Abstract
On the centerless internal grinder whereon the work is supported on the outer surface by rolls and is ground, the pressure of the roll, which acts on the work, seriously affects on work accuracy. This paper will treat the relationship between the support rigidity and accuracy of work.
Pressure roll possesses the function of restricting the vibration of work and holds grave influence on work accuracy. That is :
(1) From the standpoint of work accuracy, it is favorable to have the load imposed on the pressure roll as heavy as possible to the extent that plastic deformation is not caused.
(2) Roundness of the outer and inner diameter possesses proportional relationship and will not vary due to the pressure of the pressure roll.
(3) Roundness will not be improved although the work is repeatedly ground.
