Каталог Erojet резьбонарезные пластины и державки - страница 62

Technical Section FLANK CLEARANCE ANGLE-γ γ =tg -1 [tgα x tg δ] α =10 º for external α =15 º for internal TROUBLESHOOTING PROBLEM CAUSE SOLUTION WRONG CARBIDE GRADE CHANGE GRADE PLASTIC INSUFFICIENT COOLANT CHECK COOLANT FLOW DEFORMATION CUTTING SPEED TOO HIGH DECREASE CUTTING SPEED CUTTING RESISTANCE HIGH INCREASE THE NUMBER OF PASSES UNSTABLE CONDITIONS CHECK TOOL AND WORKPIECE CLAMPING AND STABILITY FRACTUREAND CHIPPING CUTTING SPEED TOO HIGHDEPTH OF CUT LARGEPOOR CHIP CONTROLDECREASE CUTTING SPEEDINCREASE THE NUMBER OF PASSESCHANGE TO FLANK FEED WRONG CARBIDE GRADE CHANGE GRADE INCORRECT CENTER HIGH CHECK CENTER HIGH WRONG ANVIL CHECK HELIX ANGLE BUILT UPEDGE INCORRECT CUTTING SPEED INCREASE CUTTING SPEEDWRONG CARBIDE GRADECHANGE GRADEINSUFFICIENT COOLANTINCREASE COOLANT FLOW CUTTING SPEED TOO HIGH CHANGE CUTTING SPEED VIBRATIONS INCORRECT TOOL ANDWORKPIECE INSTALLATION CHECK CENTER HIGH ANDCLAMPING LARGE DEPTH OF CUT INCREASE NUMBER OF PASSES ASYMMETRIC WEAR OFTHREAD INCORRECT ANVIL CALCULATE HELIX ANGLE ANDSELECT AN APPROPRIATE ANVIL FLANKS 60