Cutting tool sharpening machine NC 18

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The NC18 is an ultra-compact, 5-axis automated grinding solution designed for the serial production or resharpening of drills and cylindrical tools (carbide and HSS). Developed in France by Avyac Machines, it combines ultra-short stroke kinematics with complete automation to maximize productivity per unit of floor space.

Technical Specifications & Machining Capacities

To meet the demands of bar turning and precision machining workshops, the NC18 boasts rigorous specifications:

• Clamping capacity: From Ø1 to 8 mm in the standard configuration (W12 collets), extendable up to 14.5 mm as an option (W20 collets or 6-jaw chuck).
• Maximum tool length: Up to 320 mm (or 350 mm depending on the configuration).
• Drive & Grinding Wheels: A 2.2 kW pressurized and sealed electro-spindle (6000 rpm to 9000 rpm) directly drives Ø100 mm diamond or CBN grinding wheels without any intermediate parts to guarantee absolute concentricity.
• Small Footprint: A compact size of 1400 x 1200 x 1500 mm and a weight of 1000 kg facilitates integration into any production line.

Automation, Precision, and Premium Components

The reliability of the NC18 is based on the use of proven technologies from global industry leaders:
• CNC Controls: Available as standard with an intuitive B&R interface (Power Panel PPC2100) or as a high-performance option with the SIEMENS SINUMERIK ONE / 840D SL control on a touchscreen.
• Micrometric probing and indexing: Integration of a MARPOSS precision probe (5-micron accuracy) with a dual stylus for automatic detection of drill length, flute, and flute lip position.
• Production autonomy: Automatic gravity-fed rotary loader with a capacity of up to 300 tools, combined with an integrated 80-liter coolant reservoir (60 L/min flow rate) and an integrated fire extinguishing system, essential for autonomous operation with neat oil.

Geometric Versatility & Profitability
Avyac's embedded software allows operators, after very short training (Plug & Play concept), to program a vast array of profiles with a single standard grinding wheel:

• Compatible tools: Twist drills (conical or faceted relief grinding), 3-flute drills, step drills, flat drills, taps, deep bore drills (Gundrills), 1- to 4-flute end mills, center punches, punches, tungsten electrodes, and engraving tools.
• Operating cost savings: Drastically reduced setup times, optimized 5-axis kinematics for short cycle times, and gentle pneumatic tool ejection in oil to preserve cutting edge geometry.