A ROUGH MACHINING STRATEGY METHOD FOR PROCESSING IMPELLER

摘要

A tool combination choosing method for rough machining of an impeller is provided to improve productivity by expressing processing area division alternatives into usable tool combinations and formulating processing strategy through calculating processing time. The tool combination of a 3-shaft processing tool and a 5-shaft processing tool are calculated from usable tools in impeller processing(S1). A 3-shaft processing area and a 5-shaft processing area are classified according to the tool combination(S2). The 3-shaft processing area and the 5-shaft processing area are divided into the respective unit processing area(S3). The unit processing area is converted into the cubes having the same volume(S4). The processing time of the unit processing area is calculated by dividing the processing path of the cube with the feeding speed of the tool after producing the processing path of the cube based on the conditions of the cut width and cut depth of the tool(S5). The total processing time of all tool combinations is calculated based on the processing time of the unit processing area according to the tool combination(S6). The tool combination having the shortest processing time is selected(S8).