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US 7,086,315 B1Granted
Straddle-cutting tool
OwnerRandy Beiserinventor
Life of this patent
Estimating the term…
Abstract
A straddle-cutting device for machining a pair of parallel surfaces on a rotating workpiece in a single cut as the cutting tool is advanced over the workpiece. Apparatus is provided for biasing the cutting tools using a stack of spring washers and a pneumatic power cylinder.
Claims10
Apparatus for machining parallel surfaces on a rotating workpiece, comprising:
- a metal-cutting tool, and means including a jaw for advancing the metal-cutting tool toward a material-removal position of a workpiece;
- a base;
- a shaft mounted on the base for axial motion;
- a power cylinder mounted on the base, the power cylinder having a movable piston rod;
- a fulcrum mounted on the base;
- a lever mounted on the fulcrum and engageable with the shaft for moving the shaft in a first axial direction, the lever being engageable with the piston rod to be pivoted about said fulcrum as the piston rod is moved in a power stroke;
- a spring washer having a central opening supported on said shaft to bias the shaft in an opposite axial direction;
- and
- structure connecting the shaft to the metal-cutting tool to move same away from the material-removal position, against the bias of the spring washer as the lever moves said shaft in said first axial direction.
6 more elements
Apparatus for machining parallel surfaces on a rotating workpiece, comprising:
- a rotating workpiece support;
- a metal-cutting tool, and means for advancing the metal-cutting tool along a line of motion perpendicular to a face of a workpiece chucked in said rotating workpiece support, comprising:
- a base;
- a shaft mounted on the base for axial motion;
- a power cylinder having a movable piston rod;
- a fulcrum mounted the base;
- a lever mounted on the fulcrum and having a first end engageable with the shaft to move the shaft in a first axial direction, the lever having a second end engageable with the piston rod of the power cylinder to pivot about said fulcrum as the piston rod is being moved in a power stroke;
- a plurality of spring washers supported on said shaft to bias the shaft in an opposite axial direction;
- and
- structure connecting the shaft to the metal-cutting tool to move same toward a workpiece as the lever moves said shaft in said first axial direction.
7 more elements
Apparatus for machining parallel surfaces on a rotating workpiece, comprising:
- a metal-cutting tool support;
- a rotating workpiece support, and means for advancing the metal-cutting tool support toward a workpiece in a workpiece-cutting motion;
- a base;
- a shaft mounted on the base for axial motion;
- a power cylinder having a movable piston rod connected to the shaft to move the shaft in said axial motion in a first axial direction;
- a stack of spring washers engaging the shaft to bias the shaft in an opposite axial direction;
- and
- a jaw connecting the shaft to the metal-cutting tool to move same either toward or away from a workpiece cutting position as the shaft is moved in either said first axial direction or said opposite axial direction.
5 more elements
Dependencies are inferred from the claim text.