Methods for preventing notch formation in, and/or extending the useful life of, cutting tools for turning, and associated systems
AssigneeCeleritive Technologies, Inc.
InventorsGlenn Coleman, Joseph McChesney, Evan C. Sherbrooke
Life of this patent
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Abstract
Technology for turning selected portions of a workpiece by a cutting tool is described. The described technology can provide methods and apparatuses for turning areas of a part so that corner strikes are avoided upon material entry, burr formation upon material exit is eliminated or significantly reduced, and/or the instantaneous cut depth continuously changes to avoid notch formation. The resulting superior machining conditions can enable more aggressive machining parameters to be used in the tool path, thereby resulting in reduced machining time and load.
Claims32
A method for turning selected portions of a workpiece by a cutting tool of a machine, the machine having a processor and a memory, the method comprising:
- determining a location of a floor within the workpiece;
- performing a first cut descending towards the floor in a first direction;
- performing a second cut descending towards the floor in a second direction different from the first direction;
- and
- performing a third cut parallel to the floor;
- wherein at least one of:
- (a) performing the first cut comprises continuously varying a depth of the first cut
- relative to the floor from a start point of the first cut to an endpoint of the first cut;
- or
- (b) performing the second cut comprises continuously varying a depth of the
- second cut relative to the floor from a start point of the second cut to an endpoint of the second cut.
A method for turning selected portions of a workpiece by a cutting tool of a machine, the machine having a processor and a memory, the method comprising:
- determining a location of a floor within the workpiece;
- determining a point on the floor, a first point on a pocket wall, and a second point on a pocket wall;
- performing a first descending cut from the first point on the pocket wall, passing through the point on the floor, such that the first descending cut is at least approximately tangent to the floor;
- and
- performing a second descending cut from the second point on a pocket wall, passing through the point on the floor such that the second descending cut is at least approximately tangent to the floor.
A method for turning selected portions of a workpiece by a cutting tool of a machine, the machine having a processor and a memory, the method comprising:
- determining a location of a floor within the workpiece;
- performing a first cut descending towards the floor in a first direction;
- and
- performing a second cut parallel to the floor in a second direction different from the first direction;
- wherein performing the first cut comprises continuously varying a depth of the first cut relative to the floor from a start point of the first cut to an endpoint of the first cut.
A system for turning selected portions of a workpiece by a cutting tool, the system comprising:
- a processor;
- and
- a computer-readable medium having instructions that, when executed by the processor, cause the system to:
- receive a location of a floor within the workpiece;
- direct a cutting tool to perform a first cut descending towards the floor in a first direction;
- and
- direct the cutting tool to perform a second cut descending towards the floor in a second direction different than the first direction;
- wherein at least one of:
- (a) directing the cutting tool to perform the first cut comprises directing the cutting tool to exit the workpiece below the floor;
- or
- (b) directing the cutting tool to perform the second cut comprises directing the cutting tool to exit the workpiece below the floor.
A system for turning selected portions of a workpiece by a cutting tool, the system comprising:
- a processor;
- and
- a computer-readable medium having instructions that, when executed by the processor, cause the system to:
- receive a target cutting depth within the workpiece;
- direct a cutting tool to perform a first cut descending towards the target cutting depth in a first direction, wherein performing the first cut comprises continuously varying a depth of the first cut relative to the target cutting depth from a start point of the first cut to an endpoint of the first cut, and
- direct the cutting tool to perform a second cut descending towards the target cutting depth in a second direction different than the first direction.
Dependencies are inferred from the claim text.