Page 176 - CITS - ED - Mechanical

ENGINEERING DRAWING - CITS

Fig 1

Fig 2 Fig 3

Fig 4 shows three types of taper pins.

Fig 4

Designation: Taper pin shall be designated by name, type A.B or C, nominal dia, nominal length and BIS number.
Taper pin A 16 x 90 IS:6688
Taper pin B 20 x 60 IS:6688

Split taper pin C 5 x 40 IS:6688
General proportion: normal dia of pin = 1/6 (dia of shaft).
Cotter/cotter joint: Cotter is a rectangular wedge with taper on one side of the width, thickness being same. It is
used to connect shafts, with reciprocating motion only. The ends of the shafts to be joined are formed into socket
and spigot. A rectangular slot at right angle to the axis is made with taper on one side to suit the cotter. The socket
and spigot are aligned and the cotter is driven in locking them together. (Figs 5 & 6)

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CITS :Engineering Drawing (Mechanical) - Exercise 8 CITS :Engineering Drawing (Mechanical) - Exercise 8