Mechanical · Design and analysis (CAD/FEA) · Mini project
Mini Mechanical Wire & Rod Cutter Machine
A low-cost wire cutter that works without electronics. A motor-driven pulley wheel grips and feeds the wire, and rollers at the top guide it to a cutter that cuts it into pieces.
What is the Mini Mechanical Wire & Rod Cutter Machine project?
A low-cost wire cutter that works without electronics. A motor-driven pulley wheel grips and feeds the wire, and rollers at the top guide it to a cutter that cuts it into pieces.
Key facts
- Branch
- Mechanical & Automobile Engineering; also suits Mechatronics
- Type
- Mini project · Beginner
- Suitable for
- Diploma micro-projects and B.E mini projects
- Build time
- 2 to 3 weeks
- Estimated component cost
- ₹6,100 – ₹9,000
- Guidance from
- ₹2,999 (Core Branch Mini Project)
How the Mini Mechanical Wire & Rod Cutter 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.
- Motion is transmitted through pulleys and V-belt, which set the speed, torque and direction at the working end.
- The Wheels / castor wheels allow the machine or vehicle to move.
- The Springs store energy and return parts to position.
Block diagram
Transmission
Pulleys and V-beltWorking unit
Wheels / castor wheelsSpringsCutting bladeStructure
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 |
|---|---|---|---|
| Pulleys and V-belt | 1 | Transmit rotation between shafts. | ₹350 |
| Wheels / castor wheels | 1 | Allow the machine or vehicle to move. | ₹400 |
| Springs | 1 | Store energy and return parts to position. | ₹150 |
| Cutting blade | 1 | Cuts the material. | ₹300 |
| Mild steel frame and fabrication | 1 | Forms the main structure that holds all parts. | ₹2,500 |
| Welding, cutting and machining labour | 1 | Needed for this type of build. | ₹2,200 |
| Mounts, screws, nuts and small hardware | 1 | Enclosure, mounts and fasteners. | ₹300 |
| Paint, finishing and workshop consumables | 1 | Project overhead | ₹600 |
| Transport of material | 1 | Project overhead | ₹400 |
| Estimated total | Varies with brand, quality and city | ₹6,100 – ₹9,000 |
Prices are estimates for budgeting. 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 | ₹6,100 – ₹9,000 |
| Core Branch Mini Project | MATLAB / Proteus / CAD simulation files, Code, firmware or 2D drawings, Mini project report (20–30 pages) | ₹2,999 + components |
| Diploma Micro-Project | Micro-project report (10–15 pages), Relevant code, model or case study, MSBTE annexures | ₹899 + 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 Mini Mechanical Wire & Rod Cutter Machine project?
A low-cost wire cutter that works without electronics. A motor-driven pulley wheel grips and feeds the wire, and rollers at the top guide it to a cutter that cuts it into pieces.
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. Motion is transmitted through pulleys and V-belt, which set the speed, torque and direction at the working end. The Wheels / castor wheels allow the machine or vehicle to move. The Springs store energy and return parts to position.
What is the velocity ratio of a belt drive?
N1 × D1 = N2 × D2, so the speed ratio is the inverse of the pulley diameter ratio (ignoring slip).
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.
What is spring stiffness?
The force needed per unit deflection, k = F ÷ x (Hooke's law). A stiffer spring deflects less under the same load.
Which material is used for the cutting blade and why?
High-carbon or high-speed steel, because it keeps a sharp edge and resists wear and impact.
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 ₹6,100 to ₹9,000, 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.
Is your system open-loop or closed-loop?
Mainly open-loop: the controller runs the actuators for a set time or number of steps. Adding a sensor for feedback would make it closed-loop and more accurate.
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Want to build Mini Mechanical Wire & Rod Cutter Machine?
Send your college, deadline and team size. We confirm the scope, cost and what you will submit.