1283 Каталог KORLOY 2020 Инструмент и оснастка для станков по металлу Стр.L23

Каталог KORLOY 2020 Инструмент для станков по металлу Стр. L23 1283 Lab2u

O Trouble shooting for milling Milling Trouble Causes Solutions Cutting conditions Tool shape Insert grade Cutting speed Depth of cut Feed Coolant Rake angle Relief angle Approach angle Chattering at cutting edge Nose radius Toughness Hardness Flank wear Improper insert grade Improper cutting conditions Chattering t t t t Crater wear Improper cutting conditions Improper insert grade t t t Chipping Lack of insert toughness Excessive feed Excessive cutting load t t Built-up edge Improper cutting conditions Improper cutting edge shape Improper insert grade t t Chattering Improper cutting conditions Lack of number of cutting teeth Improper cutting edge shape Bad chip flow Unstable workpiece clamping t t Poor surface finish Built-up edge Improper cutting conditions Chattering Bad chip flow t t t Thermal crack Improper cutting conditions Improper insert grade t t t Fracture Improper insert grade Excessive cutting load Bad chip flow Chattering Excessive overhang t : Increase : Decrease : use : Correct use O General formulas for milling Machine efficiency rate (n) Power transmission mode Efficiency rate (E) Reference Principal axis direct connection driving 0.90 Belt driving 0.85 Double connection: 0.85 x 0.85 % 0.70 Starting driving 0.75 Oil pressure driving 0.60 0.90 (rOOftl Technical Information 23