Machine work study was indicated in the ILO Work Study. The book was focused on human work study. Therefore it does not discuss in detail the machine work study and the study to reduce the machine time. But it mentioned that pump diagrams are used in work study to study the combined work of man and machine. The machine work is within the cylinder of the pump and man's work is the plunger. You have to minimize both to reduce the production time of a part.
Have you noticed in ILO Work Study Book?
Close attention is to be given to "shrinking the pump" — making the machine time as short as possible by ensuring that the machine is being used to the best advantage, to the correct speeds and feeds, and using cutting tools which are correctly ground and made of the best type of cutting steel for the sort of work in hand, so that the machine-running time is (minimized) machine running time at standard.
Page 350, Introduction to Work Study, Ed. by George Kanawaty, Fourth Revised Edition, 1992. in
Chapter 24. Setting Time Standards for Work With Machines.
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