Recent developments in tolerancing techniques

Mechanical tolerances are specified in conjunction with part geometry, material type and other technical specifications during the design of mechanical components and assemblies. These tolerances ensure the expected design function, and provide guidelines for the manufacture of designed parts. However, assigning proper tolerances for a design is a non-trivial task. This paper reviews the, recent developments in the field of tolerancing techniques, particularly with reference to the use of computers, cost tolerance relationship and tolerance design for quality improvement of the product.