CONTACT DYNAMIC STIFFNESS CALCULATION SYSTEM AND PROCESSING SYSTEM

To provide a contact dynamic stiffness calculation system that is capable of calculating contact dynamic stiffness with high accuracy by taking into account contact states between a workpiece and workpiece support members.SOLUTION: A contact dynamic stiffness calculation system 130 acquires basic information related to a workpiece W containing information of a processing position I on the workpiece W supported by workpiece support members 34, 41. Further, the contact dynamic stiffness calculation system 130 calculates a difference bending angle that is a difference between a workpiece bending angle and a support member bending angle at a contact part of the workpiece W and the workpiece support members 34, 41, at the time an initial state in which acting force is not applied by an abrasive wheel T to the workpiece W supported by the workpiece support members 34, 41, changes to an acting state in which the acting force is applied. In addition, a spring constant and an attenuation coefficient at the contact part of the workpiece W and the workpiece support members 34, 41 are calculated on the basis of, the basic information and the difference bending angle, in order to calculate contact dynamic stiffness.SELECTED DRAWING: Figure 6 【課題】工作物と工作物支持部材との間の接触状態を考慮して、接触動剛性を高精度に算出することができる接触動剛性算出システムを提供する。【解決手段】接触動剛性算出システム１３０は、工作物支持部材３４、４１により支持された工作物Ｗにおける加工位置Ｉの情報を含む工作物Ｗに関する基本情報を取得する。また、接触動剛性算出システム１３０は、工作物支持部材３４、４１により支持された工作物Ｗに砥石車Ｔから作用力が加わっていない初期状態から作用力が加わった作用状態に変化したときの、工作物Ｗと工作物支持部材３４、４１との接触部における工作物曲げ角度と支持部材曲げ角度との差分である差分曲げ角度を算出する。そして、基本情報と差分曲げ角度とに基づいて、工作物Ｗと工作物支持部材３４、４１との接触部におけるばね定数及び減衰係数を算出して接触動剛性を算出する。【選択図】図６