Manufacturing Technology Today

P. Jeevan Kumar ¹, B. R. Mohan Raj ¹, P. Babin ¹

Affiliations
1 Product Design and Engineering Department, Central Manufacturing Technology Institute, Bangalore, IN

Abstract

This paper discusses in brief about the effect of choice of gear ratios in planetary gearing in minimizing the uncovered or unswept area in the work envelope of agitators in a vertical change-can planetary mixer and the estimation of the unswept areas for various combination of gear pair ratios. It is also important to choose the number of teeth on sun and the planet gears such that the blade tip trace of the agitators will repeat its path only after as large number of revolutions as possible. Simulations are carried out to find out the optimum combinations of gear pair ratios resulting in minimum unswept region and attain better homogenization in tip trace in the shortest possible time.

Keywords

Vertical Planetary Mixers, Unswept Areas.

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P. Babin ¹, N. Nandiprasad ¹, Y. Balaramaiah ¹, T. Gurumurthy ¹, B. R. Mohanraj ¹

Affiliations
1 C M T I, Bangalore, IN

Abstract

Mixer is versatile equipment, finding application in diverse fields ranging from Household, Food, Pharmaceuticals, Chemical, Personal care industries, Construction, Rocket Propellant application and many others. To suit the requirement of individual applications, Mixers have been developed with different design philosophies-(a) horizontal and vertical versions with (b) single, dual, three and four blade configurations and (c) with and without planetary motion to the agitator system. Some mixers are of fixed bowl (Mix container) construction and some are rotating bowl type.... For Rocket propellant applications, considerations like stringent requirements of homogeneity and consistency of the product mix as well as the operational safety drive the choices in the Design Philosophy and various features. This paper attempts to focus on some of the salient features of the Solid propellant Mixers developed at CMTI.

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B. Ramakumar ¹, P. Babin ¹

Affiliations
1 Central Manufacturing Technology Institute, Tumkur Road, Bangalore, IN

Abstract

Electromagnetic forming is a process of metal forming using electromagnetic forces, generated by pulsed current passing through a magnetic coil. This article is collective information on this process which has lot of potential in the area of automobile, medical, aerospace, nuclear etc. yet to be fully exploited in the country.

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