US 5,326,198 AGranted

Micrometric device for finishing bores

AssigneeIndustrias Romi S/A

InventorGiordano Romi

Life of this patent

Estimating the term…

Loading patent…

Abstract

The invention relates to an improved micrometric device for finishing bores of the type having a substantially cylindrical body in the interior of which are mounted displacement devices that actuate on a tool holder displaceable in the same direction as the radial component of the work force. The displacement devices are provided with a backlash suppression system and a movement transmission mechanism. The movement transmission mechanism is provided with a graduated drum coaxially mounted to a micrometric screw. The micrometric screw is axially and radially supported in relation to the body of the micrometric device by a support system. In accordance with the invention, on an upper threaded extension of micrometric screw, a cylindrical rod is mounted that incorporates at its upper end, an oblique portion or extension set off by an angle in relation to the longitudinal axis of micrometric screw. The oblique extension is lodged in a hole of a crossbeam which is displaced on guideways and balls such that a radial displacement of the tool holder is possible.

Claims15

Dependent claims

An improved micrometric device for finishing bores, comprising

a substantially cylindrical body having an interior,
a micrometric screw arranged in said interior, said micrometric screw having an axis of rotation and a threaded extension,
displacement means for displacing a tool holder on which a cutting tool is arranged, said displacement means comprising a backlash suppression system and movement transmission means,
said movement transmission means comprising a graduated drum arranged coaxially to said micrometric screw, and support means for axially and radially supporting said micrometric screw in relation to said body, said transmission means further comprising a cylindrical rod arranged in said body around said threaded extension of said micrometric screw, said cylindrical rod having an oblique portion or extension at an upper end thereof, said oblique extension being inclined at an angle of inclination in relation to an axis of said cylindrical rod, said movement transmission means further comprising a movable crossbeam on which the tool holder is mounted, said oblique extension being slidably lodged in said movable crossbeam such that movement of said micrometric screw in the direction of its axis of rotation causes the tool holder to be displaced in a perpendicular direction to the axis of rotation of said micrometric screw.

1 more element

Dependencies are inferred from the claim text.