lecture 2
TRANSCRIPT
8/9/2011
1
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Types of motion:
(a) translational,
(b) rotational
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Joints with:
(a) One degree,
(b) Two degrees of freedom
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Links:
(a) with two nodes, (b) with three nodes,
(c) with four nodes
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Simple engine mechanism
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Examples of four-bar chains
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8/9/2011
2
Cine film advance mechanism
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Toggle linkage
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Quick-return mechanism
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Cam and cam follower
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Cams:
(a) Eccentric,
(b) Heart-
shaped,
(c) Pear-
shaped
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Cam followers:
(a) point, (b) knife, (c)roller, (d) Sliding and
oscillating, (e) Flat, (f) Mushroom.
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8/9/2011
3
(a) Parallel gear axes,
(b) Axes inclined to one another.
(c) Axial teeth,
(d) Helical teeth,
(e) Double helical teeth
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Two meshed gears
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Simple gear train
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Compound gear trains
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Rack-and-pinion
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Ratchet and pawl
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8/9/2011
4
Belt drive
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Reversed belt drives:
(a) crossed belt,
(b) (b) open belt
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Types of belts
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Plain journal bearing
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Hydrodynamic journal bearing
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Basic elements of a ball bearing
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8/9/2011
5
Types of ball bearings:
a) Deep-Groove
b) Filling-Slot
c) Angular Contact
d) Double-Row
e) Self-Aligning
f) Thrust, Grooved race
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Roller bearings:
a) Straight Roller
b) Taper Roller
c) Needle Roller
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