ROUND TOOLS 34 / NORTON WINTER PRECISION TECHNOLOGY TOOL GRINDING INNOVATIVE CLEARANCE ANGLE GRINDING WITH V-PRIME AND V-PRO Norton Winter V-PRIME is the new and improved version of V-PRO wheels for round tool grinding, delivering the ultimate edge stability. V-PRIME has been designed to provide excellent edge stability in clearance angle grinding. In today’s challenging economic environment, it is more important than ever to maintain constant wheel geometry for as long as possible, without the need for correction, as this enables increased output and improved quality. The new V-PRIME can be easily implemented without any machine or process adjustments, offering manufacturers immediate improvements. The well-known and approved Norton Winter V-Pro will be kept for applications where a hard-brittle hybrid bond is preferred. With V-PRIME and V-Pro, Norton WINTER now offers the perfect solution for every application problem to design an optimum process with the shortest cycle times and longest life times. Apart from 11V9 grinding wheels, V-PRIME and V-Pro are available in other geometries for clearance angle grinding of round tools. GRINDING TOOL D64 V-PRIME5406 GRINDING MACHINE ANCA MX7 Linear COOLANT Oil WORK PIECE Tungsten carbide end mill, Ø 12 mm GRINDING PARAMETERS FEED RATE vf = 250 mm/min INFEED ae = ≈0.3 mm CUTTING SPEED 1. vc = 22 m/s 2. vc = 18 m/s APPLICATION EXAMPLE - CLEARANCE GRINDING OF Ø 12 mm TUNGSTEN CARBIDE END MILL BENEFITS • ≈ 15 % reduction of grinding time • Significant cost savings • Faster machine set-up with easier wheel preparation GRINDING TOOL D64 V-Pro4073 C125 A GRINDING MACHINE SAACKE COOLANT Oil WORK PIECE Tungsten carbide drills; Ø 11 mm GRINDING PARAMETERS FEED RATE vf = 120 mm/min INFEED ae = 1.2 mm CUTTING SPEED vc = 17 m/s APPLICATION EXAMPLE - CLEARANCE ANGLE (CIRCUMFERENCE) BENEFITS • 2 times longer dressing interval • Huge time savings • Significant increase in productivity ROUND TOOLS GASHING
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