Study on the Chipping and Cracking of End mill of Inserting Sintered Carbide

To solve the breaking problem in milling process of throw-away insert milling cutter, this paper puts forward the cutting edge and promise edge width, de which decrease the cutting force by 18%-38%, power consumption by 28%, save production cost by 15% and enhance the tool life above two times. The paper also analyses the effect of four kinds of cutting position and diameter size and gives a reference cutting quantity for production application.