A measuring fixture for European-style guide groove of automobile and its measuring method

Abstract

The present invention relates to a measuring fixture for automobile European guide grooves and a measuring method thereof, which comprises a bracket, a base plate, an environmental simulation part, four capture devices and a touch display, wherein a base plate is provided on the bracket; the environmental simulation part is fixedly connected to the base plate, and four capture devices are provided on the environmental simulation part: a first capture device, a second capture device, a third capture device and a fourth capture device, wherein the capture devices comprise an L-shaped slide rail, a displacement sensor, a two-way slide rail micrometer, a calibration part and a cross laser positioning light, a displacement sensor and a two-way slide rail micrometer are provided on one side of the L-shaped slide rail, and a cross laser positioning light and a calibration part are provided on the other side; and a touch display is provided above the bracket. The present invention accurately inputs the offset of the cross laser positioning light mark into the PLC terminal through the displacement sensor for calculation, obtains the offset, and determines whether the offset distance of the mark point is qualified, and has a novel structure, accurate measurement and simple operation.

Description

Technical Field

[0001] The invention relates to the technical field of automobile European guide grooves, and in particular to a measuring fixture for automobile European guide grooves and a measuring method thereof. Background Art

[0002] Since the criterion of the environmental gauge is that the product must meet the body coordinate system, when the product is installed on the gauge for measurement, the product has three-dimensional bending. Figure 1 , it is very difficult to accurately measure the linear dimensions of the distance between mark points.

[0003] To accurately measure the linear dimensions of the distance between mark points, the product must be corrected to a straight state, and then the product is measured with a measuring tool. However, this state is inconsistent with the actual loading state, so when errors occur during product loading, it is impossible to compare the source of the problem horizontally. Therefore, a measuring fixture is urgently needed to determine whether the mark point offset distance is qualified. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a measuring fixture and a measuring method for an automobile European guide groove, which has the functions of digital calculation and judging whether the mark point offset distance is qualified, novel structure, accurate measurement, and simple operation, and the mark point offset is calculated through PLC calculation.

[0005] The object of the present invention is achieved in that:

[0006] A measuring fixture for a European-style guide groove of an automobile, wherein four measuring points are arranged on the window: a first measuring point, a second measuring point, a third measuring point and a fourth measuring point, wherein the first measuring point and the third measuring point are arranged at two ends of the vertical side of the right-angle side of the window, and the connection direction between the first measuring point and the third measuring point is the Y direction, and the second measuring point and the fourth measuring point are arranged at two ends of the horizontal side of the right-angle side of the window, and the connection direction between the second measuring point and the fourth measuring point is the X direction. The measuring fixture comprises a bracket, a base plate, an environmental simulation piece, four capture devices and a touch display, wherein a base plate is arranged on the bracket; the environmental simulation piece is fixedly connected to the base plate, and four capture devices are arranged on the environmental simulation piece: a first capture device, a second capture device, a third capture device and a fourth capture device, which correspond to the positions of the first measuring point, the second measuring point, the third measuring point and the fourth measuring point respectively; the capture device comprises an L-shaped slide rail, a displacement sensor, a bidirectional slide rail micrometer, a calibration piece and a cross laser positioning light, wherein a displacement sensor and a bidirectional slide rail micrometer are arranged on one side of the L-shaped slide rail, and a cross laser positioning light and a calibration piece are arranged on the other side; and a touch display is arranged above the bracket.

[0007] Furthermore, the L-shaped slide rail includes an integrally formed sensor plate and a laser plate. A horizontal plate is provided at the end of the sensor plate for fixing it on the base plate. A displacement sensor and a bidirectional slide rail micrometer are provided on the sensor plate. A cross laser positioning light is provided at the end of the laser plate. A calibration part is also provided on the laser plate.

[0008] Furthermore, a support column is fixedly connected to the bottom of the bracket, and a rolling wheel is respectively provided at four corners of the bottom of the bracket.

[0009] A measuring method for a measuring fixture for an automobile European guide groove includes the following contents:

[0010] a. When the linear direction of the measurement dimension is in the X direction, the displacement sensors of the second capture device and the fourth capture device on both sides are arranged in the X direction;

[0011] b. The calibration piece simulates the theoretical positions of the second measuring point and the fourth measuring point;

[0012] c. The environmental simulation part simulates the actual loading environment;

[0013] d. again capturing the actual position of the second measuring point on the product by the second capturing device, and capturing the actual position of the fourth measuring point on the product by the fourth capturing device;

[0014] e. The data is transmitted to the PLC terminal to complete the calculation and displayed on the touch screen: if the offset distance between the second measuring point and the fourth measuring point is within the tolerance range, the product is qualified and the green value is displayed; if it is beyond the tolerance range, the product is unqualified and the red value is displayed;

[0015] f. Quality inspectors complete data recording work.

[0016] Furthermore, in step b, before measuring the product, the calibration piece is installed to the corresponding position of the inspection fixture, and the precise positions of the second measuring point and the fourth measuring point on the calibration piece are captured through the cooperation of the second capturing device and the fourth capturing device, and the zeroing operation is completed on the touch display.

[0017] Furthermore, in step c, the product positioning reference is matched with the inspection fixture positioning structure, and the product is installed on the inspection fixture.

[0018] A measuring method for a measuring fixture for an automobile European guide groove includes the following contents:

[0019] a. When the linear direction of the measurement dimension is in the Y direction, the displacement sensors of the first capture device and the third capture device on both sides are arranged in the Y direction;

[0020] b. The calibration piece simulates the theoretical positions of the first measuring point and the third measuring point;

[0021] c. The environmental simulation part simulates the actual loading environment;

[0022] d. again capturing the actual position of the first measuring point on the product by the first capturing device, and capturing the actual position of the third measuring point on the product by the third capturing device;

[0023] e. The data is transmitted to the PLC terminal to complete the calculation and displayed on the touch screen: if the offset distance between the first measuring point and the third measuring point is within the tolerance range, the product is qualified and the green value is displayed; if it is beyond the tolerance range, the product is unqualified and the red value is displayed;

[0024] f. Quality inspectors complete data recording work.

[0025] Furthermore, in step b, before measuring the product, the calibration piece is installed to the corresponding position of the inspection fixture, and the precise positions of the first measuring point and the third measuring point on the calibration piece are captured through the cooperation of the first capturing device and the third capturing device, and the zeroing operation is completed on the touch display.

[0026] Furthermore, in step c, the product positioning reference is matched with the inspection fixture positioning structure, and the product is installed on the inspection fixture.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention arranges four capturing devices on the environmental simulation part: a first capturing device, a second capturing device, a third capturing device and a fourth capturing device, which respectively correspond to the positions of the first measuring point, the second measuring point, the third measuring point and the fourth measuring point. The displacement sensor, the cross laser positioning light and the bidirectional slide rail micrometer cooperate with each other, and the offset of the cross laser positioning light mark is accurately input into the PLC terminal (touch display) through the displacement sensor for calculation, and the offset is obtained to determine whether the offset distance of the mark point is qualified. The structure is novel, the measurement is accurate, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of an example of the European guide groove to be tested.

[0030] Figure 2 It is a structural schematic diagram of the present invention.

[0031] Figure 3 It is a schematic diagram of the structure of the environmental simulation component of the present invention.

[0032] Figure 4 It is a schematic diagram of the structure of the capture device of the present invention.

[0033] Among them: first measuring point 1, second measuring point 2, third measuring point 3, fourth measuring point 4, bracket 5, substrate 6, environmental simulation part 7, first capture device 8, L-shaped slide rail 8.1, displacement sensor 8.2, two-way slide rail micrometer 8.3, calibration part 8.4, cross laser positioning light 8.5, second capture device 9, third capture device 10, fourth capture device 11, touch display 12. DETAILED DESCRIPTION

[0034] In order to better understand the technical solution of the present invention, the following will be described in detail in conjunction with the relevant illustrations. It should be understood that the following specific embodiments are not intended to limit the specific implementation of the technical solution of the present invention, and are only implementations that can be adopted by the technical solution of the present invention. It should be noted that the description of the positional relationship of each component in this article, such as component A being located above component B, is based on the description of the relative positions of the components in the illustration, and is not intended to limit the actual positional relationship of the components.

[0035] Embodiment 1:

[0036] See also Figure 1 , Figure 1 A schematic diagram of an example of the European guide groove to be measured is drawn. There are four measuring points on the car window: the first measuring point 1, the second measuring point 2, the third measuring point 3 and the fourth measuring point 4. The first measuring point 1 and the third measuring point 3 are set at the two ends of the vertical side of the right angle side of the car window, and the direction of the line between the first measuring point 1 and the third measuring point 3 is the Y direction. The second measuring point 2 and the fourth measuring point 4 are set at the two ends of the horizontal side of the right angle side of the car window, and the direction of the line between the second measuring point 2 and the fourth measuring point 4 is the X direction.

[0037] See also Figure 2-4 , Figure 2 The structural schematic diagram of the present invention is drawn. As shown in the figure, a measuring and checking fixture for a European-style guide groove of an automobile of the present invention comprises a bracket 5, a base plate 6, an environmental simulation part 7, four capture devices and a touch display 12. A base plate 6 is provided on the bracket 5, a support is fixedly connected to the bottom of the bracket 5, and a rolling wheel is provided at each of the four corners of the bottom of the bracket 5. The rolling wheels and the support at the bottom of the bracket 5 are convenient for movement and fixed placement;

[0038] The environment simulation member 7 is fixedly connected to the substrate 6, and four capture devices are provided on the environment simulation member 7: a first capture device 8, a second capture device 9, a third capture device 10 and a fourth capture device 11, which correspond to the positions of the first measurement point 1, the second measurement point 2, the third measurement point 3 and the fourth measurement point 4 respectively;

[0039] The capture device includes an L-shaped slide rail 8.1, a displacement sensor 8.2, a bidirectional slide rail micrometer 8.3, a calibration piece 8.4 and a cross laser positioning light 8.5. The L-shaped slide rail 8.1 includes an integrally formed sensor plate and a laser plate. A horizontal plate is provided at the end of the sensor plate for fixing on a base plate 6. A displacement sensor 8.2 and a bidirectional slide rail micrometer 8.3 are provided on the sensor plate. The displacement sensor 8.2 is fixed on the base of the bidirectional slide rail micrometer 8.3. A cross laser positioning light 8.5 is provided at the end of the laser plate. A calibration piece 8.4 is also provided on the laser plate.

[0040] A touch display 12 is disposed above the bracket 5 .

[0041] Environmental simulation part 7: Necessary simulation structure of environmental inspection fixture, used to simulate the actual loading environment of door sheet metal, trim, etc.

[0042] Displacement sensor 8.2: can read the offset of the mark point and transmit it to the touch display 12 (PLC terminal) for calculation;

[0043] Bidirectional slide micrometer 8.3: A measuring tool with an accuracy of 1 / 1000mm. Through manual adjustment, the measurement values ​​in two orthogonal directions can be adjusted, which can effectively enable the cross laser positioning light to accurately capture the actual position of the mark point;

[0044] Calibration piece 8.4: Accurately simulate the theoretical position of the mark point. When the cross cursor captures the position of the mark point on the calibration piece, operate the zeroing operation on the display;

[0045] Cross laser positioning light 8.5: A cross infrared laser light, which can accurately capture the actual position of the mark point when used with a fine-tuning micrometer;

[0046] Touch display 12: A display that can be operated by touch and has PLC calculation functions, which can record measurement data separately and independently.

[0047] Working principle:

[0048] The displacement sensor 8.2, the cross laser positioning light and the 8.5 two-way slide micrometer 8.3 cooperate with each other. The displacement sensor 8.2 is fixed on the base of the two-way slide micrometer 8.3 and remains relatively still with the environmental simulation part 7; the cross laser positioning light 8.5 is fixed on the two-way slide micrometer 8.3 and moves synchronously with the two-way slide micrometer 8.3. The offset of the cursor of the cross laser positioning light 8.5 is accurately input into the PLC terminal (touch display 12) through the displacement sensor 8.2 for calculation to obtain the offset.

[0049] See also Figure 1-4 , a measuring method for a measuring fixture for an automobile European guide groove, comprising the following contents:

[0050] (1) When the linear direction of the measured dimension is in the X direction (i.e., the arc dimension between the second measuring point 2 and the fourth measuring point 4), the value-taking directions of the displacement sensors 8.2 of the second capturing device 9 and the fourth capturing device 11 on both sides are arranged in the X direction;

[0051] The calibration piece 8.4 simulates the theoretical position of the mark points (the second measuring point 2 and the fourth measuring point 4): before measuring the product, the calibration piece 8.4 is installed at the corresponding position of the gauge, and the second capture device 9 and the fourth capture device 11 cooperate to capture the precise position of the mark points (the second measuring point 2 and the fourth measuring point 4) on the calibration piece, and the zeroing operation is completed on the touch display 12;

[0052] The environmental simulation part 7 simulates the actual loading environment, matches the product positioning reference with the inspection fixture positioning structure, and installs the product on the inspection fixture;

[0053] The second capture device 9 is used to capture the actual position of the second measuring point 2 on the product again, and the fourth capture device 11 captures the actual position of the fourth measuring point 4 on the product. The data is transmitted to the PLC terminal to complete the calculation and displayed on the touch display 12. If the offset distance between the second measuring point 2 and the fourth measuring point 4 is within the tolerance range, the product is qualified and a green value is displayed. If it exceeds the tolerance range, the product is unqualified and a red value is displayed. Finally, the quality inspector completes the data recording work.

[0054] (2) When the linear direction of the measured dimension is in the Y direction (i.e., the arc dimension between the first measuring point 1 and the third measuring point 3), the value-taking directions of the displacement sensors 8.2 of the first capture device 8 and the third capture device 10 on both sides are arranged in the Y direction.

[0055] The calibration piece 8.4 simulates the theoretical position of the mark points (the first measuring point 1 and the third measuring point 3): before measuring the product, the calibration piece 8.4 is installed at the corresponding position of the gauge, and the first capture device 8 and the third capture device 10 cooperate to capture the precise position of the mark points (the first measuring point 1 and the third measuring point 3) on the calibration piece, and the zeroing operation is completed on the touch display 12;

[0056] The environmental simulation part 7 simulates the actual loading environment, matches the product positioning reference with the inspection fixture positioning structure, and installs the product on the inspection fixture;

[0057] The actual position of the first measuring point 1 on the product is captured again by the first capturing device 8, and the actual position of the third measuring point 3 on the product is captured by the third capturing device 10. The data is transmitted to the PLC terminal for calculation and displayed on the touch display 12. If the offset distance between the first measuring point 1 and the third measuring point 3 is within the tolerance range, the product is qualified and a green value is displayed. If it exceeds the tolerance range, the product is unqualified and a red value is displayed. Finally, the quality inspector completes the data recording work.

[0058] The linear dimensions in different directions on the same set of inspection fixtures can be operated simultaneously when the calibration piece and the capture device are used for zeroing operation, and all values ​​can be measured at one time, which greatly reduces the operation time.

[0059] The above are only specific application examples of the present invention and do not constitute any limitation on the protection scope of the present invention. Any technical solution formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the present invention.

Claims

1. A measuring fixture for a European-style guide groove of an automobile, wherein four measuring points are arranged on the window: a first measuring point, a second measuring point, a third measuring point and a fourth measuring point, wherein the first measuring point and the third measuring point are arranged at both ends of the vertical side of the right-angle side of the window, and the direction of the line between the first measuring point and the third measuring point is the Y direction, and the second measuring point and the fourth measuring point are arranged at both ends of the horizontal side of the right-angle side of the window, and the direction of the line between the second measuring point and the fourth measuring point is the X direction, characterized in that: It includes a bracket, a base plate, an environmental simulation piece, four capture devices and a touch display. The bracket is provided with a base plate. The environmental simulation piece is fixedly connected to the base plate. The environmental simulation piece is provided with four capture devices: a first capture device, a second capture device, a third capture device and a fourth capture device, which correspond to the positions of a first measuring point, a second measuring point, a third measuring point and a fourth measuring point respectively. The capture device includes an L-shaped slide rail, a displacement sensor, a bidirectional slide rail micrometer, a calibration piece and a cross laser positioning light. A displacement sensor and a bidirectional slide rail micrometer are provided on one side of the L-shaped slide rail, and a cross laser positioning light and a calibration piece are provided on the other side. A touch display is provided above the bracket. The L-shaped slide rail includes an integrally formed sensor plate and a laser plate. A horizontal plate is provided at the end of the sensor plate for fixing on the base plate. A displacement sensor and a bidirectional slide rail micrometer are provided on the sensor plate. The displacement sensor is fixed on the base of the bidirectional slide rail micrometer. A cross laser positioning light is provided at the end of the laser plate, and a calibration piece is also provided on the laser plate.

2. The measuring fixture for the European guide groove of an automobile according to claim 1, characterized in that: The bottom of the bracket is fixedly connected with a pillar, and four corners of the bottom of the bracket are respectively provided with a rolling wheel.

3. A measuring method for a measuring fixture for an automobile European guide groove according to claim 1, characterized in that: Includes the following: a. When the linear direction of the measurement dimension is in the X direction, the displacement sensors of the second capture device and the fourth capture device on both sides are arranged in the X direction; b. The calibration piece simulates the theoretical positions of the second measuring point and the fourth measuring point; Before measuring the product, the calibration piece is installed to the corresponding position of the gauge, and the precise positions of the second measuring point and the fourth measuring point on the calibration piece are captured through the cooperation of the second capturing device and the fourth capturing device, and the zeroing operation is completed on the touch display; c. The environmental simulation part simulates the actual loading environment; the product positioning reference is matched with the inspection fixture positioning structure, and the product is installed on the inspection fixture; d. again capturing the actual position of the second measuring point on the product by the second capturing device, and capturing the actual position of the fourth measuring point on the product by the fourth capturing device; e. The data is transmitted to the PLC terminal to complete the calculation and displayed on the touch screen: if the offset distance between the second measuring point and the fourth measuring point is within the tolerance range, the product is qualified and the green value is displayed; if it is beyond the tolerance range, the product is unqualified and the red value is displayed; f. Quality inspectors complete data recording work.

4. A measuring method for a measuring fixture for an automobile European guide groove according to claim 1, characterized in that: Includes the following: a. When the linear direction of the measurement dimension is in the Y direction, the displacement sensors of the first capture device and the third capture device on both sides are arranged in the Y direction; b. The calibration piece simulates the theoretical positions of the first measuring point and the third measuring point; Before measuring the product, the calibration piece is installed to the corresponding position of the gauge, and the precise positions of the first measuring point and the third measuring point on the calibration piece are captured through the cooperation of the first capturing device and the third capturing device, and the zeroing operation is completed on the touch display; c. The environmental simulation part simulates the actual loading environment; the product positioning reference is matched with the inspection fixture positioning structure, and the product is installed on the inspection fixture; d. again capturing the actual position of the first measuring point on the product by the first capturing device, and capturing the actual position of the third measuring point on the product by the third capturing device; e. The data is transmitted to the PLC terminal to complete the calculation and displayed on the touch screen: if the offset distance between the first measuring point and the third measuring point is within the tolerance range, the product is qualified and the green value is displayed; if it is beyond the tolerance range, the product is unqualified and the red value is displayed; f. Quality inspectors complete data recording work.

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