CN114077223A

CN114077223A - A machining method for automatic measurement and compensation of complex turning profile of casing

Info

Publication number: CN114077223A
Application number: CN202111339053.2A
Authority: CN
Inventors: 栗生锐; 周代忠; 刘德生; 郝卓
Original assignee: AECC Shenyang Liming Aero Engine Co Ltd
Current assignee: AECC Shenyang Liming Aero Engine Co Ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-02-22

Abstract

A method for automatically measuring and compensating the complex turning profile of a casing, the specific steps are as follows: measure the profile of a part that has been processed with a special measuring tool, record the offset value of the difference in the offset, record it into a custom parameter, and use it as a measurement Calibration value; Compile signal-based parameterized online measurement program; execute measurement cycle program, automatically record measurement results into user-defined parameters, as the standard value for comparison measurement; normally process parts, automatically execute measurement cycle program after machining, and measure The results are automatically recorded in the self-defined parameters; the actual profile data is obtained by comparing the measurement parameters with the theoretical parameters; the measurement data is logically judged, and the parts that meet the conditions are qualified and the subsequent processing is automatically performed. The invention has the advantages that the problems of long three-coordinate detection cycle and many manual measurements of the complex turning profile of the engine casing, inability to realize automatic processing and error-prone problems are solved. The stability and consistency of the casing products are guaranteed.

Description

Automatic measurement compensation machining method for complex turning profile of cartridge receiver

Technical Field

The invention relates to the field of machining, in particular to an automatic measurement compensation machining method for a complex turning profile of a cartridge receiver

Background

With the continuous improvement of requirements of engine parts on the stability and consistency of products, as a core component of an engine, namely a casing, the automatic machining and the whole process control become necessary, whether the complex turning profile of the casing can realize automatic measurement and machining is very important, the key for realizing the automatic machining of typical family parts of the casing is realized, manual measurement cannot meet the requirements of automatic machining, the stability and consistency of the products cannot be guaranteed, the three-coordinate detection period is long, and the requirements of process control are not met. The method for rapidly and automatically detecting and compensating the complex turning profile of the cartridge receiver can reduce the manufacturing of a special measuring tool and the occupation of three-coordinate equipment, shorten the development and production period of the parts, realize process control, improve the automatic processing rate and have wide application prospect.

Disclosure of Invention

The invention aims to solve the problems that the complex turned surface of an engine case has long three-coordinate detection period and many manual measurement times, cannot realize automatic processing and is easy to make mistakes. By adopting the technology to detect the casing profile, the occupation time of three-coordinate equipment can be shortened, the detection efficiency of the complicated turned profile of the casing is improved, automatic measurement and automatic compensation processing are realized, the risk of human error is avoided, and the automatic measurement compensation processing method for the complicated turned profile of the casing is particularly provided

The invention provides an automatic measurement compensation processing method for a complex turning profile of a cartridge receiver, which is characterized by comprising the following steps of: the automatic measurement compensation machining method for the complex turning profile of the casing comprises the following specific steps:

firstly, calibrating a special measuring tool by using a special standard part, measuring the molded surface of the machined qualified part by using the special measuring tool, recording an offset value of the deviation, and recording the offset value into a self-defined parameter as a measurement calibration value;

secondly, a parameterized online measurement program based on signals is compiled, a measurement path is along the normal direction of a profile, a measurement reference plane selects a surface with the special measurement tool reference superposed with the part reference, and points on the section of the part are selected by the profile points;

thirdly, executing a measurement cycle program, and automatically recording the measurement result into a user-defined parameter as a standard value for comparison measurement;

fourthly, processing the parts normally, automatically executing a measurement cycle program after processing, and automatically recording the measurement result into the user-defined parameters;

fifthly, the measured parameters are compared with the theoretical parameters to obtain actual profile data, so that the purpose of automatic measurement is achieved.

And logically judging the measurement data, automatically executing subsequent processing when the part meets the condition of being qualified, automatically modifying the tool compensation if the part is unqualified, and automatically transferring to the fourth step for circular processing until the molded surface of the part is qualified.

The invention has the advantages that:

the automatic measurement compensation processing method for the complex turning profile of the engine case solves the problems that the complex turning profile of the engine case has long three-coordinate detection period and many manual measurement times, cannot realize automatic processing and is easy to make mistakes. By adopting the technology to detect the casing profile, the occupation time of three-coordinate equipment can be shortened, the detection efficiency of the casing profile is improved, automatic measurement and automatic compensation processing are realized, and the risk of human errors is avoided, so that the automatic measurement and automatic compensation processing of the casing part profile are realized, and the stability and consistency of a casing product are ensured. Through field test, compared with a manual standard part measuring method, the method has the advantages that the error is not larger than 0.02mm, the error can be eliminated through a manual experience method in a compensation mode, the using effect is obvious, and manual measuring and processing can be completely replaced.

Drawings

The invention is described in further detail below with reference to the following figures and embodiments:

FIG. 1 is a partial schematic view of a front case finish turning profile design requirement;

FIG. 2 is a first flowchart;

FIG. 3 is a flow chart II.

Detailed Description

Examples

The embodiment provides an automatic measurement compensation machining method for a complex turning profile of a casing, which is characterized by comprising the following steps of: the automatic measurement compensation machining method for the complex turning profile of the casing comprises the following specific steps:

The invention is not the best known technology.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. an automatic measurement compensation processing method for the complex turning profile of a casing, it is characterized in that: the automatic measurement compensation processing method for the complex turning profile of the casing, concrete steps are as follows:

First, use the special standard to calibrate the special measuring tool, use the special measuring tool to measure the qualified part profile, record the offset value of the difference in the offset, and record it in the custom parameters as the measurement calibration value;

Second, compile a signal-based parametric online measurement program, the measurement path is along the normal direction of the profile, the measurement datum plane selects the surface where the special measuring tool datum coincides with the part datum, and the profile point selects the point on the section of the part;

Third, execute the measurement cycle program, and automatically record the measurement results into the self-defined parameters as the standard value for comparison measurement;

Fourth, the parts are processed normally, and the measurement cycle program is automatically executed after processing, and the measurement results are automatically recorded in the custom parameters;

Fifth, the actual profile data is obtained by comparing the measured parameters with the theoretical parameters, and the purpose of automatic measurement is realized.

2. The method for automatically measuring and compensating for a complex turning profile of a casing according to claim 1, characterized in that: the measurement data is logically judged, and the parts that meet the conditions are qualified to automatically execute subsequent processing, and if unqualified, the tool compensation is automatically adjusted and rotated. Go to the fourth step to cycle processing until the part surface is qualified.