Abstract: An apparatus for operatively coupling a rotatably driven machine tool accessory, such as a right angle milling head, to a machine tool having a rotary output shaft, such as a horizontal boring machine. The apparatus includes a first collar that is mounted to the horizontal boring machine in a position that is adjacent to the rotary output shaft thereof. A second collar is mounted to the machine tool accessory and is adapted to mate with the first collar. Cylinder actuated ball locking devices are provided in the second collar and are adapted to be received in corresponding receptacles in the first collar. The cylinders are adapted to cause the ball locking devices to engage the receptacles in the first collar to thereby secure the first collar to the second collar. To disengage the second collar from the first collar, the cylinders are retracted to permit the ball lock devices to disengage the receptacles in the first collar.

Abstract: The present invention pertains to a method which provides for the placement of a bit point of a bit at a predetermined position with respect to a rotatable member. The method includes the steps of burning into a holder a surface which corresponds to a portion of the surface of the member; and fixing the holder on the member such that the surface burned into the holder is adjacent the portion of the surface of the member, and the bit point of the bit is capable of being held by the holder at the predetermined position. The present invention also pertains to an apparatus which provides for the placement of a bit point of a bit at a predetermined position with respect to a rotatable member. The apparatus includes a holder for holding a bit, and a device for burning into the holder a surface which corresponds to a portion of the surface of the member.

Abstract: The present invention pertains to a method which provides for the placement of a bit point of a bit at a predetermined position with respect to a rotatable member. The method includes the steps of burning into a holder a surface which corresponds to a portion of the surface of the member; and fixing the holder on the member such that the surface burned into the holder is adjacent the portion of the surface of the member, and the bit point of the bit is capable of being held by the holder at the predetermined position. The present invention also pertains to an apparatus which provides for the placement of a bit point of a bit at a predetermined position with respect to a rotatable member. The apparatus includes a holder for holding a bit, and a device for burning into the holder a surface which corresponds to a portion of the surface of the member.