Machine Tool Practices, 11e (Kibbe)
Section H – Drilling Machines
1) The two main types of drill presses are:
A) Sensitive and radial
B) Adjustable, and automatic
C) Upright, and radial
D) Upright and production
2) The upright drill press allows the operator to feel the cutting action of the drill because it is
hand-fed into the work.
3) The upright drill press has 4 major parts:
A) Quill, spindle, motor, table
B) Base, column, spindle, motor
C) Head, column, table, and base
D) Base, spindle, table, motor
4) On a radial drill press, the work is clamped to the table or base, and the drill can then be
positioned where it is needed by swinging the arm and moving the head along the arm.
5) The upright drill press is similar to the radial drill press, but it is made for heavier work.
6) The radial arm drill press is the most versatile type of drilling machine.
9) Tapered shank drills have a Morse taper.
10) The best drill for removing chips while drilling deep holes would be the:
A) Low-helix
B) Low-spiral
C) Deep-fluted
D) High-helix
11) Morse taper shanks on drills and Morse tapers in drill press spindles come in multiple sizes
and are numbered from 1 to 6.
12) A _______ drill is simply a flat blade with sharpened cutting lips.
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13) The best choice when drilling brass or other soft materials would be the:
A) Straight flute
B) High-helix
C) Fast-spiral
D) Slow-spiral
14) There are four drill size series: fractional, number, letter, and English.
15) Center drills are used to reorient the center of a hole that was drilled slightly off location.
16) Spotting drills are used to position holes accurately for further drilling with regular drills.
17) A step drill is used to make two or more holes of different diameters in one drilling
operation.
18) A spade drill is a flat blade with sharpened cutting edges.
19) The 4 series of drills are:
A) Fractional, number, letter, and metric
B) Fractional, decimal, number, and metric
C) Fractional, decimal, letter, metric
D) There are only 2: English and metric.
20) A ________ is used to remove a tapered drill from a sleeve.
A) brass or lead hammer
B) slide
C) drift
D) allen wrench
21) The web of a twist drill is thicker near the shank.
22) If the drill has been sharpened with unequal angles, the lip with the large angle will do most
of the cutting.
23) The frequent use of a ________ during the sharpening process will help keep the point
accurate and prevent drilling problems.
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A) rule
B) drill point gage
C) drill lip rule
D) angle gage
24) The standard drill point angle is:
A) 118 degrees
B) 120 degrees
C) 110 degrees
D) 60 degrees included
25) When drilling soft materials, a drill point angle of between 60 and 90 degrees would work
best.
26) Assuming that a drill press operator has selected the proper tool, assured his own safety and
adequately clamped his workpiece, what other considerations should he make before starting the
drill press?
A) Get lubricating oil, turn on the machine and make a chip. If the chips are long and blue, the
feed and speed are just right
B) Set up the correct speed and feed. Select a cutting tool
C) Make sure he has his foreman’s consent
D) Consult a drill feed chart and set the drill RPM. Then calculate the feed per revolution
27) If the drilling speed is too high for the diameter of the drill and for the material being drilled,
the result is:
A) Chips jammed in the flutes
B) The margins or outer corners will break down
C) A rough hole
D) More feed is required to get the drill to cut and it often breaks
28) If the drilling speed is too low for the diameter of the drill and the material being drilled:
A) The margin or outer corners are broken down
B) Chips become jammed in the flutes
C) More feed is required to get the drill to cut thus breaking the drill
D) The cutting edges become dulled
29) When using a sensitive drill press, you can tell if the feed is approximately right in soft steel,
if the:
A) Chip is in short segments
B) Chips come out blue or violet in color
C) Chips come out long and stringy
D) Chip is a tightly rolled helix
30) Coolants may be divided into two groups, the mineral and animal oils and the:
A) Water soluble oils
B) Air coolants
C) Lubricants
D) Refrigerants
31) Which cutting fluid would be be best for reaming or tapping low carbon steel?
A) Soluble oil
B) Sulfurized oil
C) Lubricating oil
D) Kerosene
32) Jamming of drills, when drilling deep holes, can be avoided by using a procedure called:
A) Pecking
B) Withdrawal
C) Chipping
D) Alternating
33) The depth stop on a drill press is used for:
A) Detecting when the drill has stopped cutting and then shutting off the machine
B) Alerting the operator by ringing a bell when the drilling tool is approaching the depth where it
should stop
C) Keeping the quill from falling out by stopping it at full depth
D) Limiting its stroke and thus preventing the drill from drilling into the table
34) Work holding devices are used on drilling machines because:
A) They help to reduce worker fatigue that results from holding the workpiece by hand
B) They keep the workpiece from turning with the drill and they provide a rigid setup that is safe
C) They always automatically position the place to be drilled directly under the spindle and then
guide the drill
D) All of the above
35) Which of the following are all workholding devices?
A) Strap clamps, vises, v blocks, and angle plates
B) Jigs and fixtures, vises, angle plates, v-blocks, wigglers and C-clamps
C) Strap clamps, C-clamps, v blocks, angle plates and drill chucks
D) Vises, v blocks, wigglers, strap clamps and C-clamps
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36) Parallels are used for:
A) Heavy, rough drilling
B) Scribing a parallel line along a shaft
C) Spacing workpieces off the drill press table or vise
D) Aligning a center punch mark on round stock in vee-blocks
37) Angle drilling is done by:
A) An angular workpiece
B) A tilting type table or angular vise
C) Angle iron
D) An angle drill press
38) V blocks are mostly used on the drill press for:
A) A substitute step block
B) Quick drilling jobs without the need for clamps or other hold downs
C) Holding round stock for cross drilling
D) Holding round stock in a vertical position to drill deep holes lengthwise of the material
39) A wiggler is a:
A) Device like a fishing lure that indicates approximate RPM of the drill
B) Spring loaded, scribe like indicator that can be trued to center by pushing on a ball near its
point
C) Shop term for a workpiece without clamps that has caught in a drill and is spinning around
D) Hold down device that allows the workpiece to “wiggle” until it is centered under the drill
spindle
40) An angular, odd shaped workpiece cannot be mounted satisfactorily on the drill table or in a
vise. It has one machined surface and the hole to be drilled must be parallel to it. How can this
work be set up?
A) There is no way to clamp it, so you would have to hold it with your hands
B) A special fixture would have to be made
C) It can be clamped to an angle plate
D) It can be clamped in v blocks
41) It is sometimes a good idea to start a tap with a drill press since:
A) You can put a lot of force on the tap with the drill press feed handle
B) If you get tired turning the tap by hand, you can always turn on the machine
C) Taps are prone to go in crooked when started by hand
D) All of the above
42) Jigs and fixtures are primarily used in:
A) Small machine shops
B) School shops
C) Maintenance type machine shops
D) Production manufacturing operations
43) To chamfer a hole, use a:
A) Countersink
B) Reamer
C) Chamfer file
D) Counterbore
44) To provide a tapered hole for a flat head screw, use a:
A) Taper reamer
B) Countersink
C) Center drill
D) Counterbore
45) A counterbore is used to:
A) Make center holes in shafts
B) Make seats for flat head screws
C) Enlarge holes to recess a bolt head
D) All of the above
46) Spotfacing is done with a:
A) Spotfacer
B) Counterbore
C) Spotting drill
D) Countersink
47) Which inch size pilot should be used in a .500-inch diameter hole?
A) .502
B) .498
C) .505
D) .480
48) The cutting speed used with a counterbore when compared with an equal size twist drill is:
A) The same
B) One-third more
C) One-third less
D) None of the above
49) The included angle of a center drill is ________ degrees.
A) 30
B) 120
C) 60
D) 90
50) Before starting to counterbore a hole:
A) Lubricate the drill press spindle
B) Lubricate the pilot
C) Reduce the feed by one-third
D) All of the above
51) The most important factor when counterboring is:
A) The kind of coolant used
B) The feed rate
C) Cutting speed
D) To fasten the work securely
52) Reaming stock allowance in inches for machine reaming a one-half inch diameter hole
should be?
A) .015
B) .025
C) .035
D) .005
53) Compared with the speed for drilling the same material, the speed for reaming is ________
that for drilling.
A) Equal
B) One-fourth
C) One-half
D) Higher than
54) Compared with the feed rate for drilling the same material, the feed rate for reaming is
________ that for drilling.
A) One-half
B) 4 times
C) Equal
D) 2 times
55) A high-quality surface finish is obtained by:
A) Using a polishing reamer
B) Using an appropriate feed rate
C) Rotating the reamer in reverse
D) Using a high cutting speed
56) A bell-mouthed hole is caused by:
A) A slightly tapered reamer
B) A worn reamer
C) A misaligned reamer
D) An oversized reamer
57) An oversized hole is caused by:
A) A built up edge
B) The wrong coolant
C) A bent reamer
D) All of the above
58) Too low a feed may “glaze” the hole, which has the result of work hardening the material.
59) Coolant is used while reaming to:
A) Cool the tool
B) Improve surface finish
C) Wash away chips
D) All of the above
60) To eliminate chatter while reaming:
A) Increase speed
B) Increase feed
C) Decrease feed
D) None of the above
61) A poor-quality surface finish is caused by:
A) Too high a cutting speed
B) Too small a reaming allowance
C) Too high a feed rate
D) All of the above