1. A jig holds and positions the workpiece, but a fixture also guides the tool.
ID: 1850269 • Letter: 1
Question
1. A jig holds and positions the workpiece, but a fixture also guides the tool.True False
2. Cutting forces should usually be directed toward the primary location plane, if possible.
True False
3. The purpose of a welding fixture is to hold the items to be welded so that machining operations can be easily
performed.
True False
4.A scroll chuck is better than a power chuck for large volume production runs.
True False
5. Match each type of jig listed on the left with the best-related description on the right.
44. _____ box jig A. uses a hinged side to permit easier loading/unloading of
irregular shaped workpieces
45. _____ tumble jig B. a very basic style of jig, with a bottom plate, one or more sides,
and a top bushing plate
46. _____ leaf jig C. the bushing plate is lowered down to clamp the part, providing
for quicker loading/clamping/unloading
47. _____ plate jig D. in addition to the top bushing plate, one or more sides of the
jig is also used as a bushing plate
48. _____ pump jig E. consists of a single bushing plate with legs. The part is
clamped to the plate, then turned over on to the jig legs for
drilling, etc.
6. A detailed set of instructions showing the part as it appears after a specific operation, with dimensions and
tolerances, required tooling and gages, and specific locating and clamping points is called a(n):
(a) detail drawing
(b) tool drawing
(c) routing sheet
(d) operation sheet
7. Whenever possible, clamping pressures should usually be directed toward:
(a) the pressures generated by the cutting tool
(b) the tertiary location plane
(c) the secondary location plane
(d) the primary location plane
8. With respect to the principles we covered in chapter 4, clamps should:
(a) not make loading difficult
(b) interfere with the use of hoists
(c) pinch your fingers
(d) snag your shirt
Explanation / Answer
T T F T F F F T
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