Technical Information Threading Partial Profile Tooth profile with universal profile shape 55° or 60° without cutting edges for the tooth tapers Re

Technical Information Threading Partial Profile Tooth profile with universal profile shape 55° or 60° without cutting edges for the tooth tapers. Reduced inventory. For various pitches in a limited range. Preferably one time production. Major/minor diameters must be accurately pre-turned. Full Profile Tooth profile with full profile shape including tooth height For bur-free, precise threads in the specified pitch. General application. Machining allowance for outside/core diameter around 0,1-0,15mm. Multi-Tooth Profile Multi-tooth full profile generally with 2-3 teeth Highly productive threading with fewer passes and longer tool life. Requires a rigid setup and long thread pass through. Minimum clearance width approximately 1.25 x E as per indexable insert dimensions table. Formulas Metric Formula Legend to find given formula m/min D (mm) m/min re x D x RPM RPM 1000 RPM D (mm) RPM RPM m/min x 1000 m/min D x re m/min metres per minute RPM revolutions per minute D part diameter re 3.1416 Maximum Cutting Speeds On older machines, cutting speed is often limited by the maximum travel speed mm/min of the tool allowed by the machine. Check your maximum speed with the following formulas Flank clearance Y arctan (sin (p/2) tan(a)) Y side (flank) clearance p included angle of thread form a radial inclination angle metric formula maximum cutting speed (m/min) part diameter (mm) x 3.14 x (1/pitch) x max mm/min 1000mm Thread Angle External Internal UN & ISO 60 5.3 8 BSW 55 4.8 7.3 TR 30 2.6 4 ACME 29 2.6 3.9 AMBUT 7 .6 .9 AMBUT 45 4 6