Page 36 - ITA_Journal_3-2019

Member News
Reika GmbH & Co KG
Reika delivers to the manufacturer of the World´s lightest tipping cylinders based in the UK
Cylinder Blanks
The UK based market leader in the eld of vehicle-mounted hydrau- lic systems, including front-end, underbody and ejector cylinders, has ordered another Reika cutting line after twenty years of contin- uous production on the rst line. The reliability and performance of the rst line was the driving argu- ment for the new capital invest- ment after such a long time. Every hydraulic cylinder housing is pro- duced from a tubular blank, which has to be cut from a long preci- sion steel tube according to the required length. As the English manufacturer is mainly producing telescopic cylinder units for truck and mining vehicles, the exible variety of length is the challenge. As the ingoing drawn-over-man- drel tubes in the diameter range between 63 – 250 mm are quite expensive and the numbers per batch are not such high, the target was to minimize the scrap/ rest end volume. The individual project engineering with tube optimization software and various loading and discharging positions was developed together with the customer´s team. Each ingoing tube is length measured before the cutting pattern is determined. The Siemens control includes a data table for the different production lengths and numbers. The weekly program can be downloaded and will be processed with minimum scrap. Anyhow, short rest ends, which cannot be avoided, will be either automatically transported
back again to the bundle loader or will be separately discharged on a special “short length”-table. These lengths can be processed in a new production batch and will not be scrapped. The line is equipped with quick set-up fea- tures, the length adjustment in the following stations, such as boring and cleaning after the parting operation, are adjusted fully automatically. The clamping tools are reduced to a minimum, therefore the set-up time is reduced to 10 minutes for the complete manufacturing cell. The tube transport is executed by gripper systems and gantry design through the complete line. The boring system machines the cut tubes on both sides in a facing, chamfering and boring operation. The concentric clamping devices on each spindle side are working without tool change. The boring heads are also covering the com- plete production range without any tool change. The facer heads are automatically radially adjusted by a draw bar and servomotor. The concentricity of the internal bore totheouterdiameterforthe nal laser welding of the end caps was challenging because of the tight tolerances. But the customer was quite impressed by the stability and accuracy of the production cell.
Endworking with Boring
Reika GmbH & Co KG
Tiegelstrasse 3 58093 Hagen Germany
Tel: +492331969 00x30 Fax: +492331969 096
info@reika.de www.reika.de
ITAtube Journal No3/October 2019
36