TPT January 2014

Technology News

A laser processing head with rotating optics

LLDROP has been optimised for the laser platforms SLS and FLS (solid- state laser), as well as the fibre laser platform LFS. The solid-state lasers offer output values of up to 800W and a maximum pulse energy of up to 200J. The fibre laser offers output values of up to 150W and maximum pulse energy of up to 15J with maximum efficiency and no need for maintenance. LLDROP will be presented at several forthcoming trade fairs. Rofin-Lasag offers high quality, reliable products and is a market specialist for aviation and space travel, automotives, electronics, medical technology, tooling, industrial and watch industries.

The components are fixed, for example on the tray of a transfer line, and guided to the processing station, where they are welded with a freely programmable rotation speed. Because the installation of a rotating axis in the CNC machine or automation plant can be omitted, production is made more efficient. Further possibilities of transporting the components are indexing tables or a monorail and tablet. Besides the advantage of efficiency with respect to the component transport, LLDROP also covers different application areas due to its modular structure. It offers the possibility to weld different diameters under various angles; currently 45°, 30° and 15° as well as the diameter ranges 0-27mm, 25-47mm and 45-67mm are available. In order to achieve an excellent welding result, the inert gas nozzle is entrained.

IN order to be able to weld cylindrical and other rotation-symmetric parts without complex and inefficient multi- axis systems, a laser processing head with rotating optics is almost indispensable, according to Rofin- Lasag AG, Switzerland. With this rotating head, processing is carried out quickly and efficiently directly on the tray of the transfer line or of the rotary indexing table. An example of the challenges faced is the fusing of two concentrically arranged components, and to realise this, if possible, within the scope of mass production. With the rotating optics LLDROP, Rofin-Lasag designed a beam control system that is custom-made for this type of application. The rotating processing head is suitable for spot, seam and segment welding of circular weld seams.

Rofin-Lasag AG – Switzerland Fax: +41 33 227 45 73 Website: www.lasag.com

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J anuary 2014