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Open AccessArticle

Planetary Mill with Friction Wheels Transmission Aided by an Additional Degree of Freedom

São Carlos School of Engineering, University of São Paulo—USP, Trabalhador São Carlense, 400, São Carlos 13566-590, SP, Brazil
Federal Institute of Education, Science and Technology of São Paulo—IFSP, Primeiro de Maio, 500, Itaquaquecetuba 08571-050, SP, Brazil
Author to whom correspondence should be addressed.
Machines 2019, 7(2), 33;
Received: 3 April 2019 / Revised: 16 May 2019 / Accepted: 17 May 2019 / Published: 21 May 2019
Processing in planetary ball mills is well suited to a large number of applications because they are easy to operate and versatile, grinding faster than other mills. Research related to planetary mills are mainly about the process evaluation, and there are few studies on the mechanical design of such equipment. This paper describes the decision process in the design of an innovative planetary mill in which design for manufacture and assembly (DFMA) principles were used to provide compact equipment made of simple and standardized parts. We developed a friction wheel mechanism with an additional degree of freedom that improves transmission and facilitates assembly, reducing the need for adjustment. It can be applied to different equipment that relies on planetary motion or rotating devices. A prototype was built, and its grinding performance surpasses that of other types of traditional mill. The mean particle size of alumina powder was reduced from 4.2 µm to 0.9 µm in 60 minutes. View Full-Text
Keywords: design; DFMA; friction wheels; planetary ball mill design; DFMA; friction wheels; planetary ball mill
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Camargo, I.L.; Erbereli, R.; Lovo, J.F.P.; Fortulan, C.A. Planetary Mill with Friction Wheels Transmission Aided by an Additional Degree of Freedom. Machines 2019, 7, 33.

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