Precise in a single set-up
The JUCRANK takes care of all grinding operations on crankshafts in a single clamping set-up. Whether single-stroke ultra-small or multi-stroke large-scale crankshafts – rough and finish grinding of crankshafts in all series sizes and wide-ranging geometries is possible using differently dimensioned platforms.
Quality, cycle time, availability – the JUMAT external and internal cylindrical grinding machine leaves nothing to be desired.On ball screw nuts, the internal thread is pre-ground and finish-ground with a ceramic bonded mounted point in a clamping. Internal cylindrical grinding enables precise machining of the ball raceway.
Fast workpiece change times are achieved through the use of two workpiece spindles and non-productive times are reduced through cycle-time-neutral loading and unloading, including radial prealignment. Translated with DeepL
Unbeatable cycle time for complete worm shaft grinding process
The high-speed grinding machine JUMAT 2000 grinds single-start and multi-start worm shaft profiles from blank. The electroplated profile grinding, which is used for pre-grinding, enables a high cutting capacity and is ideal to process both soft and hard materials. During the subsequent finish-grinding with corundum, the gears are finalized. Thanks to the geometry calculation of the single-tooth grinding wheel, the grinding medium is perfectly designed for the thread profile of the workpiece.
If the worm shaft has specific surface requirements, a second grinding spindle with an additional polishing wheel is used. This three-stage process with an integrated deburring station facilitates the production of finished worm shafts in a single clamping process.
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