A method for precise machining of parts based on feature guidance of measured data

A technology for precise processing and actual measurement of data, applied in digital control, instruments, control/adjustment systems, etc., can solve problems such as inconvenience, time-consuming and labor-intensive, error accumulation, etc., to solve inefficient time-consuming, reasonable process planning, and improve accuracy Effect

Active Publication Date: 2020-09-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

The traditional manual reprocessing technology is time-consuming and laborious, and it is easy to cause error accumulation in the process of processing, transportation, clamping, etc., which brings great inconvenience to subsequent assembly

Method used

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  • A method for precise machining of parts based on feature guidance of measured data
  • A method for precise machining of parts based on feature guidance of measured data
  • A method for precise machining of parts based on feature guidance of measured data

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Embodiment Construction

[0043] In order to clarify the technical solution of the present invention, the present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0044] The present invention is based on the measured data feature-guided parts precision processing method, through the steps of obtaining the measured model point cloud data, data preprocessing, contour feature extraction boundary, ordered sampling and other steps, the ordered sampling results are mapped to the data model as a guide for numerical control The trajectory of machining to improve the accuracy of remachining parts with allowance.

[0045] In this embodiment, a part with a thin-walled structure is taken as an example, and the specific process of the processing method is as follows:

[0046] 1) Scan the reprocessed standard parts with a 3D laser scanner, establish a measured model, and obtain the 3D point cloud data of the measured model, which is recorded as the ...

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Abstract

The invention discloses a precise machining method for parts guided by measured data features, which includes the steps of acquiring measured model point cloud data, data preprocessing, contour feature extraction boundaries, ordered sampling, etc., and maps ordered sampling results to data The model is used as the trajectory to guide the NC machining, so as to improve the accuracy of remachining the spare parts. The precise machining method of the parts guided by the characteristics of the measured data in the present invention effectively solves the disadvantages of low efficiency and time-consuming manual reprocessing of the remaining spare parts in the traditional process, improves the precision and efficiency of the machining, and the process planning is reasonable and easy Realization, strong reproducibility, suitable for promotion and use.

Description

technical field [0001] The invention relates to the technical field of digital manufacturing, in particular to a precise machining method for parts guided by measured data features. Background technique [0002] In the molding stage of composite material parts, it is difficult to guarantee the processing accuracy of some parts. It is necessary to leave a machining allowance for the corresponding parts during manufacturing, and complete the final processing when the parts are assembled and positioned, that is, leave a machining allowance parts for reprocessing. The traditional manual reprocessing technology is time-consuming and laborious, and it is easy to cause error accumulation during processing, transportation, clamping, etc., which brings great inconvenience to subsequent assembly. [0003] Since the development of digital manufacturing technology, digital measurement technology has been playing a very important role. As processing and manufacturing move towards intel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/19
CPCG05B19/19G05B2219/34106
Inventor 汪俊陈红华韦正渊张沅
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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