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In this system the Y1 and Y2 axes operate as independent double acting
hydraulic system. both axes share the same oil supply but the flow to the valves
as well as true position(s) of the ram entirely and separately controlled by
computer command. The CNC reads the ram position from independent linear
encoders while monitoring and adjustable the proportional valves, producing a
double-closed lop system. By using this principle as well as the integration of
the latest technologies, we have succeeded in developing a user-friendly,
service-friendly, fast and accurate system. Accurate is further ensured by
mounting the linear encoders on a C-frame connected to the bed, rather than
directly on the side frames, so that deflection of the side frame and loads do
not affect positionning. Accuracy is guaranteed up to 0.01 mm.
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