Abstract:
A linear gauging head, for example a “cartridge” head, includes a casing (1), a spindle (11), movable with respect to the casing along a longitudinal axis, a feeler (13′) coupled to a first end of the spindle, and a differential position transducer with windings (15, 16, 17), stationary with respect to the casing, and a core (18) coupled to a second end of the spindle. The spindle includes longitudinal grooves (12) and is guided by means of an axial bearing (22) with rolling elements (23) that cooperate with the grooves for allowing the spindle to translate with respect to the casing along the longitudinal axis, and concurrently prevent it from rotating about said axis.
Abstract:
A probe for checking linear dimensions of mechanical pieces comprises a support casing, an arm movable with respect to the casing and having a first element, a second element and an intermediate third element, a feeler fixed to the first element of the movable arm for contacting the piece to be checked, and detecting means for providing a signal depending on the position of the movable arm. The intermediate element is removably coupled to the first element and the second element and defines a section adapted to break as a consequence of blows against the feeler and the first element of the movable arm occurring along any direction.
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 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 checking apparatus, for example a plug gauge, for checking diameters and/or geometrical features of mechanical parts includes a support structure (1) and checking means (20,21) coupled to the support structure, with mutually movable feelers (36) for contacting the surface of the part and transducer means for providing electrical signals. The support structure includes at least two studs (11,12) that achieve a guide along a longitudinal axis, and the checking means are coupled to the studs in a removable and adjustable way along such longitudinal axis. Several checking means can be coupled to the studs. A particular embodiment foresees three flanked studs and checking means coupled to pairs of adjacent studs. An adapting system allows the feelers to self-center on the part to be checked, for example the surface of a hole.
Abstract:
An apparatus is disclosed for checking the geometric characteristics of mechanical objects having rotational symmetry, such as shafts or bushings. A longitudinal support element defines a longitudinal axis and first reference surfaces, at least one modular coupling element is removably coupled to, and is adjustable longitudinally along, the longitudinal support element and provides second reference surfaces which cooperate with the first reference surfaces to align a linear guide portion transversely of the longitudinal axis. A fastener secures the modular coupling element, which removably supports a gauging device, to the longitudinal support element and a locking/unlocking device cooperates with the gauging device and guide portion for locking the gauging device to the modular coupling element.
Abstract:
A cartridge gauging head for checking linear dimensions of parts comprises a tubular casing, a shaft axially movable with respect to the casing, a feeler fixed at an end of the shaft for contacting the part to be checked, a transducer for providing a signal depending on the mutual positions of the shaft and the casing, and a guide member for guiding the axial displacements of the shaft. The guide member includes an intermediate portion coupled to the casing and two end portions adapted to cooperate with the shaft for guiding it.
Abstract:
Electronic gauge for checking linear dimensions of mechanical pieces, comprising a casing, at least a movable arm, a position transducer and a retraction device. The retraction device includes an electromagnet fixed to an element supported by the casing, a flat armature adjustably fixed to the movable arm and a positive stop fixed to the armature and adapted to abut against another positive stop fixed to the electromagnet.
Abstract:
A checking apparatus, for example a plug gauge, for checking diameters and/or geometrical features of mechanical parts includes a support structure (1) and checking means (20,21) coupled to the support structure, with mutually movable feelers (36) for contacting the surface of the part and transducer means for providing electrical signals. The support structure includes at least two studs (11,12) that achieve a guide along a longitudinal axis, and the checking means are coupled to the studs in a removable and adjustable way along such longitudinal axis. Several checking means can be coupled to the studs. A particular embodiment foresees three flanked studs and checking means coupled to pairs of adjacent studs. An adapting system allows the feelers to self-center on the part to be checked, for example the surface of a hole.