Detection method suitable for optical measurement tool

Abstract

The invention discloses a detection method suitable for an optical measurement tool, and the method comprises the steps: building a theoretical data model through the measurement tool, building an actual data model according to the theoretical data model, carrying out the actual measurement through a three-coordinate measuring machine, and determining whether the data is qualified or not according to the data obtained through the actual measurement. According to the detection method, the three-coordinate measuring machine is utilized, and the configured tool plate and the measuring ball are arranged, so that the bottleneck that an optical measuring tool of the laser tracker cannot detect is solved, the range of installation and use tools of the laser tracker is widened, the monopoly of the optical measuring tool is broken, the detection purpose is achieved, and the detection efficiency is improved. Therefore, the method is suitable for popularization and application.

Description

Technical Field

[0001] The present invention relates to the technical field of tool measurement, and in particular to a detection method suitable for optical measuring tools. Background Art

[0002] Laser tracker is a three-dimensional optical coordinate measuring instrument composed of laser interference, rangefinder and two mutually perpendicular angular encoders. Laser tracker is an instrument that realizes measurement by the principles of light reflection, light interference and photoelectric signal conversion. It uses laser to track the target reflector and determines the coordinates of the space point through its own angle measurement system and laser rangefinder system, thus realizing the complete measurement process. Its measurement accuracy can reach up to 10um. As laser tracker is the most accurate portable large-scale space coordinate measuring system developed in recent years, the system has the advantages of large measurement range, high accuracy, real-time fast speed and dynamic flexibility, and has been widely used in the fields of parts processing and manufacturing, large-scale equipment installation and commissioning and reverse engineering.

[0003] In the actual application process, since the optical measuring tools used for the installation of laser trackers are provided by the manufacturer, they need to be purchased as equipment accessories. With the advancement of scientific and technological modernization, the specifications of the accessories that come with the original equipment in various industries can no longer meet the current use needs. At the same time, during the long-term application process, if the configured measuring tool is damaged, it can only be used after purchasing a new measuring tool from the manufacturer. At present, each user unit has begun to try to design and manufacture measuring tools on their own, but the design is completed and a ball socket is set on the top of the optical measuring tool. There is no measurement reference. Conventional measurement methods cannot be used to directly detect whether the processed product meets the requirements. Therefore, it is very necessary to determine whether the processed measuring tool meets the requirements and provide a convenient measurement method. Summary of the invention

[0004] The technical problem to be solved by the present invention is to address the problems existing in the background technology. In order to conveniently determine whether the processed measuring tool meets the use requirements, a detection method with a simple structure and easy operation is provided. The existing three-coordinate measuring machine is used for measurement, which can solve the problem of being unable to perform detection directly, thereby improving work efficiency. Specifically, it is a detection method suitable for optical measuring tools.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a detection method suitable for optical measuring tools, the detection method first establishes a theoretical data model through the measuring tool, then establishes an actual data model based on the theoretical data model, and finally performs actual measurement through a three-coordinate measuring machine, and determines whether it is qualified based on the data obtained from the actual measurement, which specifically includes the following steps: S1. Use the processed measuring tool to establish a digital model of the measuring tool, thereby obtaining the model coordinates of the measuring tool; S2. According to the digital model of the measuring tool, establish the reference axis and reference plane of the tool plate required for measurement and detection, establish a data model according to the reference axis and reference plane, and finally determine the processing module according to the data model; S3. According to the processing module determined in step S2, a tool plate configured for detection is processed, and a measuring ball matching the measuring tool is also required; S4. Fix the tool plate of step S3 on the measuring platform of the coordinate measuring machine, then place the measuring tool on the tool plate, and finally place the measuring ball in the ball socket of the measuring tool; S5. Start the three-dimensional coordinate measuring machine, use the three-dimensional coordinate measuring machine to first measure the measuring tool to obtain the actual measurement data of the measuring tool, then measure the center of the measuring ball as the reference point to obtain the actual measurement data of the center of the measuring ball, and finally form the report data; S6. Analyze the report data obtained in step S5 to determine whether the processed measuring tool is qualified.

[0006] Furthermore, using the detection method suitable for optical measurement tools described in the present invention, in the process of determining the processing module in step S2, an actual data model is first established based on the reference axis and the reference plane, and then an actual measurement coordinate system is established based on the actual data model, and the actual measurement coordinate system is required to be aligned with the coordinate system of the model coordinates, and finally the processing module is determined based on the actual measurement coordinate system.

[0007] Furthermore, using the detection method for optical measuring tools described in the present invention, in the process of fixing the tool plate in step S4, a measuring standard block used in conjunction with the three-dimensional coordinate measuring machine is first placed on the measuring platform, and then the tool plate is fixed on the measuring standard block.

[0008] Furthermore, a detection method suitable for optical measuring tools described in the present invention is adopted. During the measurement process of step S5, a measurement reference plane is determined in advance, and the reference plane is the top plane of the tool plate. After the reference plane is determined, the measuring tool is first measured to obtain a height value from the measuring tool to the reference plane. Then, the measurement is performed with the center of the measuring ball as the reference point to obtain a height value from the center of the measuring ball to the reference plane. Finally, report data is generated.

[0009] Furthermore, by adopting the detection method suitable for optical measuring tools described in the present invention, in the report data analysis process of step S6, the actual measurement data of the center of the measuring ball is compared with the actual measurement data of the measuring tool, and the processing and manufacturing tolerance of the measuring tool is judged according to the numerical value between the two, thereby determining whether the processed measuring tool is qualified.

[0010] Furthermore, a detection method suitable for an optical measuring tool described in the present invention is adopted, the tool plate is configured as a cubic structure, and a plurality of supporting holes with different apertures are provided in the tool plate, and the measuring tool is detachably connected to the tool plate through the supporting holes.

[0011] Compared with the prior art, the detection method for optical measuring tools described in the present invention has the following beneficial effects: by configuring the tool plate and measuring ball, using the existing three-coordinate measuring machine, and establishing a measuring tool model, first determine the tool plate model and the theoretical point model of the ball center after the measuring ball is seated on the measuring tool, then determine the reference axis and the reference surface, then process the tool plate for support, and select the corresponding measuring ball, then use the three-coordinate measuring machine to collect the measurement theoretical data reference, establish the actual reference based on the collected data, and finally use the three-coordinate measuring machine to perform actual measurement and detection using the actual reference, so as to determine whether the processed product meets the use requirements, solve the problem that the measuring tool cannot be detected due to the lack of a reference, and realize the processing and detection capability of the optical measuring tool.

[0012] It can be seen that the detection method described in the present invention, using a three-coordinate measuring machine, through the configured tool plate and measuring ball, solves the bottleneck that the laser tracker optical measurement tool cannot detect, broadens the scope of laser tracker installation and use tools, breaks the monopoly of optical measurement tools, not only achieves the purpose of detection, but also reduces procurement costs, and is suitable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0014] Figure 1 It is a schematic diagram of the working principle structure of the detection method of the present invention.

[0015] As shown in the figure: 1- measuring tool, 2- measuring ball, 3- tool plate, 4- measuring standard block, 5- measuring platform. DETAILED DESCRIPTION

[0016] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] like Figure 1As shown, the present invention provides a detection method suitable for optical measuring tools. Since the optical measuring tool manufactured after processing has a ball socket and has no reference surface, it cannot be directly detected. It can only be detected by establishing a theoretical data model, and then building an actual model based on the theoretical data model, and detecting whether it is qualified by the difference between the actual model and the theoretical model. Specifically, the following steps are included: S1. Using the processed measuring tool 1, establish a digital model of the measuring tool, thereby obtaining the model coordinates of the measuring tool 1; S2. According to the digital model of the measuring tool, establish the reference axis and reference plane of the tool plate 3 required for measuring and testing, establish a data model based on the reference axis and reference plane, and finally determine the processing module based on the data model; S3. According to the processing module determined in step S2, a tool plate 3 configured for detection is processed, and a measuring ball 2 matching the measuring tool 1 is also required; S4. Fix the tool plate 3 of step S3 on the measuring platform of the coordinate measuring machine, then place the measuring tool 1 on the tool plate 3, and finally place the measuring ball 2 in the ball socket of the measuring tool 1; S5. Start the three-dimensional coordinate measuring machine, use the three-dimensional coordinate measuring machine to first measure the measuring tool 1 to obtain the actual measurement data of the measuring tool 1, then measure the center of the measuring ball 2 as the reference point to obtain the actual measurement data of the center of the measuring ball 2, and finally form the report data; S6. Analyze the report data obtained in step S5 to determine whether the processed measuring tool 1 is qualified.

[0018] In the specific detection process, first, an actual data model is established according to the reference axis and the reference plane, and then an actual measurement coordinate system is established according to the actual data model, and the actual measurement coordinate system is required to be aligned with the coordinate system of the model coordinates, and finally the processing module is determined according to the actual measurement coordinate system; second, in the process of fixing the tool plate 3, a measurement standard block 4 used in conjunction with the three-dimensional coordinate measuring machine is first placed on the measurement platform, and then the tool plate 3 is fixed on the measurement standard block 4; third, in the ground measurement process, it is necessary to determine the measurement reference plane in advance, and the reference plane is the top plane of the tool plate 3. When the reference plane is determined, the measuring tool 1 is first measured to obtain the height value of the measuring tool 1 to the reference plane, and then the center of the measuring ball 2 is used as the reference point for measurement to obtain the height value of the center of the measuring ball 2 to the reference plane, and finally the report data is formed; fourth, in the process of analyzing the report data, the actual measurement data of the center of the measuring ball 2 is compared with the actual measurement data of the measuring tool 1, and the processing and manufacturing tolerance of the measuring tool 1 is judged according to the value between the two, so as to determine whether the processed measuring tool 1 is qualified.

[0019] Furthermore, in order to detect measuring tools 1 with different outer diameters, the tool plate 3 is configured as a cubic structure, and a plurality of supporting holes with different apertures are provided in the tool plate 3, and the measuring tool 1 is detachably connected to the tool plate 3 through the supporting holes. By pre-processing a plurality of supporting holes with different apertures in the tool plate 3, the tool plate 3 prepared by one-time processing can meet the detection requirements of measuring tools 1 with different outer diameters, which can reduce processing costs and improve detection efficiency, and there is no need to make a tool plate 3 every time a detection is performed.

[0020] According to the detection method for optical measuring tools described in the present invention, only a tool plate 3 and a measuring ball 2 need to be configured according to the newly manufactured optical measuring tool. The technician first establishes a digital model of the measuring tool 1 by processing the produced measuring tool 1, determines the model coordinates, and then establishes a tool plate model for fixing the measuring tool 1 and a theoretical point model of the center of the measuring ball 2 after it is seated on the measuring tool 1. According to the detection principle of a three-coordinate measuring machine, lines, points and surfaces in the digital model are extracted to obtain theoretical data. The technician guides the measurement worker to use the three-coordinate measuring machine to take the collected theoretical data as a benchmark and establish an actual benchmark. After the actual benchmark is established, the measurement worker uses the three-coordinate measuring machine to perform actual measurement and detection, and measures the height H from the center of the measuring ball 2 placed on the measuring tool 1 to the reference surface, and uses the height H value to check the manufacturing tolerance of the newly manufactured measuring tool 1.

[0021] It can be seen that by adopting the detection method described in the present invention and using a three-dimensional coordinate measuring machine, the bottleneck of the laser tracker optical measurement tool 1 being unable to detect is solved through the configured tool plate 3 and measuring ball 2, the scope of installation and use of laser trackers is broadened, and the monopoly of the optical measurement tool 1 is broken. Not only the detection purpose is achieved, but also the procurement cost can be reduced, which is suitable for promotion and application.

[0022] Other details of the present invention are conventional technologies known to those skilled in the art and are therefore not described in detail.

[0023] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. The above description is only a preferred implementation method of the present invention and does not limit the present invention. Any minor modifications, equivalent substitutions and improvements made according to the technical solutions of the present invention should be included in the protection scope of the technical solutions of the present invention.

Claims

1. A detection method suitable for optical measuring tools, characterized in that: The detection method is to first establish a theoretical data model through a measuring tool, then establish an actual data model based on the theoretical data model, and finally perform actual measurement through a three-coordinate measuring machine, and determine whether it is qualified based on the data obtained from the actual measurement, which specifically includes the following steps: S1. Use the processed measuring tool to establish a digital model of the measuring tool, thereby obtaining the model coordinates of the measuring tool; S2. According to the digital model of the measuring tool, establish the reference axis and reference plane of the tool plate required for measurement and detection, establish a data model according to the reference axis and reference plane, and finally determine the processing module according to the data model; S3. According to the processing module determined in step S2, a tool plate configured for detection is processed, and a measuring ball matching the measuring tool is also required; S4. Fix the tool plate of step S3 on the measuring platform of the coordinate measuring machine, then place the measuring tool on the tool plate, and finally place the measuring ball in the ball socket of the measuring tool; S5. Start the three-dimensional coordinate measuring machine, use the three-dimensional coordinate measuring machine to first measure the measuring tool to obtain the actual measurement data of the measuring tool, then measure the center of the measuring ball as the reference point to obtain the actual measurement data of the center of the measuring ball, and finally form the report data; S6. Analyze the report data obtained in step S5 to determine whether the processed measuring tool is qualified.

2. A detection method suitable for optical measuring tools according to claim 1, characterized in that : In the process of determining the processing module in step S2, the actual data model is first established according to the reference axis and the reference plane, and then the actual measurement coordinate system is established according to the actual data model. It is required that the actual measurement coordinate system is aligned with the coordinate system of the model coordinates, and finally the processing module is determined according to the actual measurement coordinate system.

3. A detection method suitable for optical measuring tools according to claim 1, characterized in that : In the process of fixing the tool plate in step S4, a measuring standard block used in conjunction with the three-dimensional coordinate measuring machine is first placed on the measuring platform, and then the tool plate is fixed on the measuring standard block.

4. A detection method suitable for optical measuring tools according to claim 1, characterized in that : In the measurement process of step S5, the measurement reference plane is determined in advance, and the reference plane is the top plane of the tool plate. When the reference plane is determined, the measuring tool is first measured to obtain the height value from the measuring tool to the reference plane, and then the center of the measuring ball is used as the reference point for measurement to obtain the height value from the center of the measuring ball to the reference plane, and finally the report data is formed.

5. A detection method suitable for optical measuring tools according to claim 1, characterized in that In the report data analysis process of step S6, the actual measurement data of the center of the measuring ball is compared with the actual measurement data of the measuring tool, and the processing and manufacturing tolerance of the measuring tool is judged according to the numerical value between the two, so as to determine whether the processed measuring tool is qualified.

6. A detection method suitable for optical measuring tools according to claim 1, characterized in that : The tool plate is configured as a cubic structure, and a plurality of supporting holes with different apertures are provided in the tool plate, and the measuring tool is detachably connected to the tool plate through the supporting holes.

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