Abstract: Gauge for the dimensional checking of a piece being machined, comprising a movable gauging arm fixed to an outer casing, through a pin and a bushing. A spring coupled to the arm and to the outer casing acts on the pin and the bushing for univocally defining an axis, stationary with respect to the casing, for the rotation of the gauging arm.

Abstract: A manual plug comparator for checking the diameter of holes of mechanical parts, comprising a support, a movable measurement unit and a protective casing. The movable measurement unit comprises two movable arms respectively bearing feeler elements which come into contact with the parts to be checked. A position transducer detects the position of the movable arms and is connected by an electric cord to an electric supply, detection and indication group. A base plate fastened to the casing has an opening adapted to permit the introduction of air under pressure into the plug. The flow of air passes through the inside of the plug, removing any foreign matter and emerges through other openings provided in the support.

Abstract: A gauge for the dimensional checking of mechanical pieces comprises an outer casing, an armset fixed to the casing and having a gauging arm movable along two opposite directions, a feeler carried by the gauging arm for contacting the piece to be checked, a limiting device for adjustably limiting the displacements of the gauging arm along the directions, a spring cooperating with the gauging arm for urging the feeler against the piece, and a device for adjusting the force applied by the spring. The limiting device includes a member, fixed to the casing, which defines a first abutment surface for limiting the displacements of the gauging arm along one of the directions, and a screw passing through the hole of the gauging arm. The screw is coupled to the member and defines a second abutment surface, adjustable with respect to the first abutment surface.

Abstract: An automatic gauge for checking diameters of holes of a mechanical piece comprising plug gauges having protection nosepieces adapted to enter into the holes, a slide carrying the plug gauges, and a hydraulic device for displacing the slide; the contact between the nosepiece of a plug gauge and the piece, caused by errors in the machining or in the positioning of the piece, making a circuit which controls stopping of the slide for preventing the plug gauges from being damaged.

Abstract: A gauging head for checking linear dimensions of mechanical pieces comprising a single member including a movable arm, a support for the movable arm, and a fulcrum for pivoting movements of the arm with respect to the support. The member also defines seats for an inductive transducer coupled to the arm and the support, the transducer being sealed by a resilient gasket.

Abstract: A gauge for checking linear dimensions of mechanical parts comprises a support, a movable gauging arm, a transducer coupled to the movable arm and the support, and a helical spring defining a longitudinal geometrical axis and having a first end in abutment with the movable arm and the second end in aubtment with a movable element of an adjustment device for adjusting the force applied by the spring to the gauging arm, the device comprising a screw coaxial to the spring and arranged within the spring coils, and a stanchion which controls a translation movement of the movable element along an axis substantially coinciding with the spring axis, translation movement of the movable element changing the axial length of the spring and, consequently, the force it applies to the gauging arm.

Abstract: The apparatus includes a frame, a plate coupled to a shaft for making the piece to be checked rotate with respect to the frame and a reference plate resting on the piece for defining a mechanical reference for the checking of the piece. A supporting device couples the reference plate to the frame and permits rotation of the reference plate together with the piece. Measuring heads, fixed to the frame, include feeler elements which contact - without any sliding motion - the supporting device, for indirectly detecting the position of the mechanical reference during the piece rotation.

Abstract: A gauge for checking linear dimensions of mechanical pieces, comprising a differential transformer transducer including a first member, substantially cylindrical, which supports a core, a second member, substantially cylindrical, which houses electric windings, and a sealing bellows having its ends fixed to the first and the second member, respectively.The two members are mutually movable and the electric windings provide a measurement signal representative of the position of the core with respect to the second member.The ends of the bellows are coupled to annular seats defined in the first and the second members, with a coupling which generates substantially compressive stresses at said ends.

Abstract: A plug comparator for checking the diameter of holes in mechanical parts, having a movable measurement unit comprising two movable arms bearing respective feeler elements which come into contact with the part to be checked. A position transducer detects the position of the movable arms and is connected by an electrical cord to an electrical supply and indication group. The movable unit comprises a single member of stamped plate having two portions which constitute the arms. The two portions have two sets for the ends of a spring which act on the arms, two seats for two mutually movable elements of the transducer, seats for the feeler elements and for devices for locking the feeler elements, and stop elements which limit the movements of the arms towards each other.

Abstract: A manual plug comparator for verifying the diameter of holes of mechanical parts, having a central support plate which supports a movable measurement unit, a protective and centering casing and a handle. The movable measurement unit comprises two movable arms each bearing a feeler, which feelers come into contact with the part to be checked. An electric cord terminating in a connector makes it possible to connect a position transducer which notes the position of the movable arms to an electrical supply, detection and indication group. A cord-holder device is fastened to one end of the handle in a removable manner. The handle has an opening which, after the removal of the cord-holder device and the detachment of the handle from the support plate, makes it possible completely to remove the handle from the cord and the connector.

Abstract: A machine for sorting workpieces belonging to different classification classes, including a frame, a loading device, a plurality of outputs for the different classification classes, conveyor apparatus to direct the workpieces to the relevant outputs and control apparatus adapted to receive signals responsive to the classes of workpieces in order to actuate the conveyor apparatus, said conveyor apparatus including a first slide moving from a position for loading the workpiece to be sorted to a position adjacent to an output corresponding to the class of the workpieces, said slide including workpiece stops adapted to allow the unloading of the workpiece onto a relevant output after its positioning in the position adjacent to the output, the control apparatus being adapted to realize the positioning of the slide in the loading and unloading positions.

Abstract: A gauging head for checking linear dimensions of mechanical pieces includes a tubular outer casing having a square perimeter cross-section and an arm-set with a flat support element fixed to an internal side of the tubular casing. A movable arm supported by the support element passes through one of the ends of the tubular casing and carries a contact feeler movable substantially along a direction perpendicular to a longitudinal geometrical axis defined by the casing.

Abstract: Manual plug comparator for verifying inside diameters of mechanical parts comprising a perforated support plate, a first member of substantially U shape fastened to the plate and a second member having a base fastened to the first member, two elastically yieldable sections and two arms which are movable due to the deformations of the elastically yieldable sections. The two arms bear the elements of a position transducer and, at their free ends respective feelers adapted to touch the part to be checked.

Abstract: The apparatus includes measuring heads having contacts cooperating with points of the openings of the cage and a processing unit connected to the measuring heads. The processing unit provides signals indicating the positions of the central points of the openings, determines a reference geometric plane which is the plane nearest, on the average, to the central points and determines the distances of the central points from the reference geometric plane.

Abstract: The invention relates to a method and apparatus for checking the bell member of a constant velocity joint, wherein the joint member, positioned by reference devices, is checked by gauging devices cooperating with the ball races.Processing circuits provide signals representative of the positions of the centers of the ball races, in an equatorial plane, for determining the dimensions of the bell member with reference to the center of a circumference approximating the centers of the ball races.

Abstract: An apparatus for checking linear dimensions of shafts comprising, a frame, a centering means connected to the frame to define a horizontal axis for supporting the shaft, a supporting device fixed to the frame, measuring groups adapted to cooperate with the shaft surfaces and connection means which connect the measuring groups to the supporting device. The connection means are adapted to allow the measuring groups to move towards and away from the shafts, along planes perpendicular to the horizontal axis, from up to down and vice versa.

Abstract: A gauge for checking linear sizes of mechanical parts including a handle, a nose-piece, an integral body defining two movable arms and fulcrum devices for rotational displacements of the arms, and a support plate coupled to the handle, the nose-piece and the integral body.The support plate has the form of a ring plate with two parts protruding towards the interior for defining two reference surfaces adapted to limit the opening stroke of the movable arm.

Abstract: Apparatus for checking linear geometric dimensions of the raceway of a ball bearing ring. A base supports a rotatable plate, which makes a ring rotate about its geometrical axis, and a mobile arm which applies to gauging heads a reciprocating motion along the transversal direction of the raceway. The gauging heads have relevant feelers which, due to the motion of the gauging heads and the rotation of the ring, contact the raceway surface along lines having an oscillating form. The gauging heads provide signals responsive to the radial dimensions of the ring in correspondence with the raceway. The signals provided by the gauging heads are processed by electronic circuits for obtaining signals responsive to said geometric dimensions, for example signals indicating the raceway minimum diameter.

Abstract: An apparatus including two gauging heads, each having a feeler adapted to cooperate with a cylindrical surface of a part to be checked, and control devices for moving the feelers into contact with the cylindrical surface and for obtaining a scanning motion of the feelers as a relative displacement of the measurement axis passing through the feelers with respect to the geometrical axis of the cylindrical surface.The apparatus is particularly adapted for controlling small diameters, in a static as well as in a dynamic condition.

Abstract: A gauge for checking linear dimensions of pieces, including a support, an arm, movable with respect to the support, which carries a feeler for contacting the piece to be checked, and a position transducer for providing a signal responsive to the position of the arm.The arm is coupled to the support through an element including a bent portion having a flat chamfer on the convex side. The chamfer defines, in the bent portion, a thin section, resiliently flexible, which acts as a fulcrum for permitting rotational movements of the arm.