Experiments with a Lathe-Tool Dynamometer
J. T. Nicolson · Proceedings of the Institution of Mechanical Engineers · 1904
In the Tool-Steel Trials made by the Manchester Committee in 1902-03 (the report upon which was published by the Manchester Association of Engineers in their Transactions for 1903), there bppeared an entire lack of uniformity in the shapes and angles of thb uools submitted by the eight competing firms.There was also no obvious connection between the shapes and angles of the tools and the cutting forces upon these tools deduced in the report from the electrical power measurements made by the Committee.Neither did the shape or angle supply a clue to the causes of success and failure in the various trials with different tools.On the other hand, the necessary reconsideration of the design of lathes for the rapid and heavy cutting rendered possible by the new steels introduced by Taylor and White, and now everywhere adopted, for a thorough and systematic investigation of the forces acting upon a cutting tool.I f a standard area of cut can be agreed upon for the various sizes of lathe, a knowledge of the forces to be Overcome when taking that cut-not only for turning the work against the tool, but also for moving the slide-rest and saddle :in * Leipzig, 1873.