US 4,870,560 A · Method of creating NC part program for laser machining

Abstract

Based on an offset direction which indicates whether a laser beam (RB) is offset in a direction to the right side or left side of a travelling direction contained in a motion definition statement, and the direction of a curve at a corner portion (CN) of a laser beam path (b.sub.i,b.sub.i+1), it is determined whether an inner side or outer side of the beam path at the corner is a part (PT). If the inner side of the corner is a part, an NC part program for laser machining is created upon inserting a preset escape path (EP) in the corner portion of the beam path. If the outer side of the corner is a part, an NC part program for laser machining is created in such a manner that similarly set machining conditions prevail in preset machining condition modification intervals.

Claims8

Dependent claims

A method of creating an NC part program for laser machining in which a figure definition statement for defining a figure and a motion definition statement for defining a laser beam path are inputted, and these definition statements are converted, by using an NC data output table, into a laser machining NC part program executable by an NC unit, which NC part program is then outputted, said method characterized by:

presetting an escape path to be inserted at a corner portion, and inputting a motion definition statement created without taking said escape path into consideration;
determining, based on an offset direction which indicates whether the beam is offset in a direction to the right side or left side of a travelling direction contained in the motion definition statement, and the direction of a curve at the corner portion of the beam path, whether an inner side of the beam path at said corner is a part;
and
creating an NC part program upon inserting said present escape path at said corner portion if the inner side of the corner is the part.

1 more element

presetting machining condition modification intervals at a corner portion and machining conditions in said intervals;
creating a motion definition statement without taking said machining condition modification intervals and said machining conditions into consideration;
determining, based on an offset direction which indicates whether the beam is offset in a direction to the right side or left side of a travelling direction contained in the motion definition statement, and the direction of a curve at the corner portion of the beam path, whether an outer side of the beam path at said corner is a part;
and
creating an NC part program in such a manner that said set machining conditions will prevail in said machining condition modification intervals if the outer side of the corner is the part.

2 more elements

Dependencies are inferred from the claim text.

Method of creating NC part program for laser machining

Life of this patent

Method of creating NC part program for laser machining

Life of this patent

Abstract

Claims8