Aim:

To prepare and assemble a V-fitting joint using mild steel (MS) pieces by performing various fitting operations.

Materials & Tools Required:

• Material: Mild Steel (MS) Flat Pieces (Size: 100 mm × 40 mm × 5 mm)

• Measuring Tools: Steel rule, Vernier caliper, Protractor

• Marking Tools: Scriber, Try square, Divider, Dot punch

• Cutting Tools: Hacksaw, Chisel

• Filing Tools: Traingular file

• Finishing Tools: Emery paper (if required)

• Holding Tools: Bench vice

• Inspection Tools: Try square

Operations:

1. Measuring and Marking

2. Hack Sawing (Cutting the Metal Piece)

3. Chiseling (Removing Excess Metal)

4. Filing (Smoothing and Shaping the Surface)

5. Assembly and Inspection

Procedure:

1. Clean the MS workpieces using a cloth and emery paper to remove dirt, rust and oil. Ensure the surface is free from irregularities before marking.

2. Measure and mark the required dimensions using a steel rule and scriber. Use a protractor to mark a 45° or 60° angle for the V-joint. Verify the accuracy of markings using a try square.

3. Use a dot punch to create small reference points along the marked lines.

4. Hold the MS pieces in a bench vice to prevent movement. Use a hacksaw to cut along the marked V-shape. Make sure the cut is straight and smooth for a proper fit.

5. Filing the cut edges using a flat file to smooth the cut edges and remove burrs. Use a traingular file for shaping V-section shape. Maintain the angle while filing for a perfect fit.

6. Place both MS pieces together to check the accuracy of the V-joint. Ensure that the pieces fit tightly without gaps. Use a try square to check for correct alignment , adjust if needed.

7. In the final process, Use file to smoothen the surface and remove sharp edges. Inspect the V-joint fit, angle accuracy, and surface finish. Again verify the joint using a try square (if required).

Precautions: 

1. Use safety goggles and gloves while cutting and filing.

2. Ensure accurate marking before cutting to avoid material wastage.

3. Secure the workpiece firmly in a vice while cutting or filing.

4. Apply uniform pressure while filing to maintain the correct angle.

Result:

A V-fitting joint is successfully fabricated using MS pieces, maintaining the required accuracy and alignment.