Guide rail straightness detection and correction device

Abstract

The utility model discloses a guide rail straightness detection and correction device. The guide rail straightness detection and correction device comprises a bearing table, a detection mechanism and a correction mechanism, the bearing table is used for bearing a tested guide rail; the detection mechanism is located on the side edge of the bearing table, is parallel to the detected guide rail and is used for detecting the straightness of the detected guide rail; wherein the detection mechanism comprises a linear motion module and a detection module arranged on the linear motion module, and the detection module is in contact with the detected guide rail and can detect the straightness of the detected guide rail under the displacement action of the linear motion module; the correction mechanism is located on the side edge of the bearing table and parallel to the detected guide rail, the correction mechanism can be connected with or disconnected from the detected guide rail, and when the correction mechanism is connected with the detected guide rail, the detected guide rail can be corrected according to the straightness of the detected guide rail. According to the utility model, the detection efficiency and correction efficiency of the guide rail are improved, and the automation degree is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to guide rail technical field especially relates to a guide rail straightness detection and correction device. BACKGROUND

[0002] The guide rail is a kind of support and guide moving part, can reciprocate linear motion according to given direction mechanical device, it is widely used in the mechanical equipment in various fields, mainly for realizing accurate positioning and motion control, guarantee the efficient operation of mechanical equipment.

[0003] In the actual application process, the straightness of guide rail directly influences the precision and stability of support and guide moving part, if guide rail is not straight enough, moving part can produce skew or vibration when running, lead to precision decline, unstable operation, even damage equipment. Therefore, in the process of production, it is crucial to carry out straightness detection and correction to guide rail.

[0004] At present, laser measuring instrument is used when carrying out straightness detection to guide rail, and the detection precision of laser measuring instrument is higher, can quickly and accurately measure the straightness error of guide rail. But when carrying out straightness correction to guide rail, it is manually corrected according to straightness error, and the working efficiency is lower, and the accuracy is lower, and the degree of automation is lower.

[0005] In the implementation of the utility model, the inventor finds that there are at least the following problems in the prior art:

[0006] The degree of automation is low when carrying out straightness detection and correction to guide rail. CONTENT OF UTILITY MODEL

[0007] The utility model aims at providing a kind of guide rail straightness detection and correction device, to solve the technical problems of low degree of automation in prior art when carrying out straightness detection and correction to guide rail. The preferred technical solutions of many technical solutions provided by the utility model can produce many technical effects, which are described in detail below.

[0008] To achieve the above object, the utility model provides the following technical solutions:

[0009] The utility model provides a kind of guide rail straightness detection and correction device, including: bearing table, detection mechanism and correction mechanism;

[0010] The bearing table is used to bear the guide rail to be measured;

[0011] The detection mechanism is located at the side of the bearing table and is parallel to the measured guide rail, and is used for detecting the straightness of the measured guide rail; wherein the detection mechanism comprises a linear motion module and a detection module arranged on the linear motion module, the detection module is in contact with the measured guide rail and can detect the straightness of the measured guide rail under the displacement action of the linear motion module.

[0012] The correction mechanism is located at the side of the bearing table and is parallel to the measured guide rail, and the correction mechanism can be connected or disconnected with the measured guide rail, when the correction mechanism is connected with the measured guide rail, the measured guide rail can be corrected according to the straightness of the measured guide rail.

[0013] Optionally, the linear motion module comprises a linear slide rail, a motion platform and a driving motor; the motion platform is located above the linear slide rail and is in sliding connection with the linear slide rail; the driving motor is connected with the motion platform and is used for driving the motion platform to displace on the linear slide rail.

[0014] Optionally, the detection module comprises a first detection module and a second detection module, and the first detection module and the second detection module are arranged on the linear motion module; wherein the first detection module comprises a laser emitting assembly and a mirror assembly, the laser emitting assembly is fixedly arranged at one end of the linear slide rail, the mirror assembly is fixedly arranged on the motion platform and is oppositely arranged with the laser emitting assembly; the second detection module is arranged on the motion platform.

[0015] Optionally, the second detection module comprises a fixed seat, a moving shaft, a detection head and a moving seat, the fixed seat is fixedly connected with the motion platform, the moving shaft transversely penetrates through the fixed seat and can transversely displace in the fixed seat, the detection head is arranged at one end of the moving shaft and is used for contacting with the measured guide rail, and the moving seat is fixedly connected with the moving shaft.

[0016] Optionally, the second detection module further comprises a reading assembly and a grating assembly, the grating assembly is fixedly arranged on the moving seat, and the reading assembly is oppositely arranged with the grating assembly on the fixed seat.

[0017] Optionally, the fixed seat is in inverted U-shaped structure, and a shaft sleeve is arranged at the connection between the fixed seat and the moving shaft.

[0018] Optionally, the mirror assembly comprises a mirror and a mounting seat; the mirror is fixedly connected with the mounting seat, and the mounting seat is fixedly connected with the motion platform.

[0019] Optionally, the correction mechanism comprises a correction motion module and a correction module; the correction motion module is arranged in parallel with the measured guide rail; the correction module is located above the correction motion module and can be connected with or disconnected from the measured guide rail; when the correction module is in contact with the measured guide rail, the correction module can correct the measured guide rail under the displacement action of the correction motion module.

[0020] Optionally, the correction module comprises an execution assembly, a connecting arm and a correction arm; one end of the connecting arm is connected with the execution assembly, and the other end is connected with the correction arm; the execution assembly is electrically connected with the connecting arm and the correction arm respectively, and is used for adjusting the positions of the connecting arm and the correction arm.

[0021] Optionally, the correction motion module comprises a track and a motion sliding table; the motion sliding table is in sliding connection with the track.

[0022] The above technical scheme of the utility model has the following advantages or beneficial effects:

[0023] The utility model discloses a detection mechanism and correction mechanism, and the detection mechanism can detect the straightness of the measured guide rail, and after detection, the correction mechanism can directly correct the measured guide rail according to the straightness of the measured guide rail, improves the detection efficiency and correction efficiency of the guide rail, and has higher automation degree. ACCURACY

[0024] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawing needed to be used in the embodiment description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for the ordinary skilled person in the art, other drawings can also be obtained according to these drawings without paying creative labor, and the drawings comprise:

[0025] Figure 1 It is the first view schematic diagram of the overall structure of the embodiment of the utility model;

[0026] Figure 2 It is the second view schematic diagram of the overall structure of the embodiment of the utility model;

[0027] Figure 3 It is the structure schematic diagram of the detection mechanism in the embodiment of the utility model;

[0028] Figure 4 It is the overall structure schematic diagram of the second detection module in the embodiment of the utility model;

[0029] Figure 5 It is the structure split schematic diagram of the second detection module in the embodiment of the utility model.

[0030] Fig. 1, bearing table; 2, detection mechanism; 21, linear motion module; 211, linear slide rail; 212, motion platform; 22, first detection module; 221, laser emitting assembly; 222, laser emitting element; 223, base; 224, mirror assembly; 225, mirror; 226, mounting seat; 23, second detection module; 231, fixed seat; 232, moving shaft; 233, detection head; 234, moving seat; 235, shaft sleeve; 236, reading assembly; 237, grating assembly; 238, magnet; 3, correction mechanism; 31, correction motion module; 311, track; 312, motion slide; 32, correction module; 321, execution assembly; 322, connecting arm; 323, correction arm; 4, measured guide rail. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, various exemplary embodiments to be described below will be referred to corresponding drawings, which constitute a part of exemplary embodiments. The same numerals in different drawings represent the same or similar elements unless otherwise indicated. The implementation described in the following exemplary embodiments does not represent all implementations consistent with the present disclosure. It should be understood that they are only examples of processes, methods and devices, etc. consistent with some aspects of the present disclosure as detailed in the appended claims, and other implementations can be used or structural and functional modifications can be made to the implementations listed herein without departing from the scope and spirit of the present disclosure.

[0032] In the description of the utility model, it is understood that the terms "center", "longitudinal", "transverse" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated elements must have a specific orientation, structure and operation. The terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. The term "multiple" means two or more. The terms "connected", "connected" should be understood broadly, for example, it can be fixed connection, detachable connection, integral connection, mechanical connection, electrical connection, communication connection, direct connection, indirect connection through intermediate medium, internal communication of two elements or interaction relationship between two elements. The term "and / or" includes any and all combinations of one or more related listed items. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] To illustrate the technical solution described in this utility model, specific embodiments are described below, showing only the parts related to the embodiments of this utility model.

[0034] Example:

[0035] like Figure 1 As shown, this utility model provides a guide rail straightness detection and correction device, including: a support platform 1, a detection mechanism 2, and a correction mechanism 3; the support platform 1 is used to support the guide rail 4 to be tested; the detection mechanism 2 is located on the side of the support platform 1 and is parallel to the guide rail 4 to be tested, and the detection mechanism 2 is used to detect the straightness of the guide rail 4 to be tested; wherein, the detection mechanism 2 includes a linear motion module 21 and a detection module disposed on the linear motion module 21, the detection module is in contact with the guide rail 4 to be tested, and can detect the straightness of the guide rail 4 to be tested under the displacement action of the linear motion module 21; the correction mechanism 3 is located on the side of the support platform 1 and is parallel to the guide rail 4 to be tested, the correction mechanism 3 can be connected to or disconnected from the guide rail 4 to be tested, and when the correction mechanism 3 is connected to the guide rail 4 to be tested, it can correct the guide rail 4 to be tested according to the straightness of the guide rail 4 to be tested.

[0036] Specifically, the guide rail straightness detection and correction device described in this embodiment includes a support platform 1, a detection mechanism 2, and a correction mechanism 3. The support platform 1, the detection mechanism 2, and the correction mechanism 3 may or may not be set on the same platform, but in any case, the positional relationship between the support platform 1, the detection mechanism 2, and the correction mechanism 3 must be corresponding.

[0037] The following will combine Figures 1-4 This embodiment details the specific structure and function of the guide rail straightness detection and correction device.

[0038] like Figures 1-2 As shown, the support platform 1 is used to support the guide rail 4 under test. The platform surface of the support platform 1 can be configured as a groove to accommodate the guide rail 4. To ensure that the guide rail 4 does not shift during straightness testing and correction, appropriate components, such as blocking elements, can be installed on the support platform 1 to fix the guide rail 4 placed on it. The specific components used to fix the guide rail 4 on the support platform 1 are not specifically limited in this embodiment.

[0039] like Figures 1-2 As shown, the detection mechanism 2 is located on the side of the support platform 1 and parallel to the guide rail 4 under test. The detection mechanism 2 is used to detect the straightness of the guide rail 4 under test. Specifically, the detection mechanism 2 includes a linear motion module 21 and a detection module disposed on the linear motion module 21. The detection module contacts the guide rail 4 under test and can detect the straightness of the guide rail 4 under the displacement of the linear motion module 21.

[0040] As Figure 3 shown, the motion linear module includes a linear slide rail 211, a motion platform 212 and a driving motor (not shown in the figure); the motion platform 212 is located above the linear slide rail 211 and is in sliding connection with the linear slide rail 211; the driving motor is connected with the motion platform 212 and is used to drive the motion platform 212 to displace on the linear slide rail 211. The bottom of the linear slide rail 211 of the motion linear module can be fixedly connected with the platform. The motion platform 212 is arranged above the linear slide rail 211 and is in sliding connection with the linear slide rail 211, and can move in position on the linear slide rail 211. Since the detection module is arranged on the motion linear module, when the motion platform 212 moves in position, the detection module is driven to move in position. Since the motion platform 212 and the measured guide rail 4 are arranged in parallel, when the detection module moves in position under the action of the motion linear module, the straightness of the measured guide rail 4 can be detected.

[0041] The motion platform 212 moves in position on the linear slide rail 211 by being driven by the driving motor. The driving motor is connected with the motion platform 212, controls the motion platform 212 to move at a constant speed on the linear slide rail 211, and ensures the stability of the motion platform 212 in the motion process, and also ensures that the detection module accurately obtains the straightness of the measured guide rail 4.

[0042] As Figures 2-3 shown, the detection module includes a first detection module 22 and a second detection module 23, and the first detection module 22 and the second detection module 23 are both arranged on the linear motion module 21; wherein the first detection module 22 includes a laser emitting assembly 221 and a mirror assembly 224, the laser emitting assembly 221 is fixedly arranged at one end of the linear slide rail 211, the mirror assembly 224 is fixedly arranged on the motion platform 212 and is oppositely arranged with the laser emitting assembly 221; the second detection module 23 is arranged on the motion platform 212.

[0043] The first detection module 22 comprises a laser emitting assembly 221 and a mirror assembly 224. The laser emitting assembly 221 comprises a laser emitting element 222 and a base 223, and the base 223 is fixedly connected with the linear guide rail or is directly a part of the linear guide rail. The laser emitting element 222 is arranged on the base 223 and is used to support the laser emitting element 222. The mirror assembly 224 comprises a mirror 225 and a mounting seat 226, and the mounting seat 226 is fixedly arranged above the moving platform 212, and the mirror 225 is fixedly arranged above the mounting seat 226. It should be noted that the laser emitting element 222 is oppositely arranged with the mirror 225, and the light beam emitted by the laser emitting element 222 is received by the mirror 225. The first detection module 22 can detect the straightness of the linear motion module 21 during the linear motion, and the first detection module 22 can cooperate with the second detection module 23 to detect the straightness of the measured guide rail 4.

[0044] Specifically, the laser emitting element 222 can be selected as a laser collimator or a laser interferometer according to actual conditions. In the actual detection process, if the laser emitting element 222 is selected as a laser collimator, the mirror 225 is correspondingly selected as a common single-sided mirror, and if the laser emitting element 222 is selected as a laser interferometer, the mirror 225 is correspondingly selected as a double-return mirror.

[0045] The second detection module 23 comprises a fixed seat 231, a moving shaft 232, a detection head 233 and a moving seat 234. The fixed seat 231 is fixedly connected with the moving platform 212. The moving shaft 232 transversely penetrates the fixed seat 231 and can transversely displace in the fixed seat 231. The detection head 233 is arranged at one end of the moving shaft 232 and is used to contact the measured guide rail 4. The moving seat 234 is fixedly connected with the moving shaft 232.

[0046] Further, the second detection module 23 further comprises a reading assembly 236 and a grating assembly 237. The grating assembly 237 is fixedly arranged on the moving seat 234, and the reading assembly 236 is oppositely arranged with the grating assembly 237 on the fixed seat 231.

[0047] Specifically, the fixed seat 231 is fixedly arranged on the moving platform 212. The moving shaft 232 transversely penetrates the fixed seat 231 and is movably connected with the fixed seat 231. The detection head 233 and the moving seat 234 are both fixedly connected with the moving shaft 232. The fixed seat 231 is arranged in an inverted U-shaped structure. The moving seat 234 is arranged in a U-shaped groove formed by the fixed seat 231 through the moving shaft 232. The connecting part of the fixed seat 231 and the moving shaft 232 is provided with a shaft sleeve 235, so that the movement of the moving shaft 232 is more smooth.

[0048] Among them, as Figure 5As shown, one end of the detection head 233 is directly in contact with the measured guide rail 4, and the other end is fixedly connected with the moving shaft 232 through the detection head seat. When the straightness of the measured guide rail 4 is detected, if the position of the measured guide rail 4 is found to be deviated, the detection head 233, the moving shaft 232 and the moving seat 234 will all move synchronously according to the position deviation of the measured guide rail 4. When the moving shaft 232 moves, the moving seat 234 will also move, and the grating assembly 237 fixedly arranged on the moving seat 234 will also move. At this time, the reading assembly 236 arranged opposite to the grating assembly 237 on the fixed seat 231 will read the displacement of the grating assembly 237, and finally the displacement of the measured guide rail 4 is measured. It should be noted that the grating assembly 237 in the embodiment is a grating ruler, and the reading assembly 236 is a reading head.

[0049] Since the detection head 233 will move away from or close to the fixed seat 231 under the action of the moving shaft 232 when the straightness of the measured guide rail 4 is detected, in order to ensure that the detection head 233 can continuously detect the measured guide rail 4, repelling magnets 238 are arranged at the opposite positions on the detection head seat of the detection head 233 and on the fixed seat 231, so as to ensure that the detection head 233 is in contact with the measured guide rail 4 at all times.

[0050] It should be noted that since the second detection module 23 can move at a constant speed on the motion platform 212, the displacement of the measured guide rail 4 at different points can be detected. Since the first detection module 22 detects the straightness of the straight line motion module 21 itself, the straightness of the straight line motion module 21 will affect the detection of the straightness of the measured guide rail 4 by the second detection module 23. Therefore, the straightness detected by the first detection module 22 and the straightness detected by the second detection module 23 will be integrated later, and finally the straightness of the measured guide rail 4 is obtained.

[0051] As an optional implementation, the correction mechanism 3 includes a correction motion module 31 and a correction module 32. The correction motion module 31 is arranged in parallel with the measured guide rail 4. The correction module 32 is located above the correction motion module 31 and can be connected or disconnected with the measured guide rail 4. When the correction module 32 is in contact with the measured guide rail 4, the correction module 32 can correct the measured guide rail 4 under the displacement action of the correction motion module 31.

[0052] Further, the correction motion module 31 is used to drive the correction module 32 to move, and the correction motion module 31 is parallel to the measured guide rail 4. When the correction module 32 moves under the action of the correction motion module 31, the straightness of the measured guide rail 4 can be corrected according to the straightness detected by the detection mechanism 2.

[0053] As Figures 1-2As shown, the correction module 32 includes an execution assembly 321, a connecting arm 322 and a correction arm 323, one end of the connecting arm 322 is connected with the execution assembly 321, and the other end is connected with the correction arm 323; the execution assembly 321 is also electrically connected with the connecting arm 322 and the correction arm 323 respectively, for adjusting the positions of the connecting arm 322 and the correction arm 323. The execution assembly 321 in the correction module 32 is used to control the working state of the connecting arm 322 and the correction arm 323, so as to realize the correction of the measured guide rail 4. For example, the execution assembly 321 can realize the adjustment of the connecting arm 322 in the vertical position, so that the connecting arm 322 moves away from or approaches the measured guide rail 4 in the longitudinal direction; the execution assembly 321 can realize the adjustment of the connecting arm 322 in the left and right positions of the measured guide rail 4, so that the connecting arm 322 clamps and corrects the measured guide rail 4. It should be noted that the connecting arm 322 is provided with at least four.

[0054] As an optional embodiment, as shown in Figure 2 As shown, the correction motion module 31 includes a track 311 and a motion slide 312, and the motion slide 312 is slidably connected with the track 311. Specifically, the motion slide 312 is arranged above the track 311 and can move above the track 311 to drive the correction module 32 to move. The motion slide 312 can be driven by a driving motor to move at a constant speed above the track 311.

[0055] It should be noted that when the detection mechanism 2 detects the straightness of the measured guide rail 4, the connecting arm 322 of the correction mechanism 3 is in a lifted state, and the correction arm 323 does not contact the measured guide rail 4. After the detection mechanism 2 completes the detection of the straightness of the measured guide rail 4, the connecting arm 322 of the correction mechanism 3 needs to be lowered so that the correction arm 323 contacts and clamps the measured guide rail 4. Then, the correction mechanism 3 corrects the measured guide rail 4 according to the straightness of the measured guide rail 4 detected by the detection mechanism 2. When the correction mechanism 3 corrects the measured guide rail 4, the detection mechanism 2 also moves synchronously with the correction mechanism 3, so that the straightness of the measured guide rail 4 is detected again while being corrected, which ensures the accuracy of the correction and reduces the straightness error of the measured guide rail 4, thereby improving the yield of the linear guide rail.

[0056] The detection mechanism 2 and the correction mechanism 3 described in the embodiment can detect and correct sub-microns, can detect and correct the measured guide rail 4 with small straightness difference, have high detection and correction accuracy, and have high automation degree.

[0057] The detection mechanism 2 arranged in the embodiment can detect the straightness of the measured guide rail 4, and the correction mechanism 3 can directly correct the measured guide rail 4 according to the straightness of the measured guide rail 4 after detection, so that the detection efficiency and the correction efficiency are improved, and the automation degree is high.

[0058] The embodiment is only a specific example, and does not indicate that the utility model is in this way.

[0059] The above is only a preferred embodiment of the utility model, and those skilled in the art know that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and scope of the utility model.In addition, the features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the utility model without departing from the spirit and scope of the utility model.Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the protection scope of the utility model.

Claims

1. A guide rail straightness detection and correction device, characterized in that, The utility model relates to a straightness detection and correction device for guide rail, which comprises a bearing table (1), a detection mechanism (2) and a correction mechanism (3). The bearing table (1) is used for bearing a measured guide rail (4). The detection mechanism (2) is located at the side of the bearing table (1) and is parallel to the measured guide rail (4), and the detection mechanism (2) is used for detecting the straightness of the measured guide rail (4); wherein the detection mechanism (2) comprises a linear motion module (21) and a detection module arranged on the linear motion module (21), the detection module is in contact with the measured guide rail (4) and can detect the straightness of the measured guide rail (4) under the displacement of the linear motion module (21). The correction mechanism (3) is located at the side of the bearing table (1) and is parallel to the measured guide rail (4), and the correction mechanism (3) can be connected or disconnected with the measured guide rail (4), and when the correction mechanism (3) is connected with the measured guide rail (4), the measured guide rail (4) can be corrected according to the straightness of the measured guide rail (4). The linear motion module (21) comprises a linear slide rail (211), a motion platform (212) and a driving motor; the motion platform (212) is located above the linear slide rail (211) and is in sliding connection with the linear slide rail (211); the driving motor is connected with the motion platform (212) and is used for driving the motion platform (212) to displace on the linear slide rail (211).

2. The guide rail straightness detecting and correcting apparatus according to claim 1, wherein The detection module comprises a first detection module (22) and a second detection module (23), and the first detection module (22) and the second detection module (23) are arranged on the linear motion module (21); wherein the first detection module (22) comprises a laser emission assembly (221) and a mirror assembly (224), the laser emission assembly (221) is fixedly arranged at one end of the linear slide rail (211), the mirror assembly (224) is fixedly arranged on the motion platform (212) and is oppositely arranged with the laser emission assembly (221); the second detection module (23) is arranged on the motion platform.

3. The guide rail straightness detecting and correcting apparatus according to claim 2, wherein The second detection module (23) comprises a fixed seat (231), a moving shaft (232), a detection head (233) and a moving seat (234), the fixed seat (231) is fixedly connected with the motion platform (212), the moving shaft (232) transversely penetrates the fixed seat (231) and can transversely displace in the fixed seat (231), the detection head (233) is arranged at one end of the moving shaft (232) and is used for contacting the measured guide rail (4), and the moving seat (234) is fixedly connected with the moving shaft (232).

4. The guide rail straightness detecting and correcting apparatus according to claim 3, wherein The second detection module (23) further comprises a reading assembly (236) and a grating assembly (237), the grating assembly (237) is fixedly arranged on the moving seat (234), and the reading assembly (236) is oppositely arranged with the grating assembly (237) on the fixed seat (231).

5. The guide rail straightness detecting and correcting apparatus according to claim 4, wherein ​ 6. The guide rail straightness detecting and correcting apparatus according to claim 4, wherein The fixing seat (231) is a reverse U-shaped structure, and a shaft sleeve (235) is arranged at the connection position of the fixing seat (231) and the moving shaft (232).

7. The guide rail straightness detecting and correcting apparatus according to claim 3, wherein The mirror assembly (224) comprises a mirror (225) and a mounting seat (226); the mirror (225) is fixedly connected with the mounting seat (226), and the mounting seat (226) is fixedly connected with the movement platform (212).

8. The guide rail straightness detecting and correcting apparatus according to claim 1, wherein The correction mechanism (3) comprises a correction movement module (31) and a correction module (32); the correction movement module (31) is arranged in parallel with the measured guide rail (4); the correction module (32) is located above the correction movement module (31) and can be connected with or disconnected from the measured guide rail (4); when the correction module (32) is in contact with the measured guide rail (4), the correction module (32) can correct the measured guide rail (4) under the displacement action of the correction movement module (31).

9. The guide rail straightness detecting and correcting apparatus according to claim 8, wherein The correction module (32) comprises an execution assembly (321), a connecting arm (322) and a correction arm (323); one end of the connecting arm (322) is connected with the execution assembly (321), and the other end is connected with the correction arm (323); the execution assembly (321) is also electrically connected with the connecting arm (322) and the correction arm (323) respectively, and is used for adjusting the positions of the connecting arm (322) and the correction arm (323).

10. The guide rail straightness detecting and correcting apparatus according to claim 8, wherein The correction movement module (31) comprises a track (311) and a movement sliding table (312); the movement sliding table (312) is slidingly connected with the track (311).

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