Method for generating control command data for controlling a cnc-lathe
AssigneeAB Sandvik Coromant
InventorsAdam JOHANSSON, Ronnie LOF
Life of this patent
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Abstract
A method for generating control command data for controlling a CNC-lathe to perform a turning operation by means of a turning tool. The method includes the steps of generating control command data for commanding the turning tool to perform a first turning pass and a second turning pass, wherein a maximum cutting depth of the second turning pass is greater than a maximum cutting depth of the first turning pass.
Claims18
A method for generating control command data for controlling a CNC-lathe to perform a turning operation by means of a turning tool, the method comprising the steps of:
- selecting a representation of a metal blank;
- selecting a representation of a turning tool;
- selecting a volume of material from the metal blank to be removed by means of the turning tool, said volume being limited by an inner surface and an outer surface, said metal blank being limited by a peripheral surface, wherein the peripheral surface comprises the outer surface;
- and
- based on the selections above, generating control command data for commanding the turning tool to perform a first turning pass and a second turning pass, wherein the first and second turning passes are parallel or substantially parallel, wherein the first turning pass includes turning of the peripheral surface, and wherein a maximum cutting depth of a second turning pass is greater than a maximum cutting depth for of the first turning pass.
A method for partitioning a volume of material from a representation of a metal blank into sub-portions, said volume being limited by an inner surface and an outer surface, said metal blank being limited by a peripheral surface, and wherein the peripheral surface comprises the outer surface, the method comprising the steps of:
- identifying part surfaces of the inner surface which are cylindrical, conical or planar;
- calculating respective lengths of the part surfaces;
- setting a base line along the part-surface having the greatest length;
- and
- arranging lines within the volume of material, wherein said lines are parallel to the base line, wherein said lines represent borders between adjacent sub-portions, and wherein the base line and an outer line adjacent to the base line is spaced apart by a distance which is greater than a distance between a most outer line and the outer surface.
Dependencies are inferred from the claim text.