With numerous new technical features, the LSM 400 has been developed to set new standards in diamond tool production and increase the added value for users in the construction industry.

New standards in productivity, process and cost efficiency

The laser welded saw blade has been indispensable in the construction industry for more than three decades. The laser welding machine LSM 400 received its global launch at Dr. Fritsch’s bauma stand (Hall A1, Stand 432). It replaces the previous LSM 300 generation and is said to set new standards in terms of increased productivity as well as process and cost efficiency. “The LSM 400 is designed for operation with fibre lasers. The combination with a line scanner ensures penetration depths of up to 6mm (with 3kW fibre lasers), a significantly better connection between segment and blade as well as a visually more attractive welding seam. In addition to the increase in productivity, above all, the operating costs are reduced, e. g. through reduced power consumption and eliminated laser maintenance costs,” explains Volker Wörn, sales manager, Dr. Fritsch Sondermaschinen GmbH.

Inside the machine, up to four cameras ensure precise monitoring of the machine interior. Two of them are used to check the welding seam on the screen. In addition, set up times are significantly reduced when changing over to other segment shapes. Accessibility of the machine is optimal in all areas, especially for segment feeding and blade loading at the front. Finally, the LSM 400, which was developed in close cooperation with the company Diamond Tools Austria, has a modern design.

New benchmark

“An important further development of the LSM 400 compared to the previous machine generations is the maximum blade diameter of the blade of up to 2,000 mm. This feature was regularly requested by our customers and previously considered as not feasible,” adds Volker Wörn. “Along with the increased diameter the possible segment heights and thicknesses were also expanded. This in turn requires a powerful laser source that makes it possible to weld even thick segments from one side.” For example, cutters for laying fibre optical cables can easily be welded with the LSM 400. Furthermore, it is possible to select a specific side clearance for each individual segment. “By adapting the helical axis, we can weld all common helical segment shapes, even for large diameters,” states Volker Wörn.

Advantages for customers

Thanks to the new and intelligent programming, the operator saves valuable time during set up. With additional (optional) motorised setting aids, infeed belts are controlled fully automatically, which saves time and prevents operator mistakes. “The new programming of the LSM 400, which also performs an automatic calculation of the helical welding path, suggests pre-set parameters, depending on tool dimensions or assists with the parameter set creation. This sets new standards,” says Volker Wörn. The graphic panel ensures maximum clarity of operation. During development, Dr. Fritsch placed special emphasis on the protection of sensitive machine components. Optimally placed protection and suction systems have reduced process related dirt and fumes to a minimum. “In addition, we are preparing a laser power measurement, a segment strength test unit and a marking station. These will be available as options,” concludes VolkerWörn.