Abstract

A study of the relative error of the geometric and kinematic contact length formulas found in the literature, both in surface and cylindrical grinding, is performed. For this purpose, the exact formulas have been derived. Under usual grinding conditions, the relative error remains small, < 5%, except for the case of external cylindrical grinding, in which we can find a 2% relative error. It is advisable then to use the exact formulas in order to prevent any kind of error.

Keywords: contact length in grinding, error estimation formulas