Abstract
In this paper, the elastic deflections are quantitatively investigated, which constitute a factor of the local elastic deformation in the grinding process and strongly influence on the precision grinding results. Based on the experimental results, the following conclusions can be drawn.
(1) The heights of effective abrasive grains distribute within 50% of the maximum chip thickness, and their mode is lower than the maximum value obtained from the calculation based on the wheel-workpiece interference conditions. Difference of two values, that is to say, the magnitude of the elastic deflection of the effective abrasive grain increases proportionally with the mean cutting force. The stiffness of the effective abrasive grain supported by springs becomes higher as the grade becomes higher.
(2) The effects of the elastic deflections of effective abrasive grains on the local elastic deformations are much less than expected, for example, the effect on the increase in the actual length of arc of contact is less than several per cent and the effect on the increase in the residual stock due to contact stiffness is less than 10-20%.
