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Foundry Corporate News Topic Discharging, Decoring, Fettling, Finishing Topic Plant Technology, Equipment

New Rösler vibratory finishing system precisely and reliably treats the internal passages of work pieces


One of the most technically challenging aspects of mass finishing is the ability to effectively treat the internal passages of precision components.  This is especially true in industries which face very stringent requirements, industries such as; automotive, aerospace, tooling and medical.  It is essential for these manufacturers to achieve precise finishing results.  

Rösler has met this challenge head-on by offering a new, specialized line of rotary vibrators that do not have an inner dome, which allows for automatic, precise surface grinding, smoothing and high gloss polishing of such specialized components.

Fully automatic operation produces precise and consistent results
The new DL vibrators allow for fully automatic and reliable treatment of such inner contours, resulting in excellent finishing results.  This is achieved in either wet or dry operational mode.  Even with extremely delicate and complex contours the dimensional integrity of the work pieces is fully maintained.  Depending on the components, their original surface readings and the selected finishing process, Rz values of as low as 0.1 µm can be achieved.  

In this process, one or multiple work pieces are attached to specially designed fixtures. The complete unit with the attached work piece(s) is then firmly mounted into the DL vibratory finishing system. For certain applications the loading and unloading operation can take place with a pneumatic lifting device. This eliminates the need for entirely removing the media from the work bowl when unloading the fixture with mounted part(s).  

The vibratory energy is provided by two high-performance vibratory motors, placed on the outer wall of the work bowl, which is transferred to the work pieces that are mounted to the bottom of the work bowl. The intense vibration causes the processing media to flow through and around contours, internal passages or undercuts in the work pieces, without getting stuck. Compared to standard vibratory systems, this sophisticated machine design combined with powerful vibratory motors (3,000 RPM) produces a 30 percent increase in processing intensity. 

This results in comparably short cycle times. Adjustment of the imbalance weights and control of the motor speed, with frequency inverters, provides the ability to adapt the processing intensity to match the work pieces and the desired finishing task.

Equipment suitable for a multitude of finishing tasks
Rösler DL rotary vibrators are the perfect solution for finishing complex work pieces, such as; housings, pump or fan wheels, blisks, dies & molds, tools, automotive wheels and a variety of other work pieces.  Before delivering a final process solution, Rösler will process your parts in one of our global test labs, which allows us to deliver a tailor-made finishing solution, with the highest finishing quality, short cycle times and high cost efficiency.  Since we develop and produce all process consumables (media and compounds) in-house, they can be accurately matched to the respective customer application.   All DL vibratory finishing systems are equipped with an easy to use control panel, which includes process timers. For wet finishing operations, compound and water are fed into the machine with a precise dosing system.

As international market leader Rösler Oberflächentechnik GmbH offers total solutions in the field of mass finishing and shot blasting, painting & preservation systems and mass finishing consumables. In addition, Rösler offers a broad spectrum of surface finishing technologies (deburring, descaling, desanding, polishing, surface grinding,…) for work pieces made from metal and other materials. Headquartered in Germany with plants in Untermerzbach/Memmelsdorf and Bad Staffelstein/Hausen, the Rösler group also maintains sales and manufacturing branches in Great Britain, France, Italy, the Netherlands, Belgium, Austria, Serbia, Switzerland, Spain, Romania, Russia, Brazil, India, China and the United States. 

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