444 Каталог TUNGALOY 2007 Режущий инструмент Точение Фрезерование Сверление Стр.438

Каталог TUNGALOY 2007 Режущий инструмент Стр. 438 0444 ENG Lab2u

PCD and PCBN Tools Grinding of T-DIA Tools 1. Comparison of grindability DX120 DX140 DX160 DX180 Grinding machine Diamond tool grinder Grinding wheel Vitrified bond Cup-type diamond wheel 800 1000 0150 Workpiece Material Four grades of T-DIA Ground surface area 64 mm2 No. of revolutions 1600 rpm Grinding time 6 min 2. Comparison of obtainable edge sharpness for fine and coarse grained grades (Magnification 600x) DX120 DX140 t ye As the grain size is finer the grindability and ground-edge sharpness are improved and burr-free and better surface is attainable. Standard regrinding method T-DIA grades DX160 DX140 DX120 Grinding machine Highly rigid universal tool grinder Grinding wheel Type Bond Grain size Concentration Diamond wheel Vitrified bond Rough grinding 400 600 Finish grinding Finer than 1000 100 125 Grinding conditions Grinding speed Oscillation cycle 900 1200 m/min 30 60 cycle min Notes Generally prehoning is not necessary. Cautious points Use constant flood coolant. A loaded or glazed wheel must not be used. Always dress the wheel and keep fresh edges.