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Machine Tool Practices, 11e (Kibbe)
Section K – Horizontal Spindle Milling Machines
1) The saddle moves when operating the:
A) Length feed
B) Cross feed
C) Vertical feed
D) None of the above
2) The front end of a milling machine spindle:
A) Has a vertical fine adjustment
B) Is flexible
C) Is the spindle nose
D) Is the arbor support
3) Fast table movements are obtained by using the:
A) Hand wheel
B) Power feed
C) Instant locator
D) Rapid traverse
4) The spindle rotation is reversed:
A) At slow spindle speeds
B) After the machine stops
C) At the end of each cut
D) During light cuts
5) Spindle speeds are changed with the spindle motor running:
A) On a variable speed drive
B) On a geared head drive
C) To make shifting easier
D) On a small milling machine
6) The purpose of the overarm is:
A) To hold the arbor support
B) To hold large face mills
C) Strengthen the column
D) Extend the spindle
7) Trip dogs:
A) Engage power feeds
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B) Extend the table travel
C) Disengage power feeds
D) All of the above
8) A small chip between the collars on a mill arbor will:
A) Make the arbor harder to drive
B) Both C and D
C) Damage the cutter hub and collar faces
D) Cause cutter axial runout
9) Most milling machines have self-releasing tapers in their spindle sockets.
10) Mill arbors that are supported by the overarm bearings are:
A) Types A and B
B) Only Type C arbors
C) Shell arbors
D) Very long arbors
11) The overarm support should be:
A) Loose on the arbor
B) Tight on the arbor
C) As far from the cutter as possible
D) As close to the cutter, as possible
12) The arbor support bearing must be:
A) Checked for alignment with the machine running
B) Lubricated every 5 minutes with an oil can
C) Be used only with extra-long arbors
D) Adjusted carefully to guarantee accurate running of the cutter
13) High speed operation may require that the arbor support bearing:
A) Be run loose to prevent overheating
B) Be adjusted with less clearance
C) Be adjusted with more clearance
D) Be greased with moly-based lubricant
14) The arbor is driven by:
A) The friction between the tapers
B) The pull of the drawn-in bar
C) The keys in the spindle nose
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D) All of the above
15) Plain milling cutters are used to produce:
A) Flat surfaces at right angles to the cutter axis
B) Surfaces with an irregular outline
C) Flat surfaces at any angle to the cutter axis
D) Flat surfaces parallel to the cutter axis
16) Light duty plain milling cutters:
A) Have coarse teeth
B) Are used to mill small steps
C) Are used to machine light workpieces
D) Have many teeth
17) Contoured surfaces are machined with:
A) Helical plain milling cutters
B) Contour saws
C) Stagger tooth cutters
D) Form relieved cutters
18) Helical milling cutters:
A) Cannot be re-sharpened
B) Chatter easily
C) Have a smooth cutting action
D) Leave rough surfaces
19) Heavy duty plain milling cutters:
A) Chatter easily
B) Have many teeth
C) Are used to machine heavy workpieces
D) Have coarse teeth
20) Stagger tooth side cutting mills:
A) Have large chip spaces
B) Are used to mill deep grooves
C) Are also called slab mills
D) Are used to mill shallow grooves
21) Angular milling cutters are used:
A) To chamfer workpieces
B) To mill vee-notches
C) To mill dovetails
D) All of the above
22) Metal slitting saws are used to:
A) Cut off materials
B) Mill flat surfaces
C) Mill dovetails
D) All of the above
23) Half side milling cutters are used to:
A) Mill deep grooves
B) Straddle mill
C) Mill shallow grooves
D) None of the above
24) When a workpiece is fastened to the table with a clamp and bolt:
A) The bolt should be as close to the workpiece as possible
B) The clamp should be as long as possible
C) The bolt should be as far from the workpiece as possible
D) None of the above
25) A finished surface can be protected from clamping marks by:
A) A strip of paper
B) A piece of metal
C) A thin piece of aluminum
D) All of the above
26) A stop block:
A) Is used instead of a screw jack
B) Limits table travel
C) Prevents work movement
D) Is used to raise a workpiece
27) A rough casting can be securely held for machining:
A) By clamping it to the table
B) In a fixture
C) In an all-steel vise
D) All of the above
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28) T-slots in a machine table:
A) Can be used to align workpieces
B) Are used in conjunction with tee-nuts and clamp studs for work holding directly to the table
C) Are parallel to the table slides
D) All of the above
29) Before placing rough castings on a machine table:
A) Align the screw jacks on the table
B) Mount the cutter in the machine
C) Place a shim on the table
D) All of the above
30) Clamping a workpiece on an unsupported section:
A) May distort the workpiece
B) May bend the workpiece
C) May break the workpiece
D) All of the above
30) A workpiece should be secured in a vise by:
A) Tightening the crank by hand
B) Tightening the screw jack
C) Striking the crank with a machinist’s hammer
D) Striking the base of the crank handle with a lead hammer
31) Half side milling cutters are:
A) Used to cut deep grooves
B) Use to straddle mill
C) Used to cut shallow grooves
D) All of the above
32) In straddle milling, the width of the workpiece is controlled by the:
A) Depth of cut
B) Width of the interlocking side mills
C) Diameter of the half side milling cutters
D) Width of the spacers
33) The width of a groove made by a cutter of a given width:
A) Is often wider than the cutter
B) Slightly narrower than the cutter
C) Is always exactly the same as the cutter width
D) Depends on the diameter of the cutter
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Answer: A
34) Layout lines on a workpiece:
A) Should be accurate
B) Identify where machining is to take place
C) Help in preventing machining errors
D) All of the above
35) Accurate cutter positioning on a workpiece is accomplished by:
A) Using a precision square
B) Holding the workpiece in a vise
C) Using the machine dials
D) Locating the cutter with an accurate steel rule