Abstract: A method for mechanical machining, in particular for drilling and turning wheels of light alloy, comprising a step of centring and locking the wheel to be machined prior to the steps of drilling and turning the wheel.

Abstract: A manipulating device (1) for lathes is described, in particular for vertical turret lathes including at least one toolholder saddle, of the type comprising at least a first and a second workpiece manipulator device (10,11) associated with the saddle, such that by means of the displacement of the toolholder saddle the manipulator devices are displaceable between a station (C) for loading workpieces (P) to be machined and a station (S) for unloading the machined workpieces, a workpiece table (4) of the lathe being placed between the stations (C,S) to support the workpiece (P) during machining, wherein the first and the second manipulator device (10, 11) are displaceable with movements independent of one another, at least in the direction (X) of displacement of the toolholder saddle to and from the loading and unloading stations (C,S) and the workpiece table (4), in such a way that the distance between the manipulator devices (10, 11) on the lathe is adjustable at least in that direction (X).

Abstract: A method of machining mechanical workpieces, in particular of machining the braking surfaces (2,3) of a brake disc (1) for vehicles is described and comprises the steps of loading the workpiece onto a work station (8) and clamping the workpiece in a median reference plane (A) between the opposed braking surfaces (2,3), as well as defining the excess material material thickness to be removed from each of the said surfaces, with respect to the positioning coordinates of the said plane in relation to a system of working axes of the station, to achieve a balanced, centred division of excess metal removed from the said surfaces (2,3).

Abstract: A method for mechanical machining, in particular for drilling and turning light alloy wheels , comprising prior to the mechanical machining step, a step of orientation and measurement of the wheel including the steps of arranging a device for seating the wheel with at least three seating areas spaced apart from each other angularly at a regular angular pitch and forming respective seating surfaces coplanar with each other and belonging to a common reference plane, a wheel being brought into seating contact on these surfaces with a portion of its front flange, the wheel being approximately coaxial with a central reference axis of the device perpendicular to the reference plane; determining using distance sensing means the radial coordinates of a first plurality of points of a common surface of the flange, the points of this plurality being identified by moving the sensing means radially relative to the central reference axis along respective directions radial to this axis until the flange is intercepted, and c

Abstract: Equipment for mechanical machining, especially the turning and drilling of mechanical workpieces, such as light alloy wheels and the like, includes at least one turning unit with a double chuck to support the workpieces being machined and a turning head designed to work in association with one or other of the chucks alternately. At least one first workpiece loading/unloading device can be used for moving the workpieces being machined on one or other of the chucks so as to bring about loading/unloading of the workpieces from one of the chucks at the same time as mechanical machining is being carried out on the other chuck. The equipment further includes at least one drilling unit operatively associated with the turning unit and including at least one first drilling head combined with at least one corresponding first workpiece-holding device and at least one second device for loading/unloading parts to move parts being machined in the drilling unit.

Abstract: A device is provided for clamping workpieces which are subjected to mechanical machining including a device for centering the workpiece on a workpiece holder with respect to an axis (X) about which the holder is caused to rotate during mechanical machining of the workpiece, and a device for clamping the workpiece relative to the workpiece holder, in which the clamping device includes at least one member supporting the workpiece secured to the rotating holder and releasably secured to the workpiece by magnetic attraction.

Abstract: A device is described for clamping parts in a centered position which are to be machined, including a device for centring the part on a worktable including at least three centering elements with a regular angular spacing. Each centering element is displaceable along a predetermined radial direction (Y), and there are actuating devices associated with each respective centering element for operational actuation thereof in the translational movement along the corresponding radial direction (Y).

Abstract: A method is provided for centring semi-finished parts which are to undergo mechanical machining, including the steps of preparing a centring device including three centring elements spaced apart angularly at a regular pitch, capable of coming into contact with the semi-finished part to move it into a centred position, each of the centring elements being movable along a preset radial direction (Y), the radial directions intersecting at geometrical axis (X) for centring the part.

Abstract: A method of machining mechanical workpieces, in particular of machining the braking surfaces (2,3) of a brake disc (1) for vehicles is described and comprises the steps of loading the workpiece onto a work station (8) and clamping the workpiece in a median reference plane (A) between the opposed braking surfaces (2,3), as well as defining the excess material material thicnness to be removed from each of the said surfaces, with respect to the positioning coordinates of the said plane in relation to a system of working axes of the station, to achieve a balanced, centred division of excess metal removed from the said surfaces (2,3).

Abstract: A method for processing products having low tolerances by removing shavings, including a processing step for finishing the workpiece being processed (2), comprises a step for detecting temperature (T) of the workpiece being processed (2) before or at the same time as the finishing step and a step for adjusting the finishing depths in accordance with the detected temperature value.

Abstract: Equipment for mechanical machining, especially the turning and drilling of mechanical workpieces, such as light alloy wheels and the like, includes at least one turning unit with a double chuck to support the workpieces being machined and a turning head designed to work in association with one or other of the chucks alternately. At least one first workpiece loading/unloading device can be used for moving the workpieces being machined on one or other of the chucks so as to bring about loading/unloading of the workpieces from one of the chucks at the same time as mechanical machining is being carried out on the other chuck. The equipment further includes at least one drilling unit operatively associated with the turning unit and including at least one first drilling head combined with at least one corresponding first workpiece-holding device and at least one second device for loading/unloading parts to move parts being machined in the drilling unit.

Abstract: Manipulators (M1, M2) capable of gripping a workpiece to be machined are mounted on the tool-carrying slide or slides or on the so-called cross slide or slides (S) of a vertical lathe. The manipulators are preferably located outside the tool stations. The travel movements of the slide or slides are adapted so that, after machining of the workpiece located on the chuck (G) has been completed, a manipulator (M2) is positioned on the chuck in order to take hold of and extract the workpiece, while the other manipulator (M1) is positioned, simultaneously, in a loading station (S1) in order to take hold of and raise a new workpiece to be machined. With successive displacements of the slide or slides, the manipulator (M2) with the machined workpiece is positioned in a station (S2) for receiving and removing the workpiece itself, while the other manipulator (M1) is simultaneously positioned on the chuck (G) in order to insert the new workpiece in the latter.