Laser projection system using variable part alignment
First Claim
1. A method of projecting a template on a workpiece;
- comprising the steps of;
providing a measurement device for determining a location of a workpiece in a three dimensional coordinate system and a laser projector for projecting a laser beam for generating a laser template on the workpiece;
identifying a feature on the workpiece having geometric significance for accurate manufacturing of the workpiece;
using said measurement device for determining a physical location of the feature in a three dimensional coordinate system and measuring an offset between the physical location of the feature in the three dimensional coordinate system from a theoretical location of the feature of a computer model of the workpiece;
using a computer for aligning the physical location of the feature as identified by said measurement device with the theoretical location of the feature from the computer model and determining an optimized location for projection of the laser template onto the workpiece by said laser projector by tracing the path of the laser beam through pattern coordinates transformed by the measured offset; and
projecting the template onto the workpiece based upon the optimized location for directing work to be performed on the workpiece.
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Accused Products
Abstract
A method of projecting a template on a workpiece provides a measurement system for determining a location of a workpiece and a laser projector for projecting a laser template. A feature on the workpiece having geometric significance is identified. A physical location of the feature in a three dimensional coordinate system is determined and compared to a theoretical location of the feature on computer model of the workpiece. A template correlated to the feature is selected. The projection of the template onto the workpiece relative to the feature is optimized by correlating alignment of the physical location of the feature with the computer model of the feature. The template is projected onto the workpiece based upon the optimized projection for directing work to be performed on the workpiece.
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Citations
22 Claims
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1. A method of projecting a template on a workpiece;
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comprising the steps of; providing a measurement device for determining a location of a workpiece in a three dimensional coordinate system and a laser projector for projecting a laser beam for generating a laser template on the workpiece; identifying a feature on the workpiece having geometric significance for accurate manufacturing of the workpiece; using said measurement device for determining a physical location of the feature in a three dimensional coordinate system and measuring an offset between the physical location of the feature in the three dimensional coordinate system from a theoretical location of the feature of a computer model of the workpiece; using a computer for aligning the physical location of the feature as identified by said measurement device with the theoretical location of the feature from the computer model and determining an optimized location for projection of the laser template onto the workpiece by said laser projector by tracing the path of the laser beam through pattern coordinates transformed by the measured offset; and projecting the template onto the workpiece based upon the optimized location for directing work to be performed on the workpiece. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification