Multi-source error analysis method in multi-process mechanical manufacturing process

A technology of mechanical manufacturing and analysis methods, applied in the direction of program control, computer control, general control system, etc., capable of solving problems such as complex structures

Inactive Publication Date: 2021-07-06
BAOJI UNIV OF ARTS & SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Modern mechanical parts generally have complex structures, which show typical multi-process manufacturing characteristics in production, but this also poses challenges to the quality control of the production process

Method used

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  • Multi-source error analysis method in multi-process mechanical manufacturing process
  • Multi-source error analysis method in multi-process mechanical manufacturing process
  • Multi-source error analysis method in multi-process mechanical manufacturing process

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Embodiment Construction

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0042] A method for analyzing multi-source errors in a multi-process mechanical manufacturing process, comprising the following steps:

[0043] Step 1: Multi-source error analysis

[0044] Conduct an inductive analysis of the types of potential errors that may occur in the multi-process complex manufacturing process of mechanical parts, including fixture errors, workpiece positioning errors, tool errors, and process system deformation errors (which are caused by factors such as cutting force and rigidity of the tool), Identify sources of error. Specifically, multi-source error analysis requires testing equipment to measure the actual values ​​of position, size, and geometry, and compare them with theoretical values...

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Abstract

The invention discloses a multi-source error analysis method in a multi-process mechanical manufacturing process. The method comprises the steps of multi-source error analysis, error transmission accumulation analysis and multi-source error propagation influence analysis. An effective basis can be preliminarily provided for application work such as error traceability, error propagation monitoring, error compensation and resolution and the like in a multi-process manufacturing process. A principle comprises the following steps: firstly, carrying out modeling on a process processing state in a manufacturing feature level, and analyzing a multi-source error type executed along with a process and an action form of the multi-source error; secondly, constructing an error transfer model of multi-source errors along with process conversion based on a state space theory, and realizing mathematical calculation of error transfer accumulation; and finally, introducing a link graph and a link matrix to analyze the propagation influence of the multi-source error along with the multi-process manufacturing process, overcoming a defect that a state space model cannot explicitly describe an error propagation path and range, and providing a feasible basis for error traceability and adoption of targeted error elimination measures.

Description

technical field [0001] The invention relates to the field of error analysis in multi-process machining of mechanical parts, in particular to an analysis method for multi-source errors in the multi-process mechanical manufacturing process. Background technique [0002] Since the founding of New China, China's manufacturing industry has achieved world-renowned development achievements, but with the strategic transformation and upgrading from "Made in China" to "Created in China", large aircraft, manned spaceflight devices, industrial robots, high-end CNC machine tools, etc. Precision industries and their industrial products put forward higher expectations for production and processing precision. At the same time, product manufacturing quality is a key factor for enterprises to maintain competitiveness and achieve sustainable development in the face of increasingly fierce market competition. Therefore, it is imperative and timely to improve the quality of mechanical manufacturi...

Claims

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Application Information

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IPC IPC(8): G05B19/404
CPCG05B19/404G05B2219/31434
Inventor 李春磊王肖烨李亮
Owner BAOJI UNIV OF ARTS & SCI
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