Work measurement professionals have to focus on machine time estimation also. Also, they have to focus on developing productivity science based on measurements that they are taking. My comment in work measurement Linkedin group.
In the case of turning the formula for machine time is
T = [L+A]/[frN]
Where T = machining time in minutes
L = length of the workpiece
A = an allowance for tool approach and exit, normally 2 to 5 mm
fr = feed rate (mm per revolution of the workpiece)
N = revolutions of the workpiece in rev per minute
Milling - Estimation of Machining Time
https://nraoiekc.blogspot.com/2019/11/milling-estimation-of-machining-time.html
Updated on 12 November 2019, 4 April 2014
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