Modeling Notch Wear of Ceramic Tool in High Speed Machining of Nickel-based Superalloy

• 作 者: 肖茂华
• 机 构: College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,
• 出 处: Journal of Wuhan University of Technology(Materials Science
• 发表日期: 2010年01期
• 关键词: notch flank shaped cutting utilized reasonably fatigue Notch validate workpiece

On the basis of theoretical analyses and calculations of high speed continuous impact force and tool notch surface temperature acted upon by burr and serrated chip edge, a notch wear model of low stress value and temperature impact fatigue was established. Saw-tooth-shaped burr and fin-shaped chip edge continuously impacts the rake face and flank face at high speed and high fre-quency, which results in a V-shaped notch wear. An experiment was done to validate that the saw-tooth-shaped burr does affect the notch wear. This model can be utilized to solve reasonably many problems that cannot be explained by any other theoretical assumptions.

On the basis of theoretical analyzes and calculations of high speed continuous impact force and tool notch surface temperature acted upon by burr and serrated chip edge, a notch wear model of low stress value and temperature impact fatigue was established. Saw-tooth-shaped burr and fin-shaped chip edge continuously impacts the rake face and flank face at high speed and high fre-quency, which results in a V-shaped notch wear. An experiment was done to validate that the saw-tooth-shaped burr does affect the notch wear. This model can be utilized to solve reasonably many problems that can not be explained by any other theoretical assumptions.