FARM MACHINERY DESIGN
AE 725 03 Course Objective:
To familiarize and orient the students in theory, planning, designing, technological development, modification and exploitation of small and medium scale farm machinery.
- Introduction to Design Parameters and Procedure(3 hours)
- Principles of Agricultural Machine Design
- Design Parameters: Force, Stress, Reliability, Factor of Safety, Limit, Fit and Tolerances
- Farm Machinery Design Procedure:
- Recognition and Identification of Need
- Definition of Problem
- Information on Functional Requirements
- Modeling and Simulation
- Prototype and Its Performance
- Material of Construction for Agricultural Machinery, their Composition and Heat Treatment Process (2 hours)
- General Properties of Critical Components of Farm Machinery
- Material Selection Criteria
- Force Analysis on Tillage Tools and Hitching System(6 hours)
- Introduction
- Forces Acting on Tillage Implement
- Measurement of Soil Resistance
- Vertical Effects of Hitching
- Horizontal Effects of Hitching
- Design Considerations of Hitches
- Hitch System Design
- Design and Selection of Power Transmission Components in Agricultural Machines(4 hours)
- Introduction
- V‐belt, Chain, Rope, Gear, Shaft, Hydraulic Drives and Joints
- Capacities of Agricultural V‐belts and Chain Drives
- PTO Drives
- Telescopic Shaft
- Safety Aspects in the Design of Agricultural Machines(2 hours)
- Introduction
- Safety Factors‐ Concept and Application
- Overload Safety Devices
- Design Methods of Mould Board Plough(5 hours)
- Types of Mould Board Plough
- Design of Frontal Plan
- Design of Cylindrical, Cylindroidal, and Semi‐Helical Type Mould Board
- Standard Dimension of Plogh Share and Landside
- Design Methods of Disk Implements(4 hours)
- Introduction to Disk Tools and Their Design Considrations
- Design of Disk Tools for Disk Harrow and Disk Plough
- Spacing in Multi Disk Implements
- Determination of Loads for Design of Standard
- Selection of Bearings
- Design Methods of Cultivators(3 hours)
- Types of Cultivators and Their Applications
- Design of Soil Engaging Tools in Cultivators‐ Shovel, Sweep
- Design of Shank
- Design Methods of Rotary Tillage Machines(4 hours)
- Action of Rotary Tillage Machines
- Soil Reactions in Rotary Tillage Tools
- Design Considerations for Rotavator Blades
- Rotavator Blade Arrangement and Configuration
- Design Methods of Sowing and Planting Implements(4 hours)
- Design Parameters of Sowing and Planting Implements
- Design of Seed Metering Mechanism
- Types of Furrow Openers and Covering Devices
- Design Considerations for Furrow Openers
- Design Considerations for Seed and Fertilizer Box and Frame
- Design Methods of Reaper(3 hours)
- Types of Reaper and their Functional Requirements
- Components of a Vertical Conveyor Reaper
- Design and Selection of Different Components of a Vertical Conveyor Reaper
- Design Considerations and Selection of Conveyors in Harvesting Machines
- Design Methods of Threshers(5 hours)
- Types of Threshers and Their Components
- Bond between Grain and Spike
- Parameters of Thresher drum‐ length, diameter, speed, teeth arrangement
- Selection of Drum
- Drum‐Concave Clearance
- Design of Feeding Chute
- Cleaning Sieves and their Design Considerations
- Thresher Adjustments
Tutorials and Practicals:
- Design Problem on Force Analysis of Tillage Tools and Hitching System
- Design Problems on Mould Board Plough
- Design Problems on Disk Implements
- Design Problems on Cultivators
- Design Problems on Rotary Tillage Implements
- Design Problems on Sowing and Planting Equipments
- Design Problems on Vertical Conveyor Reaper
- Design Problems on Rice and Wheat Threshers
References:
- D. N. Sharma and S. Mukesh. 2008. Farm Machinery design: Principles and Problems. Jain Brothers, New Delhi (Latest Edition).
- H. Bernacki, J. Haman and Cz Kanafojski. 1985. Agricultural Machines: Theory and Construction. Vol. I & II. US Department of Commerce. National Technical Information Service.
- Bainer R., Kepner, R.A. and Barger E. L. Principles of Farm Machinery. John Wiley & Sons Publications (latest edition‐Indian/Low Cost Edition Preferred)
- Agricultural Machinery Design and Data Hand Book (Seeders and Planters). 1991. Regional Network of Agricultural Mechanization (RNAM), Philippines.
- Wilkinson, Robert H. and Braunbeck, Oscar A. 1997. Elements of Agricultural Machinery (Vol. I). FAO, Rome
- Crossley, P. and Kilgour J. 1983. Small Farm Mechanization for Developing Countries. John Wiley & Sons, New York (latest edition‐ Indian/Low Cost Edition Preferred)
- Krutz, G., Thomson L. and Claar P. 1984. Design of Agricultural Machinery. John Wiley & Sons, New York (latest edition‐ Indian/Low Cost Edition Preferred)
- Klenin, N.I., Popov I. F. and Sakun V.A. 1985. Agricultural Machines. Amerind Publishing Co. Pvt. Ltd.(latest edition‐ Indian/Low Cost Edition Preferred)
- Sineokov. G.N. Design of Soil Tillage Machines. Indian National Scientific Documentation Center, New Delhi.
- FAO Bulletin on Agricultural Engineering Development: Selection of Mechanization Inputs. FAO Agricultural Service, Rome.
Evaluation Scheme:
The questions will cover all the chapters in the Syllabus. The evaluation scheme will be as indicated in the table below.
Chapter |
Hours |
Marks Distribution* |
1 |
3 |
8 |
2 |
2 |
3 |
6 |
8 |
4 |
4 |
8 |
5 |
2 |
6 |
5 |
8 |
7 |
4 |
8 |
8 |
3 |
8 |
9 |
4 |
8 |
10 |
4 |
8 |
11 |
3 |
8 |
12 |
5 |
8 |
Total |
45 |
80 |
*There may be minor variation in marks distribution
|