3. A steel ring outside diameter 600 mm and an internal diameter of 200 mm is being faced on CNC lathe. The machine is capable of maintaining a constant surface speed, as the face of the ring is being machined and the feed is set to 0.25 mm/rev. From tests, when V=50 m/min, tool life T is 60 mins and n=0.3. Given Taylors empirical tool life relationship VT" =C. Determine the number of components that can be machined per tool for a tool of 50 mins.
Theory and Design for Mechanical Measurements
Measurement is a term that refers to analyzing a manufactured component regarding the degree of accuracy for dimensions, tolerances, geometric profile, roundness, flatness, smoothness, etc. Measurement always involves comparing the manufactured component or the prototype with a standard specimen whose dimensions and other parameters are assumed to be perfect and do not undergo changes with respect to time.Precisely in mechanical engineering the branch that deals with the application of scientific principles for measurements is known as metrology. The domain of metrology in general deals with various measurements like mechanical, chemical, thermodynamic, physical, and biological measurements. In mechanical engineering, the measurements are limited to mechanical specific such as length, mass, surface profile, flatness, roundness, viscosity, heat transfer, etc.
Basic principles of engineering metrology
Metrology is described as the science of measurement, precision, and accuracy. In other words, it is a method of measurement based on units and predefined standards.
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