Non-contact whole vehicle clearance surface difference measuring device

Abstract

The utility model discloses a non-contact whole vehicle clearance surface difference measuring device, and relates to the technical field of vehicle clearance surface difference. Comprising a device body, a guide part, a detection device, an adjusting part, a first line laser sensor, a second line laser sensor and a control unit, the guiding part is arranged at the front end of the working face of the device body, one end of the guiding shaft is hinged to the device body, and the other end of the guiding shaft is connected with the device body through a linear spring device so that the guiding shaft can vertically and elastically move relative to the working face of the device body. The detection device is used for detecting inclination angles of the guide shafts; controlling the fine-tuning motor to rotate to control the angle of the second line laser sensor on the adjusting part relative to the working surface of the device body; and connecting the first line laser sensor and the second line laser sensor. The surface difference angle is determined through the guide part, and then the angle of the second line laser sensor towards the gap is adjusted, so that high-precision measurement of the gap is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle gap and flushness, and particularly relates to a non-contact whole vehicle gap and flushness measuring device. Background Art

[0002] In the automotive industry, appearance parts are usually high-profile parts, and the first impression given to customers is very important, so the requirements for vehicle matching are very high. During the production process, it is necessary to measure the flushness and gap of the appearance parts, and it is also necessary to measure the gap and flushness of the appearance of the whole vehicle, such as the door gap and height difference data between the front door and the rear door. Based on the measurement data, it can be judged whether the technical specifications are met. At present, when measuring gaps and flushness, gap gauges and flushness gauges are required. After the gap is measured, the same point needs to be replaced with a flushness gauge for measurement, and the measurement is recorded while recording, which is very inefficient.

[0003] Patent 202123027999.3 discloses an online laser measuring device for door gap difference, including a robot connecting platform, the upper part of which is bolted to the robot, and the lower part is connected to the connecting plate by bolts; the connecting plate is bolted to the lower part of the robot connecting platform at the upper end, and a first laser positioning sensor is installed at the left end, and a second laser displacement sensor is installed at the lower end; the first laser displacement sensor is electrically connected to the electric control box through the first wiring, and is used to emit a first laser beam; the second laser displacement sensor is electrically connected to the electric control box through the second wiring, and is used to emit a second laser beam. However, the structure of the measuring device can only measure the door placed on the coordinate table due to the structural setting. If applied to a whole vehicle, the diameter setting of the first laser displacement sensor and the second laser displacement sensor is not applicable. Therefore, a non-contact whole vehicle gap difference measuring device that can adapt to the whole vehicle is needed. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects and provide a non-contact whole vehicle gap face difference measuring device, which can measure the face difference and gap of the gap on the appearance parts of the whole vehicle, especially determine the face difference angle through the guide part, and then adjust the angle of the second line laser sensor towards the gap to ensure high-precision measurement of the gap.

[0005] The specific technical solutions are as follows:

[0006] A non-contact vehicle gap and flushness measuring device, comprising:

[0007] The device body is provided with a working surface;

[0008] The guide part includes a guide shaft and reference blocks arranged at both ends of the guide shaft, wherein the guide part is arranged at the front end of the working surface of the device body, one end of the guide shaft is hingedly connected to the device body, and the other end of the guide shaft is connected to the device body through a linear spring device so as to enable vertical elastic movement relative to the working surface of the device body;

[0009] A detection device, arranged on the device body and used to detect the inclination angle of the guide shaft relative to the working surface of the device body;

[0010] An adjusting part, arranged on an end of the working surface of the device body opposite to the guiding part, and the adjusting part is connected to the device body through a fine-tuning motor;

[0011] A first line laser sensor is arranged on the working surface of the device body and is located between the guide part and the adjustment part;

[0012] A second line laser sensor is arranged on the adjustment part in parallel with the first line laser sensor;

[0013] The control unit is used to control the rotation of the fine-tuning motor to control the angle of the second line laser sensor on the adjustment part relative to the working surface of the device body according to the detection structure of the detection device; and connect the first line laser sensor and the second line laser sensor.

[0014] Furthermore, in the above solution, the first line laser sensor is arranged parallel to the guide axis.

[0015] Furthermore, in the above scheme, the floating range of the linear spring device is 5-10 mm above and below the hinge end of the guide shaft.

[0016] Furthermore, in the above scheme, the detection device is a distance sensor arranged at the linear spring device perpendicular to the guide shaft, and is used to obtain the inclination angle by calculating the distance at one end of the guide shaft.

[0017] Furthermore, in the above solution, a limit block is provided on the working surface of the device body at the first line laser sensor to prevent the first line laser sensor from being touched.

[0018] Furthermore, in the above solution, the device body is provided with a handheld terminal for hand-holding.

[0019] Furthermore, in the above solution, the device body is provided with a connection terminal corresponding to the robot.

[0020] In the above solution, the reference block is a guide wheel rotatably arranged on the guide shaft.

[0021] Compared with the existing technology, the beneficial effects of the utility model are:

[0022] The utility model improves the measurement accuracy through non-contact measurement and reduces the damage or error that may be caused by contact. The face difference angle is mainly determined by the guide part, and then the angle of the second line laser sensor toward the gap is adjusted, which further improves the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the framework diagram of the functional modules of the utility model;

[0024] Figure 2 It is a schematic diagram of the utility model structure;

[0025] Figure 3 It is a schematic diagram of the structure of the guide part of the utility model.

[0026] In the accompanying drawings, 1-device body, 2-guiding part, 3-detection device, 4-adjusting part, 5-first line laser sensor, 6-second line laser sensor, 7-control unit, 21-guide shaft, 22-reference block, 31-linear spring device, 41-fine-tuning motor. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the embodiments of the invention in conjunction with the accompanying drawings to make the objectives, technical solutions and technical effects of the invention more clearly presented.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] like Figure 1-3 As shown, the utility model discloses a non-contact whole vehicle gap and flushness measuring device, including a device body 1, a guide part 2, a detection device 3, an adjustment part 4, a first line laser sensor 5, a second line laser sensor 6 and a control unit 7.

[0030] The device body 1 is provided with a working surface; the device body 1 is used to provide a mounting base for the functional modules, wherein the working surface is a planar structure.

[0031] The guide part 2 includes a guide shaft 21 and reference blocks 22 disposed at both ends of the guide shaft 21. The guide part 2 is disposed at the front end of the working surface of the device body 1. One end of the guide shaft 21 is hingedly connected to the device body 1, and the other end of the guide shaft 21 is connected to the device body 1 through a linear spring device 31, so that it can move vertically and elastically relative to the working surface of the device body 1. The significance of the guide part 2 is to provide a deviation angle between the two surface parts of the detection gap, and this deviation angle refers to the alignment of the two.

[0032] The detection device 3 is arranged on the device body 1 to detect the inclination angle of the guide shaft 21 relative to the working surface of the device body 1. The detection device 3 is specifically a distance sensor arranged at the linear spring device 31 and perpendicular to the guide shaft 21, and is used to calculate the inclination angle through the distance at one end of the guide shaft 21.

[0033] The adjusting part 4 is arranged on one end of the working surface of the device body 1 relative to the guide part 2, and the adjusting part 4 is connected to the device body 1 through a fine-tuning motor 41. Among them, the fine-tuning motor 41 is a high-precision motor, which is used to control the left and right rotation of the adjusting part 4. Here, the adjusting part 4 should be flush with the working surface of the device body 1 as a basis for measurement. The floating range of the linear spring device 31 is 5-10mm up and down based on the hinged end of the guide shaft 21. Here, the floating range of the linear spring device 31 can be set according to the face difference value measured daily, and it can be greater than the face difference value. For example, the floating range of the linear spring device 31 is 6mm up and down.

[0034] The first line laser sensor 5 is arranged on the working surface of the device body 1 and between the guide part 2 and the adjustment part 4. The first line laser sensor 5 is used to measure the surface difference. The first line laser sensor 5 is arranged parallel to the guide shaft 21, and similarly, is also parallel to the second line laser sensor 6.

[0035] The second line laser sensor 6 is arranged on the adjustment part 4 in parallel with the first line laser sensor 5. The second line laser sensor 6 is used to measure the face difference and the gap.

[0036] The control unit 7 is used to control the rotation of the fine-tuning motor 41 to control the angle of the second line laser sensor 6 on the adjustment part 4 relative to the working surface of the device body 1 according to the detection structure of the detection device 3; and connect the first line laser sensor 5 and the second line laser sensor 6. Generally, the rotation adjustment angle of the fine-tuning motor 41 corresponds to the tilt angle, that is, the deflection is performed in the same direction.

[0037] Furthermore, in the above solution, a limit block is provided on the working surface of the device body 1 at the first line laser sensor 5 to prevent the first line laser sensor 5 from being touched.

[0038] As an embodiment, based on the above solution, this embodiment is provided with a handheld terminal on the device body 1. The handheld terminal is used for people to hold and operate.

[0039] As another embodiment, in this embodiment, based on the above solution, the device body 1 is provided with a connection terminal corresponding to the robot. The connection terminal is used for the robot or manipulator to connect to the device.

[0040] As another embodiment, based on the above solution, the reference block 22 is set as a guide wheel rotatably set on the guide shaft 21. The guide wheel can be suitable for dynamic linear measurement and can meet the needs of overall measurement and analysis of the door gap.

[0041] The operation steps include: first, placing the measuring device at the corresponding gap of the vehicle appearance part, and using the guide shaft 21 and the reference block 22 of the guide part 2 to position it on the working surface, specifically, the reference block 22 at one hinged end of the guide shaft 21 is used as a positioning; then, the inclination angle of the guide shaft 21 relative to the working surface is detected by the detection device 3; then, according to the detection result, the control unit 7 controls the rotation of the fine-tuning motor 41 to adjust the angle of the second-line laser sensor 6 to adapt to different measurement requirements; finally, the gap and face difference are measured by the first-line and second-line laser sensors 6.

[0042] It should be clear that the gap orientations of different appearance parts are different. Here, the gap orientation data of the appearance parts can be stored in the control unit 7, and the fine-tuning motor 41 can be controlled to rotate in combination with the tilt angle so that the second line laser sensor 6 corresponds to the gap.

[0043] The working principle is based on non-contact measurement technology, using laser scanning to detect the gap and flushness of the vehicle's exterior parts. The guide shaft 21 and the reference block 22 of the guide part 2 ensure the stable positioning of the device, while the linear spring device 31 allows the guide shaft 21 to have a certain elastic range of motion in the vertical direction. The detection device 3 measures the inclination angle of the guide shaft 21 through the distance sensor, and the control unit 7 adjusts the angle of the second line laser sensor 6 according to these data to ensure the accuracy of the measurement.

[0044] The above description is only a preferred feasible embodiment of the present invention and is not intended to limit the scope of the patent application of the present invention. All equivalent changes, equivalent substitutions or modified changes performed within the technical spirit and principles suggested by the present invention should be included in the scope of patent protection covered by the present invention.

Claims

1. A non-contact vehicle gap and flushness measurement device, characterized in that: include: The device body is provided with a working surface; The guide part includes a guide shaft and reference blocks arranged at both ends of the guide shaft, wherein the guide part is arranged at the front end of the working surface of the device body, one end of the guide shaft is hingedly connected to the device body, and the other end of the guide shaft is connected to the device body through a linear spring device so as to enable vertical elastic movement relative to the working surface of the device body; A detection device, arranged on the device body and used to detect the inclination angle of the guide shaft relative to the working surface of the device body; An adjusting part, arranged on an end of the working surface of the device body opposite to the guiding part, and the adjusting part is connected to the device body through a fine-tuning motor; A first line laser sensor is arranged on the working surface of the device body and is located between the guide part and the adjustment part; A second line laser sensor is arranged on the adjustment part in parallel with the first line laser sensor; The control unit is used to control the rotation of the fine-tuning motor to control the angle of the second line laser sensor on the adjustment part relative to the working surface of the device body according to the detection structure of the detection device; and connect the first line laser sensor and the second line laser sensor.

2. A non-contact vehicle gap and flushness measuring device according to claim 1, characterized in that: The first line laser sensor is arranged parallel to the guide axis.

3. The non-contact vehicle gap and flushness measuring device according to claim 1, characterized in that: The floating range of the linear spring device is 5-10 mm above and below the hinged end of the guide shaft.

4. The non-contact vehicle gap and flushness measuring device according to claim 1, characterized in that: The detection device is a distance sensor arranged at the linear spring device and perpendicular to the guide shaft, and is used to calculate the inclination angle through the distance at one end of the guide shaft.

5. The non-contact vehicle gap and flushness measuring device according to claim 1, characterized in that: A limit block is also provided on the working surface of the device body at the first line laser sensor to prevent the first line laser sensor from being touched.

6. The non-contact vehicle gap and flushness measuring device according to claim 1, characterized in that: The device body is provided with a handheld end for hand-holding.

7. The non-contact vehicle gap and flushness measuring device according to claim 1, characterized in that: The device body is provided with a connection end corresponding to the robot.

8. The non-contact vehicle gap and flushness measuring device according to claim 1, characterized in that: The reference block is a guide wheel rotatably arranged on a guide shaft.

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