“Digitalism” solves many problems with centerless cylindrical grinding

Tschudin “Digitalism” solves many problems with centerless cylindrical grinding

20.02.2018Editor: Peter Königsreuther

With the 400 CNC proline, Tschudin offers a centerless cylindrical grinding machine that allows not only an easy, fast and precise adjustment of the grinding settings. Hall 16 at booth F38.

Tschudin's departure from the usual teaching of mechanical engineering in cylindrical grinding was born the centerless 400 CNC proline cylindrical grinding machine. Almost completely, it is said, setup and grinding processes can be carried out digitally.
(Photo: Tschudin)

According to Tschudin , centreless cylindrical grinding is one of the most productive grinding methods. Until now, however, centreless cylindrical grinding has suffered certain disadvantages in setting up and retooling procedures: the time taken to set the workpiece support, for example, or the work required for height testing in order to have absolutely round workpieces at the end. This inventive Swiss team wanted to beat this problem once and for all, we are told. The result was the launch of the Tschudin 400 CNC proline. Contrary to every previous theory about building such installations, one feature is that the centres of the grinding disc and the workpiece lie in the same plane.

With the help of the patented fourth CNC axis, the control wheel is moved in Z. The workpiece support and the dressing tool of the control wheel are fixed at the height of the grinding disc, the firm says. The optimum raising of the workpiece is set using a single, decoupled, NC-controlled height-setting procedure for the control wheel.

Automatic compensation for “disc shrinking”

Simple and fast movement to a variety of positions is possible in order to achieve the best geometrical roundness in the workpiece, Tschudin explains. Disc profiles are dressed without shape errors or distortion. During production, the diameter of the grinding and control discs constantly become smaller, resulting in a change in the relative raising of the workpiece: this has a negative effect on the intended roundness of the workpiece. With the NC-controlled vertical control wheel axis, this problem is compensated for automatically, Tschudin informs us.

Likewise patented by Tschudin is the traversable workpiece support (W axis), opening up extended process possibilities so that even very complex profiles can be ground. Easy automation of this cylindrical grinding machine using robots is also said to be possible for outdoors. With a machine bed and spindle carrier made of natural granite and an optional spindle housing of Invar, thermal build-ups can also be managed optimally, we hear.

Tschudin at the Metav 2018: Hall 16, Booth F38

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