When the cutter is programmed to enter straight into the workpiece, thick chips will be produced at the exit until the cutter is fully engaged. This can dramatically reduce tool life, especially in harder steels, titanium and heat resistant alloys.
Also, from a vibration point of view, it is essential to enter the workpiece smoothly.
There are two ways to solve this problem:1. Lower feed
Reduce feed to 50% until the cutter is fully engaged.2. Roll into cut
Program a roll into cut in a clockwise motion (counter-clockwise will not solve the thick chip thickness problem). By rolling into cut, the chip thickness on exit is always zero, allowing for higher feed and longer tool life.