252 Machine Drawing
dharm
d:\N-Design\Des17-1.pm5
7. What is the purpose of the threaded hole marked ‘X’?
— For adjusting the tool height, by means of a screw
8. Explain the note—4 HOLES, M10.
—There are three tapped holes in the body to clamp the tool in position by screws
and the fourth tapped hole is at the bottom of the base. The size of the tap is 10mm.
16
6
50 8
20
2 HOLES, M6 (^2662)
R6
X 8
8
16
(^1612)
2 HOLES, M 10
DEEP 16
DIA 10 C BORE,
DEEP 8
¢
70
32
22
f 14
8
6
42 f^25
41
82
102
10
4 HOLES,
M10
70
Fig. 17.1 Rear tool post
17.2.2 Pump Housing
The view from the front and the view from above of a pump housing is shown in Fig. 17.2. Read
the drawing and answer the following :
1. What is the overall size of the housing?
—178mm × 152mm × 102mm
2. What is the gasket size required for the top surface?
—134mm × 95mm
3. There are 4 tapped holes on the top. What is the size of the tap?
—M6
4. Specify the location of the holes on the front face.
—2 HOLES, M10 DEEP 25 AT 120 PCD
5. Explain the note—4 HOLES, M10 DEEP 25.
—There are two holes in the front and two more holes similarly placed at the back,
each having a thread of nominal diameter of 10mm and depth of 25mm.
