950 Каталог KYOCERA 2016 Инструмент режущий станочный Пластины Резцы Фрезы Сверла Стр.R30

Каталог KYOCERA 2016 Режущий инструмент для станков Стр. R30 0950 Lab2u

Technical Information Terms and Angles of Toolholder Turning Terms and Angles of Turning Toolholder Function of Tool Angle Tool Angle Name Function Effect Rake Angle Side Rake Angle Affects cutting force, cutting heat, chip evacuation and tool life. If it is positive (+) angle, sharper cutting performance is obtained. (less cutting force, less edge strength) Positive (+) angle is recommended for easy to machine workpieces or thin workpieces. Smaller rake angle or negative (-) angle is recommended when a stronger edge is required like scale machining or interrupted machining. Inclination Angle Relief Angle Front Relief Angle Side Relief Angle Prevents the tool's contact to the workpiece surface, except the cutting edge. When it is small, the cutting edge becomes strong, but the wear at relief faces may shorten the tool life. Cutting Edge Angle Cutting Edge Angle Affects chip control and the direction of cutting force. When it is large, chip thickness becomes thick and chip control improves. Approach Angle Affects chip control and the direction of cutting force. When it is large, chip thickness becomes thin and chip control worsens, but cutting force is dispersed and edge strength improves. When it is small, chip control ability improves. Minor Cutting Edge Angle Prevents friction between cutting edge and workpiece surface. When it is large, edge strength deteriorates. Toolholder Rigidity 1. Flexure of Toolholder 4xkxapxfxL Ex bxh3 Symbol Name Unit tf(Delta) Deflection mm b Shank Width mm Shank Height mm E Young ratio N/mm2 ap Depth of Cut mm f Feed Rate mm/rev Specific Cutting Force N/mm2 L Overhang mm F Cutting force N (F=kxapxf) The flexural strength of toolholder will decrease by increasing of shank height by third root and will decrease of reducing overhang by third root. Minimizing toolholder shank overhang as much as possible is important as well as shank's sectional square measure. 2. Flexure of Boring Bar 64xFxL3 64xkxapxfxL3) 3xExnxD4 3xExnxD4 Symbol Name Unit tf(Delta) Deflection mm D Shank Dia. mm E Young ratio N/mm2 ap Depth of Cut mm Feed Rate mm/rev Specific Cutting Force N/mm2 Overhang mm F Cutting force N (F=kxapxf) Clamp Screw Cutting force F Amount of displacement R30