The R&D engineers at Guhring have optimised the groove, the polygon shape and the surface preparation of its threading series and the result is the new Pionex tapping line.
An innovative geometric change in the tunnels of the thread former optimises the contact between the tool and component surface and drastically reduces the cutting forces with a smooth cutting action.
This enhanced design reduces the cutting temperature as well as the torque and the axial forces by up to 30%. The result for the end user is a welcome improvement in tool life, improved reliability and consistency as well as improved thread quality and precision.
Pionex taps are manufactured from a powder metallurgical steel compound that has a high wear resistance whilst a special TiCN surface treatment provides durability. This combination is complemented by a new Guhring polishing technique that makes the surface of the thread formers smoother and more polished than ever before. The result of these enhancements further prolongs tool life and enhances surface quality.
The new developments with the Pionex geometry are noted in the groove depth and width that are both increased to transport more lubrication to the focal area of the thread former. Another key feature of the new range is the innovative shape of the polygon. By re-aligning the geometry of the decisive operating radius that is the focal contact point between the tool and the workpiece, the torque requirement and stress on the tool is significantly reduced.
The new Pionex series is available in all major thread types and this includes metric, metric fine, UNC, UNF and pipe thread. In addition, the series covers diameter tolerances of 6HX 6GX, form C and form E. To match the extensive diameters and thread forms available, Guhring has also made the Pionex thread formers available with through coolant, with the option of axial and radial coolant channels.