Rolling linear guideway auxiliary guideway profile detection device and use method

Abstract

The present application discloses a device and a method for detecting the profile of a rolling linear guide pair. An upper line laser sensor system and two side line laser sensor systems are installed on a detection platform. The position of the side line laser sensor system in the width direction of the detection platform is adjustable. A reflective corner cone prism can be detachably installed on a horizontal platform, and a laser transceiver is arranged corresponding to the reflective corner cone prism. The device and a method for detecting the profile of a rolling linear guide pair provided by the present invention realize detection of the rolling linear guide pair along the length direction of the measurement system through the operation of a horizontal moving system. The positions of the two side line laser sensor systems in the width direction of the detection platform are adjustable, so that the rolling linear guide pairs of different width models and different height models can be matched through a vertical moving system. The errors of the working position of the horizontal moving system deviating from the length direction of the bed in the horizontal and vertical directions are identified through a straightness compensation system, and compensation is performed.

Description

Technical Field

[0001] The invention relates to the field of guide rail profile index detection, and in particular to a rolling linear guide rail auxiliary guide rail profile detection device and a use method. Background Art

[0002] Rolling linear guides play an important role in various fields and have the advantages of high guiding accuracy, load-bearing performance and good motion stability.

[0003] The rolling linear guide pair is exquisitely designed and consists of core components such as guide rails, sliders, balls or steel balls. These components are precisely processed and assembled to ensure the high precision and smooth operation of the guide pair. As the basis for bearing and guiding, the guide rail has excellent rigidity and stability; the slider forms rolling contact with the guide rail through the built-in balls or steel balls, realizing low-friction and high-efficiency linear motion. The rolling linear guide pair also has good load-bearing capacity and impact resistance, and can cope with various complex working environments and load changes. In terms of application areas, the wide application of rolling linear guide pairs has benefited industrial production, transportation systems, medical equipment, and electronic equipment. Under the premise that high-performance machine tools have higher and higher requirements for speed, precision, and reliability, it has gradually replaced sliding guides and has been used more in the machinery market.

[0004] In the field of guide rail profile indicator detection, there is currently no universal and efficient detection method in China. The traditional micrometer measurement method is still mostly used. This traditional detection method is restricted by the technical level of the detection personnel. Uncertain factors such as human factors and external environmental factors have a great impact on the authenticity of the measurement results. In addition, the detection process is cumbersome and the operation is complicated, resulting in low detection efficiency.

[0005] There are few results in theoretical analysis and research on guide rail profile detection, and no marketable products have been formed. In addition, there are still problems such as non-standard and non-uniform detection indicators, low measurement accuracy and detection efficiency. Summary of the invention

[0006] The main purpose of the present invention is to provide a rolling linear guide rail auxiliary guide surface detection device and a method of use, aiming to solve the problems that there are few theoretical analysis and research results on guide rail surface detection, no market-oriented products have been formed, and there are still problems such as non-standard and non-uniform detection indicators, low measurement accuracy and detection efficiency.

[0007] In order to achieve the above object, the present invention provides a rolling linear guide rail auxiliary guide surface detection device, comprising:

[0008] Bed;

[0009] A horizontal moving system is installed on the bed, and the horizontal moving system includes a horizontal bearing platform and a horizontal driving part that drives the horizontal bearing platform to move in a horizontal direction;

[0010] A vertical moving system, comprising a vertical bearing platform and a vertical driving unit for driving the vertical bearing platform to move in a vertical direction, wherein the vertical driving unit is installed on the horizontal bearing platform;

[0011] The measuring system comprises a detection platform, on which an upper line laser sensing system and two side line laser sensing systems are mounted, wherein the positions of the two side line laser sensing systems in the width direction of the detection platform are adjustable;

[0012] A straightness compensation system, comprising a laser transceiver and a reflective corner cube prism, wherein the reflective corner cube prism is detachably mounted on the horizontal support platform, the laser transceiver is arranged corresponding to the reflective corner cube prism, and the working direction of the laser transceiver is the length direction of the bed;

[0013] A guide rail fixing part, mounted on the bed and used for fixing the rolling linear guide rail pair;

[0014] Wherein, the height of the straightness compensation system matches the height of the guide rail fixing portion.

[0015] Furthermore, the reflective corner cube prism can be detachably mounted on the vertical supporting platform, wherein a driving range of the vertical supporting platform includes a position corresponding to the reflective corner cube prism and the laser transceiver.

[0016] Furthermore, the height of the upper surface of the guide rail fixing portion is adjustable.

[0017] Furthermore, a vertical grating is arranged on the horizontal support platform corresponding to the vertical moving system, and the vertical moving system also includes a first optical path system arranged corresponding to the vertical grating. A horizontal grating is arranged on the bed corresponding to the horizontal moving system, and the horizontal moving system also includes a second optical path system arranged corresponding to the horizontal grating.

[0018] Furthermore, a first travel switch is provided on the horizontal support platform corresponding to the vertical movement system, and a second travel switch is provided on the bed corresponding to the horizontal movement system.

[0019] Furthermore, the two side line laser sensor systems are linked via synchronous reverse motion shafts, and width drive motors are provided corresponding to the synchronous reverse motion shafts.

[0020] Furthermore, the horizontal driving unit includes a suspension function unit, a linear driving motor and a horizontal guide rail, the suspension function unit is used to suspend and support the horizontal supporting platform, the horizontal guide rail is arranged along the length direction of the bed to match the horizontal supporting platform, and the linear driving motor drives the vertical supporting platform.

[0021] Furthermore, a plurality of electromagnetic suction cups are arranged on the guide rail fixing portion.

[0022] The present invention also provides a method of use, which is applied to the above-mentioned rolling linear guide rail auxiliary guide surface detection device, comprising:

[0023] S1, installing the reflective corner cube prism on a horizontal support platform, and matching the reflective corner cube prism with the laser transceiver;

[0024] S2. Adjust the vertical moving system to adjust the measuring system to a suitable height;

[0025] S3, adjusting the distance between the two side line laser sensing systems;

[0026] S4, controlling the horizontal moving system to move the measuring system along the length direction of the bed, and starting the measuring system to obtain the profile data and simultaneously starting the straightness compensation system to obtain the straightness error data;

[0027] S5. Correct the profile data according to the straightness error data.

[0028] Furthermore, the reflective corner cube prism can be detachably mounted on the vertical supporting platform, wherein the driving interval of the vertical supporting platform includes the position of the reflective corner cube prism corresponding to the laser transceiver, and the steps S3 and S4 include:

[0029] S351, controlling the horizontal moving system to move the measuring system along the length direction of the bed, and starting the straightness compensation system to obtain first straightness error data;

[0030] S352, if the first straightness error data is qualified, installing the reflective corner cube on the vertical support platform, and matching the reflective corner cube with the laser transceiver;

[0031] S353, controlling the horizontal moving system to move the measuring system along the length direction of the bed, and starting the straightness compensation system to obtain second straightness error data;

[0032] S354. Determine whether the working state of the vertical support platform is qualified by combining the first straightness error data and the second straightness error data.

[0033] The device and method for detecting the guide profile of a rolling linear guide pair provided by the present invention realize detection of the rolling linear guide pair by a measuring system along the length direction through the operation of a horizontal moving system. The positions of the two side line laser sensor systems in the width direction of the detection platform are adjustable, thereby being able to correspond to rolling linear guide pairs of different width models and rolling linear guide pairs of different height models, and matching is achieved through a vertical moving system. The error of the working position of the horizontal moving system deviating from the length direction of the bed in the horizontal and vertical directions is identified through a straightness compensation system, and compensation is performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of a rolling linear guide rail auxiliary guide profile detection device according to a first embodiment of the present invention;

[0035] Figure 2 It is a side schematic diagram of a rolling linear guide rail auxiliary guide profile detection device according to a first embodiment of the present invention;

[0036] Figure 3 It is a schematic diagram of the installation of the horizontal movement system in the rolling linear guide rail auxiliary guide surface detection device of the first embodiment of the present invention;

[0037] Figure 4 It is a schematic diagram of a vertical moving system in a rolling linear guide rail auxiliary guide profile detection device according to a first embodiment of the present invention;

[0038] Figure 5 It is a side schematic diagram of a vertical moving system in a rolling linear guide rail auxiliary guide profile detection device according to a first embodiment of the present invention;

[0039] Figure 6 It is a schematic diagram of a measuring system in a rolling linear guide rail auxiliary guide profile detection device according to a first embodiment of the present invention;

[0040] Figure 7 It is a schematic diagram of the steps of the method of using the second embodiment of the present invention.

[0041] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0043] Those skilled in the art will appreciate that, unless expressly stated otherwise, the singular forms "a", "an", "said", "above", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements, units, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0044] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0045] Reference Figures 1 to 6 In one embodiment of the present invention, a rolling linear guide rail auxiliary rail profile detection device includes:

[0046] Bed 100;

[0047] A horizontal moving system 200 is installed on the bed 100, and the horizontal moving system 200 includes a horizontal bearing platform 210 and a horizontal driving unit 220 driving the horizontal bearing platform 210 to move in a horizontal direction;

[0048] The vertical moving system 300 includes a vertical carrying platform 310 and a vertical driving unit 320 for driving the vertical carrying platform 310 to move in a vertical direction, wherein the vertical driving unit 320 is installed on the horizontal carrying platform 210;

[0049] The measuring system 400 comprises a detection platform 410, on which an upper line laser sensor system 420 and two side line laser sensor systems 430 are mounted, wherein the positions of the two side line laser sensor systems 430 in the width direction of the detection platform 410 are adjustable;

[0050] A straightness compensation system, comprising a laser transceiver and a reflective corner cube prism 520, wherein the reflective corner cube prism 520 is detachably mounted on the horizontal support platform 210, the laser transceiver is arranged corresponding to the reflective corner cube prism 520, and the working direction of the laser transceiver is the length direction of the bed 100;

[0051] A guide rail fixing part 600, mounted on the bed 100 and used for fixing the rolling linear guide pair 010;

[0052] The height of the straightness compensation system matches the height of the guide rail fixing portion 600 .

[0053] In the prior art, there are few theoretical analyses and research results on guide rail profile detection, and no marketable products have been formed. In addition, there are still problems such as non-standard and non-uniform detection indicators, low measurement accuracy and detection efficiency, etc.

[0054] In the present invention, the bed 100 is a base for installing and fixing subsequent related components.

[0055] The horizontal moving system 200 is installed on the bed 100. The horizontal moving system 200 includes a horizontal bearing platform 210 and a horizontal driving unit 220 that drives the horizontal bearing platform 210 to move in the horizontal direction. The structure of the horizontal driving unit 220 can be various, such as a screw drive or a linear motor drive, etc., specifically for the purpose of being able to drive the horizontal bearing platform 210 in the horizontal direction.

[0056] The vertical moving system 300 is installed on the horizontal platform 210. When the horizontal platform 210 moves, the entire vertical moving system 300 also moves. The vertical moving system 300 includes a vertical platform 310 and a vertical driving unit 320 that drives the vertical platform 310 to move in the vertical direction. The structure of the vertical driving unit 320 can be various, such as a screw drive or a linear motor drive, etc., specifically for the purpose of being able to drive the vertical platform 310 in the vertical direction.

[0057] The measuring system 400 includes a detection platform 410, on which an upper line laser sensor system 420 and two side line laser sensor systems 430 are installed. Taking the upper line laser sensor system 420 as an example, it includes a line laser emitting part and a sensor part. The line laser emitting part projects the laser onto the surface above the rolling linear guide pair 010 to be detected, and the sensor part collects the reflected light data, transmits the collected data to the computer point cloud processing, and performs analysis and calculation. Correspondingly, the side line laser sensor system 430 corresponds to the analysis and measurement of the two side surfaces of the rolling linear guide pair 010. The positions of the two side line laser sensor systems 430 in the width direction of the detection platform 410 are adjustable, so that they can correspond to rolling linear guide pairs 010 of different width models and rolling linear guide pairs 010 of different height models, and the matching is achieved through the vertical moving system 300.

[0058] The straightness compensation system includes a laser transceiver and a reflective corner cube prism 520. The reflective corner cube prism 520 is detachably mounted on the horizontal support platform 210, and the laser transceiver is mounted on the bed 100 and is arranged corresponding to the reflective corner cube prism 520. Since the working position of the horizontal moving system 200 may have a small dimensional error in both the horizontal and vertical directions that deviates from the length direction of the bed 100, and the above error is not conducive to the test of the rolling linear guide pair 010. The above position error is identified and compensated by the straightness compensation system.

[0059] The laser transceiver unit includes a laser, a position photosensitive detector, a data acquisition card, and a power supply. The reflective corner cube prism 520 is mainly used to reflect the laser light of the laser back to the position photosensitive detector of the laser transceiver unit. The position photosensitive detector is a four-quadrant detector, which has the advantages of high sensitivity, fast response time, and wide dynamic range. The four-quadrant detector decomposes the input light signal into horizontal and vertical components. Usually, two mutually perpendicular isolation electrodes are added to the photosensitive element, so that a circular photosensitive surface is divided into four sector-shaped areas, and each area is connected to a common electrode.

[0060] During measurement, the laser transceiver can be placed at the starting end of the bed 100, or set independently, so as to correspond to the reflective corner cube prism 520. The reflective corner cube prism 520 is fixed on the horizontal support platform 210, and the laser of the laser transceiver emits a laser beam parallel to the bed 100, which is received by the position photosensitive detector after being reflected by the corner reflective corner cube prism 520, and serves as a reference beam for straightness measurement. When the horizontal support platform 210 moves, the straightness error causes relative movement between the reflective corner cube prism 520 and the laser beam, thereby causing the position of the light spot received by the laser beam on the position photosensitive detector to change. If there is an X displacement deviation in the horizontal or vertical direction, the center of the light spot irradiated by the laser beam on the position photosensitive detector will move 2X. The voltage signal outputted by the light spot position on the position photosensitive detector is received by the data acquisition card, and the straightness error is finally obtained by processing and analyzing the relationship between the voltage signal size and the light spot position.

[0061] The calculation formula of the spot position is as follows:

[0062]

[0063] Where k is a constant related to the detector;

[0064] I A ,I B ,I C ,I D ——Current values ​​in four quadrants;

[0065] X——lateral straightness error;

[0066] Y——Longitudinal straightness error.

[0067] The above-mentioned straightness compensation system is one method provided in the present invention. Currently, there are many other types of straightness compensation systems, which can also be applied to the present invention.

[0068] The guide rail fixing part 600 is installed on the bed 100 to fix the rolling linear guide pair 010. The position of the guide rail fixing part 600 corresponds to the setting of the measuring system 400, so that after the rolling linear guide pair 010 is fixed, the periphery is corresponded by the measuring system 400.

[0069] The height of the straightness compensation system matches the height of the guide rail fixing part 600. Since the purpose of the straightness compensation system is mainly to compensate for the motion error of the horizontal moving system 200, in fact, the straightness compensation system reflects the dimensional error at its height position. For the ultimate accuracy, the height error at the height position of the rolling linear guide pair 010 should be obtained; therefore, the height of the straightness compensation system is matched with the height of the guide rail fixing part 600, thereby ensuring the accuracy of the final detection result.

[0070] In summary, through the operation of the horizontal moving system 200, the measuring system 400 detects the rolling linear guide pair 010 along the length direction, and the two side line laser sensor systems 430 are adjustable in the width direction of the detection platform 410, so that they can correspond to rolling linear guide pairs 010 of different width models and rolling linear guide pairs 010 of different height models, and matching is achieved through the vertical moving system 300; the straightness compensation system identifies the errors of the working position of the horizontal moving system 200 deviating from the length direction of the bed 100 in the horizontal and vertical directions, and compensates for them.

[0071] In one embodiment, the reflective corner cube prism 520 can be detachably mounted on the vertical support platform 310 , wherein the driving range of the vertical support platform 310 includes a position where the reflective corner cube prism 520 corresponds to the laser transceiver.

[0072] In this embodiment, it is considered that not only the horizontal moving system 200 has abnormal driving position or vibration, but also the vertical moving system 300 has abnormal driving position or vibration. If the reflective corner cube prism 520 is placed on the horizontal moving system 200, it is impossible to determine whether the vertical bearing platform 310 is abnormal; and if the reflective corner cube prism 520 is placed on the vertical bearing platform 310, it is difficult to determine which of the horizontal moving system 200 and the vertical moving system 300 is abnormal. The design of the detachable reflective corner cube prism 520 is adopted, and the working status of the horizontal moving system 200 and the vertical bearing platform 310 can be analyzed successively by adjusting the position of the reflective corner cube prism 520. In particular, when the vertical bearing platform 310 is limited to one of the extreme positions at both ends of the height direction, the reflective corner cube prism 520 corresponds to the laser transceiver. When the reflective corner cube prism 520 is installed on the vertical bearing platform 310, the matching process of the reflective corner cube prism 520 and the laser transceiver is simplified. The reflective corner cube prism 520 can correspond to the laser transceiver by controlling the vertical support platform 310. Specifically, the working process of the reflective corner cube prism 520 and the laser transceiver can refer to the subsequent use method embodiment.

[0073] In one embodiment, the height of the upper surface of the guide rail fixing portion 600 is adjustable.

[0074] In this embodiment, considering that the working height of the straightness compensation system is consistent with the height of the rolling linear guide pair 010, the compensation effect of the straightness compensation system is best. Then in order to avoid the adjustment of the straightness compensation system, the guide rail fixing part 600 is set to be adjustable. Then according to different models of rolling linear guide pairs 010, adjust the guide rail fixing part 600 so that the height of the rolling linear guide pair 010 is consistent with the straightness compensation system. Specifically, it is not limited to whether the overall height of the guide rail fixing part 600 is adjustable or the upper surface part of the guide rail fixing part 600 is height-adjustable. The implementation method of the relevant height adjustment can be various and specific without limitation, for example, it can be pneumatic or motor-driven.

[0075] In one embodiment, a vertical grating is arranged on the horizontal support platform 210 corresponding to the vertical moving system 300, and the vertical moving system 300 also includes a first optical path system arranged corresponding to the vertical grating. A horizontal grating is arranged on the bed 100 corresponding to the horizontal moving system 200, and the horizontal moving system 200 also includes a second optical path system arranged corresponding to the horizontal grating.

[0076] In this embodiment, the vertical grating and the horizontal grating are introduced to make the vertical moving system 300 and the horizontal moving system 200 work more accurately. Specifically, the adaptation and calculation method of the vertical grating and the first optical path system and the adaptation and calculation method of the horizontal grating and the second optical path system refer to the existing conventional settings and will not be repeated here.

[0077] In one embodiment, a first travel switch is disposed on the horizontal support platform 210 corresponding to the vertical moving system 300 , and a second travel switch is disposed on the bed 100 corresponding to the horizontal moving system 200 .

[0078] In this embodiment, the first travel switch and the second travel switch act as insurance to prevent abnormal operation of the vertical moving system 300 and the horizontal moving system 200. For example, when the vertical moving system 300 triggers the first travel switch, the vertical moving system 300 stops working and sends relevant warning information.

[0079] Reference Figure 6 In one embodiment, the two side line laser sensor systems 430 are linked via a synchronous reverse motion shaft 431 , and a width driving motor 432 is provided corresponding to the synchronous reverse motion shaft 431 .

[0080] In the aforementioned embodiment, the two side line laser sensor systems 430 are adjusted in the width direction of the detection platform 410 to adapt to the rolling linear guide pairs 010 of different sizes, but the adjustment method is specifically limited. In this embodiment, the position of the two side line laser sensor systems 430 is adjusted automatically. The width drive motor 432 drives the synchronous reverse motion shaft 431 to rotate. The synchronous reverse motion shaft 431 has two sections of threads with opposite rotation directions to achieve reverse synchronous drive of the two side line laser sensor systems 430. The above specific structure, with reference to the typical setting of the screw transmission, introduces related mechanisms such as guide rods, which will not be repeated here.

[0081] In one embodiment, the horizontal driving unit 220 includes a suspension function unit, a linear driving motor and a horizontal guide rail. The suspension function unit is used to suspend and support the horizontal support platform 210. The horizontal guide rail is arranged along the length direction of the bed 100 to match the horizontal support platform 210. The linear driving motor drives the vertical support platform 310.

[0082] In this embodiment, the horizontal driving unit 220 is limited to suspension, and the drive adopts a linear driving motor, and the horizontal bearing platform 210 (including the components thereon) is suspended and supported by the suspension function part, so that the interference of the horizontal bearing platform 210 with external vibration is reduced, and the accuracy of horizontal driving is higher. The horizontal driving unit 220 includes a suspension function part, a linear driving motor and a horizontal guide rail. The suspension function part is used to suspend and support the horizontal bearing platform 210, and the suspension function part can provide bearing capacity by the principle of magnetic suspension or air suspension. The horizontal guide rail is arranged along the length direction of the bed 100 and matches the horizontal bearing platform 210. The horizontal guide rail plays the role of guiding the movement of the horizontal bearing platform (or the suspension function part can also provide the function of accurately defining the position). The linear driving motor drives the vertical bearing platform 310, so it has the advantages of stability and accuracy. The specific related structure can refer to the driving principle of the linear motor.

[0083] In one embodiment, a plurality of electromagnetic suction cups are disposed on the guide rail fixing portion 600 .

[0084] In this embodiment, considering that the rolling linear guide pair 010 is generally made of magnetizable material, the electromagnetic body can interact with the rolling linear guide pair 010, and multiple electromagnetic suction cups are provided on the guide fixing portion 600. Through the action of the electromagnetic suction cups, the rolling linear guide pair 010 is attracted and fixed. The working mode of the electromagnetic suction cup makes the fixing and releasing process of the rolling linear guide pair 010 relatively simple.

[0085] Reference Figure 7 The present invention also provides a method of use, which is applied to the above-mentioned rolling linear guide rail auxiliary guide surface detection device, comprising:

[0086] S1, installing the reflective corner cube prism 520 on the horizontal support platform 210, and matching the reflective corner cube prism 520 with the laser transceiver;

[0087] S2, adjusting the vertical moving system 300 to adjust the measuring system 400 to a suitable height;

[0088] S3, adjusting the distance between the two side line laser sensing systems 430;

[0089] S4, controlling the horizontal moving system 200 to move the measuring system 400 along the length direction of the bed 100, and starting the measuring system 400 to obtain the profile data and simultaneously starting the straightness compensation system to obtain the straightness error data;

[0090] S5. Correct the profile data according to the straightness error data.

[0091] In this embodiment, all steps except step S1 can be automatically controlled in an automated manner. In step S1, the reflective corner cube prism 520 is mounted on the horizontal support platform 210, and the reflective corner cube prism 520 is matched with the laser transceiver, so that the straightness compensation system can work normally.

[0092] In step S2, the vertical moving system 300 is adjusted to adjust the measuring system 400 to a suitable height so that the measuring system 400 can adapt to the rolling linear guide pair 010. In step S3, the distance between the two side line laser sensor systems 430 is adjusted to adapt to the model of the rolling linear guide pair 010.

[0093] S4, control the horizontal moving system 200 to move the measuring system 400 along the length direction of the bed 100, and start the measuring system 400 to obtain the profile data and start the straightness compensation system to obtain the straightness error data. Take the upper line laser sensor system 420 as an example, including a line laser emitting part and a sensor part. The line laser emitting part projects the laser onto the surface above the rolling linear guide pair 010 to be detected, and the sensor part collects the reflected light data, and transmits the collected data to the computer point cloud processing, and performs analysis and calculation; accordingly, the side line laser sensor system 430 analyzes and measures the two side surfaces of the rolling linear guide pair 010, so that the measuring system 400 can obtain the profile data.

[0094] When the horizontal support platform 210 moves, the straightness error causes the reflective corner cube prism 520 and the laser beam to move relative to each other, thereby changing the position of the spot received by the laser beam on the position photosensitive detector. If there is an X displacement deviation in the horizontal or vertical direction, the center of the spot irradiated by the laser beam on the position photosensitive detector will move 2X. The voltage signal output by the spot position on the position photosensitive detector is received by the data acquisition card, and the straightness error data is finally obtained by processing and analyzing the relationship between the voltage signal size and the spot position.

[0095] The calculation formula of the spot position is as follows:

[0096]

[0097] Where k is a constant related to the detector;

[0098] I A ,I B ,I C ,I D ——Current values ​​in four quadrants;

[0099] X——lateral straightness error;

[0100] Y——Longitudinal straightness error.

[0101] In step S5, the profile data is corrected according to the straightness error data.

[0102] In one embodiment, the reflective corner cube prism 520 can be detachably mounted on the vertical support platform 310, wherein the driving interval of the vertical support platform 310 includes the position of the reflective corner cube prism 520 corresponding to the laser transceiver, and the steps S3 and S4 include:

[0103] S351, controlling the horizontal moving system 200 to move the measuring system 400 along the length direction of the bed 100, and starting the straightness compensation system to obtain first straightness error data;

[0104] S352, if the first straightness error data is qualified, then install the reflective corner cube prism 520 on the vertical support platform 310, and match the reflective corner cube prism 520 with the laser transceiver;

[0105] S353, controlling the horizontal moving system 200 to move the measuring system 400 along the length direction of the bed 100, and starting the straightness compensation system to obtain second straightness error data;

[0106] S354 , judging whether the working state of the vertical support platform 310 is qualified by combining the first straightness error data and the second straightness error data.

[0107] In this embodiment, when the measuring system 400 starts to work, the working status of the horizontal moving system 200 and the vertical supporting platform 310 is first checked.

[0108] In step S351, the horizontal moving system 200 is controlled to move the measuring system 400 along the length direction of the bed 100, and the straightness compensation system is started to obtain the first straightness error data. If the first straightness error data deviates too much from the normal data range, it means that there is a problem with the operation of the horizontal moving system 200, and debugging can be selected.

[0109] When the result of the first straightness error data is acceptable, perform steps S352 and S353, install the reflective corner cube prism 520 on the vertical support platform 310, and match the reflective corner cube prism 520 with the laser transceiver, control the horizontal movement system 200 to move the measurement system 400 along the length direction of the bed 100, and start the straightness compensation system to obtain the second straightness error data.

[0110] It should be noted that, since the vertical support platform 310 is not working during the detection process, what is judged in step S353 is whether the static fixing effect of the vertical support platform 310 is qualified (for example, fixing failure or abnormal vibration occurs, etc.).

[0111] Since the straight line deviation of the reflective corner cube prism 520 on the vertical stage 310 is a superposition of the straight line deviation of the horizontal moving system 200 and the static fixing effect of the vertical stage 310, in step S354, the first straightness error data and the second straightness error data are combined to determine whether the working state of the vertical stage 310 is qualified. If qualified, proceed to the subsequent steps, otherwise, inspection and debugging are required.

[0112] To summarize, the rolling linear guide pair guide surface detection device and use method provided by the present invention realizes that the measuring system 400 detects the rolling linear guide pair 010 along the length direction through the operation of the horizontal moving system 200, and the two side line laser sensor systems 430 are adjustable in the width direction of the detection support platform 410, so that they can correspond to rolling linear guide pairs 010 of different width models and rolling linear guide pairs 010 of different height models, and match them through the vertical moving system 300; the straightness compensation system identifies the errors of the working position of the horizontal moving system 200 deviating from the length direction of the bed 100 in the horizontal and vertical directions, and compensates for them.

[0113] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A rolling linear guide rail auxiliary rail profile detection device, characterized in that: include: Bed (100); A horizontal movement system (200) is installed on the bed (100), wherein the horizontal movement system (200) comprises a horizontal bearing platform (210) and a horizontal driving unit (220) for driving the horizontal bearing platform (210) to move in a horizontal direction; A vertical movement system (300), comprising a vertical bearing platform (310) and a vertical driving unit (320) for driving the vertical bearing platform (310) to move in a vertical direction, wherein the vertical driving unit (320) is mounted on the horizontal bearing platform (210); The measuring system (400) comprises a detection platform (410), on which an upper line laser sensor system (420) and two side line laser sensor systems (430) are mounted, wherein the positions of the two side line laser sensor systems (430) in a width direction of the detection platform (410) are adjustable; A straightness compensation system, comprising a laser transceiver and a reflective corner cube prism (520), wherein the reflective corner cube prism (520) is detachably mounted on the horizontal support platform (210), the laser transceiver is arranged corresponding to the reflective corner cube prism (520), and the working direction of the laser transceiver is the length direction of the bed (100); A guide rail fixing portion (600) mounted on the bed (100) and used for fixing the rolling linear guide rail pair (010); Wherein, the height of the straightness compensation system matches the height of the guide rail fixing part (600).

2. The rolling linear guide rail auxiliary guide surface detection device according to claim 1 is characterized in that: The reflective corner cube prism (520) can also be detachably mounted on the vertical support platform (310), wherein the driving range of the vertical support platform (310) includes a position corresponding to the reflective corner cube prism (520) and the laser transceiver unit.

3. The rolling linear guide rail auxiliary guide surface detection device according to claim 1, characterized in that: The height of the upper surface of the guide rail fixing portion (600) is adjustable.

4. The rolling linear guide rail auxiliary guide surface detection device according to claim 1, characterized in that: A vertical grating is arranged on the horizontal support platform (210) corresponding to the vertical moving system (300), and the vertical moving system (300) further includes a first optical path system arranged corresponding to the vertical grating. A horizontal grating is arranged on the bed (100) corresponding to the horizontal moving system (200), and the horizontal moving system (200) further includes a second optical path system arranged corresponding to the horizontal grating.

5. The rolling linear guide rail auxiliary guide surface detection device according to claim 4, characterized in that: A first travel switch is provided on the horizontal bearing platform (210) corresponding to the vertical moving system (300), and a second travel switch is provided on the bed (100) corresponding to the horizontal moving system (200).

6. The rolling linear guide rail auxiliary rail profile detection device according to any one of claims 1 to 5, characterized in that: The two side line laser sensor systems (430) are linked via a synchronous reverse motion shaft (431), and a width driving motor (432) is provided corresponding to the synchronous reverse motion shaft (431).

7. The rolling linear guide rail auxiliary rail profile detection device according to any one of claims 1 to 5, characterized in that: The horizontal drive unit (220) comprises a suspension function unit, a linear drive motor and a horizontal guide rail. The suspension function unit is used to suspend and support the horizontal support platform (210). The horizontal guide rail is arranged along the length direction of the bed (100) to match the horizontal support platform (210). The linear drive motor drives the vertical support platform (310).

8. The rolling linear guide rail auxiliary rail profile detection device according to any one of claims 1 to 5, characterized in that: A plurality of electromagnetic suction cups are arranged on the guide rail fixing portion (600).

9. A method of use, applied to the rolling linear guide rail auxiliary guide rail profile detection device of claim 1, characterized in that it comprises: S1, installing the reflective corner cube prism (520) on the horizontal support platform (210), and matching the reflective corner cube prism (520) with the laser transceiver; S2, adjusting the vertical moving system (300) to adjust the measuring system (400) to a suitable height; S3, adjusting the distance between the two side line laser sensing systems (430); S4, controlling the horizontal moving system (200) to move the measuring system (400) along the length direction of the bed (100), and starting the measuring system (400) to obtain the profile data and simultaneously starting the straightness compensation system to obtain the straightness error data; S5. Correct the profile data according to the straightness error data.

10. The method of use according to claim 9, characterized in that: The reflective corner cube prism (520) can also be detachably mounted on the vertical support platform (310), wherein a driving interval of the vertical support platform (310) includes a position corresponding to the reflective corner cube prism (520) and the laser transceiver unit, and the steps S3 and S4 include: S351, controlling the horizontal moving system (200) to move the measuring system (400) along the length direction of the bed (100), and starting the straightness compensation system to obtain first straightness error data; S352: if the first straightness error data is qualified, the reflective corner cube prism (520) is mounted on the vertical support platform (310), and the reflective corner cube prism (520) is matched with the laser transceiver; S353, controlling the horizontal moving system (200) to move the measuring system (400) along the length direction of the bed (100), and starting the straightness compensation system to obtain second straightness error data; S354: combining the first straightness error data and the second straightness error data, determining whether the working state of the vertical support platform (310) is qualified.

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