The frictional heat created within moving ball screws affects their positioning accuracy, particularly when only motor feedback is used for motion control. Positioning tests in accordance with ISO 230-3 enable thermal-behavior analysis through repeated positioning to two points within the measuring range.
Axis positioning accuracy
The positioning accuracy and repeatability of a machine tool's linear axes can be determined by moving them to specified positions while measuring them with the KGM 200 encoders. In the process, you can also measure the guideway accuracy perpendicular to the direction of the machine slides.
The data measured during circular interpolation testing allows you to identify the causes of innacuracy. Circular interpolation tests with large radii deliver machine geometry data. While tests with small radii provide data about motion-control accuracy under high axis acceleration (radii: from 0.1 mm to 115 mm).
In free-form testing, the CNC control traverses a programmed free-form contour within a single plane. The KGM 200 encoders measure the actual contour traversed. The amount of detected error can be visaulized with the ACCOM software, allowing you to analyze the dynamic behavior of your machine.