A machine tool for the machining of elongate workpieces includes a workpiece support column having workpiece support components for supporting a first workpiece and second workpiece support components for supporting a second workpiece. The first workpiece support component and the second workpiece support component are arranged for supporting the first workpiece vertically above the second workpiece. The workpiece support column is rotatable around a vertical axis so as to shift the workpieces between the machining station and a station for loading and unloading of workpieces. The workpiece support component include a drive element for applying torque to the workpieces for machining of the workpieces by turning. A motor and chuck assembly and a method of machining workpieces are related.

A gripping machine for an article includes a machine frame, first and second drive means associated with the machine frame, a support platform of the article, movable with respect to the machine frame by the first drive means along a direction of displacement, and holding members, arranged about the direction of displacement to delimit therebetween a gripping plane or space of the article, at least one holding member being movable radially by the second drive means between a holding configuration and a release configuration of the article, and vice versa. Electronic control means control the first drive means so that the support platform is located at one or more predefined axial positions and the second drive means so that, in the holding configuration, at least one holding member is moved continuously towards the article to actively clamp the article.

A gripping machine for an article includes a machine frame, first and second drive means associated with the machine frame, a support platform of the article, movable with respect to the machine frame by the first drive means along a direction of displacement, and holding members, arranged about the direction of displacement to delimit therebetween a gripping plane or space of the article, at least one holding member being movable radially by the second drive means between a holding configuration and a release configuration of the article, and vice versa. Electronic control means control the first drive means so that the support platform is located at one or more predefined axial positions and the second drive means so that, in the holding configuration, at least one holding member is moved continuously towards the article to actively clamp the article.

A method of gripping a substantially planar workpiece while providing compensation for variations in thickness is described. During the process, the workpiece is overdriven into a clamping member before clamping force is applied, and the positions of the clamping member before and after application of the clamping force are measured. These measurements are then used to control a compensating movement of the tooling table and optionally a final lift of the conveyance rails.

A clamp includes a base portion and a grip portion. The base portion has a base end. The base portion includes an outer cylindrical member disposed about a clamp center axis. The outer cylindrical member extends from the base end to an outer distal end. The outer distal end of the outer cylindrical member defines an annular first clamping surface disposed about the clamp center axis. The outer cylindrical member defines a base internal cavity extending from a base opening. The grip portion includes a cylindrical body and a grip member extending radially outward from the cylindrical body. The grip portion includes a second clamping surface. The cylindrical body is configured to be positioned within the base internal cavity of the base portion such that the second clamping surface of the grip portion radially overlaps the annular first clamping surface of the base portion.

A chamfering knife holder includes a mounting cover, a protrusion, a mounting assembly, a first containing space, a second containing space, and a resilient element. The protrusion circularly protrudes from an internal peripheral surface of the mounting cover and is enclosed to form a through hole. The mounting assembly is detachably and movably mounted in an interior of the mounting cover. The first containing space and the second containing space are both enclosed by the mounting cover, the protrusion, and the mounting assembly and communicate with each other via the through hole. The resilient element is selectively disposed in the first containing space or the second containing space for canceling out a pushing force or a pulling force acting on a chamfering knife and prevent the chamfering knife from being damaged.

A chamfering knife holder includes a mounting cover, a protrusion, a mounting assembly, a first containing space, a second containing space, and a resilient element. The protrusion circularly protrudes from an internal peripheral surface of the mounting cover and is enclosed to form a through hole. The mounting assembly is detachably and movably mounted in an interior of the mounting cover. The first containing space and the second containing space are both enclosed by the mounting cover, the protrusion, and the mounting assembly and communicate with each other via the through hole. The resilient element is selectively disposed in the first containing space or the second containing space for canceling out a pushing force or a pulling force acting on a chamfering knife and prevent the chamfering knife from being damaged.

The present application relates to a machining assembly comprising an effector intended to be mounted on a robot with multiple degrees of freedom, in which invention the mounting of the motor spindle relative to the intermediate supports and frame of the effector allows a numerically controlled movement along three axes X, Y, Z of a trihedron, the effector bearing on the piece to be machined or on the surrounding tools by means of a ball joint at the foot end of the effector. Since the effector bears on the piece to be machined or on the surrounding tools it is possible to create local stiffness and to obtain the precision required to guarantee the quality of the machining process.

A clamp for retaining a workpiece onto a fixture whereby the method of connecting the clamp to the fixture provides for a simultaneous combination of both horizontal and vertical clamping forces against the workpiece without locating any portion of the clamp above the upper surface of the workpiece.

A machining tool assembly is provided for machining a blank to form a firearm lower receiver. The assembly includes a pair of side plates positionable on opposed sides of the blank to capture the blank therebetween. A template plate having a template aperture is adapted to be removeably attachable to the side plates. The template aperture is aligned with a top surface of the blank and is adapted for machining a cavity within the blank having a peripheral contour complimentary to a peripheral contour of the template aperture. A centering mechanism is adapted to be removeably attachable to the template plate, with the centering mechanism including an opening aligned with a corresponding void formed on the blank to align the blank with the template plate.