Steinmeyer offers a wide range of production processes which satisfy all demands including the established processes for thread production, such as grinding, whirling and rolling. Heat treatment is supplemented by NADCAP- or process audit certified suppliers for special processes.
Steinmeyer provides all thread production processes:
- Grinding on over 30 thread grinding machines from 400 mm to 6000 mm length between centers.
- Whirling - hard and soft, also possible for high tensile stainless steel like Cronidur® DIN 1.4108 (AMS5898)
CNC- turning and milling machines are available with turning length 4000 mm and open bore to 128 mm. Complete machining by 8-axis dual spindle machines is possible as well as 5-side milling of complex workpieces.
Internal thread finishing is done by either grinding or hard turning.
Internal thread finishing
The finishing of the heat-treated nut is normally done by grinding. In this process there are some restrictions on the maximum length of the nut based on its lead angle and diameter. However, Steinmeyer has the possibility to produce such extra complex nuts by hard turning on optimized machines - with final tolerances equal to that achieved in grinding, or even better.
The profile measurements assure in all cases that the finished internal threads comply in every respect with the specifications - an important element for the documentation of the process chain.