The new WM 250 – 8000 whirling machine from Burgsmüller GmbH gives users substantially enhanced precision during hard whirling of ballscrew spindles over the entire machining length with a maximum ±7µm pitch diameter tolerance. A third prism-jaw self-centring steady rest with user-selectable position fixes and centers the free end of the bar stock, while the spindle axis is kept free so that the bars can be pushed through it.

The 90° chip conveyor removes the chips from the spindle axis and additionally facilitates through-loading of material in order to whirl spindles of any length using the repositioning process. Integrated measuring systems monitor the fitting in the already whirled thread during repositioning. In addition, the whirling attachments can be equipped with a controlled A-axis (inclination adjustment), so that the angle of inclination of the whirling attachment follows the changing pitch angle during the machining process.

"For companies specializing in metal cutting technology, the key to enhanced competitiveness is increasing their processing flexibility. This is achieved above all by cost-effective and premium-quality whirling machines designed for a wide range of products such as spindles, nuts, pump rotors or screws and screw elements as well as crank and cam shafts," says Jens Biel, CEO at Burgsmüller.