Intelligent Sampling for Inspecting Cylindrical Surfaces

Abstract

The goal of our research is to reduce the nember of inspection points for cylinders and bell shapes while maintaning almost the same tolerance zone, so the time and cost is reduced. According to Cantilever Beam Theory that states the maximum deflection on the cylinder being machined using lathe machine, occurs at the free end of the cylinder. Hence the maximum dimensional eror can be expected to be at the free end of the cylinder being machined. A big reduction in the number of the inspection points has been achieved. It reached, in cylinders, to about 74.9 % with a difference in a tolerance zone of 3.7%. A big reduction, also, has been achieved in sampling bill shapes. It reached to about 66.75 % with a difference in a tolerance zone of 1.6%. So number of inspection points can be expected to be maximum at that region. The same thing can be said for the maximum deflection of the cutter used in cutting the bell shape. The cutter deflection will be maximum at the free end of the cutter, so maximum dimensional error can be expected to be at the bottom of the bell shape. Hence the sampling points are expected to be dense close to that region.