US 4,393,592 AGranted

Gauge for checking linear dimensions of mechanical pieces

AssigneeFinike Italiana Marposs S.p.A.

InventorCarlo Dall'Aglio

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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.

Claims9

Dependent claims

A gauge for the dimensional checking of mechanical pieces, including supporting means;

a gauging arm;
means for connecting the arm to the support means adapted to enable movement of the arm;
a feeler, fixed to the movable arm to contact the surface of the piece to be checked;
a spring including coils defining a geometrical axis, the spring having a first end cooperating with the gauging arm;
and an adjustment device with a movable element cooperating with a second end of the spring, for adjusting the force applied by the spring to the gauging arm, wherein said adjustment device includes a control device, coupling means to couple the control device to the support means while allowing the rotation of the control device about said axis, the control device being coaxial with the spring and arranged substantially inside the coils of the spring, the adjustment device further including a member fixed to the support means and that cooperates with the movable element in order to prevent it from rotating while permitting its axial translation along said axis, the control device being coupled to the movable element to control said axial translation.

2 more elements

Dependencies are inferred from the claim text.