Since the beginning of this year, Richter Maschinenfabrik AG has been machining beds for the "Jumbo" of the machine series, for one of the most noteworthy milling machine manufacturers in Germany. The 40,500 kg bed, made of cast EN-GJS-600-7, with dimensions of 6,960 x 4,050 x 1648 mm, places the highest demands with regard to precision, where straightness and flatness are concerned.

The maximum deviations permitted are in the order of a magnitude of 0.01 mm. For the guide rail bearing surfaces, a concave curve with a depth of 1/100 is to be milled over a 5.4 m long section - this is without doubt the greatest challenge!

Machine beds in pre-machining	Machine bed in finish-machining	Machine bed during super-fine machining
Measurement of the guideways	Autocollimator measuring device in use

Although precision is, of course, a prerequisite, reliable and clear documentation is also a fundamental criterion of the supplied quality! The autocollimator used to measure the straightness of the X and Y profiles in the my range is directly connected to a PC with measurement and evaluation software. This allows us to produce top quality documentation with measuring records and diagrams for each inspected workpiece, ensuring that all preset tolerances can be observed.