阅读说明：本技术 一种面向直升机动部件的三坐标测量方法 (Helicopter maneuvering component-oriented three-coordinate measuring method ) 是由 李文琴 段桂江 艾友庆 李�城 白红超 刘睿 于 2019-11-14 设计创作，主要内容包括：本发明属于检验检测技术,提供一种面向直升机动部件的三坐标测量方法,提升动部件测量的精度和效率,包括：步骤一：直升机动部件结构特征库构建；步骤二：直升机动部件需要测量的结构物征提取；步骤三：直升机动部件典型结构识别；步骤四：直升机动部件三坐标测量程序快速编程；步骤五：直升机动部件非直接测量几何特征构造；步骤六：判定过程定义；步骤七：前置程序文件生成；步骤八：测量程序生成与执行。(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 features of structures needing to be measured of the helicopter maneuvering parts; 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.)

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 features of structures needing to be measured of the helicopter maneuvering parts;

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.

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 part as claimed in claim 1, wherein the third step is specifically:

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.

5. The three-coordinate measuring method for the helicopter moving parts as claimed in claim 1, wherein the step four is specifically:

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.

6. 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.

7. 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.

8. 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.

9. 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.

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 features of structures needing to be measured of the helicopter maneuvering parts;

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: extraction of characteristics of structures to be measured of helicopter maneuvering parts

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.