"Drilling is the process of cutting holes in a piece of material"
The above image shows a Pillar Drill Machine
|
The above images is a digram showing the parts of the Pillar Drill Machine
|
HOW TO CHANGE THE DRILLING SPEED
|
The speed at which the drill bit rotates can be changed. The speed at which the drill bit needs to rotate usually depends on the piece of material being drilled and the size of the drill bit.
SMALL drill bits usually require a fast drilling speed WHILE LARGE drill bits usually require a slow drilling speed The speed of the drill is changed by manually moving the belt across the pulleys shown in the photograph. |
The image above shows a pulley system within the Pillar Drill Machine. Altering the pulleys will change the speed of the drill
|
HOW TO DRILL A LARGE HOLE IN A PIECE OF METAL
|
When wanting to drill a large hole in a piece of metal the following process must be followed:
Example - 10mm hole 1. Centre Punch the work piece 2. Use a small drill bit to begin the hole (3mm) 3. Increase the size of the drill bit and drill again (6.5mm) 4. Increase the size of the drill bit and drill again (10mm) 5. Process Complete A large hole cannot be drilled in one go |
WHAT IS SWARF?
|
SWARF are the shavings and chippings of metal that are generated through processes such as drilling or milling. It is important to be careful when dealing with swarf as it is VERY SHARP and you will easily get cut. |
|
HOW TO CLEAN SWARF FROM THE MACHINE
THIS IS WRONG
YOU SHOULD NEVER USE YOUR HAND TO CLEAR SWARF AS IT IS SHARP AND WILL CUT YOUR HAND
|
THIS IS CORRECTUSING A BRUSH WILL ALLOW YOU TO CLEAR THE SWARF ONTO THE FLOOR. THIS IS THE CORRECT METHOD
|