22 March, 2015
Innovative Usage of Vibratory Bowl Feeders – Auto feeding of Ceramic Rings for Centreless Grinding
Elscint recently manufactured a supplied an auto feeding system for feeding of ceramic rings to a centerless grinding machine. The requirement was to feed 15 types of ceramic rings of various dimensions, right from diameter 20 mm to diameter 42 mm and thickness varying from 4 mm to 10 mm. The internal diameter too varied for the various rings, but mostly being 8 to 12 mm less that the outer diameter. For feeding to the customer’s centerless grinding machine, the rings were required to be fed axially. Due to the huge variety, to make the changeover between the rings easy, Elscint manufactured a special cylindrical design bowl made in stainless steel with separate changeover tooling for each of the rings. As the rings were having less thickness, there was a tendency of their toppling over. However, the tooling developed by Elscint ensured that this did not happen and the rings were fed in a stack to the grinding machine. Additionally, a linear vibrator with tubes was provided to accommodate different sizes of components for further feeding to the centreless grinding machine. This provided a constant pressure and push to the parts when they entered the grinding machine. The bowl was coated with Elscinthane PU coating, ensuring that the noise level was less by eliminating the contact between the bowl surface and the components. The complete system was mounted on a stand with an height adjustment of (+/-) 100 mm to ensure that the outlet tube can be aligned to the machine work-rest, whenever the ring size changes.