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Cavity-characteristic-based high-efficiency rough machining method of aircraft structural part

A technology for aircraft structural parts and roughing, which is applied in metal processing, metal processing equipment, metal processing mechanical parts, etc., can solve the problems of low roughing efficiency of groove features, shorten the production cycle, have strong practicability, and improve the economy. effect of benefit

Active Publication Date: 2013-02-13
SUZHOU MACHINING PRECISION ELECTRONICS
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low efficiency of the rough machining of the cavity features of the existing aircraft structural parts, and propose a method for high-efficiency rough machining of the aircraft structural parts based on the cavity features, especially the high efficiency of the cavity features of the proposed aircraft structural parts The method of automatic rough machining tool path generation uses machining features as the carrier of machining knowledge to realize the automation of tool path generation, and uses the plunging and milling method to remove rough machining materials, which greatly improves the rough machining efficiency of aircraft structural parts

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  • Cavity-characteristic-based high-efficiency rough machining method of aircraft structural part

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0044] like Figure 1-7 shown.

[0045] A high-efficiency rough machining method for aircraft structural parts based on groove cavity features, which includes the selection of machining methods and the rapid and automatic generation of rough machining tool path programs. The flow chart of the present invention is as follows figure 1 As shown, the present invention first selects NC plunge milling as the roughing method, and secondly, automatically generates the roughing tool path based on the characteristics of the cavity to save programming time and improve processing efficiency; thirdly, the generated machining tool path program Input into the CNC machine tool for mechanical rough machining.

[0046] The whole rough machining process is:

[0047] Step 1: Input part model and part feature information. The input method of the part model is to open th...

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Abstract

The invention discloses a cavity-characteristic-based high-efficiency rough machining method of an aircraft structural part, which belongs to the technical field of CAD / CAPP / CAM (Computer Aided Design / Computer Aided Process Planning / Computer Aided Manufacturing). The method is characterized by comprising the following steps of: firstly, performing preprocessing such as input of a part and read-in of characteristic information of the part; selecting characteristic of a cavity to be subjected to rough machining, automatically generating a cavity rough machining region according to information such as rough machining margin, diameter of a tool and cutting depth of the tool, and calculating a plunge milling tool site for rough machining of the cavity; and finally, generating a plunge milling rough machining track and a saw tooth residue clear track according to a set feeding strategy. By utilization of the method, rough machining of the aircraft structural part is performed, so that the rough machining efficiency of the aircraft structural part can be greatly improved, the loss of the tool is reduced, and the cost is saved. The method has great application and promotion prospect in rough machining of a difficult-to-machine material of the aircraft structural part.

Description

technical field [0001] The invention relates to a mechanical processing method, especially a rough machining method for aircraft structural parts characterized by groove cavities, specifically a method for improving programming efficiency and processing efficiency by combining plunge milling with reasonable programming. Efficient roughing method for aircraft structural parts based on cavity features for roughing efficiency. Background technique [0002] As we all know, the size of aircraft structural parts is large, and the material removal rate of parts is high, usually reaching more than 90%. Rough machining is the main process of material removal, and aircraft structural parts are mainly composed of a large number of cavity features. Rough machining is the main link that affects machining efficiency. At present, the rough machining of aircraft structural parts mainly adopts the layer cutting method, and the spiral cutting method is used to cut the material from the insid...

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Application Information

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IPC IPC(8): B23C3/00B23Q15/013
Inventor 李迎光刘旭郝小忠王伟刘长青李海
Owner SUZHOU MACHINING PRECISION ELECTRONICS
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