CN110715627B - Helicopter maneuvering component-oriented three-coordinate measuring method - Google Patents
Helicopter maneuvering component-oriented three-coordinate measuring method Download PDFInfo
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- CN110715627B CN110715627B CN201911116010.0A CN201911116010A CN110715627B CN 110715627 B CN110715627 B CN 110715627B CN 201911116010 A CN201911116010 A CN 201911116010A CN 110715627 B CN110715627 B CN 110715627B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
Abstract
The invention belongs to the inspection and detection technology, and provides a helicopter moving part-oriented three-coordinate measuring method, which improves the precision and efficiency of moving part measurement and comprises the following steps: the method comprises the following steps: constructing a structural feature library of the helicopter movable component; step two: extracting structural features of helicopter movable parts to be measured; step three: identifying typical structures of helicopter movable parts; step four: fast programming of a three-coordinate measuring program of a helicopter movable part; step five: the helicopter mobile parts indirectly measure the geometrical characteristic structure; step six: defining a judgment process; step seven: generating a front program file; step eight: and generating and executing a measuring program.
Description
Technical Field
The invention belongs to the technology of inspection and detection, and relates to a three-coordinate measuring method for helicopter maneuvering parts.
Background
The structural characteristics of different types of helicopter moving parts are similar, and the machining processes of the helicopter moving parts are also similar, so that the possibility that different moving parts share a measuring program block exists for the measurement programming of the three-coordinate measuring machine. On the other hand, helicopter components have a complicated structure, and the evaluation of the quality characteristics thereof cannot be directly obtained by simple calculation of the measurement characteristics.
Disclosure of Invention
The purpose of the invention is as follows: the three-coordinate measuring method for the helicopter moving part is provided, and the measuring precision and efficiency of the moving part are improved.
The technical scheme is as follows:
a helicopter mobile component oriented three coordinate measurement method comprising:
the method comprises the following steps: constructing a structural feature library of the helicopter movable component;
step two: extracting structural features of helicopter movable parts to be measured;
step three: identifying typical structures of helicopter movable parts;
step four: fast programming of a three-coordinate measuring program of a helicopter movable part;
step five: the helicopter mobile parts indirectly measure the geometrical characteristic structure;
step six: defining a judgment process;
step seven: generating a front program file;
step eight: and generating and executing a measuring program.
The first step is specifically as follows: through the classification of the basic structure of the helicopter movable component, a helicopter movable component structure feature library is created.
The second step is specifically as follows: and under the CATIA environment, reading the three-dimensional inspection plan of the moving part, and repeatedly extracting structural features required by the measurement of the three-coordinate measuring machine of the moving part.
The third step is specifically as follows:
in the CATIA system, the topology composition of the extracted structural features of the helicopter mobile parts is scanned by calling the topology traversal function of a topology module; and matching the adjacent topological components with the structural features in the structural feature library of the helicopter maneuvering component, and identifying the structural features of the helicopter maneuvering component.
The fourth step is specifically as follows:
and instantiating and generating a measuring program executed by the three-coordinate measuring machine by using the measuring program template of the structural feature library and the identified structural feature parameters of the movable part.
The fifth step is specifically as follows: in the CATIA system, the construction of indirect measurement geometric characteristics is carried out by calling a topology operation function of a topology module.
The sixth step is specifically as follows: and introducing a plurality of judgment references to define basic parameters in the judgment process.
The seventh step is specifically as follows: and outputting the compiled three-coordinate measurement information into a formatted three-coordinate measurement pre-program file.
The eighth step specifically comprises:
the method comprises the steps of utilizing seamless integration of software and a measuring machine, directly starting the measuring software, loading a part CAD model, reading a three-coordinate measurement front file, analyzing a measurement path, measurement characteristics and a swing angle, directly generating a measurement program and sending the measurement program to the measuring machine, and measuring the helicopter moving part by the measuring machine according to the measurement range sequence.
Has the advantages that:
the method utilizes a method of a structural feature library and a program template, and improves the programming efficiency of the three-coordinate measuring machine; by using the method of constructing features and introducing multiple references, the precision and the efficiency of measuring the moving part are improved.
Detailed Description
The invention relates to a three-coordinate measuring method for helicopter maneuvering parts, which comprises the following steps:
the method comprises the following steps: helicopter movable part structure feature library construction
The basic structure of the different helicopter mobile parts is similar, and the basic geometrical and topological types of the composition can be exhaustive. Therefore, the method creates a structural feature library of the helicopter movable parts by classifying the basic structure of the helicopter movable parts;
step two: structural feature extraction requiring measurement of helicopter maneuvering components
Reading a three-dimensional inspection plan of the moving part in a CATIA environment, and repeatedly extracting structural features required by the measurement of a three-coordinate measuring machine of the moving part;
step three: helicopter maneuvering member typical structure identification
In the CATIA system, the topology composition of the extracted structural features of the helicopter maneuvering components is scanned by calling the topology traversal function of the topology module. Matching the adjacent topological composition with the structural features in the structural feature library of the helicopter maneuvering component, and identifying the structural features of the helicopter maneuvering component;
step four: quick programming of helicopter moving part three-coordinate measuring program
And instantiating and generating a measuring program executed by the three-coordinate measuring machine by using the measuring program template of the structural feature library and the identified structural feature parameters of the movable part. Compared with the traditional method, the method can greatly improve the efficiency of part measurement programming;
step five: non-direct measurement geometric characteristic structure of helicopter movable part
In the CATIA system, the construction of indirect measurement geometric characteristics is carried out by calling the topological operation function of a topological module;
the quality characteristic evaluation process of the helicopter movable component can not be completed by directly utilizing the measured geometric features to carry out simple evaluation algorithm calling, and due to the structural complexity, in order to improve the measurement precision, a complex topological operation is often carried out by means of the structure of the geometric features which are not directly measured and the geometric features which are directly measured;
step six: definition of decision process
And introducing a plurality of judgment references for reducing the extension error of the quality characteristic under a specific reference system, defining basic parameters in the judgment process and improving the judgment accuracy.
Step seven: pre-program file generation
And outputting the compiled three-coordinate measurement information into a formatted three-coordinate measurement pre-program file, thereby improving the universality of the off-line programming function of the three-coordinate measurement.
Step eight: measurement program generation and execution
The method comprises the steps of utilizing seamless integration of software and a measuring machine, directly starting the measuring software, loading a part CAD model, reading a three-coordinate measurement front file, analyzing relevant information such as a measurement path, measurement characteristics, a swing angle and the like, directly generating a measurement program and sending the measurement program to the measuring machine, and measuring the helicopter moving part by the measuring machine according to the measurement range sequence.
Claims (7)
1. A method for three-coordinate measurement of a helicopter moving part, comprising:
the method comprises the following steps: constructing a structural feature library of the helicopter movable component;
step two: extracting structural features of helicopter movable parts to be measured;
step three: identifying typical structures of helicopter movable parts;
step four: fast programming of a three-coordinate measuring program of a helicopter movable part;
step five: the helicopter mobile parts indirectly measure the geometrical characteristic structure;
step six: defining a judgment process;
step seven: generating a front program file;
step eight: generating and executing a measuring program;
the third step is specifically as follows:
in the CATIA system, the topology composition of the extracted structural features of the helicopter mobile parts is scanned by calling the topology traversal function of a topology module; matching the adjacent topological composition with the structural features in the structural feature library of the helicopter maneuvering component, and identifying the structural features of the helicopter maneuvering component;
the fourth step is specifically as follows:
and instantiating and generating a measuring program executed by the three-coordinate measuring machine by using the measuring program template of the structural feature library and the identified structural feature parameters of the movable part.
2. The method for measuring three coordinates of a helicopter moving part according to claim 1, characterized in that the first step is specifically: through the classification of the basic structure of the helicopter movable component, a helicopter movable component structure feature library is created.
3. The method for measuring the three coordinates of the helicopter moving part according to claim 1, wherein the second step is specifically as follows: and under the CATIA environment, reading the three-dimensional inspection plan of the moving part, and repeatedly extracting structural features required by the measurement of the three-coordinate measuring machine of the moving part.
4. The three-coordinate measuring method for the helicopter moving parts as claimed in claim 1, wherein the step five is specifically: in the CATIA system, the construction of indirect measurement geometric characteristics is carried out by calling a topology operation function of a topology module.
5. The three-coordinate measuring method for the helicopter moving parts as claimed in claim 1, wherein the sixth step is specifically: and introducing a plurality of judgment references to define basic parameters in the judgment process.
6. The three-coordinate measuring method for the helicopter moving parts according to claim 1, characterized by the seventh step of: and outputting the compiled three-coordinate measurement information into a formatted three-coordinate measurement pre-program file.
7. The three-coordinate measuring method for the helicopter moving parts according to claim 1, characterized in that the step eight is specifically as follows:
the method comprises the steps of utilizing seamless integration of software and a measuring machine, directly starting the measuring software, loading a part CAD model, reading a three-coordinate measurement front file, analyzing a measurement path, measurement characteristics and a swing angle, directly generating a measurement program and sending the measurement program to the measuring machine, and measuring the helicopter moving part by the measuring machine according to the measurement range sequence.
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