C3 - LT #2 - Drill Press Flashcards
Hard materials should be drilled with a speed setting that is:
Slow or medium
Explain what can happen when feed pressure is too light:
Material is burnt due to friction build-up
To lay out the location of a small hole to be drilled in metal, use a:
Centre punch
Before using a drill press, the adjustment you check first is the:
Speed setting
When working with a drill press, you can prevent hand-held work from rotating by using a:
vice, clamp, or fence.
Cutting plugs from hardwood rather than from softwood requires what speed setting?
Slow speed setting
Square or rectangular holes in wood are made with a dress press equipped with:
Mortising attachment
How to make several holes to a predetermined depth with a drill press?
1) Set depth on a depth stop
2) Check on the depth on a piece of scrap wood
What happens if the speed setting on a drill press is too high?
The material will burn.
How do you prevent a tear out on the bottoms of the workpiece if you drill through a hole?
1) Sharp bit
2) Drill halfway on each side
3) Have a piece of material under the workpiece.
What is the purpose of the quill?
Vertical sleeve contains the rotating shaft to which the drill chuck and the drill bit are attached. Can be moved up and down during drill operations and it is spring-loaded.
How do you lock the quill to a specific height?
Quill clamp
The feed lever rotates:
The pinion shaft
What is the spindle?
Rotating shaft, which is housed inside the quill.
What is the geared chuck?
Holds the drill bit, “geared chuck” means it is tightened with a geared chuck key.
When drilling metal, how do you mark the hole location on a small hole?
With the center punch.
The average drill press with four step pulleys on the motor and spindle has the following spindle speeds:
Setting No 1. 700 RPM
Setting No 2. 1250 RPM
Setting No 3. 2400 RPM
Setting No 4. 4700 RPM
If drill bit becomes too hot when drilling then what do you do?
Slower speed
When drilling through wood, if the speed is too slow, the bit will:
Tear wood out
When drilling through wood, if the speed is too high, the bit will:
Burn the sides of the hole, a dull bit will both tear and burn.
Too much feed pressure causes the bit to:
Tear the wood or jame in the hole
Best practice for boring through hardwood:
The bit heats up,
Raise the bit often to clear it of wood chips.
Best practice for sanding with a drill press?
Keep moving the stock, holding it in place will quickly gum up the drum and burn the wood.
The most common bit for drilling metals is:
The twist drill
1) Metric in mm increments
2) Fractional sizes in increments of 1/32 to 2”
3) Numbered drill, wire gauge sizes ranging from 1 to 80 with number 1 being the largest at just under a 1/4”
4) Letter sizes from A to Z A being under 6 and Z over 10 mm
What is an alternative to a drill press vice?
A handscrew
What is the key to successful drilling?
Larger hole, slower the speed
Harder material, slower the speed
A drill with a scew point is designed for:
A hand brace
Remove the chuck key
Before getting a new bit, when changing drill bits.
Forstner
Multipur bit
Multipur bit
