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Metal Machining
Non-Productive Time in Production Cost Formulas
Non-Productive Time is the total time wasted in setting up the machine or workpiece for a particular process. And is denoted by NPT. Non-Productive Time is usually measured using the Minute for Time. Note that the value of Non-Productive Time is always positive.
Production Cost formulas that make use of Non-Productive Time
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x
Production Cost per Component for Constant-Speed-Rough-Machining given Tool Changing Cost
Go
f
x
Production Cost per Component in Constant-Cutting-Speed, Rough-Machining Operation
Go
f
x
Machining and Operating Rate given Production Cost per Component
Go
f
x
Constant for Machining Operation given Production Cost per Component
Go
f
x
Reference Tool Life given Production Cost per Component
Go
f
x
Reference Cutting Speed given Production Cost per Component
Go
f
x
Cost of each Tool given Production Cost per Component
Go
f
x
Tool Changing Time for each Tool given Production Cost per Component
Go
f
x
Taylor's Tool Life Constant given Production Cost per Component
Go
FAQ
What is the Non-Productive Time?
Non-Productive Time is the total time wasted in setting up the machine or workpiece for a particular process. Non-Productive Time is usually measured using the Minute for Time. Note that the value of Non-Productive Time is always positive.
Can the Non-Productive Time be negative?
No, the Non-Productive Time, measured in Time cannot be negative.
What unit is used to measure Non-Productive Time?
Non-Productive Time is usually measured using the Minute[min] for Time. Second[min], Millisecond[min], Microsecond[min] are the few other units in which Non-Productive Time can be measured.
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