Abstract: A welding robot controlling method for controlling a welding robot having a welding torch which has a tip thereof directed toward a teaching direction and sensor which intermittently generates a locus correction signal for the tip of the welding torch, comprising, (1) giving the locus correction signal as a resultant vector of an arbitrary number of two-dimensional vectors on a plane which intersects a welding line direction, (2) correcting a locus by controlling the three basic axes of the robot in a direction of a resultant vector which is composed of a predetermined length vector of which direction is parallel to a line connecting two teaching points and which passes through a tip of the welding torch and the locus correction vector, when the locus correction signal is generated, (3) controlling the three basic axes of the robot such that the tip of welding torch moves on a line which is parallel to the line connecting the two teaching points, until a subsequent locus correction signal is again given after

Abstract: A radiation shield superior to lead in absorbing/attenuating X-rays and the like made by molding with a resin binder a mixture of powders, namely lead oxide derived from scrap storage batteries, slag derived from electrorefining of aluminum, nickel or chromium as a by-product, and molybdenite. The molded shield may also contain zeolite for gas absorption and a reinforcing core of glass fabric.

Abstract: In a control device for an industrial articulated robot, in the linear interpolation between two specified points, the distance between the two points is divided into segments, and the interpolation increments of the articulation drive axes for each interpolation internal, which correspond to the segments, are calculated for interpolation so that the interpolation increments are distributed uniformly with time.

Abstract: In a robot locus control metod, the coordinates of first three representative points and first work points of an object to be handled by a robot are taught to the robot, when the relative position of the robot and the object is changed, the coordinates of second three representative points corresponding to the first three representative points are taught, and the coordinates of second work points are calculated from the relative position of the first three representative points and the first work points and the second three representative points, thereby to command the robot working locus.