A generalized method for fitting a pair of continuous arcs (known as biarc) between two data points with given directional constraints is proposed. Such a curve-fitting technique is useful for generating a continuous smooth tool path of a numerically controlled machine in which circular arc is incorporated. The developed biarcs-fitting method eliminates the problems in conventional straight-line approximation or single-arc fitting of curved tool path where it leaves ridges on the finished surface of the workpiece. The capability and advantages of the proposed biarcs-fitting method are demonstrated by applying it to the numerically controlled machining of a curved die profile for tube extrusion and a cam profile.
|Number of pages||8|
|Journal||Journal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A/Chung-kuo Kung Ch'eng Hsuch K'an|
|Publication status||Published - 1984 Oct|
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