FEED GEAR OF INDUSTRIAL MACHINE AND INDUSTRIAL MACHINE USING FEED GEAR

摘要

PROBLEM TO BE SOLVED: To provide the feed gear of an industrial machine which can position a work feeding at a high speed by increasing the dangerous speed of a screw shaft, and to provide an industrial machine using such a feed gear. ;SOLUTION: When a feed ball nut 61 moves from one end side to the other end side of a ball screw spline shaft 41 following the rotation of the ball screw spline shaft 41 which is driven to rotate by a drive motor 53 provided at least at one side end of the ball screw spline shaft 41, an intermediate support 65 between both sides also runs at a low speed in the same direction on a support guide 67 and on the ball screw spline shaft 41, and as a result, the intermediate support 65 between both sides is positioned at about the middle position of both sides from the feed ball nut 61, and moves while supporting the ball screw spline shaft 41. Consequently, the dangerous speed of the ball screw spline shaft 41 is increased, the rotation number of the ball screw spline shaft 41 can be increased, and a high speed of the work feeding can be realized.;COPYRIGHT: (C)1999,JPO