Calibrating a multiple-axis machining center is one of those time-consuming but necessary tasks that parts makers have to accept. After paying for all of that machine precision, doing anything else wouldn’t make sense. Manufacturers are required to consider all error sources from the machines producing parts—angular errors as well as linear and straightness errors.
The task has gotten easier in past years, however, and has just gotten easier yet. Renishaw reports that its new XM-60 multiaxis calibrator is able to measure all six degrees of freedom from a single setup, in any orientation for linear axes. The company also says the calibration is simple to use and saves times compared to conventional laser measurement techniques.
The XM-60 measures six degrees of freedom with a compact launch unit that’s remote
from the laser unit, reducing heat effects at the point of measurement. Image courtesy of Renishaw
Designed for the machine tool market, the XM-60 calibrator provides a highly accurate laser system that incorporates novel technology with a patented optical roll-measurement and fiber-optic launch system. The compact launch unit is remote from the laser unit, reducing heat effects at the point of measurement. It can be mounted directly to the machine, on its side, upside down and even on its back, which is particularly beneficial for difficult-to-access areas of the machine. The calibrator also works with the company’s XC-80 environmental compensator to correct for environmental conditions.
Reducing measurement uncertainties is paramount for any user. The Renishaw XM-60 measures machine errors directly, reducing the inaccuracies that can result from the complex mathematics required for some alternative measurement techniques. Direct measurement makes comparison before and after machine adjustments a quick and simple task for users who have existing part programs for XL-80 measurement. The receiver is fully wireless and powered by rechargeable batteries, avoiding trailing cables during machine moves that could cause inaccuracies or break the laser beam during
measurement.
For more information about Renishaw Inc., Hoffman Estates, Ill., visit www.renishaw.com or call (847) 286-9953.
Related Glossary Terms
- calibration
calibration
Checking measuring instruments and devices against a master set to ensure that, over time, they have remained dimensionally stable and nominally accurate.
- degrees of freedom
degrees of freedom
Number of axes along which a robot, and thus the object it is holding, can be manipulated. Most robots are capable of maneuvering along the three basic Cartesian axes (X, Y, Z). More sophisticated models may move in six or more axes. See axis.
- machining center
machining center
CNC machine tool capable of drilling, reaming, tapping, milling and boring. Normally comes with an automatic toolchanger. See automatic toolchanger.
Author
Michael Anderson, former senior editor at Cutting Tool Engineering magazine, holds a master's degree in written communication from Eastern Michigan University. He has been professionally writing about manufacturing technology since 1998, including more than 10 years at the Society of Manufacturing Engineers.
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