Energy beam position verification
First Claim
1. A non-transitory computer program product comprising at least one non-transitory computer-readable storage medium having computer-readable program code portions embodied therein, the computer-readable program code portions comprising:
- at least one executable portion configured for;
providing said energy beam having a first focus in at least two positions on said work table,detecting said at least two positions of said energy beam spot on said work table created with said energy beam having said first focus,providing said energy beam having a second focus in said at least two positions on said work table, anddetecting said at least two positions of said energy beam spot on said work table created with said energy beam having said second focus, andat least one executable portion configured for comparing said at least two positions created with said first and second focuses, wherein said position of the energy beam is verified if said at least two positions created with said first focus are deviating less than a predetermined distance from said at least two positions created with said second focus.
3 Assignments
0 Petitions
Accused Products
Abstract
A method for verifying a position of an energy beam spot, said method comprising the steps of: providing a calibrated energy beam having a first focus in a at least two positions at a work table, detecting said at least two positions of said energy beam spot on said work table created with said energy beam having said first focus, providing said calibrated energy beam having a second focus in said at least two positions at a work table, detecting said at least two positions of said energy beam spot on said work table created with said energy beam having said second focus, comparing said at least two positions created with said first and second focus, wherein said position of the energy beam is verified if said positions created with said first focus are deviating less than a predetermined distance from said positions created with said second focus.
84 Citations
12 Claims
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1. A non-transitory computer program product comprising at least one non-transitory computer-readable storage medium having computer-readable program code portions embodied therein, the computer-readable program code portions comprising:
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at least one executable portion configured for; providing said energy beam having a first focus in at least two positions on said work table, detecting said at least two positions of said energy beam spot on said work table created with said energy beam having said first focus, providing said energy beam having a second focus in said at least two positions on said work table, and detecting said at least two positions of said energy beam spot on said work table created with said energy beam having said second focus, and at least one executable portion configured for comparing said at least two positions created with said first and second focuses, wherein said position of the energy beam is verified if said at least two positions created with said first focus are deviating less than a predetermined distance from said at least two positions created with said second focus. - View Dependent Claims (2, 3, 4)
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5. An apparatus for verifying a position of an energy beam spot, said apparatus comprising:
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at least one energy beam source configured to generate at least one energy beam; and a control unit configured to; provide said at least one energy beam having a first focus in at least two positions on a work table, detect said at least two positions of said energy beam spot on said work table created with said at least one energy beam having said first focus, provide said at least one energy beam having a second focus in said at least two positions on a work table, detect said at least two positions of said energy beam spot on said work table created with said at least one energy beam having said second focus, and compare said at least two positions created with said first and second focuses, wherein said position of the energy beam is verified if said at least two positions created with said first focus are deviating less than a predetermined distance from said at least two positions created with said second focus. - View Dependent Claims (6, 7, 8)
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9. A method for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together with at least one energy beam so as to form the article, said method comprising the steps of:
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generating a model of said three dimensional article, applying a first powder layer on a work table, directing said energy beam from at least one energy beam source over said work table, causing said first powder layer to fuse in selected locations according to said model to form a first cross section of said three dimensional article, said method further comprising a verification method for verifying a position of said energy beam used for fusing said powder material, said verification method comprising the steps of; providing said energy beam having a first focus in at least two positions on said work table, detecting said at least two positions of said energy beam spot on said work table created with said energy beam having said first focus, providing said energy beam having a second focus in said at least two positions on said work table, detecting said at least two positions of said energy beam spot on said work table created with said energy beam having said second focus, and comparing said at least two positions created with said first and second focuses, wherein said position of the energy beam is verified if said at least two positions created with said first focus are deviating less than a predetermined distance from said at least two positions created with said second focus. - View Dependent Claims (10, 11, 12)
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Specification