A new gantry-type, five-axis CNC machine for laser texturing the 3D freeform surfaces of moulds and tools weighing up to 20 tonnes – and with maximum dimensions of 3350 x 1350 x 1000 mm – has been introduced by DMG Mori.

The Lasertec 400 Shape is the largest model in a range of four laser ablation machines, the others being designated 45, 75 and 125. A further machine version is planned with a 2000 mm X axis, the Lasertec 200 Shape.
It is becoming increasingly important in many industries, especially the automotive and aerospace sectors, to impart geometrically defined surface structures to plastic injection moulds and press tools to improve the aesthetics and functional properties (such as scratch resistance and water repellence) of components.
The machining of textures is more environmentally-friendly than conventional etching and offers considerable freedom of design, while at the same time ensuring a high level of repeatability. This process is also capable of creating filigree cavities without the need to manufacture electrodes.
DMG Mori’s Lasertec 400 Shape is equipped with a newly developed additive manufacturing laser head that is both narrow and compact. Excellent accessibility is available to a component, even if it has deep and slender features, eliminating the need for long focal lengths that would slow the ablation process.
Central to machine operation are a 100 W fibre laser with switchable pulse length and frequency up to 1 kHz, and 3D processing optics with F-Theta scanning lens. The two degrees of movement of the head are ±200° of rotation and a swivel range of -100° to +135°, enabling undercuts to be processed.
For further information www.dmgmori.com