JPS646554A - Transfer table - Google Patents

Abstract

PURPOSE:To eliminate influence on the sliding torque and the revolution torque by jointing a flange fixed onto a ball nut and a housing on a transfer block which can be slided along a guide rail through pins and a plate. CONSTITUTION:The revolution movement of a motor 11 is converted to a rectilinear movement by a ball screw 1 and a ball nut 2, and transmitted to a housing 7 and a transfer block 6 through a plate 10 having a high elastic deformation rate whose both edges are supported by pins 9 and 9 and a flange 8 fixed onto the nut 2, and shift along a guide rail 3 is performed. Since, in this case, the housing 7 and the flange 8 are jointed through the pin 9 and the plate 10, the ball nut 2 and the transfer block 6 can be easily transferred by the deformation of the plate having the high elastic deformation rate, even if the ball screw 1 is tilted in the pitch direction with respect to the guide rail 3 or in the yaw direction. Therefore, even if the straightness and assembly accuracy of the ball screw are low, no influence is given to the sliding torque and revolution torque.