Modern Machine Shop
Heidenhain’s LC 200 linear scale is designed for linear measurement on machine tool axes ranging to 28 m (almost 92 ft.), and it can be used with linear motors. A Metallur steel scale tape is the measuring standard. The position value is formed from two graduation tracks. The absolute track features a serial-code structure and provides values over its entire length, and the additional incremental track is interpolated for the position value. The information from the two tracks is processed to attain a high-resolution, absolute position value. The scale offers high output-signal quality scanning due to its integrated opto-ASIC, which increases the tolerance to contamination, the company says. System accuracy is ±5 µm with the current EnDat interface.
The linear scale is assembled on the machine from individual components. According to the company, the housing sections feature improved mounting and sealing technology. An integrated seal on the face and a tongue and groove system make it possible to lightly slide the housing sections together. Large mounting tolerances facilitate assembly of the entire system.