Abstract: Provided is a motor unit structure suitable for automating work in which a gear is attached to a motor shaft. The motor unit structure comprises: a motor 20 having a key 24 at a distal end of a motor shaft 22; and a gear 30 that includes a key groove into which the key 24 is inserted and an axle hole penetrating along the axial direction, the distal end of the motor shaft 22 being mated with the axle hole. The axle hole has: a mating section that is formed on the tail end side of the axle hole in the direction in which the motor shaft 22 is inserted and that mates with the motor shaft 22 inserted into the axle hole; and a non-mating section that is formed on the distal end side of the axle hole in the direction in which the motor shaft 22 is inserted and that does not mate with the motor shaft 22 inserted into the axle hole.

Abstract: A roller bearing unit includes a shaft having a stepped part along a longitudinal axis; a first conical roller bearing which abuts the stepped part; a spacer that abuts, from a side opposite the stepped part, a first outer ring of the first conical roller bearing; a second conical roller bearing having a second outer ring that sandwiches the spacer between the first outer ring and the second outer ring, and a pressing member that is attached to the shaft and presses the first inner ring and the second inner ring in a direction to cause the first inner ring and the second inner ring to approach each other. A recess is recessed in a radial direction in an outer surface of the spacer to enable an external force along the longitudinal axis direction to be applied to the first outer ring from the spacer side.

Abstract: This positioner comprises: a first member; a rotating table supported to rotate about an axis relative to the first member; a motor that is parallel to and offset from the axis and drives the rotating table; a reducer disposed between the first member and the rotating table, reducing the rotation of the motor and transmitting the reduced rotation to the rotating table; and a power cable for supplying power to the rotating table. The first member and the reducer are provided with a hollow section passing therethrough. A current collector brush is attachable to and detachable from one end of the power cable. The power cable extends, from the first member in a direction away from the rotating table. After being bent into a U-shape, the power cable passes through the hollow section along the axis, and one end of the power cable is detachably secured to the rotating table.

Abstract: A robot including a robot mechanism including joints and drive units, a control unit controlling the drive units so that an inspection operation to inspect one target drive unit among the drive units is executed by the robot mechanism, and a notification unit notifying maintenance information of the target drive unit based on a current value of a motor of the target drive unit during the inspection operation, or on information associated with the current value, and the inspection operation includes transmitting, to the motor of the target drive unit, control command to rotate a joint as much as a predetermined rotation angle, and thereby moving a tip of the robot mechanism or a tool at the tip, close to an object at a predetermined position from a predetermined start position, to press the object, and separating the tip of the robot mechanism or the tool away from the object.

Abstract: A robot including a robot mechanism including joints and drive units, a control unit controlling the drive units so that an inspection operation to inspect one target drive unit among the drive units is executed by the robot mechanism, and a notification unit notifying maintenance information of the target drive unit based on a current value of a motor of the target drive unit during the inspection operation, or on information associated with the current value, and the inspection operation includes transmitting, to the motor of the target drive unit, control command to rotate a joint as much as a predetermined rotation angle, and thereby moving a tip of the robot mechanism or a tool at the tip, close to an object at a predetermined position from a predetermined start position, to press the object, and separating the tip of the robot mechanism or the tool away from the object.