Patent ID: 7139662
Filing Date: 2006-11-21
Classification: E02F

Abstract:
1. A system for determining the position of a working part of a tool on a machine comprising: a position-determining apparatus comprising: at least one position relationship device configured to determine a positional relationship of said working part of said tool relative to said designated place on said machine in a machine-based coordinate system; a calculating device resident on said machine configured to provide at least one of the position and the orientation and inclination of said working part of said tool in said fixed coordinate system based upon the position and orientation of said designated place on said machine in a fixed coordinate system and said positional relationship of said working part of said tool relative to said designated place on said machine in said machine-based coordinate system; and a geodesic instrument with a target-seeking function for measuring the position of at least one target placed on said machine, wherein said geodesic instrument is placed at a distance from said machine from which said at least one target is easily visible from said geodesic instrument.