Manufacturing Technology: Unit I: Mechanics of Metal Cutting

Economics of machining

Mechanics of Metal Cutting - Manufacturing Technology

The following costs are considered to calculate the cost of machining.

ECONOMICS OF MACHINING

The following costs are considered to calculate the cost of machining.

(i) Cost of machining which involves cutting cost or operating cost

(ii) Cost of tooling

(iii) Cost of grinding

(iv) Cost of idle (or) non-productive cost.

(i) Calculation of cost of machining:


where

C1 = Sum of direct cost and overhead cost per minute

D = Diameter of the workpiece

L = Length of machining surface

V = Cutting speed

ƒ = Feed

(ii) Calculation of cost of tooling:


(iii) Calculation of cost of grinding:


(iv) Calculation of cost of idle:



Manufacturing Technology: Unit I: Mechanics of Metal Cutting : Tag: : Mechanics of Metal Cutting - Manufacturing Technology - Economics of machining