Общий каталог Yamawa 2022 - 2023 - страница 894

⑩ Dies Outside diameter D Thickness T JIS N-RSD Spiral Fluted Taps (for blind hole) ① JIS New Rolling Dies Spiral Fluted Taps (for through hole) ② Specification Front face Spiral Pointed Taps (for through hole) 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 36 〜 36 〜 36 〜 36 〜 Hand Taps ( m / min ) ( m / min ) ( m / min ) ( m / min ) ④ 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 Cemented Carbide Taps 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. Roll Taps ●YAMAWA recommends using automatic machines, lathes and machining centers wtih the N-RSD thread rolling dies. ⑥ 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 Die Class Special Thread Taps Simple Inspection Tools R2 R5 inspection of external threads ⑦ machined with rolling dies. R1 R4 0 -20 -40 -60 -80 -100 -120μm ●External thread surface finish Basic pitch Dia. accuracy may differ slightly from inspection external thread External Thread Class Pipe Taps ⑧ JIS 1 Inspection specification depending on the type External Thread Class of workpiece and processing 4h R5 conditions. JIS 2 Thread Mills Premium Thread Mills ⑨ 6g Related Products Dies Please use the Die attachment RD-DA as the tooling ⑩ with the solid threading dies. ■Die attachment RD-DA Center Drills Centering Tools 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