Fitting Shop Operations and Safety Rules

Fitting Shop Objectives

• Students will be able to understand operations in the fitting shop
• Students will understand various tools used in the fitting shop
• Students will practice in the fitting shop

Safety Precautions and Rules

• Clothing: Do not wear loose clothes that could get caught in machinery. Wear tight-fitting clothes.
• Eye Protection: Always wear safety goggles while working in the shop.
• Jewelry and Ties: Remove ties, watches, rings, and other jewelry before entering the shop.
• Hair: Secure long hair to prevent it from becoming entangled in machinery.
• Footwear: Wear safety shoes (steel-toe) to protect feet from falling objects. Avoid sandals or soft shoes.

Fitting

• Fitting involves preparing parts to touch or join seamlessly, one inside the other or sliding upon each other. The parts need to hold firmly together.

Fitting Shop Description

• Fitting shop is the place where fitting and assembling work is performed.
• Some repair, maintenance, and die punch work happens here as well.
• Bench work involves creating an item by hand.
• Fitting is often about assembling parts and removing material to ensure a correct fit, this may or may not happen on the bench.

Fitting Shop Operations

• Hand operations include measuring, marking, filing, sawing, scraping, drilling, tapping, die sinking, and grinding. Hand tools and power-operated portable tools are used.
• Measuring and maintaining equipment is also important in the fitting shop.
• Many hand tools and devices are used in fitting work.

Measuring and Marking Tools

• Measurement: Determining size, quantity, or degree using instruments and devices.
• Marking: Placing lines and points on work pieces.
• Tools like steel rules, try squares, dividers, calipers, scribers, punches, vernier calipers, micrometers, surface gauges, and drill gauges are described.

Cutting Tools

• Hack Saw: Used for cutting metal. Different frame types use various blade lengths.
• Blades are made from high-carbon or low-alloy steel.
• Common blades are 0.7 mm thick and between 20-30cm long.

Additional Cutting Tools

• Chisels: Used to cut thin sheets or remove material from large surfaces, producing lower accuracy.
• Drills: Used to make holes in metal.
• Threading Tools (Taps and Dies): Used to create internal and external threads on rods or tubes.

Finishing Tools

• Files: Tools with multiple teeth-like cutting edges for creating smooth surfaces. They are various shapes like flat, round, square, triangular, and knife edge.
• Reamer: Used to control the diameter of a hole to improve the internal surface finish and roundness.

Striking Tools

• Hammers: Used for striking chisels or punches. Different types of hammers (ball peen, cross peen, straight peen, and claw) are used for different purposes like punching, chipping, and marking.

Holding Tools

• Vices: Work-holding devices used to securely grip the work piece during operations. Bench vices have a cast iron body, movable jaw, fixed jaw, handle, and a threaded screw.
• Pipe Vices: Hold pipes securely for operations.
• V-Blocks: Supports round bars for operations like drilling, while holding them at the correct angle.
• C-Clamps: Useful for clamping and holding round bar shapes in fitting.

Supporting and Miscellaneous Tools

• Anvil: Supports work pieces during hammering, chiseling, and punching operations.
• File Cards: Remove small chips from file surfaces.
• Screwdrivers: Used for tightening and loosening screws.
• Spanners/Wrenches: Used to tighten or loosen nuts and bolts (single-ended, double-ended, adjustable, box).