Abstract: A tool for centering and clamping of at least a part (P) to be fixed in position and comprising a through passage and adjusted for the tool, comprises a pilot device borne at the end of a case having an upper face forming a support for the part and clamping members. The tool further comprises elements for driving the clamping members between a centering position in which the clamping members are retracted into the pilot device and a plurality of clamping positions in which the clamping members project outside the pilot device and rest on the part (P). The driving elements are arranged for simultaneously pivoting and translating the clamping members between the centering position and the clamping position. The invention is useful for handling parts to be fixed in position.

Abstract: A rotary power tool is provided having a remotely actuated chuck device. The chuck is mounted onto the end of a drive spindle that extends from the casing of the power tool. The chuck includes an outer sleeve member that is axially movable relative to a drive spindle between a gripping and release position. A sleeve actuating device is provided having a first member engaged with the outer sleeve member and which extends generally radially outward from the drive spindle or chuck. The first member is movable in a direction so as to move the outer sleeve member between the gripping position and release position. The sleeve actuating device includes an actuator member configured with the first member to move the first member upon an external force being applied thereto. A base is rotatably advanceable and concentric on the casing. A helical opening is formed in the base.

Abstract: A rotary power tool is provided having a remotely actuated chuck device. The chuck is mounted onto the end of a drive spindle that extends from the casing of the power tool. The chuck includes an outer sleeve member that is axially movable relative to the drive spindle between a gripping position and a release position. A sleeve actuating device is provided having a first member engaged with the outer sleeve member and which extends generally radially outward from the drive spindle or chuck. The first member is movable in a direction so as to move the outer sleeve member between the gripping position and the release position. The sleeve actuating device includes an actuator member configured with the first member to move the first member upon an external force being applied thereto. In this manner, an operator can move the chuck device between the gripping and release positions at a location remote from the chuck device and drive spindle.

Abstract: A spindle centered on an axis and formed with an axially forwardly open recess centered on the axis is secured to a tool holder formed with a tubular extension projecting axially rearward and fitted complementarily in the recess by a mount having an actuating rod axially displaceable in the spindle and having a head in the recess formed with an inner frustoconical surface directed rearward toward the collar and an outer annular surface generally perpendicular to the axis and also directed rearward toward the collar. A retaining element on the rod in the tubular extension has a plurality of segments forming a frustoconical inner front face directed forward toward the head, an outer annular face generally perpendicular to the axis and also directed forward toward the head, and a rear face directed axially rearward.

Abstract: A shaft bearing for mounting the shaft ends of a rotating workpiece to be machined, especially an intaglio printing cylinder, has a rotatably mounted clamping chuck clamping the shaft end and having a hollow clamping head. The clamping head has gripping parts mounted so as to be radially adjustable relative to the longitudinal axis of the clamping head. Each gripping part is mounted rotatably about a pivot axis extending parallel to the longitudinal axis, and is guided, in a region distant from the pivot axis, along an arcuate guide track extending around the longitudinal axis. Each gripping part is configured so as to extend at a decreasing distance from the longitudinal axis and being movable relative to the guide track for the purpose of clamping the shaft end.

Abstract: A power chuck has a stationary housing, a chuck spindle rotatable in the housing about a chuck axis, a plurality of jaws carried on the chuck body movable radially toward and away from one another, an actuator shaft movable axially relative to the body, a jaw actuator connected between the actuator shaft and the jaws for displacing same radially outward on displacement of the element in one axial direction and for displacing the jaws radially inward on opposite axial displacement of the shaft, and a motion converter carried on the spindle.