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Author Topic: Mach 3 & Denford Orac spindle speed headache!!  (Read 6162 times)

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Re: Mach 3 & Denford Orac spindle speed headache!!
« Reply #20 on: January 02, 2015, 10:36:33 AM »
Here is some more info on the subject:
http://www.cnccookbook.com/CCCNCGCodeG96ConstantSurfaceSpeed.htm
although, Hood has it pretty well covered .... as usual.  :)

Russ

Offline Hood

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Re: Mach 3 & Denford Orac spindle speed headache!!
« Reply #21 on: January 02, 2015, 10:43:09 AM »
The Teeth and Feed per tooth entries are really meant for milling cutters. The manufacturers will give a feed per tooth and if you are using a lathe then the "tooth" will be 1, if for example you have a 4 flute milling cutter and the feed per tooth is 0.2 then that would mean you actually move the cutter at 0.8mm/rev.



Hood
Re: Mach 3 & Denford Orac spindle speed headache!!
« Reply #22 on: January 02, 2015, 10:57:14 AM »
so is there a recommended feed per tooth for carbide bits and likewise for HSS tools?
I know that the lathe tool has in effect only 1 cutting tooth

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Re: Mach 3 & Denford Orac spindle speed headache!!
« Reply #23 on: January 02, 2015, 01:11:58 PM »
Most carbide inserts for lathe tools will have the vc  (suface speed) and fz (feed per tooth per rev) on the box.
Likewise carbide inserts for milling cutters will also usually have this info.
For carbide and even HSS milling cutters you should find info on the manufacturers web site.

As an example here is the info for the powdered metal cutters I use for stainless.
http://www.cutwel.co.uk/FileDepository/%5CProductId%20-%2083/Cutting%20Data%20GA942.pdf

YG give you a bit more info than normal as they give you the rpm and feed per min and as such save you having to calculate them.

Hood

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Re: Mach 3 & Denford Orac spindle speed headache!!
« Reply #24 on: January 03, 2015, 07:11:11 PM »
This document provides a lot of info on speeds and feeds.

http://www.machsupport.com/forum/index.php/topic,20045.msg138970.html#msg138970

RICH