Wire electric discharge machine and calculation method for wire support positions of wire electric discharge machine
AssigneeFanuc Corporation
InventorsRyou Nishikawa, Shouji Takahashi
Life of this patent
Estimating the term…
Abstract
One arbitrary point on an upper surface of a workpiece and two points at arbitrary heights on a tapered section of the workpiece are measured using a contact detector disposed on an upper wire guide of a wire electric discharge machine to calculate the shape accuracy and tapered angle. Based on the calculated data, the upper and lower wire guide support positions of the upper and lower wire guides are calculated. Using the calculated upper and lower wire guide support positions, electric discharge machining is performed on the workpiece.
Claims6
A wire electric discharge machine that performs machining by moving a wire electrode stretched between an upper wire guide and a lower wire guide relative to a table on which a workpiece is placed, the wire electric discharge machine comprising:
- a wire guide moving means for slanting the wire electrode at a predetermined angle;
- a contact detector disposed on the upper wire guide;
- a means for calculating a taper angle of a tapered section of a tapered workpiece mounted on the table, based on positions obtained through measurement, by the contact detector, of two points at arbitrary heights on the tapered section;
- and
- a means for calculating wire support positions of the upper wire guide and the lower wire guide that give a target taper angle and a target shape dimension, based on a position of any one of the two points measured, the calculated taper angle, the upper surface position of the workpiece obtained through measurement by the contact detector, and a position at which the tapered section and the upper surface of the workpiece intersect when there is no machining error.
A wire electric discharge machine that performs machining by moving a wire electrode stretched between an upper wire guide and a lower wire guide relative to a table on which a workpiece is placed, the wire electric discharge machine comprising:
- a wire guide moving means for slanting the wire electrode at a predetermined angle;
- a contact detector disposed on the upper wire guide;
- a means for calculating a taper angle of a tapered section of a tapered workpiece mounted on the table, based on positions obtained through measurement, by the contact detector, of two points at arbitrary heights on the tapered section;
- and
- a means for calculating wire support positions of the upper wire guide and the lower wire guide that give a target taper angle and a target shape dimension, based on a position of any one of the two points measured, a position of the tapered section at a height of the position of the one of the two points when there is no machining error, and the calculated taper angle.
A method for calculating wire support positions of a wire electric discharge machine that performs machining by moving a wire electrode stretched between an upper wire guide and a lower wire guide relative to a table on which a workpiece is placed, the method comprising the steps of:
- performing tapering in accordance with a machining program;
- measuring two arbitrary points on a tapered section using a contact detector disposed on the upper wire guide;
- calculating an angle of the tapered section based on positions of the two measured points;
- and
- calculating wire support positions of the upper wire guide and the lower wire guide that give a target taper angle and a target shape dimension based on a position of any one of the two measured points, the calculated taper angle, and a position at which the tapered section and an upper surface of the workpiece intersect when there is no machining error.
A method for calculating wire support positions of a wire electric discharge machine that performs machining by moving a wire electrode stretched between an upper wire guide and a lower wire guide relative to a table on which a workpiece is placed, the method comprising the steps of:
- performing tapering in accordance with a machining program;
- measuring two arbitrary points on a tapered section using a contact detector disposed on the upper wire guide;
- calculating an angle of the tapered section based on positions of the two measured points;
- and
- calculating wire support positions of the upper wire guide and the lower wire guide that give a target taper angle and a target shape dimension based on a position of any one of the two measured points, a height of the tapered section when there is no machining error at a height of the position of the one of the two measured points, and the calculated taper angle.
Dependencies are inferred from the claim text.