Tool Posture Planning Method for Continuous Multi Axis Control Machining with Consideration of Shortening Shank Length of End Mill
Jun’ichi Kaneko and Kenichiro Horio
Production and Processing Laboratory, Saitama University, 255 Shimo-Ohkubo, Sakura-Ku, Saitama City, Saitama 338-8570, Japan
In recent multiaxis-controlled machine tools, a new planning method to keep continuous motion on rotational axes and tool setting with short shank length from tool holder end is required to realize both high productivity and fine surface. This paper propose a new planning method consisting of a temporary search of new tool posture based on estimation of the required shank length and the gradual optimization process of motion on rotational axes. The proposed method repeats the following three planning steps: the estimation of interference between the cutting tool and workpiece, the search for a new tool posture to avoid interference and the re-planning of tool posture changes to prevent rapid motion on rotational axes. By repeating these steps many times, continuous change can be gradually realized in rotational axes without interference.
-  Y. Takeuchi, H. Shimizu, T. Idemura, T. Watanabe, and T. Ito, “5-Axis Control Machining Based on Solid Model,” J. of the Japan Society for Precision Engineering, Vol.56, No.11, pp. 2063-2068, 1990. (in Japanese)
-  X. Zhao, D. Ge, and M. Tsustumi, “Study on CAM System for 5-axis Controlled Machining Center: Efficient Collision Check and Collision Avoidance,” J. of the Japan Society for Precision Engineering, Vol.61, No.12, pp. 1745-1749, 1995. (in Japanese)
-  K. Konishi, Y. Fukuda, and K. Iwata, “Study on a Method of Collision Check and Collision Avoidance for 5-Axis Control Machining,” J. of the Japan Society for Precision Engineering, Vol.63, No.9, pp. 1258-1262, 1997. (in Japanese)
-  Y. Sato, Y. Yokobori, and M. Tsutumi, “Dynamic Synchronous Accuracy of Translational Axes and Rotational Axes in 5-axis Machining Center,” J. of the Japan Society for Precision Engineering, Vol.72, No.1, pp. 73-78, 2006. (in Japanese)
-  K. Shirase, T. Inamura, and T. Yasui, “Quantitative Analysis of Factors of Machining Error in End Milling Operation,” J. of the Japan Society for Precision Engineering, Vol.54, No.4, pp. 705-712, 1986. (in Japanese)
-  W. Huang and M. Inui, “Algorithm for Determining the Optimal Cutter and Shank Length for Fixed 5-Axis Machining,” J. of the Japan Society for Precision Engineering, Vol.76, No.2, pp. 220-225, 2010. (in Japanese)
-  J. Kaneko and K. Horio, “Planning method of minimum shank length for multi axis control machining with parallel processing on GPU,” J. of the Japan Society for Precision Engineering, Vol.77, No.2, pp. 231-235, 2011. (in Japanese)
-  J. Kaneko and K. Horio, “Tool Posture Planning Method for Continuous 5-Axis Control Machining on Machine Tool Coordinate System to Optimize Motion of Translational Axes,” Int. J. of Automation Technology, Vol.5, No.5, pp. 729-737, 2011.