Metal tubes: deformation, end-machining and rolling in a single system

E-FORM is a powerful and versatile end-forming system for metal tube ends able to carry out many integrated machining operations such as end-machining, forming and rolling. The possibility to program over 9 passes, that can be 7 push passes and 2 revolving passes or 6 push passes and 3 revolving passes, ensures many configuration solutions and high versatility of the system. Programming is extremely simplified thanks to the implementation of VGP2D.

This system is part of the All-Electric series from BLM GROUP. All handling axes are electrically driven and NC controlled, therefore they ensure very high positioning accuracy and set-up times reduced to a  minimum. This system is characterised by various aspects starting from space on machine top that enables forming of complex parts therefore widening machine field of application.

The new vice clamping system with a force of 25 t, and a greater clamping strength, combined with the choice of single punch feed with a thrust force up to 10 t for a better quality of end-forming. The process is also more reliable and effective for machining thicker materials and stainless steel. Cycle time optimization, also in case of single punch feed, is provided by handling the punches with a differentiated stroke for which two controlled axes are used. It is also possible to have punches with different lengths without any interference with the vice.

Tool stroke increase widens the machining possibilities on E-FORM making it possible to carry out forming at a greater distance from tube end. Finally, the new all-electric differential rolling system with three controlled axes, can work on copper, aluminium and stainless steel tubes up to 30 mm long. Adjustment and handling of rollers is carried out by two electrical axes whereas another axis controls the contrast mandrel axial to the tube.