Episode 2: Chip Thinning

Well-intentioned conservatism can actually be very bad for tool life, according to the second episode of The CNC Chef, a new monthly video series from Cutting Tool Engineering and Bob Warfield from CNCCookbook. While the first episode focused on the risk of tool rubbing by turning down the feedrate too much, the second episode cautions against cutting back cut width or stepover too much, which causes chip thinning.
About The CNC Chef Video Series: Bob Warfield founded CNCCookbook.com and built it up to be one of the most popular CNC Blogs on the Internet. Thanks to his work with CNCCookbook and the G-Wizard software series, Warfield routinely receives questions from shops all over the world. For more information about the CNC Chef, visit his website here. www.cnccookbook.com/index.htm

[@luiasori87]

Hi, do you have experience applying that chip compensation approach on difficult to cut materials such as Nickel based superalloys? I tried it but turned out to be difficult to implement as increasing the chip load caused a steep increase in the cutting forces which caused a short tool life. For my trials I used WC solid end mills with 4 flutes and PVD TiAlN coating of 1mm diameter. The rpms were kept constant at 40K RPM and my feed rates raged from 25 to 250 mm/min , which are bellow the cutting edge radius (5 microns). But still the forces increased and the tool life deacresed by increasing the feed rate.

[@eaven1117]

Hello Bob,
Could you please share the variables for:
CT = (desired chip per tooth??)
D = (Diameter)
RDOC = (Radial Depth of Cut)
Thank you for the help.

[@Slovnoslon]

это бестолковое объяснение, и так бывает когда человек не понимает сам о чем говорит. Я бы не советовал слушать подобные инструкции.