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 FRACTURE CUTTING SPEED TOO HIGH DECREASE CUTTING SPEED DEPTH OF CUT LARGE INCREASE THE NUMBER OF PASSES AND CHIPPING POOR CHIP CONTROL CHANGE TO FLANK FEED WRONG CARBIDE GRADE CHANGE GRADE INCORRECT CENTER HIGH CHECK CENTER HIGH WRONG ANVIL CHECK HELIX ANGLE INCORRECT CUTTING SPEED INCREASE CUTTING SPEED BUILT UP WRONG CARBIDE GRADE CHANGE GRADE EDGE INSUFFICIENT COOLANT INCREASE COOLANT FLOW CUTTING SPEED TOO HIGH CHANGE CUTTING SPEED INCORRECT TOOL AND CHECK CENTER HIGH AND VIBRATIONS WORKPIECE INSTALLATION CLAMPING LARGE DEPTH OF CUT INCREASE NUMBER OF PASSES ASYMMETRIC WEAR OF CALCULATE HELIX ANGLE AND INCORRECT ANVIL THREAD SELECT AN APPROPRIATE ANVIL FLANKS 60