GRINDING DEVICE AND GRINDING METHOD

To provide a grinding device and a grinding method by which slippage between a work-piece and a spindle can be prevented in advance.SOLUTION: A grinding device 1 rotates a work-piece W whose both ends are supported by support parts (center 14, center 18) of spindles Cm, Cs and an abrasive wheel 23 which is supported by a grind wheel spindle 24 respectively, and causes the abrasive wheel 23 to relatively approach and separate from the work-piece W, thereby grinding the work-piece W. This grinding device 1 comprises: an inclination calculation part 31 which calculates a grinding resistance inclination which is inclination of a grinding resistance to a time; a threshold setting part 32 which sets a grinding resistance inclination threshold of the grinding resistance inclination; and an inclination determination part 33 which determines whether the grinding resistance inclination exceeds the grinding resistance inclination threshold or not.SELECTED DRAWING: Figure 1 【課題】工作物と主軸との間のスリップを未然に防止できる研削加工装置及び研削加工方法を提供する。【解決手段】研削加工装置１は、主軸Ｃｍ，Ｃｓの支持部（センタ１４、センタ１８）に両端が支持される工作物Ｗ及び砥石軸２４に保持される砥石車２３をそれぞれ回転させ、工作物Ｗに対して砥石車２３を相対的に接近離間させることで、工作物Ｗの研削加工を行う研削加工装置１において、研削抵抗の時間に対する傾きである研削抵抗傾きを算出する傾き算出部３１と、研削抵抗傾きの研削抵抗傾き閾値を設定する閾値設定部３２と、研削抵抗傾きが研削抵抗傾き閾値を超えたか否かを判定する傾き判定部３３と、を備える。【選択図】図１