Product Details Supplier Info More products

Carl Slingsby, managing director of Rollertech, recently approached Mike Diskin of Halifax Numerical Controls (HNC) to convert a lathe into a grinding machine.

Slingsby, whose company services the rubber roll industry, had just returned from Germany visiting one of his major customers.

They had expressed a need for a roll grinder for smaller volume batches and couldn’t justify spending a large sum of money on a production machine.

As the German customer needed to produce cambered rolls, a PLC and DRO would be integrated into the machine electrics, thus controlling the axes.

The PLC was programmed to produce cambers and tapers, along with concave and convex shapes.

This becomes feasible by diverting the feedback from the linear scale to the PLC.

Featuring a 350mm diameter x 63mm wide carbide wheel, HNCs design of the grinding unit was ‘passed off’ and a prototype produced.

An extensive test programme followed without any modifications necessary and was fitted to the machine.

In tandem an Omron PLC unit was sourced, programmed and integrated with the DRO system/machine electrics.

Other than developing a low-cost grinding solution, the Germany-based customer’s only other remit was to grind rolls up to 3000mm in length x 380mm diameter and retain the lathe’s original front mounted toolpost for metal cutting operations.

The dimensions were well within the scope of the grinding head, which is capable of grinding rolls up to 1000mm diameter with no constraints on length, and as it’s fitted to the rear slide it doesn’t interfere with the forward mounted toolpost.

After witnessing the acceptance tests at HNC’s Halifax facility, the customer took delivery, quickly utilising it to capacity and is now in the process of ordering a second.

Halifax Numerical Controls

View full profile