Space parameter measuring system and method for three-coordinate measuring machine

Abstract

The invention belongs to the technical field of three-coordinate measurement, and particularly discloses a space parameter measuring system and method for a three-coordinate measuring machine, the system comprises a three-coordinate measuring assembly and a quality inspection and control all-in-one machine connected with the three-coordinate measuring assembly, the three-coordinate measuring assembly comprises an X-axis substrate, a Y-axis substrate and a Z-axis vertical plate, the Z-axis vertical plate is provided with a detection base, and the X-axis substrate is provided with a detection hole; a probe is arranged at the bottom of the detection base; the quality inspection control all-in-one machine comprises a model construction module, and a control module, a coordinate conversion module, a model import module and a comparison module which are connected with the model construction module. According to the invention, the target workpiece model of the target workpiece is imported into the model construction module, the measurement parameters of the target workpiece and the target workpiece model are placed in the same three-dimensional coordinate system, and whether the contour lines coincide or not can be quickly and visually seen by comparing the contour line parameters of the target workpiece model and the target workpiece. And whether the target workpiece reaches the standard or not is obtained through threshold value comparison.

Description

Technical Field

[0001] The present application relates to a spatial parameter measurement system and method for a three-coordinate measuring machine, and belongs to the technical field of three-coordinate measurement. Background Art

[0002] With the development of industrial technology, the manufacturing of workpieces is becoming more and more automated, and the manufacturing speed and efficiency are getting higher and higher. In order to better meet the production requirements, the workpieces will be subjected to final quality inspection. The existing quality inspection method is to measure the spatial parameters of the workpiece and determine whether the workpiece meets the standards through calculation. This quality inspection method has too high technical requirements for quality inspectors, and the calculation process is cumbersome, resulting in low quality inspection efficiency.

[0003] Therefore, providing a new quality inspection system for high-precision workpieces is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] According to one aspect of the present application, a spatial parameter measurement system for a three-dimensional coordinate measuring machine is provided, comprising: A three-coordinate measurement component and a quality inspection and control integrated machine connected to the three-coordinate measurement component, wherein the three-coordinate measurement component includes an X-axis substrate, a Y-axis substrate, and a Z-axis vertical plate, wherein a detection base is provided on the Z-axis vertical plate, and a probe is provided at the bottom of the detection base; The X-axis substrate and the Y-axis substrate are slidably connected, the Z-axis vertical plate is fixedly connected to one side of the Y-axis substrate, and the detection base is slidably connected to the Z-axis vertical plate; The X-axis substrate is used to drive the probe to move along the X-axis direction, the Y-axis substrate is used to drive the probe to move along the Y-axis direction, and the detection base is used to drive the probe to move along the Z-axis; The quality inspection and control integrated machine includes a model building module and a coordinate conversion module, a model import module, a display module and a comparison module connected to the model building module; The model building module is used to build complete elements of the target artifact to form a target artifact model; The display module is used to display the measurement results; The model importing module is used to import the target workpiece model into the visible area of ​​the model building module; The coordinate conversion module is used to mark a certain feature point of the target workpiece as the coordinate origin, and perform three-dimensional coordinate conversion on the target workpiece model, so as to convert the target workpiece model and the target workpiece into the same coordinate system; The comparison module is used to compare the contour line coordinates of the target workpiece with the contour line target of the target workpiece model.

[0005] A further solution is that the quality inspection and control integrated machine further includes a control module, a statistical module and an alarm module, the control module sets a threshold value according to technical requirements; the statistical module and the alarm module are respectively connected to the control module; The statistical module is used to count the qualified rate of the target workpiece and output a quality inspection table, and the warning module is an audible and visual alarm for alarming unqualified workpieces.

[0006] A further solution is that the coordinate conversion module further includes a calibration unit for aligning the length, width and height of the target workpiece model with the X-axis, Y-axis and Z-axis of the three-dimensional coordinates.

[0007] A further solution is that the model import module at least includes: A difference acquisition unit, used for acquiring the difference between the contour line coordinates of the target workpiece model after the target workpiece model is imported into the model building module and the corresponding contour line coordinates of the target workpiece; An adjustment unit, used for adjusting the feature point coordinates of the target workpiece and the feature point coordinates corresponding to the target workpiece model to coincide with each other; The recognition and analysis unit is used to recognize and analyze the contour lines of the target workpiece model and generate corresponding coordinates in the model building module.

[0008] According to another aspect of the present application, a spatial parameter measurement method for a three-dimensional coordinate measuring machine is provided, wherein the method applies the above system; the method comprises: Importing a target workpiece model of the target workpiece into a model building module, and determining contour line coordinates of the target workpiece model in the model building module; Placing the target workpiece on the measuring platform, and adjusting the three-coordinate measuring assembly to ensure that at least one feature point of the target workpiece coincides with the coordinates of the feature point corresponding to the target workpiece model; Measure the spatial parameters of the target workpiece and determine the coordinates of each contour line of the target workpiece; The contour coordinates of the target workpiece are compared with the contour target of the target workpiece model to determine whether the target workpiece meets the standards.

[0009] A further solution is that the target workpiece is a workpiece to be tested randomly selected from workpieces produced in the same batch.

[0010] A further solution is to set a comparison threshold through the control module; during the comparison, determine whether the contour line coordinates of the target workpiece coincide with the contour line coordinates of the target workpiece model. If they coincide, the control module counts it as a qualified workpiece and outputs a quality inspection table. If they do not coincide, determine the contour line deviation value. If it is within the comparison threshold range, the control module counts it as a qualified workpiece, otherwise it is counted as an unqualified workpiece.

[0011] A further solution is that the contour line of the target workpiece is highlighted or flashed in the model building module.

[0012] The beneficial effects that the present application can produce include: the present invention imports the target workpiece model of the target workpiece into the model building module, and places the measurement parameters of the target workpiece and the target workpiece model in the same three-dimensional coordinate system. By comparing the contour line parameters of the target workpiece model and the target workpiece, it can be quickly and intuitively seen whether the target workpieces overlap, and by comparing the threshold values, it can be concluded whether the target workpieces meet the standards. The operation is simple and fast, the results are intuitive and clear, and the quality inspection efficiency of workpiece preparation is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structural connection of the present invention; Figure 2 This is the principle block diagram of the quality inspection and control integrated machine; In the figure, 1. X-axis substrate; 2. Y-axis substrate; 3. Z-axis vertical plate; 4. Measuring platform; 5. Detection base; 6. Probe; 7. Model building module; 8. Control module; 9. Coordinate conversion module; 10. Model import module; 11. Comparison module; 12. Statistics module; 13. Warning module. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution, design method and advantages of the present invention clearer, the present invention is further described in detail by specific embodiments in conjunction with the accompanying drawings. 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.

[0015] like Figure 1 and Figure 2 As shown, one aspect of the present invention provides a spatial parameter measurement system for a three-coordinate measuring machine, including: a three-coordinate measuring component and a quality inspection and control integrated machine connected to the three-coordinate measuring component, the three-coordinate measuring component at least includes an X-axis substrate 1, a Y-axis substrate 2, and a Z-axis vertical plate 3, a measuring platform 4 is arranged on the Y-axis substrate 2, a detection base 5 is arranged on the Z-axis vertical plate 3, and a probe 6 is arranged at the bottom of the detection base 5; The X-axis substrate 1 and the Y-axis substrate 2 are slidably connected, the Z-axis vertical plate 3 is fixedly connected to one side of the Y-axis substrate 2, and the detection base 5 is slidably connected to the Z-axis vertical plate 3; The X-axis substrate 1 is used to drive the probe 6 to move along the X-axis direction, the Y-axis substrate 2 is used to drive the probe 6 to move along the Y-axis direction, and the detection base 5 is used to drive the probe 6 to move along the Z-axis; The quality inspection and control integrated machine at least includes a model building module 7 and a control module 8 connected to the model building module 7, a coordinate conversion module 9, a model import module 10 and a comparison module 11; The model building module 7 is used to build the complete elements of the target workpiece and display the measurement results; The model importing module 10 is used to import the target workpiece model of the target workpiece into the visible area of ​​the model building module 7; The coordinate conversion module 9 is used to mark a certain feature point of the target workpiece as the coordinate origin, and perform three-dimensional coordinate conversion on the target workpiece model, so as to convert the target workpiece model and the target workpiece into the same coordinate system; The comparison module 11 is used to compare the contour coordinates of the target workpiece with the contour target of the target workpiece model.

[0016] In the above structure, the movable connection between the X-axis substrate 1, the Y-axis substrate 2 and the Z-axis vertical plate 3 can be realized by driving the lead screw by a motor and then driving the bolt to move, which is not limited here. The above model building module 7 is a three-coordinate software system in a three-coordinate measuring machine.

[0017] Understandably, Figure 2 The block diagram shown is for illustration only. The quality inspection and control integrated machine may also include a comparison Figure 2 More or fewer components as shown, or with Figure 2 For example, the power supply part provides power to the entire quality inspection and control integrated machine, and the power supply part is no different from the power supply in the prior art, so it is not shown in this solution. Figure 2 The components shown in the figure can be implemented by hardware, software or a combination thereof. The control module 8 can at least be a PLC controller, and the threshold value is set according to the accuracy requirement of the workpiece.

[0018] In the above, the quality inspection and control integrated machine further includes a statistical module 12 and a warning module 13, and the statistical module 12 and the warning module 13 are respectively connected to the control module 8; The statistical module 12 is used to count the qualified rate of the target workpieces and output a quality inspection table. The warning module 13 is an audible and visual alarm for alarming unqualified workpieces.

[0019] In the above, the coordinate conversion module 9 further includes a calibration unit for aligning the length, width and height of the target workpiece model with the X-axis, Y-axis and Z-axis of the three-dimensional coordinates.

[0020] In the above, the model import module 10 at least includes: A difference acquisition unit, used for acquiring the difference between the contour line coordinates of the target workpiece model after the target workpiece model is imported into the model building module 7 and the corresponding contour line coordinates of the target workpiece; An adjustment unit, used for adjusting the feature point coordinates of the target workpiece and the feature point coordinates corresponding to the target workpiece model to coincide with each other; The recognition and analysis unit is used to recognize and analyze the contour lines of the target workpiece model and generate corresponding coordinates in the model building module 7.

[0021] According to another aspect of the present application, a spatial parameter measurement method for a three-dimensional coordinate measuring machine is provided, and the method applies the spatial parameter measurement system for a three-dimensional coordinate measuring machine described above; the method comprises: importing a target workpiece model of a target workpiece into a model building module 7, and determining contour line coordinates of the target workpiece model in the model building module 7; Placing the target workpiece on the measuring platform 4, and adjusting the three-coordinate measuring assembly to ensure that at least one feature point of the target workpiece coincides with the coordinates of the feature point corresponding to the target workpiece model; Measure the spatial parameters of the target workpiece and determine the coordinates of each contour line of the target workpiece; The contour coordinates of the target workpiece are compared with the contour target of the target workpiece model to determine whether the target workpiece meets the standards.

[0022] For example, when implementing this method, on the one hand, in order to determine whether the workpiece meets the standard, on the other hand, it can also clearly point out improvement measures for the workpiece that does not meet the standard, that is, the reasons for not meeting the standard. For example, the vertices of the target workpiece model and the vertices of the target workpiece are overlapped respectively, and the contour line is divided into a first contour line, a second contour line... After the vertices are overlapped, it is determined whether the first contour line and the second contour line overlap. If there is a deviation in the first contour line after the vertices are overlapped, it is necessary to make adjustments to the position of the first contour line in the later workpiece preparation process. If it is determined that this batch of workpieces is unqualified during a quality inspection process, the vertex position of the target workpiece can also be adjusted. For example, the first contour line of the target workpiece is overlapped with the first contour line of the target workpiece model to obtain the deviation between other contour lines, which can also provide a reference for the later workpiece preparation.

[0023] Among them, adjusting the three-coordinate measurement component specifically includes adjusting the positions of the X-axis substrate 1, the Y-axis substrate 2, the Z-axis vertical plate 3 and the relative position of the detection base 5 and the Z-axis vertical plate 3, so that the vertex coordinates of the workpiece measured by the detection ball at the bottom of the probe 6 coincide with the vertex coordinates of the target workpiece model in the model construction module 7.

[0024] In the above, the target workpiece is a workpiece to be tested randomly selected from workpieces produced in the same batch.

[0025] In the above, the comparison threshold is set by the control module 8; during the comparison, it is determined whether the contour line coordinates of the target workpiece coincide with the contour line coordinates of the target workpiece model. If they coincide, the control module 8 counts them as qualified workpieces and outputs a quality inspection table. If they do not coincide, the contour line deviation value is determined. If it is within the comparison threshold range, the control module counts them as qualified workpieces, otherwise they are counted as unqualified workpieces.

[0026] In the above, the contour line of the target workpiece is highlighted or flashed in the model building module 7 .

[0027] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A spatial parameter measurement system for a three-dimensional coordinate measuring machine, characterized in that: include: A three-coordinate measurement component and a quality inspection and control integrated machine connected to the three-coordinate measurement component, wherein the three-coordinate measurement component includes an X-axis substrate, a Y-axis substrate, and a Z-axis vertical plate, wherein a detection base is provided on the Z-axis vertical plate, and a probe is provided at the bottom of the detection base; The X-axis substrate and the Y-axis substrate are slidably connected, the Z-axis vertical plate is fixedly connected to one side of the Y-axis substrate, and the detection base is slidably connected to the Z-axis vertical plate; The X-axis substrate is used to drive the probe to move along the X-axis direction, the Y-axis substrate is used to drive the probe to move along the Y-axis direction, and the detection base is used to drive the probe to move along the Z-axis; The quality inspection and control integrated machine includes a model building module and a coordinate conversion module, a model import module, a display module and a comparison module connected to the model building module; The model building module is used to build complete elements of the target artifact to form a target artifact model; The display module is used to display the measurement results; The model importing module is used to import the target workpiece model into the visible area of ​​the model building module; The coordinate conversion module is used to mark a certain feature point of the target workpiece as the coordinate origin, and perform three-dimensional coordinate conversion on the target workpiece model, so as to convert the target workpiece model and the target workpiece into the same coordinate system; The comparison module is used to compare the contour line coordinates of the target workpiece with the contour line target of the target workpiece model.

2. The spatial parameter measurement system for a three-dimensional coordinate measuring machine according to claim 1, characterized in that: The quality inspection and control integrated machine also includes a control module, a statistical module and an alarm module. The control module sets a threshold value according to technical requirements; the statistical module and the alarm module are respectively connected to the control module; The statistical module is used to count the qualified rate of the target workpiece and output a quality inspection table, and the warning module is an audible and visual alarm for alarming unqualified workpieces.

3. The spatial parameter measurement system for a three-dimensional coordinate measuring machine according to claim 2, characterized in that: The coordinate conversion module further comprises a calibration unit for aligning the length, width and height of the target workpiece model with the X-axis, Y-axis and Z-axis of the three-dimensional coordinates.

4. The spatial parameter measurement system for a three-dimensional coordinate measuring machine according to claim 3, characterized in that: The model import module at least includes: A difference acquisition unit, used for acquiring the difference between the contour line coordinates of the target workpiece model after the target workpiece model is imported into the model building module and the corresponding contour line coordinates of the target workpiece; An adjustment unit, used for adjusting the feature point coordinates of the target workpiece and the feature point coordinates corresponding to the target workpiece model to coincide with each other; The recognition and analysis unit is used to recognize and analyze the contour lines of the target workpiece model and generate corresponding coordinates in the model building module.

5. A method for measuring spatial parameters of a three-dimensional coordinate measuring machine, characterized in that: The method uses the spatial parameter measurement system for a three-dimensional coordinate measuring machine according to claim 4; comprising: Importing a target workpiece model of the target workpiece into a model building module, and determining contour line coordinates of the target workpiece model in the model building module; Placing the target workpiece on the measuring platform, and adjusting the three-coordinate measuring assembly to ensure that at least one feature point of the target workpiece coincides with the coordinates of the feature point corresponding to the target workpiece model; Measure the spatial parameters of the target workpiece and determine the coordinates of each contour line of the target workpiece; The contour coordinates of the target workpiece are compared with the contour target of the target workpiece model to determine whether the target workpiece meets the standards.

6. The spatial parameter measurement method for a three-dimensional coordinate measuring machine according to claim 5, characterized in that: The target workpiece is a workpiece to be tested randomly selected from workpieces produced in the same batch.

7. The spatial parameter measurement method for a three-dimensional coordinate measuring machine according to claim 5, characterized in that: The comparison threshold is set by the control module; during the comparison, it is determined whether the contour line coordinates of the target workpiece coincide with the contour line coordinates of the target workpiece model. If they coincide, the control module counts it as a qualified workpiece and outputs a quality inspection table. If they do not coincide, the contour line deviation value is determined. If it is within the comparison threshold range, the control module counts it as a qualified workpiece, otherwise it is counted as an unqualified workpiece.

8. The spatial parameter measurement method for a three-dimensional coordinate measuring machine according to claim 7, characterized in that: The outline of the target workpiece is highlighted or flashed in the model building module.

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