OF CNC CONTROLS
COMPTON, CA— SD 500 software for automatic volumetric compensation of CNC controls with the MCV 500 Laser Calibration System has been introduced by Optodyne, Inc. of Compton, California. Volumetric compensation of CNC machines provides a check of the machine tools accuracy and, by compensating for errors, enables tighter tolerances to be achieved. The SD 500 software runs from most notebook or desktop PCs with Windows operating system and does not require add-on cards.
The SD
500 software performs automated rapid and efficient measurement of a CNC
machine tool’s volumetric accuracy.
Volumetric accuracy requires measurement of 3-linear errors,
6-straightness errors, and 3-squareness errors. The SD 500 software
utilizes the Vector method (patent pending), developed by Optodyne, to measure all three displacement errors, three
vertical straightness errors, three horizontal straightness errors and three
squareness errors with just four setups.
By measuring volumetric errors, the machine
tool’s whole volume can be compensated, which improves the overall accuracy of
the machine tool, not just linear displacement. For example, most machine tool
calibration checks for displacement error, linear error parallel to the axis of
movement. This ignores the vertical
straightness error, which is perpendicular to the axis of movement, as well as
the horizontal straightness error, which is perpendicular to the axis of
movement and the vertical straightness direction. A vector error results, which consists
of displacement error, vertical straightness error and horizontal straightness
error.
By making 4-body
diagonal displacement measurements, volumetric accuracy
can be determined, as recommended by the B5.54 standard (ASME). Body diagonal displacement errors are
sensitive to all the volumetric error components and therefore make an efficient
test of volumetric accuracy.
The SD-500 Vector measurement system, also known
as the sequential step diagonal system can be used to calibrate CNC machine
tools, CMMs and other precision measuring machines and stages. The SD 500 allows
the operator to perform volumetric calibration tests for true volumetric
compensation. The Vector measurement system provides a rapid and efficient way
of measuring a machine's volumetric accuracy along a diagonal path through the
work envelope of the machine. The software is easy to use and runs on
Windows compatible PCs with an RS-232 interface. The software enables the operator to
collect and analyze data, generating information on linear errors, straightness
errors, both vertical and horizontal, and squareness errors. Data can be displayed on the screen of
the computer or printed in tabular and graphic format. The software also
generates axis specific files that can be used to generate volumetric
compensation tables.
Optodyne, a California corporation, develops, manufactures and markets laser-based precision measurement equipment for machine tool calibration, metrology, OEM, and other industrial applications that require precision measurement. The company's products are based on the patented Laser Doppler Displacement Meter (LDDM) technology developed by Dr. Charles Wang, Optodyne's president.
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- This page and all contents,
Copyright 1997-2006 Optodyne, Inc. -
This Newsletter was released on April 24,
2006.
