Machine Drawing

Assembly Drawings 285

dharm d:\N-Design\Des18-1.pm5

tool can be indexed readily by rotating the tool holder on the base plate and located in the correct

position by the spring 9 and the ball 10. The ball is seated in the V-groove, provided for this

purpose in the base plate.

M22

f 50

f (^6210)

110150

30

66

1

f 32

f 36

22

96

615

f 28

U/C 5×2

8

f 18 M22 5

15

R3

14

2

f 63

10

76

f 51

R143^120

16

SERRATIONS 4

18

R143f^100

f 51

12

3

No. Name Matl Qty 1 2 3 4 5

Piller Block Ring Wedge Screw

MCS

MS

MCS

TS

1

Parts list

Fig. 18.14 Single tool post

Exercise

The details of a lathe square tool post are shown in Fig. 18.15. Assemble the parts and draw,

(i) sectional view from the front and (ii) view from above.

18.3.3 Clapper Block

It is a sub-assembly of the tool head of a shaping machine. It is used for holding the shaper

cutting tool. The design of the clapper block is such that it relieves the tool during the return

stroke.