Machine Drawing

Assembly Drawings 287

dharm
d:\N-Design\Des18-2.pm5

Figure 18.16 shows the details of a clapper block. This consists of a swivel plate 1, attached

to the vertical slide of the tool head (Fig. 18.17) of the shaping machine. The drag release plate 2

relieves the tool during the return stroke. The drag release plate carries the tool holder 4 and the

tool is fixed in it by means of the tool clamping screw 5. The washer 6 is used over the drag release

plate for providing even bearing surface to the tool.

70

R108

141

16 65 16

R108^84

76

31

16

15 15

13

f 13

f^30

f^21126

18

30 45

f^42 R9

12 69 24

M14

f^24 f^30

4

f

30

f^60

6

M14

20

6 50 25

5

100

f^13

3

15 15

13

f 13

84

f^421218 f^30

42

R108

63

2

Part No. Name Matl Qty

1 2 3 4 5 6

Swivel plate

Drag release plate

Pin

Tool holder

Tool clamping screw

Washer

Cl

Cl

MS

MCS

MS

MS

1 1 1 1 1 1

Parts list

1

9

Fig. 18.16 Clapper block

Exercise

Figure 18.16 shows the details of a shaper clapper block. Assemble the parts and draw, (i) the

view from the front and (ii) sectional view from the left.

18.3.4 Shaper Tool Head Slide

The shaper tool is fixed to the tool head through a tool holder and a clapper block. Figure 18.17

shows the details of a shaper tool head slide. The back plate 2 is attached to the front face of the