A 24-tooth pinion rotating at a uniform 2500 rpm meshes with a 48-tooth gear in a spur gear reducer. Both pinion and gear are manufactured to a quality level of 9. The transmitted tangential load is 5000 lb. Conditions are such that Km= 1.7. The teeth are standard 250, full depth. The diametral pitch is 5 and the face width is 2.5 in. Assume the solid-disk gear is nonidler. Determine the bending stress when the mesh is at the highest point of single tooth contact. Express your answer in kilo pounds per square inch to three significant figures.
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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