Electric heating – Metal heating – By arc
Patent
1994-10-18
1996-11-26
Walberg, Teresa J.
Electric heating
Metal heating
By arc
21912167, 21912176, 21912184, B23B 2608
Patent
active
055782299
ABSTRACT:
A method and laser cutting system for cutting a secondary piece from a board is disclosed. A board is provided having a generally planar first and second surfaces separated by a predetermined distance or thickness and having a central plane located midway between the first and second surfaces. First and second lenses are arranged relative to the board with the focal point of the respective first and second lenses disposed intermediate the first and second surfaces of the board. Laser beams from a pair of lasers are propagated through the respective lenses with each laser beam converging at the focal point of its respective lens and cutting the workpiece from its respective surface toward the other surface. Ideally, the focused beams diverge sufficiently along the cutting path such that each laser beam reduces in intensity sufficiently so as not to cause harm to the opposing laser delivering systems or support structure.
REFERENCES:
patent: 3610871 (1971-10-01), Lumley
patent: 3679863 (1972-07-01), Houldcroft et al.
patent: 4469931 (1984-09-01), Macken
patent: 4491463 (1985-01-01), Weinstein et al.
patent: 4625093 (1986-11-01), Chryssolouris
patent: 4642439 (1987-02-01), Miller et al.
patent: 4689467 (1987-08-01), Inoue
patent: 4751365 (1988-06-01), La Rocca et al.
patent: 4761535 (1988-08-01), Lawson
patent: 4943700 (1990-07-01), Hughes et al.
patent: 5108669 (1992-04-01), Dijk et al.
patent: 5367929 (1994-11-01), Burch et al.
patent: 5521352 (1996-05-01), Lawson
Advanced Technology Applications to Eastern Hardwood Utilization--Excerpt: Advanced Wood Processing, Progress Report #5, 1992, Dept. of Forestry Michigan State University, East Lansing, Michigan.
Advanced Technology Applications to Eastern Hardwood Utilization--Excerpted from: Progress Report #6, 1993, Dept. of Forestry, Michigan State University, East Lansing, Michigan.
"Laser Cut Furniture Parts", Henry A. Huber, Woodworking & Furniture Digest Nov., 1980, pp. 30-31.
Brochure from FDM (Furniture Design & Manufacturing) "Laser Machining of Wood at Michigan State University", Jul., 1992.
"A Machine Vision System to Examine Hardwood Lumber", Richard W. Conners, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, Advanced Wood Processing, pp. 51-52.
"Development of a Prototype System to Demonstrate the ALPS Concept: A Modified Vision System Approach", Powsiri Klinkhachorn, West Virginia University, Morgantown, WV Advanced Wood Processing, pp. 49-50.
"Analysis of Combustion Gases Associated With Laser Cutting of Wood", Kali Mukherjee, et al, Michigan State University, East Lansing, MI Advanced Wood Processing, pp. 37-38.
"Yield Comparisons of Conventional and Laser CNC Cutting of Hardwood Dimension Parts from Rough Lumber", Huber, et al, Advanced Wood Processing 1993 Annual Report, pp. 31-60.
"Factors Influencing Laser Cutting of Wood", Barnekov, et al Forest Products Journal vol. 36, No. 1, pp. 55-58, Jan., 1986.
"Gluebond Strength of Laser Cut Wood", McMillin and Huber, Forest Products Journal, vol. 35, No. 1, pp. 23-25, Jan., 1985.
"Economics of Cutting Hardwood Dimension Parts with an Automated System", Huber, et al Forest Products Journal, vol. 39, No. 5, pp. 46-50, May, 1989.
"Economics of Cutting Wood Parts with a Laser Under Optical Image Analyzer Control", Forest Products Journal, vol. 32, No. 3, pp. 16-21, Mar., 1992.
"Prototyping an Automated Lumber Processing System", Klinkhachorn, et al, Forest Products Journal, vol. 43, No. 2, pp. 11-18, Feb., 1993.
"A Comparative Economic Analysis of Automated and Conventional Hardwood Lumber Processing Systems", Manetsch and Huber, Forest Products Journal, vol. 43, No. 1, pp. 35-40, Jan., 1993.
"Overview of Progress and Development of the ALPS", Huber, 2nd International Conference on Automated Lumber Processing.
"Enhancement of the Computer Lumber Grading Program to Support Polygonal Defects", Forest Products Journal, vol. 42, No. 10, pp. 41-46, Oct., 1992.
"An Economic and System Analysis of the Automated Hardwood Lumber Processing System (ALPS)", Manetsch and Huber, Forest Products Journal, vol. 42, No. 3, pp. 51-56 Mar., 1992.
"Industry Standards for Recognition of Marginal Wood Defects", Huber, et al, Forest Products Journal, vol. 40, No. 3, pp. 30-34, Mar., 1990.
"Safety Costs in Hardwood Dimension and Furniture Part Processing From Rough Lumber", Huber and Mukherjee, Advanced Wood Processing, pp. 27-29.
"Yield Comparisons of Conventional and Laser CNC Cutting of Hardwood Dimension Parts from Rough Lumber", Huber and Klinkachorn, Advanced Wood Processing, pp. 30-32.
"Economic Analysis of ALPS, etc." Huber and Manetsch, Advanced Wood Processing, pp. 25-26.
"A Comparison of Two Roughmill Cutting Models", Ruddell, et al, Forest Products Journal, vol. 40, No. 5, pp. 27-29, May, 1990.
"ALPS: Yield Optimization Cutting Program", Klinkhachorn, et al Forest Products Journal, vol. 39, No. 3, pp. 53-56, Mar., 1989.
"Acoustic Emission as a Control Parameter in Red Oak Drying-Final Report", Zalph, et al, Advanced Wood Processing, pp. 59-63.
"Design of a Materials Handling System for the Advanced Lumber Processing System" Weidhaas, et al, Advanced Lumber Processing, pp. 53-54.
"Optimizing Glue-Line Strength of Laser-Cut Hardwoods", Rabiej and Behm, Advanced Lumber Processing, pp. 54-56.
"Laser Power and Feed Speed in Cutting Wood", Mukerjee and Khan, Advanced Wood Processing, pp. 33-36.
"A Study of the Mechanism of Laser Cutting of Wood", Li and Mazumder, Advanced Wood Processing, pp. 39-48.
"Optimizing Glue-Line Strength of Laser-Cut Hardwoods: Phase II", Rabiej and Behm, Advanced Lumber Processing, pp. 57-58.
Barnekov Vladmir
Huber Henry A.
Mukherjee Kalinath
Michigan State University
Mills Gregory L.
Walberg Teresa J.
LandOfFree
Method and apparatus for cutting boards using opposing convergen does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for cutting boards using opposing convergen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for cutting boards using opposing convergen will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1970613