Drilling
- Created by: KittyKatKatiexx
- Created on: 13-03-17 15:46
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- Drilling
- Process of making holes
- Secured
- Hand operated drill
- Drilling machine
- Use rotating cutting tool
- Secured
- Hand operated drill
- Drilling machine
- Secured
- Secured
- Most common: Twist Drill
- Manufactured from high speed steel
- Used to produce holes in most materials
- Two types
- Parallel shank
- Held in drilling machine by a chuck
- Taper shank
- Placed directly into machine and held through friction
- Parallel shank
- Drill Bits
- Have fluting or grooves along them
- Allow Swarf + waste material to be carried away
- Need lubricants when drilling metals
- Keep tip of drill cool
- Keep drilling efficient
- Have fluting or grooves along them
- Other types of drills
- Flat bits
- Drill deep holes in wood
- Forstner bits
- Drill flat bottomed holes in wood
- Auger Bits
- Drill deep holes using carpenters brace
- Countersunk bits
- Conical drill bits
- 90 degrees
- Allows countersunk head screw to be inserted
- Head of screw is flush with surface of material
- Hole Saws
- Circular shaped cutting rings
- 20mm-150mm diameter
- Circular shaped cutting rings
- Tank cutters
- Circular cutters
- Adjustable radius
- Circular cutters
- Flat bits
- Wood is easier and faster to drill into
- Don't need cutting fluids
- However could overhead and burn
- Important to use sharp drill set to correct rotational speed
- However could overhead and burn
- Don't need cutting fluids
- Marking out
- Must establish correct posistion
- Metal
- Use a scriber
- Must centre punch where hole is going to be
- Guide drill into correct position
- Wood
- Sharp pencil
- Drill lines which cross the hole that needs to be drilled
- Metal
- Use a scriber
- Must centre punch where hole is going to be
- Guide drill into correct position
- Metal
- Metal
- Must establish correct posistion
- Process of making holes
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