Casing boss channel machining method based on characteristics

Abstract

A casing boss channel machining method based on characteristics is characterized by including casing model and casing boss characteristic information, establishing a boss channel machining region automatically, selecting automatically generating or manually inputting machining process information of machined boss characteristics, and finally generating rough and fine machining tracks automatically. The method can be applied to rough and fine machining of boss channels, the cutter track calculating efficiency is high, the correct rate is high, the flexibility is high, the programming workload of engineering staffs is reduced greatly, single or batched multiple boss channels can be machined, and the different requirements of the engineering staffs can be met.

Description

technical field [0001] The invention relates to a CAM technology, in particular to a CAM technology of an aero-engine casing, in particular to a CAM processing method based on a feature extraction channel between bosses of the casing. Background technique [0002] The aero-engine is the power source of the aircraft. With the increasing thrust-to-weight ratio of the aero-engine, not only higher requirements are put forward for the structural design of the aero-engine case, but also higher challenges are put forward for the manufacture of the case. At present, the case Titanium alloys, high-temperature alloys and other high-temperature-resistant and difficult-to-cut materials are mostly used; in terms of structure, the hub surface is the main body, and the cylindrical island bosses are divided in the circumferential direction. The thinnest part of the part is only 2-3mm thick, which is a multi-island complex thin-walled structure. pieces. In the CNC machining of the casing, d...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the lack of processing mode for the channels between the bosses of the aero-engine case in the current CAM system, that is, the combination of plunge milling rough machining and layer milling finish machining, and the existing machining programming efficiency is low, the quality is poor, and the flexibility is insufficient. To solve this problem, a feature-based machining method for the channel between the bosses of the aero-engine casing is proposed. It first reads the casing model and the feature recognition results of the casing, automatically constructs the processing area of ​​the channel between the bosses, and then according to the machining resource library Data, you can choose to automatically generate or manually input the rough and finish machining process information of the channel between the machining bosses, and automatically and quickly generate the rough machining plunge milling trajectory and finishing trajectory

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