Abstract
Five-axis side milling technique for Niemann worm wheel teeth flank using a tapered flat-end mill is presented. Equations describing the worm wheel tooth flank were derived based on differential geometry and the working principle of gears. The tooth flank was modified by offsetting its point cloud computed using these equations along the normal direction. The maximum normal curvature of the worm wheel tooth flank was computed, and its minimum radius of curvature was obtained. The cutter path step length and spacing between cutter travels were computed to generate a uniform path for five-axis machining. Software simulations of the cutter path were performed for validation and for analysing errors in the worm wheel tooth flank machining; this technique was also verified by milling worm wheels. The results demonstrated that the technique not only improved machining efficiency by 5 times compared with point milling but also guaranteed precision machining of the tooth flank for five-axis machining of cylindrical worm drives.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (No. 51075347), Jiangsu Province Industry-University Research Prospective Joint Research Project (No. BY2015051-08), and Postgraduate Practice Innovation Program of Jiangsu Province (No. SJCX18_0347).
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Quanping Sun is a Professor at Huaiyin Institute of Technology. His research interests include CAD/CAM and highspeed machining technology.
Haibing Wu is a Ph.D. in Mechanical Engineering. His research interests include gear CAD/CAM.
Zheng Zhang is a Master of Mechanical Engineering. His research interests include CAD/CAM and high-speed machining technology.
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Wu, H., Zhang, Z. & Sun, Q. High-efficiency technique for five-axis side milling of niemann worm wheels. J Mech Sci Technol 34, 2515–2524 (2020). https://doi.org/10.1007/s12206-020-0527-3
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DOI: https://doi.org/10.1007/s12206-020-0527-3