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US 4,124,927 AGranted
Automatic lathe with rotary cutter
OwnerJess F. Sorensoninventor
Life of this patent
Estimating the term…
Abstract
A sliding headstock automatic lathe includes a cutting tool which rotates in the same direction as the workpiece and at a speed precisely twice that of the workpiece, resulting in two or more flat cuts on the workpiece. The cutting tool is rotated by a connecting shaft driven by the same drive means which also rotates the workpiece. The connecting shaft is telescoping to accommodate the relative longitudinal movement of the lathe spindle nose and is pivotally attached between the drive means and the cutting tool to allow lateral movement of the cutting tool without slippage.
Claims15
A lathe comprising:
- a base;
- sliding headstock means mounted on said base for reciprocating movement longitudinally of the base;
- collet means on said headstock for gripping a workpiece;
- first drive means reciprocating with said headstock for rotating said collet and workpiece in a first direction;
- a vertical support mounted on said base forward of the sliding headstock;
- a bushing in said vertical support in axial alignment with said collet for supporting the rotating workpiece forward of the collet;
- feed means for recipriocating said headstock to advance said rotating workpiece through said bushing;
- a plurality of tools mounted adjacent the forward face of said vertical support above the workpiece, each said tool being selectively engageable with the rotating workpiece;
- a rotatable cutting tool mounted adjacent said bushing adjacent the forward face of said vertical support by mounting means permitting selective reciprocation of said rotatable tool toward and away from said workpiece, said rotating tool being located on the side of the workpiece which is moving upward as the workpiece rotates;
- a first gear coaxial with said rotatable cutting tool and fixed thereto for rotation therewith, said first gear being slightly smaller in diameter than the cutting tool;
- second and third gears disposed outwardly from said first gear and forming a drive train for driving said first gear;
- second drive means disposed outwardly from said first drive means;
- means operatively connecting said first and second drive means for reciprocation together and rotation together in the same direction;
- and
- an extensible shaft connecting said second drive means to said third gear for rotating said rotatable tool in said first direction at precisely an integer ratio relative to the rate of rotation of said workpiece and for permitting reciprocation of said second drive means axially relative to said third gear.
12 more elements
A lathe comprising:
- a base;
- headstock means mounted on said base for reciprocating movement longitudinally on the base;
- collet means on said headstock for gripping a workpiece;
- drive means reciprocating with said headstock for rotating said collet and workpiece;
- a rotatable cutting tool mounted on said base;
- feed means for reciprocating said headstock means to advance said workpiece adjacent said tool as said workpiece rotates;
- a connecting rod having one end connected to said tool;
- means attached between the other end of said connecting rod and said drive means for rotating said tool at precisely an integer ratio relative to the rate of rotation of said rod while accommodating reciprocation of said drive means relative to said cutting tool;
- a pulley means attached to one end of said tool adjacent the said drive means and fixed against lateral movement relative to said headstock;
- belt means operatively connecting said drive means and said pulley means;
- holder means rotatably mounting said cutting tool, and mounted for lateral movement on said base perpendicular to the collet axis for advancing and retracting the cutting tool, said holder means attached to the other end of said connecting rod to rotate said cutting tool;
- a cutting tool gear mounted in said holder means;
- a cutting gear shaft rotatably responsive to said cutting tool gear;
- a gear sleeve mounted on said cutting gear shaft, adjacent one side of said cutting tool gear;
- a locking cap mounted on said cutting gear shaft adjacent the other side of said cutting tool gear;
- and
- an output bearing cylindrically mounted on said gear sleeve and said locking cap adjacent said cutting tool gear, said output bearing having a diameter greater than the outside diameter of said cutting tool gear.
14 more elements
A lathe comprising:
- a base;
- head stock means mounted on said base for reciprocating movement longitudinally on the base;
- collet means on said headstock for gripping a workpiece;
- drive means reciprocating with said headstock for rotating said collet and workpiece;
- a rotatable cutting tool mounted on said base;
- feed means for reciprocating said feedstock means to advance said workpiece adjacent said tool as said workpiece rotates;
- a connecting rod having one end connected to said tool;
- means attached between the other end of said connecting rod and said drive means for rotating said tool at precisely an integer ratio relative to the rate of rotation of said rod while accommodating reciprocation of said drive means relative to said cutting tool;
- a pulley means attached to one end of said rod adjacent the said drive means and fixed against lateral movement relative to said headstock;
- belt means operatively connecting said drive means and said pulley means;
- holder means rotatably mounting said cutting tool, and mounted for lateral movement on said base perpendicular to the collet axis for advancing and retracting the cutting tool, said holder means attached to the other end of said connecting rod to rotate said cutting tool;
- a cutting tool gear mounted in said holder means;
- a cutting gear shaft rotatably responsive to said cutting tool gear;
- a gear sleeve mounted on said cutting gear shaft, adjacent one side of said cutting tool gear;
- a locking cap mounted on said cutting gear shaft adjacent the other side of said cutting tool gear;
- and
- an output bearing cylindrically mounted on said gear sleeve and said locking cap adjacent said cutting tool gear, said output bearing having a diameter greater than the outside diameter of said cutting tool gear, said locking cap has an outside diameter as great as the outside diameter of said cutting tool gear, said locking cap being removable from said other side of said cutting tool gear, exposing said cutting tool gear to facilitate removal of said cutting tool gear.
14 more elements
A lathe comprising:
- means for gripping and rotating a workpiece;
- a rotatable cutting tool mounted adjacent said workpiece and having a cutting edge;
- means for rotating said cutting tool at precisely an integer ratio relative to the rate of rotation of said workpiece, said cutting edge of said cutting tool alternately rotating into and out of engagement with said workpiece;
- said cutting tool including:
- a cutting tool gear;
- a cutting gear shaft rotatably responsive to said cutting tool gear;
- a gear sleeve mounted on said cutting gear shaft, adjacent one side of said cutting tool gear;
- a locking cap mounted on said cutting gear shaft adjacent the other side of said cutting tool gear;
- and
- an output bearing cylindrically mounted on said gear sleeve and said locking cap adjacent said cutting tool gear, said output bearing having a diameter greater than the outside diameter of said cutting tool gear.
7 more elements
Dependencies are inferred from the claim text.