Общий каталог Yamawa 2022 - 2023 - страница 894

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JIS N-RSD

New Rolling Dies

Specification

Front face

Recommended Tapping Speeds depending on Materials

Low carbon steelsMedium carbon steelsStainless steelsBrass
3低炭素鋼63中炭素鋼6ステンレス鋼363黄銅6
(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 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.

●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

R2R5inspection of external threads
machined with rolling dies.
R1R4

0 -20 -40 -60 -80 -100 -120μm External thread surface finish

Basic pitch Dia. accuracy may differ slightly from inspection external thread JIS 1 specification depending on the type Inspection

External Thread Class of workpiece and processing

4h R5 conditions.

JIS 2 6g Related Products Please use the Die attachment RD-DA as the tooling

with the solid threading dies. ■DieattachmentRD-DA

●TheRD-DAcanbeadaptedeasilytoaCNCmachine withshanksofferedindieholderoutsidediameters ofφ10/φ16/φ20/φ25/φ38.