Product category:
Metals heat treatment, mechanical stress relieving
News Release from: Rosler Oberflaechentechnik | Subject: Automated shot peening system
Edited by the Manufacturingtalk Editorial
Team on 02 November 2006
Automated shot peening a disk spring
every 10s
A continuous-flow system is shot peening automotive disk springs in a cycle time of 10s/spring and the system is working in two shifts, producing 1.5 million disk springs/year.
ZF Sachs, one of the world's leading manufacturers of drive and chassis components is involved in a joint venture with a Chinese supplier, and needed a partner in shot blast technology They brought their requirements to Rosler Oberflachentechnik and Rosler engineers developed a continuous-flow system to shot peen disk springs
This article was originally published on Manufacturingtalk on 7 Oct 2005 at 8.00am (UK)
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In Shanghai, performance specifications were used to select the RBD 600-2 continuous-flow system to peen disk springs.
According to the Almen measuring method, deflection values between 0.1 and 0.25mm (equivalent to a shot blast intensity of 4 to 10 A) as well as a 98% degree of overlap, were to be achieved by the system.
Further reading
Shot blaster processes transmission housings
A highly efficient shot blasting system for deburring and surface finishing the casings and internal surfaces of transmission housings has a cycle time of 26s/component.
Shot blasting suits heavy and delicate work
Tumble belt batch system, targeted for foundries and forge shops, and a compact drag finishing system, designed for special vibratory finishing were shown at EMO.
The pre-defined dimensions for the disk springs in this application range from 110mm (4in) to 300mm (13in) in diameter.
Another objective for the system was that it be fully automated.
In order to meet these specifications, a system concept incorporating two parts conveyors (each with a working width of 300mm (13in)) was developed, where one of the conveyors transports the disk springs continuously underneath four blast wheels.
These are arranged at an angle facing towards one another to achieve an even shot blast result.
After the springs have been shot blasted on one side, they are conveyed to a turning station, where they are automatically rotated by 180 deg and conveyed back to the blast wheels by the conveyor running parallel in the opposite direction.
In order to achieve optimum contact on parts of different dimensions and geometries, as well as to prevent the parts from being blown out of shape, it was necessary to equip the conveyors with different component guide rails.
In addition, two component recognition systems ensure the pass-through process runs smoothly.
The required cycle time of 10s/spring was realized easily and consistently with this system.
The system is operated in two shifts, resulting in an output of 1.5 million disk springs annually.
As an all-round supplier, Rosler is an international market leader in the production of surface finishing, shot blasting machines, painting systems and preservation lines as well as process technology for the rational surface finishing (deburring, descaling, sand removal, polishing, grinding, etc) of metals and other components.
Besides the German plants in Untermerzbach and Bad Staffelstein, the Rosler Group has branches in Great Britain, France, Italy, The Netherlands, Belgium, Austria, Switzerland, Spain, China, Brazil, South Africa and USA.
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