Experimental Study on Thermal and Force Characteristics in the Dry Slotting of Cortical Bone

Abstract:

Cutting force and temperature are the two chief factors affecting bone rehabilitation during bone cutting in many orthopedic surgeries. To reveal new knowledge of thermal and force when milling cortical bone, slotting experiments were carried on high-speed milling platform. Cutting force and temperature were measured during the milling process. The effects of cutting inputs on cutting thermal and force were researched in detail. The results showed that: feed rate and spindle speed had a great impact on the milling temperature, while the milling force was mainly influenced by spindle speed. A feed rate of 1.0-1.4 mm/s is recommended to obtain preferable milling force and temperature, and a larger feed rate of 1.2-1.4 mm/s is advised to use with a lower spindle speed (8000-20000 r/min), while a smaller feed rate of 1.0-1.2 mm/s should be chosen when spindle speed was between 20000-40000 r/min. Feeding parallel to the growth direction of the cortical bone can significantly reduce the milling temperature, but there was no obvious change in milling force. The lowest cutting temperature obtained during the experiment was around 50 °C without coolant, which was acceptable for orthopedic surgeries.

• Periodical: Advanced Materials Research (Volume 1136)
• Pages: 233-238
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1136.233
• Online since: January 2016
• Authors: Liang Wen, Zi Han Zhao, Jin Bang Song, De Dong Yu, Ming Chen*, Steve G.F. Shen
• Keywords: Cortical Bone, Cutting Temperature, Feed Rate, Slotting, Spindle Speed

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