Positional relationship measurement method and machining apparatus
AssigneeNational University Corporation Tokai National Higher Education and Research System
InventorEiji Shamoto
Life of this patent
Estimating the term…
Abstract
A control device moves a cutting tool relative to a workpiece to bring the workpiece and the cutting tool into contact with each other, and acquires a coordinate value of a reference point when the workpiece and the cutting tool come into contact with each other. The control device derives an error between the coordinate value thus acquired and a design coordinate value of the reference point at a position where the workpiece and the cutting tool come into contact with each other, and outputs information on the error.
Claims2
A positional relationship measurement method for measuring a relative positional relationship between a workpiece and a tool, the method comprising:
- moving the tool relative to the workpiece to bring the workpiece and the tool into contact with each other;
- acquiring a coordinate value of a reference point when the workpiece and the tool come into contact with each other;
- deriving an error between the coordinate value acquired and a design coordinate value of the reference point at a position where the workpiece and the tool come into contact with each other;
- and
- outputting information on the error, wherein
- in the moving, the workpiece and the tool are brought into contact with each other at the plurality of positions spaced apart from each other in one translation direction that is a radial direction centered on a rotation axis,
- in the acquiring the coordinate value, a plurality of coordinate values of the reference point when the workpiece and the tool come into contact with each other at the plurality of positions are acquired,
- in the deriving the error, a plurality of the errors at the plurality of contact positions are derived, and
- in the outputting, information on the error in the translation direction and information on the error in a rotation direction about the rotation axis are output.
A positional relationship measurement method for measuring a relative positional relationship between a workpiece and a tool, the method comprising:
- moving the tool relative to the workpiece to bring the workpiece and the tool into contact with each other;
- acquiring a coordinate value of a reference point when the workpiece and the tool come into contact with each other;
- deriving an error between the coordinate value acquired and a design coordinate value of the reference point at a position where the workpiece and the tool come into contact with each other;
- and
- outputting information on the error, wherein
- in the moving, the tool is relatively moved in two translation directions to come into contact with the workpiece at the plurality of positions,
- in the acquiring the coordinate value, a plurality of coordinate values of the reference point when the workpiece and the tool come into contact with each other at the plurality of positions are acquired,
- in the deriving the error, a plurality of the errors at the plurality of contact positions are derived, and
- in the outputting, information on the errors in the two translation directions and information on the error in one rotation direction are output.
Dependencies are inferred from the claim text.