International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 11 | Nov 2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 101 Modelling and Development of Chaff cutter machine Prof. J.G. Shinde 1 , Prof. S.V. Pandit 2 , Prof. R.B. Lokapure 3 , Prof. S.J. Kadam 3 12,3 Assistant Professor, Dept. of Mechanical Engineering, Bharati Vidyapeeth’s College of Engg., India 4 Associate Professor, Dept. of Mechanical Engineering, Bharati Vidyapeeth’s College of Engg., India ------------------------------------------------------------------------***------------------------------------------------------------------------- Abstract - A chaff cutter is a mechanical device for cutting straw or hay into small pieces before being mixed together with other forage and fed to horses and cattle. This aids the animal's digestion and prevents animals from rejecting any part of their food. Chaff and hay play a vital role in most agricultural production as it was used for feeding horses. Chaff cutters have evolved from the basic machines into commercial standard machines that can be driven at various speeds and can achieved various lengths of cuts of chaff with respect to animal preference type. New chaff cutter machines include portable tractor driven chaff cutter - where chaff cutter can be in the field and load trolleys (if required). Key Words: chaff, uniform chopping, fodder, cutter, machine. 1. INTRODUCTION A chaff cutter is a mechanical device used to cut the straw or hay into small pieces so as to mix it together with other forage grass and fed to horses and cattle. This improves the animal's digestion and prevents animals from rejecting any part of their food. Chaff cutters have developed gradually from the simple machines to commercial standard machines that can be driven at various speeds so as to achieve various sizes of chaff with respect to animal preference type. New chaff cutter machines include portable tractor driven chaff cutters in which cutting of chaff is done in the field and loaded in trolleys. The present chaff cutter machine is less compact and having lack of safety and slow speed some compact machines having problem of blockage of grass. The population of cattle in India in 1987 was 199.7 million and in 2012, 199.9 million. Buffalo in 1987 -76.0 million but in 2012- 108.7 million. For such kind of population traditional human powered chaff cutting machines were used, but due to this the efforts for running the machine was physically demanding. And as per today’s scenario the population of buffalos is drastically increased. So to increase the productivity and reduce the physical effort required for running the machine the motorized machineries came into existence it is best for dairy farmers. Presently fodder cutting machines are electric driven as well as hand operated or engine driven. 2. PROBLEM DETECTION IN CHAFF CUTTING PROCESS The existing chaff cutting machines are observed and studied properly to detect the problems faced by the user are given below. 1. Bulky or less compact design 2. High voltage required such as 3 phase 3. Less safety while using by women 4. Noisy 5. Blockage of grass creates feed interference By observing above limitations we manufactured and modified present chaff cutter. 2.1 Developed Work 1) New cutting technology – The research work in this domain was studied and new methods are developed to achieve desired goal. 2) Safety- Highest priority is given to safety. Because it is widely used by farmers and his family so it should be used by all of them with less skill. 3) Single phase operation – The power supplied to machine is single phase so to make it easy to operate at any location. 4) Noise- Less noise 5) Compact – Compact in design cause to install machine at limited place 6) Aesthetically pleasing and attractive design. 2.2 Procedure 1. Supply power source to electric motor- Here we are using single phase 2 H.P motor so we require single phase power supply. Input speed of our electric motor is 1425 rpm. In order to rotate chaff cutting blade we have to rotate them by using power drives. 2. Power transmission through belt-pulley drive which are mounted on shaft- For transmitting power we choose belt & pulley as power drive .This belt pulley arrangement is coupled to cutting blades by using coupling shaft. Hence rotation of cutting blades occur. 3. Feeding of food material - We feed fodder through hopper. As feed trough has large opening & high length this provides guide way to grass & other fodder material like dry corn straw, grass, soya bean, wheat stalk, with ease and thus reducing the manual work of farmer and increases the fodder production. 4. Collect fodder from output tube -After rotation of cutting blades, it causes cutting of supplied feed material like grass dry corn straw into powder form. This light weight particles thrown away by centrifugal force of cutting blade towards outlet tube .So, place container for collecting fodder.