5軸制御マシニングセンタの精度向上に関する研究（旋回角度範囲がアライメントの推定精度に及ぼす影響）

概要

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The demand for five-axis machining centers is rapidly increasing to achieve process integration and high machining accuracy. This paper proposes the development of a five-axis machining center with Table-on-Table structure due to the ease of achieving high accuracy with a large rotary axis travelling range. Table-on-Table type structure can easily achieve a wide travelling range, especially for the first rotating axis. The ease of achieving high accuracy with a large travelling range has been verified by simulating the supposition of double ball bar (DBB) measurement. When the magnitude of alignment error is estimated by using DBB measured data including motion errors of the rotating axis with the same order, it is shown by the simulation analysis that the magnitude of the estimated alignment error depends on the travelling range.