Steven Michael Case

US Patent:

7706595, Apr 27, 2010

Filed:

Nov 1, 2004

Appl. No.:

10/978687

Inventors:

Thomas W. Bushman - Marblehead MA, US
David D. Madsen - Lakeland MN, US
Paul R. Haugen - Bloomington MN, US
Steven K. Case - Minnetonka MN, US
John D. Gaida - Victoria MN, US
M. Hope Madsen - Lakeland MN, US

Assignee:

CyberOptics Corporation - Golden Valley MN

International Classification:

G06K 9/00

US Classification:

382141

Abstract:

Embodiments include measuring motion characteristics of the workpiece through the placement process. Since the component is placed on the workpiece with some force to ensure proper adhesion to the workpiece, some deflection of the workpiece is expected during the placement cycle. The placement force is adjusted to ensure that the component is safely placed into the solder paste or adhesive. Placement force is adjusted through a number of characteristics including: choice of spring tension in the nozzle; the length of the nozzle and the amount of over-travel into the board; the rigidity of the board and design; and the placement of the board support mechanisms. With proper adjustment of these characteristics and parameters, high quality placements onto the workpiece can be ensured.

US Patent:

20070091323, Apr 26, 2007

Filed:

Sep 14, 2006

Appl. No.:

11/521066

Inventors:

Swaminathan Manickam - Bellingham MA, US
John Konicek - Minneapolis MN, US
David Duquette - Minneapolis MN, US
Steven Case - St. Louis Park MN, US

International Classification:

G01B 11/14

US Classification:

356621000

Abstract:

A pick and place machine includes a sensor disposed to acquire an image of a nozzle before a pick operation, and one or more images after the pick operation. Image analytics based upon these images reveal important characteristics that can be used to classify the pick operation. In some embodiments, a plurality of after-pick images are acquired at different poses (angular orientations).