326 Machine Drawing
dharm
d:\N-Design\Des18-3.pm5
KEY WAY,
10×4
12
f 30
f
60
1
30 20
10
f^100
f 100
12 2
12
10
KEY WAY,
10×4
(^3) f^3050
10
10
4
Sl. No. Name Matl. Qty.
1
2
3
4
Flange
Disc
Shaft
Key
MS
MS
MS
MS
2
1
2
2
Parts list
Fig. 18.43 Oldham coupling
The two flanges 1 are mounted on the ends of shafts 3 by means of sunk keys 4. The flanges
are having rectangular slots in them. These flanges are set such that, the slots in them are at
right angle to each other. The circular disc 2 is now positioned in-between them so that the
projections in the circular disc, enter into the corresponding slots of the flanges. During rotation
of the shafts, the central disc slides in the slots of the flanges. Figure 7.12b shows the assembly
drawing.
Exercise
Assemble the parts of the Oldham coupling shown in Fig. 18.43 and draw, (i) sectional view from
the front and (ii) view from the left.
18.5.6 Universal Coupling
This is a rigid coupling and is used to connect two shafts, whose axes intersect if extended.
