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Thin-wall multi-cavity component processing characteristic identification method based on cavity grouping and characteristic suppression

A technology for processing features and feature recognition, applied in three-dimensional object recognition, character and pattern recognition, computer parts and other directions, can solve the problems of low recognition efficiency, low efficiency, cumbersome intersection feature recognition process, etc., to improve recognition efficiency, simplify The effect of recognition

Active Publication Date: 2017-03-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of low recognition efficiency in the feature recognition process of thin-walled multi-cavity structural parts, and to invent a processing feature recognition method for thin-walled multi-cavity structural parts based on cavity grouping and feature suppression. The problem of cumbersome feature recognition process and low efficiency

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  • Thin-wall multi-cavity component processing characteristic identification method based on cavity grouping and characteristic suppression
  • Thin-wall multi-cavity component processing characteristic identification method based on cavity grouping and characteristic suppression
  • Thin-wall multi-cavity component processing characteristic identification method based on cavity grouping and characteristic suppression

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[0042] Below in conjunction with accompanying drawing and example the present invention will be further described:

[0043] Such as Figure 1-12 shown.

[0044] A processing feature recognition method for thin-walled multi-cavity structural parts based on cavity grouping and feature suppression, comprising the following steps:

[0045] Step (1): Suppress the transitional features of a given thin-walled multi-cavity structure to obtain a simplified three-dimensional model of the thin-walled multi-cavity structure ( figure 1 ), the whole recognition process is as follows figure 2 As shown, the flow chart of chamber grouping is as follows image 3 As shown, the flow chart of the main processing surface grouping is as follows Figure 4 shown.

[0046] Step (2): Obtain the main processing surface set: Since the recognition process of the front and back of the double-sided frame is consistent, the single-sided recognition process is given in the example. Specify the web face ...

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Abstract

A thin-wall multi-cavity structure component processing characteristic identification method based on cavity grouping and characteristic suppression is disclosed. The method is characterized by using a cavity grouping technology to segment a model, and carrying out parallel identification on a processing characteristic so that identification efficiency is increased; and using a characteristic suppression technology to directly carry out modeling operation on the model so as to realize identification of an intersection characteristic, according to an intersection characteristic type and feasibility of three-dimensional modeling, arranging an identification sequence, and after the identification is completed, acquiring a blank model. Because characteristic data in each cavity is mutually independent, by using the method of the invention, identification efficiency of the processing characteristic can be increased. In the invention, according to the intersection characteristic type and the feasibility of three-dimensional modeling, the identification sequence is arranged; and through the modeling operation which is directly performed on a three-dimensional model, an identified characteristic is suppressed from the three-dimensional model, and topology information receiving destructions is automatically restored so as to simplify identification of the intersection characteristic.

Description

technical field [0001] The invention belongs to the field of computer-aided design, and relates to a processing feature recognition method for thin-walled multi-cavity structural parts, specifically a multi-task parallel recognition with a cavity as a unit, according to the intersection feature type and the feasibility arrangement of three-dimensional modeling Recognition sequence, a method for simplifying intersection feature recognition by feature suppression, this inventive method can effectively improve the efficiency of feature recognition for processing thin-walled multi-cavity structural parts. Background technique [0002] Thin-walled multi-cavity structural parts are a common type of overall structural parts in modern aircraft development, and generally have the characteristics of large number of processing features, thin walls, and multi-cavities. In the current CNC machining process of thin-walled multi-cavity structural parts, a large number of manual feature sel...

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Application Information

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IPC IPC(8): G06K9/00G06K9/46G06K9/62G06T17/00G06T19/20G06F17/50
CPCG06T17/00G06T19/20G06F30/15G06F30/20G06V20/64G06V10/44G06F18/22
Inventor 张丹魏涛左敦稳夏三星
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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