Five-axis rake face grinding of end-mills with circular-arc generators

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• 作者：Mahmoud M. Rababah ; Ahmad M. Almagableh…
• 关键词：Five ; axis CNC grinding ; End ; mill cutting tools ; Rake face grinding ; Flute surface
• 刊名：International Journal on Interactive Design and Manufacturing (IJIDeM)
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：11
• 期：1
• 页码：93-101
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Engineering, general; Engineering Design; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design; Electronics and Microelectronics, Instrumentation; Industrial Design;
• 出版者：Springer Paris
• ISSN：1955-2505
• 卷排序：11

文摘

The rake angles and the cores of the end-mill cutting tools are very important for they control the cutting forces during machining, the strength of the cutting edges, the rigidity of the end-mills and the chips removal capability. Thus, grinding end-mill flutes with accurate rake angles and accurate cores is very crucial in cutting tools’ industry. Flutes grinding is normally accomplished using two axis CNC grinding machines; however, this requires grinding-wheels with free-form profiles, expensive and uneasy to make, and the produced cutting edges and the normal rake angles along these edges are inaccurate. Hence, this work extends the five-axis CNC grinding approach developed by the first author to grinding of circular-arc ball end-mills. The generic mathematical equations of the grinding-wheel orientations and locations are first derived. Then, the grinding-wheel path is generated and the produced flute surface is precisely modeled. With standard grinding-wheels, computer simulation for the grinding approach is conducted and proved to produce precise end-mill cores, accurate cutting edges and accurate rake angles along these edges.