Positional reference system for ultraprecision machining

Patent · Fri Sep 12 00:00:00 EDT 1980

OSTI ID:5955988

Arnold, J B; Burleson, R R; Pardue, R M

A stable positional reference system for use in improving the cutting tool-to-part contour position in numerical controlled-multiaxis metal turning machines is provided. The reference system employs a plurality of interferometers referenced to orthogonally disposed metering bars which are substantially isolated from machine strain induced position errors for monitoring the part and tool positions relative to the metering bars. A microprocessor-based control system is employed in conjunction with the plurality of positions interferometers and part contour description data input to calculate error components for each axis of movement and output them to corresponding axis driven with appropriate scaling and error compensation. Real-time position control, operating in combination with the reference system, makes possible the positioning of the cutting points of a tool along a part locus with a substantially greater degree of accuracy than has been attained previously in the art by referencing and then monitoring only the tool motion relative to a reference position located on the machine base.

• DOE Contract Number: W-7405-ENG-26
• Assignee: TIC; EDB-82-003774
• OSTI ID: 5955988
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
COMPUTERIZED CONTROL SYSTEMS
DESIGN
OPERATION
CUTTING TOOLS
POSITIONING
AUTOMATION
INTERFEROMETERS
LASERS
MACHINING
MICROPROCESSORS
COMPUTERS
CONTROL SYSTEMS
ELECTRONIC CIRCUITS
MEASURING INSTRUMENTS
MICROELECTRONIC CIRCUITS
TOOLS
420200* - Engineering- Facilities
Equipment
& Techniques