Twin Tooth fil lam

Dènye devlopman nan teknoloji koupe Threaded se yon lam ki gen yon fòm espesyal jewometrik (de dan ak kontou diferan). Konbinezon sa a pèmèt kantite kou yo fòme yon fil konplè yo dwe redwi pa otan ke 40% konpare ak yon zouti sèl dan, pandan y ap ogmante lavi a zouti.

Malgre ke teknikman li se yon lam miltip dan, men gwo menen Tap TT (lam jimo dan) genyen batay la yon pwoblèm ki asosye ak yon zouti tradisyonèl milti-dan, se sa ki, yon Vibration ki te koze pa yon gwo fòs koupe. Konpare ak lam tradisyonèl la, kwen an koupe nan TT Blade gen yon longè meshing ki pi kout, ki diminye fòs la koupe ak diminye risk pou yo flutter. And because of the short spacing (t size) of the tooth shape to the edge of the TT blade, the thread can be machined closer to the step. 

Another advantage is that the TT blades are milled in standard 16 blanks, and other toothed blades require larger, higher-priced blanks. Kle a nan koupe efikasite nan lam TT se yon konsepsyon "dan brut/Fini fòm dan", nan ki dan brut yo evidamman pi kout pase fini. Therefore, the lead thread is much less depth than the second thread.

In any case, these teeth are in some way symmetrical to the contour of the machined tooth profile. Kontou premye dan pyès Cheijin montre yon kwen pi popilè pase dezyèm dan fil fini kontou a. The TT Blade completes two different cuts instead of completing two similar cuts at different depths. Each tooth is optimized for efficiency, and in fact each tooth cooperates with each other to produce a complete tooth shape as soon as possible. 

In addition, each tooth is removed almost identical to the material mentioned to maintain the force balance passed to the knife pad. Sa a pa vle di ke nouvo fòm nan kwen koupe osi lontan ke yon konjesyon serebral ka trete yon fil konplè, li sèlman koupe yon ti pati nan volim nan apeprè egal, lam la nan yon kou kèk ranpli manje a radial.