SF 3/105 stream finishing machine for series production

OTEC has developed the new SF 3/105 immersion finishing unit with pulse drive system specially to enable the system to be fully integrated into production lines for large-scale production runs. This unit type enables complex turned parts such as worm drives, cog wheels and camshafts to be deburred, rounded, burnished or polished in a matter of seconds. It is a very easy matter to adjust the unit to the production cycle time, which is often only a few seconds.

The workpieces are clamped by means of a mandrel or similar device. Loading can be carried out manually, by the use of a handling system or by a robot (especially for series production). Processing is carried out by immersing the workpiece in a flowing stream of grinding or polishing medium. The media stream is generated by means of a rotating drum with a diameter of up to 1.05 m. The laminar flow velocity of up to 15 m/s ensures very short processing times.

The pulse drive system developed by OTEC delivers perfect results by constantly alternating the direction of rotation. During this process, the clamped workpiece is immersed in a media stream of grinding or polishing medium where it is alternately processed in each direction of rotation in a stream of grinding or polishing media. Decelerating and accelerating again to 2,000 rpm takes only half a second. This creates relative velocities of up to 30m/s and accelerations of up to 40 g. The main advantage of this is extremely short finishing times.

OTEC is a medium-sized manufacturer of drag finishing, disc finishing and stream finishing machines. Founded by Helmut Gegenheimer in 1996, the company has steadily established itself on the market by developing innovative new machine concepts and numerous patented processes.

Initially this was in the jewellery industry, then increasingly in the tool making, pharmaceutical and automobile industries as well as in the area of medical devices and CNC machining. The key to success has always been the development of new, better solutions which have proven to be superior to previous surface finishing processes. Today, OTEC is the techno-logical leader in many markets and maintains a network of branches worldwide.