Modified Design of a Precision Planter For a Robotic Assistant Farmer

Chapter 2- Experiments in the Soil Bin: Disc-Soil Interaction ............................................................. 19 
2-1-Introduction ...................................................................................................................................... 19 
2-2- Test setup: ....................................................................................................................................... 23 
2-3- Test Parameters: .............................................................................................................................. 26 
2-4- Test procedure: ................................................................................................................................ 27 
2-5- Test results and discussion: ............................................................................................................. 29 
2-5-1- Draft force: ............................................................................................................................... 30 

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vii 
5-2- Vertical Force: ............................................................................................................................. 33 
2-5-3- Lateral Force: ........................................................................................................................... 36 
2-6- Summary: ........................................................................................................................................ 38 
Chapter 3- Design ..................................................................................................................................... 39 
3-1- Design process ................................................................................................................................. 39 
3-2- Conceptual design ........................................................................................................................... 40 
3-2-1-Furrow Opener Assembly ......................................................................................................... 44 
3-2-2-Packing Assembly ..................................................................................................................... 47 
3-2-3-Seeding Assembly ..................................................................................................................... 48 
3-2-4-Connection Assembly ............................................................................................................... 53 
3-3-Detail Design and Analysis: ............................................................................................................. 55 
3-3-1-Static force analysis: ................................................................................................................. 55 
3-3-2- Optimization of the packing pressure and spring force: .......................................................... 60 
3-3-3- Spring Design: ......................................................................................................................... 65 
3-4-Summary .......................................................................................................................................... 75