Каталог Carmex общий 2021 - страница 102

30mm ® Thread Turning Technical Section Thread Turning - Step by Step Step 1 : Choose Thread Turning Method from page A04-5 Step 2 : Choose Insert Step 3 : Choose Toolholder Step 4 : Choose Insert Grade Step 5 : Choose Thread Turning Speed Step 6 : Choose Number of Threading Passes In most cases the above mentioned 6 steps would be the steps needed to ensure a good thread. When cutting more complicated threads such as TRAPEZ, ACME, BUTTRESS or SAGE,  it is advisable to check the effect of the thread “HELIX ANGLE” on the “RESULTANT FLANK CLEARANCE” . If is smaller than 2°, an anvil change is required. Step 7 : Find Thread Helix Angle Step 8 : Choose Correct Anvil EXAMPLES: Example No. 1: Step 1: Choose Thread Turning Method  from page A04-5, we chose EX - RH Insert & Toolholder ISO 1.5 mm Step 2: Choose Insert from page A01-7: 16 ER 1.5 ISO Step 3: Choose Toolholder from page A02-3: SER 2020 K16 Step 4: Choose Insert Grade from selection on page A04-2 Our choice for Alloy Steel is Grade P25C Step 5: Choose Thread Turning Speed  from chart on page A04-3, we chose 100 m/min Rotational Speed calculation: 100 1000 106530 Step 6: Choose Number of Threading passes  from table on page A04-5, we chose 8 passes Example No. 2: Step 1: Choose Thread Turning Method from page A04-5  Usually, an IN-RH Toolholder and Insert will be chosen, however, in this particular case we prefer to pull the metal  chips while thread turning outward, thus we chose to work with IN-LH Insert & Toolholder Step 2: Choose Insert from page A01-11: 16 IL 12 UN Step 3: Choose Toolholder from page A02-8: SIL 0025 R16 Note: since we thread cut IN-RH thread outward with an IN-LH tool, do not forget to replace the standard anvil (supplied with the holder) with a negative anvil AE16-1.5 Step 4: Choose Insert Grade from selection on page A04-2 Our choice for Brass is Grade K20 Step 5: Choose Thread Turning Speed from chart on page A04-3, we chose 150 m/min Rotational Speed calculation: 150 1000 125438.1 Step 6: Choose Number of Threading passes from table on page A04-5, we chose 9 passes A04-8