Effects of Cutting Parameters over Turning of UDIMET® 720 Superalloy in a Broaching Process Simulation

A large experimental campaign has been done by turning to reduce tool costs and to highlight the effects of cutting parameters on tool wear and machined surface quality. In order to optimize the productivity, the effect of cutting conditions on cutting forces is taken into account. To determine the broach geometry composed of several teeth, the effects of rake angle, cutting edge preparation and clearance angle are presented. In order to simulate the broaching process, a specific test has been designed on a lathe. This allows us to include specific disturbances like interrupted cut, temperature variation, lubrication discontinuity, and difficulty to liberate the chip.