6. Since there are multiple pressure sensors 30 arranged on the placement table 6 (as Figure 7 shown), and the pressure sensors 30 are electrically connected to the controller 29. Therefore, when the guide rail is placed on the placement table 6, the pressure detected by the pressure sensors 30 is transmitted to the controller 29. When the pressure detected by one of the pressure sensors 30 is greater than the pressure values detected by other pressure sensors 30, it indicates that there is an outward bending deformation at the lower surface of the guide rail, that is, at the position of surface N. When the detected pressure is less than the pressure values detected by other pressure sensors 30, it indicates that there is an inward bending of the N surface of the guide rail, which is difficult to correct, and the signal is transmitted to the alarm module.

[0025] The detection mechanism includes a test component and a processing component. The test component includes a gantry 5 and a slide plate 9. There are two sets of slide plates 9, which are located on both sides of the placement table 6 respectively. Both sides of the gantry 5 are fixed on the slide plates 9. The slide plates 9 are connected to the mounting plate 3 through a linear drive. A second cylinder 14 is fixedly installed on the side of the gantry 5. A connecting plate one is fixed to the output end of the second cylinder 14. A positioning plate 15 is fixed below the connecting plate one. A fixing plate 17 is fixedly connected to the positioning plate 15. A laser tester 16 is fixed on the fixing plate 17. The laser tester 16 is electrically connected to the controller 29; When it is necessary to detect the groove surfaces on both sides of the guide rail, control the second cylinder 14 to start, so that the laser tester 16 contacts one side of the groove surface of the guide rail. To ensure the accuracy of the test, the groove surface of the guide rail is divided into three positions: upper, middle and lower (as Figure 8 shown, which are marked as Q, W, and E respectively). First, control the laser tester 16 to contact the upper position of the groove surface of the guide rail, and then control the gantry 5 to slide along the guide rail on the mounting plate 3 until the other end of the guide rail, indicating that the detection of the upper position of the groove surface of the guide rail is completed. Through this step, the laser interference signal is collected in real time to generate a straightness error curve; Then repeat the above-mentioned laser tester 16 position adjustment steps, so that the test end of the laser tester 16 contacts the middle position of the groove surface of the guide rail, and continue to control the gantry 5 to slide along the guide rail to make the gantry 5 return to its original position; It should be noted that when detecting the lower position of the groove surface of the guide rail, the above-mentioned operation steps are still repeated, and no more details will be elaborated.

[0026] Transmit the test values of the upper, middle and lower positions on the guide rail to the controller 29. When it is recognized that there are sudden waves in the generated straightness error curve (as Figure 9 shown), it indicates that the position of the groove surface on the side of the guide rail is bent.

[0027] Furthermore, comprehensively judge the overall bending condition of the groove surface on the side of the guide rail according to the bending conditions of the upper, middle and lower positions on the guide rail; Specifically, if only one of the positions is bent, it indicates that the overall bending condition of the groove surface on the side of the guide rail is low level. When any two of them are bent, it indicates that the overall bending degree of the groove surface on the side of the guide rail is also medium level. When all three positions are bent, it indicates that the overall bending condition of the groove surface of the guide rail is high level; It should be noted that a position recording module is set in the controller 29. Through the position recording module, the bent position of the groove surface on the side of the guide rail can be recorded, which is convenient for subsequent heating and straightening work.

[0028] The processing component includes two groups of third cylinders 7, each group of third cylinders 7 is fixed on the top of the gantry 5, the output ends of the two groups of third cylinders 7 are arranged in opposite directions, a second connecting plate is fixed at the output end of each group of third cylinders 7, a connecting frame 8 is fixed on one side of the second connecting plate, and the connecting frame 8 is slidably connected with the gantry 5. Among them, the third cylinder 7 can control the connecting frame 8 to slide on the gantry 5 in a direction perpendicular to the guide rail; A support block 10 is fixed on one side of each connecting frame 8 away from the gantry 5. An air duct 12 is fixed on the support block 10 close to the laser tester 16. A guide block 13 is arranged below the support block 10 close to the laser tester 16, and the guide block 13 is connected to the air duct 12.

[0029] The side of the guide block 13 close to the guide rail is shorter than the side away from the guide rail, which is convenient for guiding the internal air flow to the guide rail.

[0030] A hollow cavity 27 is opened inside the guide block 13 above. A number of ventilation holes 28 are opened on one side of the guide block 13 away from the air duct 12. The number of ventilation holes 28 penetrates through the hollow cavity 27. The air duct 12 penetrates through the inside of the hollow cavity 27. The other end of the air duct 12 is connected to a hot air source (not shown in the figure). Starting the hot air source can transmit the hot air flow through the air duct 12 into the guide block 13, and then blow it out through the ventilation holes 28 to the side groove surface of the guide rail to soften the side groove surface of the guide rail.

[0031] An electric telescopic rod 11 is fixed on the support block 10 away from the laser tester 16. The electric telescopic rod 11 is electrically connected to the controller 29. The output end of the electric telescopic rod 11 is fixed with a pressing plate (not shown in the figure). The pressing plate is located below the support block 10 and above the guide rail.

[0032] When the hot air blows to the side groove surface of the guide rail, start the flipping component to control the guide rail to flip, so that the side of the guide rail close to the test component faces the guide block 13. When the guide block 13 works, synchronously control the two groups of sliding plates 9 to move along the guide rail direction on the mounting plate 3, so that the guide block 13 moves back and forth at the position where the side groove surface of the guide rail is recorded to be bent, and the position of the side groove surface of the guide rail can be accurately heated and softened. It should be added that the heating duration is low, medium and high according to the overall bending situation of the side groove surface of the guide rail, and gradually increases to better ensure the softening effect; Further, when there are bending phenomena on the upper or lower surface of the guide rail at the same time, then the flipping component is controlled to make the upper or lower surface of the guide rail face the guide block 13 to soften the bent positions on the upper and lower surfaces of the guide rail.

[0033] The straightening mechanism includes a roller assembly, a motor screw drive assembly 4 and a sliding plate 31. The motor screw drive assembly 4 is arranged on one side of the placement table 6. The motor screw drive assembly 4 is a prior art and will not be described in detail here. The sliding plate 31 is threadedly connected to the top of the motor screw drive assembly 4. Starting the motor screw drive assembly 4 allows the sliding plate 31 to slide on the top of the motor screw drive assembly 4.

[0034] The roller assembly includes two groups of fourth cylinders 23, which are fixed on the top of the sliding plate 31. A connecting block 24 is fixed to the output end of each group of fourth cylinders 23. Connecting rods 26 are fixed to the upper and lower sides of the connecting block 24. A correction wheel 25 is hinged between the two groups of connecting rods 26. The side of the correction wheel 25 is convex and matches the groove surface of the guide rail side. The extension of the fourth cylinder 23 can make the correction wheel 25 contact the groove surface of the guide rail side. It should be added that, since the guide rail needs to be turned over during correction, the position of the guide rail side groove surface will be reversed after turning over. In order to adapt to two different situations, the protrusions on the sides of the two sets of correction wheels 25 are respectively adapted to the guide rail side grooves in the two states.

[0035] A method for using a guide rail straightening device for a linear motor, comprising a straightening method: After the upper and lower surfaces and the side groove surfaces of the guide rail are heated, the first cylinder 18 is started to extend and control the guide rail to move away from the placement table 6, and then the flip assembly is controlled to flip the guide rail 180 degrees, so that the M surface of the guide rail faces the placement table 6, and the first cylinder 18 is controlled to shrink, so that the M surface of the guide rail contacts the surface of the placement table 6, and the N surface faces upward, and then the tested groove surface faces the roller assembly; The motor screw drive assembly 4 is driven to move the roller assembly to a position where there is a bending position on the side groove surface of the guide rail. At this time, the correction wheel 25 matching the side groove surface is controlled to contact the side groove surface of the guide rail. When the bending position is heated, the motor screw drive assembly 4 is controlled to drive so as to control the correction wheel 25 to roll back and forth at the bending position to correct the bending position.

[0036] While correcting the groove surface on the side of the guide rail, the gantry 5 is synchronously controlled to drive the pressing plate to the bending part of the N surface, and the electric telescopic rod 11 is controlled to extend so that the pressing plate is pressed against the outward bending part of the N surface of the guide rail to correct the position; Through the above steps, the N surface of the guide rail and the detected side groove surface are corrected synchronously by the automatic control correction device, without the need for manual judgment and correction, thereby improving the correction efficiency.

[0037] After the correction is completed, the aforementioned detection steps are repeated to further determine whether the M surface is bent outward and whether the side groove surface at another location of the guide rail is bent.

[0038] Specifically, before detecting whether the M surface bends outward, first judge the pressure condition of the M surface before the N surface is corrected on the placement table 6 and whether there is a bending condition on the other side groove surface of the guide rail, and transmit the detected signal to the controller 29. Then start the pressing plate to press against the N surface for correction. Compare the pressure of the M surface on the placement table 6 before correction with the pressure of the M surface on the placement table 6 after correction to judge the rigidity of the guide rail: When the pressure of the M surface on the placement table 6 after correction remains unchanged compared with the pressure of the M surface on the placement table 6 before correction, it indicates that the rigidity of the guide rail is strong. When the pressure of the M surface on the placement table 6 after correction changes compared with the pressure of the M surface on the placement table 6 before correction, and the M surface bends outward, it indicates that the guide rail bends under the working condition of the pressing plate, indicating poor rigidity. Transmit the signal to the alarm module to notify the staff to remove the guide rail.

[0039] It should be noted that when the pressure of the M surface on the placement table 6 after correction remains unchanged compared with the pressure of the M surface on the placement table 6 before correction, the M surface of the guide rail itself may still bend outward. Mark this position through the controller 29 for subsequent re-turning and pressing flat correction by the pressing plate.

[0040] After determining that the M surface is flat, detect the side groove surface at another place of the guide rail. Further analyze whether the side groove surface at another place deforms after the guide rail is subjected to pressure. Compare the side groove surface at another place before correcting the N surface with the side groove surface at another place after correcting the N surface. When the two remain unchanged, it indicates that there is no deformation due to the correction pressure. When the two change, it indicates that there is a bending phenomenon due to the deformation caused by the correction pressure. Further, judge the position where the bending phenomenon exists on the side groove surface and transmit the position to the controller 29. Repeat the foregoing heating treatment and correction steps to ensure the correction quality.

[0041] It should be added that when correcting the groove surface, repeat the turning-over step. At this time, the guide rail returns to the initial state with the N surface below and the M surface above. At this time, another set of correction wheels 25 is used to correct the groove surface at another place of the guide rail. Correction by the adapted correction wheels 25 is more accurate than the existing correction means and ensures the correction quality.

[0042] Through the above steps, synchronously detect the bending of the upper and lower planes of the guide rail and the side groove surfaces on the left and right sides of the guide rail to improve the production quality of the guide rail.

[0043] It should be noted that, in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0044] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A guide rail straightening device for a linear motor, comprising a lower bracket (1) and an upper bracket (2), characterized in that: The upper bracket (2) is fixed above the lower bracket (1), and the top of the lower bracket (1) is provided with a clamping mechanism, a detection mechanism and a straightening mechanism, the clamping mechanism is used to clamp the guide rail, the straightening mechanism is used to straighten the guide rail, and the detection mechanism is used to detect whether the guide rail is bent or deformed; A controller (29) is fixed on the top of the upper bracket (2), a mounting plate (3) is fixed on the upper bracket (2), a placement table (6) is fixed in the middle of the mounting plate (3), and the controller (29) includes a position recording module and an alarm module; The detection mechanism comprises a test component and a processing component. The test component comprises a gantry (5) and a slide plate (9). Two groups of slide plates (9) are provided, which are respectively located on two sides of a placement table (6). The two sides of the gantry (5) are respectively fixed on the slide plates (9). The slide plates (9) are connected to the mounting plate (3) through a linear drive. A second cylinder (14) is fixedly mounted on the side of the gantry (5). A connecting plate 1 is fixed to the output end of the second cylinder (14). A positioning plate (15) is fixed below the connecting plate 1. A fixing plate (17) is fixedly connected to the fixing plate (17). A laser tester (16) is fixed to the fixing plate (17). The laser tester (16) is electrically connected to a controller (29).

2. A guide rail straightening device for a linear motor according to claim 1, characterized in that: The processing assembly comprises two groups of third cylinders (7), each group of the third cylinders (7) is fixed on the top of the gantry (5), the output ends of the two groups of the third cylinders (7) are arranged opposite to each other, the output end of each group of the third cylinders (7) is fixed with a second connecting plate, one side of the second connecting plate is fixed with a connecting frame (8), and the connecting frame (8) is slidably connected to the gantry (5); A support block (10) is fixed to a side of each group of the connecting frames (8) away from the gantry (5), an air duct (12) is fixed to the support block (10) on the side close to the laser tester (16), and a guide block (13) is arranged below the support block (10) on the side close to the laser tester (16), and the guide block (13) is connected to the air duct (12).

3. A guide rail straightening device for a linear motor according to claim 2, characterized in that: An electric telescopic rod (11) is fixed on the support block (10) on the side away from the laser tester (16), and the electric telescopic rod (11) is electrically connected to the controller (29). A pressure plate is fixed to the output end of the electric telescopic rod (11), and the pressure plate is located below the support block (10) and above the guide rail.

4. A guide rail straightening device for a linear motor according to claim 3, characterized in that: A hollow cavity (27) is provided inside the upper portion of the guide block (13); a plurality of ventilation holes (28) are provided on a side of the guide block (13) away from the air duct (12); the plurality of ventilation holes (28) penetrate the hollow cavity (27); the air duct (12) penetrates the interior of the hollow cavity (27); and the other end of the air duct (12) is connected to a hot air source.

5. A guide rail straightening device for a linear motor according to claim 4, characterized in that: The straightening mechanism comprises a roller assembly, a motor screw drive assembly (4) and a sliding plate (31), wherein the motor screw drive assembly (4) is arranged on one side of the placement table (6), and the sliding plate (31) is threadedly connected to the top of the motor screw drive assembly (4).

6. A guide rail straightening device for a linear motor according to claim 5, characterized in that: The roller assembly comprises two groups of fourth cylinders (23), the two groups of fourth cylinders (23) being fixed on the top of the sliding plate (31), a connecting block (24) being fixed to the output end of each group of fourth cylinders (23), connecting rods (26) being fixed to the upper and lower sides of the connecting block (24), a correction wheel (25) being hinged between the two groups of connecting rods (26), and a side surface of the correction wheel (25) being convex and matching the groove surface of the guide rail side.

7. A guide rail straightening device for a linear motor according to claim 6, characterized in that: Since the guide rail needs to be turned over when being corrected, and the position of the guide rail side groove surface after being turned over will be upside down, in order to adapt to two different situations, the protrusions on the side surfaces of the two sets of correction wheels (25) are respectively adapted to the guide rail side grooves in two states; Mark the upper and lower surfaces of the guide rail as M side and N side respectively, where M side is the upper side and N side is the lower side.

8. A method for using a guide rail straightening device for a linear motor, using the guide rail straightening device for a linear motor according to claims 1 to 7, characterized in that: Straightening methods included: After the upper and lower surfaces and the side groove surfaces of the guide rail are heated, the first cylinder (18) is started to extend and control the guide rail away from the placement table (6), and then the flip assembly is controlled to flip the guide rail 180 degrees so that the M surface of the guide rail faces the placement table (6), and the first cylinder (18) is controlled to retract so that the M surface of the guide rail contacts the surface of the placement table (6) and the N surface faces upward, and then the tested groove surface faces the roller assembly; The motor screw drive assembly (4) is driven to move the roller assembly to a position where the side groove surface of the guide rail is bent. At this time, a correction wheel (25) matching the side groove surface is controlled to contact the side groove surface of the guide rail. When the bent position is heated, the motor screw drive assembly (4) is controlled to drive so as to control the correction wheel (25) to roll back and forth at the bent position to correct the bent position.

9. The method for using the guide rail straightening device for a linear motor according to claim 8, characterized in that: While correcting the groove surface on the side of the guide rail, the gantry (5) is synchronously controlled to drive the pressure plate to the bend of the N surface, and the electric telescopic rod (11) is controlled to extend so that the pressure plate is pressed against the outward bend of the N surface of the guide rail to correct the position there.

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