Postprocess capable of converting the cutter location data to machine control data is an important interface between the NC programming design and manufacture.Due to the fact that current research on multi-axis postprocess methods mostly deals with machine tool configurations whose linear and rotational movements are orthogonal, an efficient postprocess algorithm for the five-axis machine with a tilting head is presented in this paper.DMU 80P which is a five-axis machine with a tilting head is selected as an example.Its mechanism model is proposed in this paper according to the mechanism theory.The kinematics model is established using coordinate transformation,and the solution of this model is discussed.Based on these,a window-based post-processor with multi-choice function was developed by VS2010 language.Through the verification by the commercial solid cutting software VERICUT,the feasibility of the algorithm proposed is demonstrated.At last,a real impeller cutting experiment has been conducted and the result further verifies the correctness of the algorithm.
Based on the analysis of features and NC-machining process of typical slots,a rule for slot-defining is given.An algorithm for toolpaths’ generation is proposed in the paper,via automatically obtaining the driving information of slot features.On these basis,under the environment of VS2010,a feature-based NC-processing system aimed at slots is developed,by which NC program can be made automaticly.At last,a simulate-actual processing test is done.The result shows that the algorithm proposed is correct.
The mechanism model of a spindle-rotating machine is proposed in this paper according to the mechanism theory.The movement model is established using coordinate transformation,and the solving of this model is discussed.Based on these,efficient algorithms for multi-choice and non-linear errors have been presented.A dedicated post-processor with non-linear error compensation function was developed by VS2010 language.A circle frame cutting experiment was conducted and the result showed that the algorithms was correct.
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