ontrols developer Fanuc FA America (Hoffman Estates, IL) announced that Fanuc FA and Jerry Scherer, an engineer with Fanuc, recently were awarded a patent, US 8,135,491 B2, for the development of the company’s CNC Adaptive Control System for on-demand integrated adaptive control of machining operations. This adaptive control system was developed to increase machine tool productivity with Fanuc FA America’s iAdaptS adaptive control solution. Fanuc’s CNC Adaptive Control System measures the pres- ent value of the spindle load and then compares this value to a present value of a target spindle load. The adaptive control- ler is configured to control the feed rate of the machine tool relative to the workpiece to maintain the present value of the
spindle load approximately equal to the present value of the target spindle load using one or more calculations of the first feed rate value, the first feed rate dither adjustment value and the second feed rate dither adjustment value. This adaptive control system is the base technology in
Fanuc FA America’s iAdaptS solution that improves material removal and minimizes cycle time by automatically optimiz- ing the cutting feed rate based on the actual spindle load. Additionally, integration of the iAdaptS software solution within the CNC now eliminates the need for mounting hardware, simplifying installation while improving the capabilities of the original iAdapt product. The company’s original iAdapt product introduced the concept of roughing cycle productivity to CNC customers. The “On Demand” control feature simplified the use of the adap- tive control by making it easy to set up and operate; iAdaptS extends tool life by keeping roughing tools fully loaded, putting the heat into the chips rather than the part. As a result, there
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