- Fitting involves shaping, assembling, and finishing metal or other materials using hand tools, power tools, and precision instruments.
- Common Fitting Hand Tools & Their Uses
| Tool | Function | Application |
|---|
| Hacksaw | Cutting metal, plastic, wood | Cutting rods, pipes, sheets |
| Files | Smoothening rough edges, shaping | Used for precision finishing |
| Chisels | Removing excess material | Used for shaping metal & wood |
| Hammers | Striking, bending, shaping | Used in fitting and assembling |
| Punches | Marking and indenting metal | Used before drilling holes |
| Taps & Dies | Creating internal/external threads | Used for making screw threads |
| Screwdrivers | Driving screws | Assembling & disassembling components |
| Spanners & Wrenches | Tightening & loosening nuts and bolts | Used in mechanical fitting |
- Care & Maintenance of Hand Tools
- Keep clean & free from rust (apply light oil coating).
- Store in dry, organized toolboxes to prevent damage.
- Sharpen cutting tools (files, chisels) regularly for efficiency.
- Power tools increase efficiency and precision in fitting tasks.
| Power Tool | Function | Application |
|---|
| Drilling Machine | Drills holes in metal, wood, plastic | Used in assembly and fabrication |
| Grinding Machine | Smoothens & sharpens surfaces | Used for removing excess material |
| Power Hacksaw | Cutting metal with precision | Used in industrial cutting |
| Angle Grinder | Cutting, grinding, polishing | Used for shaping and finishing |
| Electric Screwdriver | Fastens screws with power | Speeds up assembly work |
- Care & Maintenance of Power Tools
- Inspect wiring & plugs for damage to prevent electrical hazards.
- Keep tools lubricated & free from debris.
- Store in dry places to prevent corrosion.
- Use proper protective gear (gloves, goggles) during operation.
- Precision measuring tools are essential for accuracy in fitting tasks.
- Types of Measuring Instruments
| Instrument | Function | Accuracy |
|---|
| Steel Rule | Measuring lengths, depths | ±0.5mm |
| Vernier Caliper | Measures internal & external dimensions | ±0.02mm |
| Micrometer Screw Gauge | Measures thickness & diameters | ±0.01mm |
| Dial Gauge | Measures small linear distances | ±0.001mm |
| Feeler Gauge | Measures gap widths | ±0.02mm |
| Bevel Protector | Measures angles accurately | ±0.1° |
- Care & Maintenance of Measuring Instruments
- Store in dry places to prevent rust.
- Avoid dropping or mishandling to maintain accuracy.
- Regular calibration ensures precise measurements.
- Clean with soft cloth & oil for long-lasting performance.
Types of Drilling Machines & Their Applications
| Type | Application |
|---|
| Hand Drill | Small, manual drilling operations |
| Bench Drill | Mounted drill for precision hole-making |
| Pillar Drill | Heavy-duty drilling in workshops |
| Radial Drill | Used for large & heavy workpieces |
| CNC Drill | Automated drilling in manufacturing |
- Care & Maintenance of Drilling Machines
- Keep chuck & drill bits clean.
- Regularly inspect motor & wiring.
- Lubricate moving parts to prevent overheating.
Types of Grinding Machines
| Type | Function |
|---|
| Bench Grinder | Sharpens tools, removes burrs |
| Surface Grinder | Produces smooth finishes |
| Cylindrical Grinder | Grinds cylindrical surfaces |
| Angle Grinder | Cuts, polishes, and removes rust |
- Care & Maintenance of Grinding Machines
- Check grinding wheels for cracks before use.
- Ensure proper wheel alignment to prevent wobbling.
- Use correct grinding speed for the material.
