Carl E Nelson

US Patent:

45239738, Jun 18, 1985

Filed:

Oct 17, 1983

Appl. No.:

6/542790

Inventors:

Carl Nelson - Anaheim CA

Assignee:

Aerochem, Inc. - Orange CA

International Classification:

C23F 102
B44C 122
C03C 1500
C03C 2506

US Classification:

156626

Abstract:

A method and apparatus for chemically milling large sheet metal workpieces and the like to uniform wall thickness in which all wall thickness measurements and all cutting of the protective maskant which is applied to the surfaces of the workpiece is accomplished automatically and with extreme precision through the use of a computer directed robot.

US Patent:

46241698, Nov 25, 1986

Filed:

Apr 8, 1985

Appl. No.:

6/720989

Inventors:

Carl Nelson - Anaheim CA

Assignee:

Aerochem, Inc. - Orange CA

International Classification:

B26D 308

US Classification:

83881

Abstract:

A method and apparatus for use in chemical milling operations to automatically cut a maskant material, such as a thin film of plastic, which has been applied to the workpiece. The cutting device of the invention is designed for use with a computer controlled apparatus embodying a rectilinear robot adapted to move the cutting device in first, second and third directions relative to the workpiece. The pressural engagement between the cutting blade of the device and the workpiece is continuously sensed and controlled. Additionally, the angle between the cutting blade and the maskant is controllably varied as the cutting device is moved by the rectilinear robot.