Study on grinding force character and system stability on alternating-speed dressing saucer diamond wheel with cup wheel

Based on truing model of saucer diamond-grinding wheel with cup wheel, the influence of contact stiffness between saucer wheel and cup wheel on the stability of the grinding system and grinding force was discussed, as well as verifying of the signal characteristic and changing rule of grinding force. The experimental results show that radial grinding force increases and stability of the grinding system decreases with the increasing of contact stiffness. And the radial grinding force decreases with alternating grinding speed. The grinding forces come to biggest under low grinding speed. The signals of grinding force are stationarity and periodic vibration signals, which don't follow the normal distribution in general. The grinding of alternating wheel speed makes the best grinding effect.