1031 Каталог KYOCERA 2017 Инструмент сборный и монолитный для станков Стр.R26

Каталог KYOCERA 2017 Инструмент режущий Стр. R26 1031 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 4xFxL3 4xkxapx fxL Exbxh3 Exbxh3 Incorrect ooo Overha ng L Symbol Name Unit fi(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) 2. Flexure of Boring Bar 6= 64xFxL3 64xkxapxfxL3) 3xExnxD4 3xExnxD4 Clamp Screw Symbol Name Unit (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) Cutting force F 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. Amount of displacement R26