Mechanical · Agricultural machine · Final year project
Design and Fabrication of Multipurpose Agricultural Machine
A push-type farm machine that combines ploughing, seed sowing and other operations. Pushed forward it ploughs with its tines, and a seed hopper drops seeds into the furrow, saving the cost of separate tools.
What is the Design and Fabrication of Multipurpose Agricultural Machine project?
A push-type farm machine that combines ploughing, seed sowing and other operations. Pushed forward it ploughs with its tines, and a seed hopper drops seeds into the furrow, saving the cost of separate tools.
Key facts
- Type
- Final year project · Advanced
- Suitable for
- Diploma capstone and B.E / B.Tech final year
- Build time
- 6 to 8 weeks
- Estimated component cost
- ₹9,800 – ₹14,400
- Guidance from
- ₹9,999 (Hardware / IoT Final Year)
How the Design and Fabrication of Multipurpose Agricultural Machine works
- The mild steel frame and fabrication forms the base that carries every other part, so it is designed first from the load and size of the machine.
- The DC geared motor provides the driving motion.
- Motion is transmitted through DC geared motor and linkages, cam and lever parts, which set the speed, torque and direction at the working end.
- The Wheels / castor wheels allow the machine or vehicle to move.
- The Tank, nozzle and plumbing stores and delivers the fluid.
- The Mini submersible water pump moves water for irrigation, dispensing or cooling.
Block diagram
Power
DC geared motorMini submersible water pumpTransmission
DC geared motorLinkages, cam and lever partsWorking unit
Wheels / castor wheelsTank, nozzle and plumbingLinkages, cam and lever partsStructure
Frame and mountsComponents list and cost
Typical prices from Indian online stores and electronics markets (Lamington Road, Budhwar Peth, SP Road). Buy from one store where you can to save on shipping.
| Component | Qty | What it does | Approx. cost |
|---|---|---|---|
| DC geared motor | 1 | Provides the driving motion. | ₹250 |
| Mini submersible water pump (12 V) | 1 | Moves water for irrigation, dispensing or cooling. | ₹180 |
| Wheels / castor wheels | 1 | Allow the machine or vehicle to move. | ₹400 |
| Tank, nozzle and plumbing | 1 | Stores and delivers the fluid. | ₹450 |
| Mild steel frame and fabrication | 2 | Forms the main structure that holds all parts. | ₹5,000 |
| Linkages, cam and lever parts | 1 | Convert one type of motion into another. | ₹400 |
| Welding, cutting and machining labour | 1 | Needed for this type of build. | ₹2,200 |
| Hopper | 1 | Part from the design specification | ₹400* |
| Seed roller | 1 | Part from the design specification | ₹400* |
| Controller Circuitry | 1 | Part from the design specification | ₹400* |
| Mounts, screws, nuts and small hardware | 1 | Cables, connectors and jumper wires and enclosure, mounts and fasteners. | ₹420 |
| Paint, finishing and workshop consumables | 1 | Project overhead | ₹600 |
| Transport of material | 1 | Project overhead | ₹400 |
| Estimated total | Varies with brand, quality and city | ₹9,800 – ₹14,400 |
Prices are estimates for budgeting; items marked * depend on the exact size or model chosen. We confirm the bill of materials when your design is frozen, and components are charged at actual cost with bills.
How much does this project cost?
| Option | What you get | Cost |
|---|---|---|
| Components only | You buy the parts and build it yourself | ₹9,800 – ₹14,400 |
| Hardware / IoT Final Year | Working model or guided build, Circuit diagram and bill of materials, Firmware / code with explanation | from ₹9,999 + components |
| Capstone Project (CPE) | Working project or model, Black book in MSBTE format, Step-by-step explanation | ₹9,999 + components |
| Diploma ITR | 100% working source code, Project report PDF, PPT | ₹1,999 + components |
No GST and no hidden charges. Use the cost calculator for a quote with your deadline and add-ons, or see all plans.
Download the project brief (PDF)
Summary, working, components and cost and viva questions on one branded PDF to show your guide or team. To get it developed, contact us on WhatsApp.
What you submit with this project
- Working model with circuit diagram and program code
- Project report or black book in your university's chapter order (block diagram, circuit, calculations, results)
- Presentation for the review and final viva
- Synopsis for topic approval, if your college asks for one
Mechanical viva questions on this project
What is the aim of the Design and Fabrication of Multipurpose Agricultural Machine project?
A push-type farm machine that combines ploughing, seed sowing and other operations. Pushed forward it ploughs with its tines, and a seed hopper drops seeds into the furrow, saving the cost of separate tools.
Explain the working of your project in short.
The mild steel frame and fabrication forms the base that carries every other part, so it is designed first from the load and size of the machine. The DC geared motor provides the driving motion. Motion is transmitted through DC geared motor and linkages, cam and lever parts, which set the speed, torque and direction at the working end. The Wheels / castor wheels allow the machine or vehicle to move.
Why is a geared motor used?
The gearbox reduces speed and multiplies torque, so a small DC motor can move a vehicle or mechanism smoothly. Torque increases roughly by the gear ratio.
How is the pump switched by the controller?
Through a relay or MOSFET, because the pump runs at 12 V and draws more current than the controller pin can provide.
How is the wheel size selected?
From the required speed and torque: linear speed = π × D × rpm ÷ 60. A larger wheel gives more speed but needs more torque.
How does nozzle size affect spraying?
A smaller nozzle gives finer droplets and better coverage at higher pressure, while a larger nozzle gives higher flow with coarser droplets.
Why is mild steel used for the frame?
It is cheap, strong, easy to cut and weld and widely available. A frame of 25 mm square pipe is enough for most student models.
Which material did you select for the main parts and why?
Mild steel (MS) is used for the frame because it is strong, cheap, easy to cut and weld and available everywhere. Shafts are made of EN8 or bright mild steel for strength, and parts that do not carry load can be aluminium or acrylic to reduce weight.
What factor of safety did you take in your design?
A factor of safety of 2 to 3 is taken for static parts and 3 to 5 for parts under shock or fatigue loading. Allowable stress = yield strength ÷ factor of safety, and each part is checked against it.
How did you estimate the cost of the project?
The cost is the sum of raw material, bought-out parts, machining or fabrication and overheads. Our estimate for this model is about ₹9,800 to ₹14,400, depending on size, material and the workshop rates in your city.
Which manufacturing processes were used?
Cutting and grinding of sections, arc or MIG welding of the frame, drilling for mounting holes, turning of the shafts and fitting of bearings and the drive, followed by assembly, alignment and painting.
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