This paper describes new equations for calculating grinding forces and the
new measuring system in centerless infeed grinding. In the equations, there
are some unknown parameters which must be measured experimentally. For get
ting the values, such as forces on blade and stopper, angular velocity and
acceleration of workpiece, a 3-component dynamometer and non contact workpi
ece velocity sensor were mounted on the grinding machine. From this measuri
ng system, normal and tangential grinding forces at grinding point were mea
sured in centerless grinding of a ferrite workpiece with a diamond wheel. T
hese values agreed well with the grinding forces from a conventional measur
ement in cylindrical grinding, and it was found that the measuring system f
or centerless grinding has satisfied performance.