HEM and Dynamic Tool Paths

[rob@fain]

Does anyone have the math that is used to calculate this?

Example:

I'm using a 3/8 4 flute at 20% step-over, with radial chip thinning my IPM is 86.

when I use HEM, the IPM jumps to over 100 IMP, but I still have the 20% radial

cut.

 

Can someone give me the math behind this?

 

Thanks in advance.

[jlw™]

Download the chip thinning calc from Tim aka MTB_Technical.

 

Great tool.

 

Also, simple Google of "chip thinning formula"

 

I never use mcam numbers, calc my own and use 12% stepover.

[rob@fain]

Thanks jlw.

 

It is a great tool, but my issue is I need to explain the difference between regular chip thinning and HEM.

Does the HEM modify the radial step over, thus increasing the IPT?

 

Inquiring minds want to know.

 

thanks

[jlw™]

Should be the same formula. Put same specs in chip calc and you can see same numbers as mcam.

 

Calculator with explanation:

http://www.sgstool.com/calculators/Fractional-Square-and-Corner-Radius-End-Mill-Calculators/Fractional-Square-and-Corner-Radius-End-Mill-Calculators.htm