Machine tool and workpiece flattening method
AssigneeFanuc Corporation
InventorTakaaki Fujii
Life of this patent
Estimating the term…
Abstract
A machine tool includes one tip arranged on the spindle at a position that faces the table, a cutting edge position storing unit that stores therein multiple measured values that are obtained by performing measurement of the position of the tip at least two times in a state where the spindle is set at at least one phase and the tip is positioned at an identical point, a spindle tilt angle calculating unit that calculates a tilt angle of the spindle with respect to an XY-plane, based on the multiple measured values, and a coordinate system rotation unit that rotates the XY-plane about at least one of X-axis and Y-axis, based on the tilt angle of the spindle calculated by the spindle tilt angle calculating unit.
Claims15
A machine tool comprising:
- a table having a workpiece setting surface to which a workpiece is fixed;
- a spindle equipped with a tool configured to perform flattening on the workpiece fixed to the table;
- a workpiece flattening control unit configured to perform flattening on the workpiece using the tool in a manner that machining areas of the tool on a surface of the workpiece partially overlap one another;
- at least one contact element arranged on the spindle at a position that faces the table;
- a contact-element position storing unit configured to store multiple measured values that are obtained by performing measurement of a position of the contact element at least two times in a state where the spindle is set at at least one phase and the contact element is positioned at an identical point;
- a spindle tilt angle calculating unit configured to calculate a tilt angle of the spindle with respect to an XY-plane for machining, based on the multiple measured values stored in the contact-element position storing unit;
- and,
- a coordinate system rotation unit configured to rotate the XY-plane about at least one of X-axis and Y-axis, based on the tilt angle of the spindle calculated by the spindle tilt angle calculating unit,
- wherein the workpiece flattening control unit machines a flat surface of the workpiece along the XY-plane rotated by the coordinate system rotation unit.
A workpiece flattening method for, in flattening a workpiece by use of:
- a table having a workpiece setting surface to which the workpiece is fixed;
- a spindle equipped with a tool configured to perform flattening on the workpiece fixed to the table;
- and the tool, performing machining in a manner that machining areas of the tool on a surface of the workpiece partially overlap one another, comprising:
- a measured-value storing step of storing multiple measured values that are obtained by performing at least two times of measurement of a position of at least one contact element arranged on the spindle at a position that faces the table, in a state where the spindle is set at at least one phase and the contact element is positioned at an identical point;
- a spindle tilt angle calculating step of calculating a tilt angle of the spindle with respect to an XY-plane for machining, based on the multiple measured values stored;
- and
- a coordinate system rotating step of rotating the XY-plane about at least one of X-axis and Y-axis, based on the tilt angle of the spindle calculated,
- wherein a flat surface of the workpiece is machined along the XY-plane rotated by the coordinate system rotating step.
Dependencies are inferred from the claim text.