The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 2011
Filed:
Apr. 09, 2009
Nozomu Tanioka, Azumino, JP;
Nozomu Tanioka, Azumino, JP;
Harmonic Drive Systems, Inc., Tokyo, JP;
Abstract
In a galvano scanner system (), a light position detection unit () is mounted so as to match the scanning center of the workpiece surface (), the light position detection unit being provided with a two-dimensional light position sensor () disposed in the center and four one-dimensional light position sensors (()) to (()) concyclically disposed at equal angles about the center of the two-dimensional light position sensor. An origin position command is given to galvano scanners (), laser light is irradiated at low output, and the offset adjustment value is calculated based on the detection output of the two-dimensional light position sensor (). Next, the galvano scanners () are pivoted left, right, up, and down; the perpendicularity in relation to the workpiece surface () is determined and the distance from the workpiece surface () is calculated based on the detection output of each one-dimensional light position sensor (); and the scale adjustment value is calculated on the basis thereof. Adjustment can be carried out with good accuracy in a simple manner in comparison with the case in which such an adjustment is made in alignment with a scale on a workpiece surface while visually observing visible laser light.