$3$ NC Part Programming

$3+2=5$

For the part shown below, to machine it by turning a cylindrical bar shaped raw stock, one must first program the roughing passes and then the finish pass. The roughing passes remove most of the materials from the workpiece. Only a small layer of finishing allowance is left on the workpiece. The finishing cut is close to the part profile. For both processes, the feed rate is $30$ ipm and cutting speed is $2000$ rpm $.$ Assume only machine the right portion of the part, and tools are initially located at P$0(22,62).$

Assume that two tools $($T$01,$ T$02),$ as shown below, are available for usage, and the cutter tip is in ideal shape in the figure $($with zero radius$).$ The width of T$02$ is $3$ mm $.$

Write TWO part programs for the corresponding roughing and finishing machining processes. The depth of cut for each roughing layer is $2$ mm $,$ and finishing allowance is $1$ mm $.$