WORKSHOP ASSIGNMENTBY GROUP MEMBERSDDP-SP13-BEC-053DDP-SP13-BEC-027DDP-SP13-BEC-051DDP-SP13-BEC-101 DDP-SP13-BEC-91

• Fitting Shop• In fitting shop various processes are performed on metals to give them desired shape and size

and fit them with mating part.Types of metals1) Ferrous metals:- contains iron as their essential constituent e.g. Steel, cast iron2) Non-Ferrous metals: – does not contain iron as their essential constituent e.g. Brass, bronze, aluminum etc.Safety PrecautionsSafety precautions should be taken when using hand tool and equipment.

• Files• The file is a harden piece of high grade steel or high carbon steel with slating saws. It is used

to cut smooth or fit metal parts. It is used to cut the metal expected harden steel and it is used in forward stroke.

• Some file types are discussed in the next pages……

• Flat Bastard File• Double cut• Is used to remove roughness on the metals

• Mill Bastard File• Single cut• Is used to smoothen

• Half Round Bastard File• Double cut • Is used to make half rounds in the work piece

• Square Bastard File• Double cut • Is used to make slots in the work piece

• Square Mill Bastard File• Is single cut• To make slots on work pieces (something like gears)

• Flat Wood File• To make surface plain

• Half Round Wood File• To make half rounds on wood

• Round Wood File• Is used to make rounds inside wood

• Round Bastard File• To make hole larger• Also to remove roughness inside the hole

Some other apparatus of the fitting shop includes….Fitting tools The tools used in fitting shop may be classified into following groups.Measuring: Steel Rule, Inside Caliper, Outside Caliper and VeneerHolding: All types of vicesCutting: Chisel, Hacksaw and FilesStriking: All types of HammersDrilling: Various types of DrillsThreading: Tap and DiesMarking: Scriber, Divider and Center PunchFixing: Spanner, Wrenches, Keys and Screw DriverChecking: All types of Gauges

Pillar Drilling MachineA pillar drill is a stationery drilling machine that can be mounted on a stand. It is used to drill hard materials like metals. It is more powerful and reliable than a hand-held drilling machine.There are two types of machine drill, the bench drill and the pillar drill. The bench drill is used for drilling holes through materials including a range of woods, plastics and metals. It is normally bolted to a bench so that it cannot be pushed over and that larger pieces of material can be drilled safely. The larger version of the machine drill is called the pillar drill. This has a long column which stands on the floor. This can do exactly the same work as the bench drill but because of its larger size it is capable of being used to drill larger pieces of materials and produce larger holes.

Examples Of Bits Used With Drilling Machines

TWIST DRILL FORSTNER BIT HOLE SAW

Used for drilling holes, a normal drill set has sizes from 1 to 14 mm.

Used for larger diameter holes. When using this bit hole is drilled slowly so bit doesn’t jam in the wood.

For larger diameter a ‘hole saw’ can be used. The blade can be changed to give different sizes/diameter.

These sides have been smoothened by files

This hole has been drilled by the pillar drilling machine followed by hand taps used to thread in the holes

Only a hole was drilled into using the pillar drilling machine

Metal was cut into using the hand saw

Center Punch• Introduction

A center punch is a hardened long slender tool that is machined and ground to a conical point of 90°. It is used to produce a 90° dent on the surface of material to start a drill hole or as the center of a circle to be marked with a pair of dividers.

• How to use itPlace the point in the correct position and hit center punch with a hammer. A dent of 90° is left in the component.

• Where to use itUsed when marking out or drilling holes.

• MaintenanceSharpening required when the point becomes blunt. Take care as over heating will soften the point.

• OHS issuesSafety glasses must be used to protect eyes from shrapnel from the hit end of the center punch or the hammer head. Take care not hit hand with the hammer.