Общий каталог Yamawa 2022 - 2023 - страница 894

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Spiral Fluted Taps (for blind hole)Spiral Fluted Taps(for through hole)Spiral Pointed Taps(for through hole)Hand TapsCementedCarbide TapsRoll TapsSpecial Thread TapsSimple Inspection ToolsPipe TapsThread MillsPremium Thread MillsDiesCenter DrillsCentering Tools JIS Die ClassExternal Thread Class ⑩ Dies OutsidediameterThicknessDT JIS ① N-RSD New Rolling Dies ② Specification Front face ③ Recommended Tapping Speeds depending on Materials Low carbon steels Medium carbon steels Stainless steels Brass 低炭素鋼 中炭素鋼 ステンレス鋼 黄銅 3〜6 3〜6 3〜6 3〜6 ④ (m/min) (m/min) (m/min) (m/min) Product Features ●The new N-RSD rolling dies are capable of producing high precision screw threads through material deformation while producing an excellent surface finish without creating chips. ●The N-RSD has made major improvements in thread rolling efficiency starting with sizes P=0.5 and offers a dramatic ⑤ improvement in tool life that could not be resolved with conventional rolling dies. ●The lower forming load on the dies chamfer at the starting point is greatly reduced compared to conventional products, achieving longer tool life. ●Ideal for small quantity thread rolling on various kinds of screw threads. Ideal for small diameter and long threads that are difficult to handle with thread rollers. ⑥ ●YAMAWA recommends using automatic machines, lathes and machining centers wtih the N-RSD thread rolling dies. Pitch diameter tolerance class comparison chart of die class (R class) and an external thread class. Comparative example with M6×1 ●Die class: Class R is the pitch R3 R6 diameter tolerance zone for ⑦ R2 R5R1R4 inspection of external threadsmachined with rolling dies. 0 -20 -40 -60 -80 -100 -120μm ●External thread surface finish Basic pitch Dia. accuracy may differ slightly from inspection external thread ⑧ JIS 1 Inspection specification depending on the type External Thread Class of workpiece and processing 4h R5 conditions. JIS 2 ⑨ 6g Related Products ⑩ Please use the Die attachment RD-DA as the toolingwith the solid threading dies. ■Die attachment RD-DA ⑪ ●The RD-DA can be adapted easily to a CNC machine with shanks offered in die holder outside diameters of φ10/φ16/φ20/φ25/φ38. JIS ⑩-51