Общий каталог Yamawa 2021 - страница 637

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3. Flutes Intro Major functions of flutes are SP 1) Chips’ pocket, 2) lubricant supply route, 3) rake angle formation, 4) to determine cutting amount in relation to the number of chamfer threads. All are very important. Taps’ flutes are classified into following groups by tapping methods, fluting method, tapping direction, and hand of screw thread. SL Straight Straight fluted tap for blind and through hole PO Spiral Cutting type ST Left Hand Spiral Spiral point Spiral pointed tap Flutes of tapROLL for through hole CARBIDE with oil groove Roll tap for blindand through hole Forming type without oil groove Roll tap for blind LONG and through hole HAND Type of Flute TAPS Type of tap Type of tap Cutting type Forming type Flute Flute EG (STI) Straight Flute With oil groove SPECIAL THREADS, GAUGES Spiral Flute THREAD MILLS Spiral Point Without Flute oil groove DIES CENTER In general, the number of flutes for cutting taps usually increases as the diameter becomes larger. However, it is also influenced by tap’s DRILLS strength and rigidity, the accomodation of chip, the amount of cutting, and lubricant supply system. Technical info 638