Ring gauge for checking external dimensions
AssigneeFinike Italiana Marposs S.p.A.
InventorsGuido Golinelli, Mario Possati
Life of this patent
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Abstract
A ring gauge for checking external diametral dimensions comprising an arm-set essentially consisting of an integral member including two arc-shaped arms, two resiliently deformable portions adapted to define fulcrums for the rotation of the arms and an intermediate portion coupled to a support. Two feelers are adjustably fixed to the arms, approximately at intermediate points of their longitudinal development. The elements of a transducer are fixed at the free ends of the arms.
Claims20
A ring gauge for checking external diameters of parts, comprising:
- support means;
- two movable measuring arms having first ends movably coupled to the support means for performing angular displacements, the measuring arms having substantially oppositely arcuated shapes and defining relevant free ends;
- two feelers respectively fixed at substantially intermediate sections of the measuring arms for contacting the surface of the part to be checked;
- and
- transducer means including two elements respectively fixed at the free ends of the measuring arms, for providing a signal depending on the mutual positions of the feelers.
A ring gauge for checking external diameters of parts, comprising:
- support means;
- an integral member including a first, intermediate portion fixed to the support means, second and third portions resiliently deformable for defining two parallel geometric axes of rotations, and fourth and fifth portions respectively connected to the second and third portions, the fourth and fifth portions defining two oppositely arcuated measuring arms angularly movable about said axes of rotation, each of the movable measuring arms having a free end;
- two feelers respectively coupled to the arcuate measuring arms, substantially at intermediate points thereof, for contacting diametrally opposite points of the part to be checked;
- and
- a position transducer including two elements respectively coupled at the free ends of the measuring arms.
A ring gauge for checking external diameters of parts, comprising:
- a substantially annular support element;
- an integral member including a first, intermediate portion fixed to the annular support element, second and third portions connected at opposite ends of the first portion, the second and third portions being resiliently deformable for defining two parallel geometric axes of rotation, and fourth and fifth portions respectively connected to the second and third portions, the fourth and fifth portions defining two measuring arms, wherein the measuring arms have substantially opposite semicircular shapes and relevant free ends and are angularly movable about said axes of rotation;
- two feelers respectively fixed to the measuring arms, approximately midway of the longitudinal development of the relevant arm, for contacting diametrally opposite points of the part to be checked;
- a position transducer including two elements respectively coupled at the free ends of the measuring arms;
- displacement limiting means including stop elements adapted to cooperate with the free ends of the measuring arms for limiting the angular displacements thereof;
- a protection cover fixed with respect to the annular support element, the cover defining a surface encircling said integral member;
- and
- protection and centering means including a protection and centering element, substantially annular, this element being arranged between the measuring arms and defining openings for the passage of the feelers.
Dependencies are inferred from the claim text.