Общий каталог Yamawa 2021 - страница 547

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Special Threads, Gauges SIT Intro Inspection Tools SP Simple Thread Inspection Tools FEATURES SL HSS HSS material increases considerably the gauge life. PO ST ROLL YMW-SIT Product Features CARBIDE - SIT can minimize the inspection process time and improve the inspection efficiency by adopting step screw thread. - Premium HSS material extends the tool life dramatically. - Tool for through hole or blind hole is available individually. - Color case and color mark on the tool simplify tool storage control. LONG Inclination -What is the step screw thread? gauge thread profile -YAMAWA new thread gauge (for through hole) features a step screw thread on its end first thread profile Pitch diameter of Pitch diameter of allowing the gauge to enter easily the internal screw and work efficiently particularly when checking fine pitches screw threads. HAND Details of step TAPS Note : Step screw thread is not applied to the gauge for blind hole (NP gauge) screw thread EG (STI) Accuracy of SIT Simple pitch diameter tolerance, pitch tolerance and thread half angle tolerance, are 3 important factors on measuring internal screw threads. For SIT and thread plug gauge these values are the same. SPECIAL Comparison between GB-6H/and GP-6H/thread plug gauge Comparison between NB-6H/and NP-6H/thread plug gauge THREADS, GAUGES OD PD Pitch Tolerance Pitch Tolerance tolerance for thread OD PD tolerance for thread YMW half angle half angle Size Size Basic Max Min Tol. Basic Max Min Tol. Basic Max Min Tol. Basic Max Min Tol. THREAD size size (±) (±minute) size size (±) (±minute) MILLS GB-6H NB-6H 5.7055 5.7165 5.6945 0.022 5.500 5.511 5.500 0.011 6.000 6.023 6.001 0.022 5.350 5.3675 5.3565 0.011 0.005 15 0.005 16 M6×1 M6×1 GP-6H 6.000 6.023 6.001 0.022 5.350 5.3675 5.3565 0.011 0.005 15 NP-6H 5.7055 5.7165 5.6945 0.022 5.500 5.511 5.500 0.011 0.005 16 M6×1 M6×1 DIES The pitch diameter is simple pitch diameter. Pitch tolerance includes error of thread lead. Main specification of SIT is same with that of thread gauge. But SIT has partly Yamawa's own design in the length of thread and bottom part relief. Due to these features, Yamawa has adopted the name "Simple Inspection Tool or SIT" instead of using the name "thread gauge". CENTER DRILLS Technical info 548