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High-Accuracy and High-Precision Machining with FANUC CNCs

With integrated high-speed CNC and drive system hardware and with servo and spindle motors that feature ultra-smooth rotation, accurate current detection and 32,000,000 count per rev feedback devices, FANUC CNC ensure the highest accuracy and maximum dynamic performance that the machine structure can support. FANUC control systems feature a suite of advanced path and acceleration optimization and machine error compensation functions to enhance part accuracy while extending machine life and reducing cycle times.

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Features and Benefits of High Accuracy Machining with FANUC CNCs

AI Contour Control

AI Contour Control looks ahead in the part program to eliminate the acc/dec and servo delays that limit feedrates when cutting short line segments or contours, and effectively eliminates machining trajectory error in corners and small radii.

Nano Smoothing

Nano Smoothing converts CAM-generated line segments into NURBS curves that more accurately matches the original CAD part profile and provides faster execution and a superior surface finish - without the need for drastic modifications to the CAM system or existing part programs.

Quality Level Selection

Intuitive, graphical adjustment of the balance between precision, smoothness and processing speed.

Jerk control

In part program sections in which acceleration changes significantly, such as where the cutting path changes from a straight line to curve, machine vibration or shock may occur. Speed control and a change of acceleration suppress vibration and machine shock and their associated machining errors.

High Response Vector Drives

High Response Vector (HRV) is an advanced form of field oriented control that uses high-speed DSPs and nano-interpolation to improve surface finish, cycle times and accuracy. State-of-the-art processors, high-resolution 32,000,000 count encoders, resonance filters and DSP technology drive servo technology to the next level. Auto-following filters dynamically suppresses mechanical resonance even when the frequency changes. HRV4 closes the current loop in 31.25 µs, the velocity loop at 62.5 µs and the position loop at 250 µs. Spindle HRV4’s dedicated spindle processor to achieve a 12khz PWM frequency. For the 0i-F, HRV3 closes the current loop in 62.5 µs, the velocity loop at 125 µs and the position loop at 500 µs.

Servo and machine optimization

FANUC integrates powerful automatic tuning and visualization tools into each CNC control to ensure stable and productive performance for general machining. Advanced 3D servo and machine optimization tools provide visualization and tuning of the tool path vector allowing expert services to fine tune machine performance for a specific part or part family, even for the most complex 5-axis applications.

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