Angle of geometry of cutting part of broach of the horn before losing is ground easily simply, be opposite especially tall manganese steel, quench hardness is HRC<40 quench the alveolus of steel is gotten cut. Broach of average level fried dough twist, its before horn is in by broach external diameter + 30 ° reach broach center - 30 ° change. As a result of before part is larger, the wedge part of cutting tool is smaller, the intensity of point is low also, derive the efficiency of heat in metal cutting is low also, broach burns caustic because of cutting temperature. Cut strength to getting especially the tall manganese steel with tall, tall also hardness and the work with the not quite expensive hardness after quenching are more difficult. Getting so when cutting these material, need broach before the before losing part that horn builds 15 ° of ～ of wear γ 00=-10 ° , its width is 1. 5 ～ 2mm. Grind the horizontal blade of broach short, for the 2/5 left and right sides of standard broach, in order to reduce axial force. Broach of this kind of horn before losing, angle of cutting part geometry is ground easily simply, be opposite especially tall manganese steel, quench hardness is HRC<40 quench the alveolus of steel is gotten cut. Cutting dosage: Cutting speed is Vc=5 ～ 10m/min, feed F=0.
02 ～ 0.
0mm/r. Get with it cut the material such as hard plastic, cast-iron, organic glass, its effect is very good also. CNC Milling
CNC Machining