The capability of a machine tool to cope with rapidly changing operating conditions is a decisive factor for its accuracy. A transition from roughing to finishing completely changes the mechanical and thermal load on the machine, which can cause considerable changes in accuracy. Similar load changes occur during machining of smaller production runs. Permanent changes between setup processes and order-specific machining cause varying heat inputs with the corresponding effects on accuracy.
Semi-Closed LoopThermal drift of feed axes
Closed LoopNo thermal drift of feed axes
Sustained Accuracy in Small and Medium Batch Production
Accuracy of Feed Axes
Direct position measurement with linear encoders (YouTube)
Closed loop position measurement provides high accuracy in any situation with small series (Klartext 62)