31 Questions
What is the main purpose of a drilling machine in a workshop?
Producing cylindrical holes in metal workpieces
Which part of a drilling machine is responsible for removing metal to create a hole?
Drill spindle
What is the purpose of making an indentation with a centre punch before drilling?
To mark the center of the hole location
Where is the base of a drilling machine typically positioned?
On a bench, pedestal, or floor
Which part of a drilling machine allows for adjusting the depth of the hole being drilled?
Table
What component of a drilling machine is responsible for driving the drill spindle at different speeds?
Electric motor
What is the main purpose of a gang drilling machine?
Performing multiple operations like drilling and tapping
What is the function of a multiple spindle drilling machine?
Drilling a number of holes simultaneously
Which factor is NOT considered when specifying a drilling machine?
Material used to make the drill
Why is it important to use work holding devices in a drilling machine?
To prevent injuries to the operator and damage to the machine
Which tool is used for enlarging and finishing a previously drilled hole?
Reamer
What is the main characteristic of twist drills used in shop work?
Have a straight flute design
Which type of drilling machine requires high cutting speeds and less feed to drill deep holes?
Deep hole drilling machine
In a multiple spindle drilling machine, how are all the spindles driven?
A single motor using gears drives all spindles
'T' - bolts and clamps are examples of:
'T' - bolts and clamps
'Flute' is a term associated with which tool used in drilling machines?
'Twist drill'
What type of material are straight fluted tools typically used for machining?
Brass
Which tool is used for enlarging the top of holes conically?
Countersink
What is the angle range generally found in countersinks?
60° - 90°
Taps have threads similar to which common object?
Bolt
What part of a twist drill is responsible for maintaining the alignment and ensures the hole is straight?
Land
Lips in a twist drill are formed by the intersection of which two parts?
Flank and face
Which type of drilling machine is designed for drilling small holes at high speeds in light jobs?
Sensitive drilling machine
What is the main feature that distinguishes a portable drilling machine from a standard drilling machine?
Portability
What is the function of the column in a sensitive drilling machine?
Supporting the work table
Which drilling machine can accommodate workpieces of different heights by adjusting the table vertically?
Upright drilling machine
What feature makes the radial drilling machine suitable for drilling on medium to large and heavy workpieces?
Swinging drill head
What is NOT a typical characteristic of a sensitive drilling machine?
$50-2000$ r.p.m. spindle rotation
Which drilling machine is named based on its ability to make holes in different positions and orientations?
Radial drilling machine
What sets the portable drilling machine apart from other types of machines?
'V'-belt transmission
What is a key difference between a sensitive and an upright drilling machine?
'T'-slots on the table with power feed arrangement
Learn about drilling operations, boring machines, and the importance of drilling machines in a workshop. Understand how drilling machines are designed for specific operations such as producing cylindrical holes on metal workpieces efficiently.
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