Question 5
Fig. 3 shows the parts of a lathe machine tool post. To assemble the parts, the T-bolt slides into the slot of the slider. The tool post is held in position central to the slider by the T-bolt. The assembly is secured by the nuts and washers with the two set screws in position.
Draw, full size and in first angle orthographic projection, the
(a) section front elevation of the assembly on cutting plane P-P;
(b) end elevation of the assembly to the right of views specified in 5(a);
(c) plan of the assembly.
(Hidden details not necessary)
Observation
Most of the candidates avoided this question. It believed, therefore, that the question is considered tougher than the one given under Building Design.
The requirements for the question are given below.
THE REQUIRED ECHANICAL (ASSEMBLY) DRAWING
MAJOR REQUIREMENTS FOR CONSTRUCTING THE SECTIONAL FRONT ELEVATION OF THE ASSEMBLE ON PLANE P-P
- Drawing in first angle projection
- Drawing full size
- Drawing the outline
- Drawing 2-centre lines
- Drawing the tee bolt
- Drawing the slider
- Drawing the tool post
- Drawing the set screw
- Drawing washer & nut
- Sectioning correctly
- Writing sectional front elevation
- Neatness and quality of lines
MAJOR REQUIREMENTS FOR CONSTRUCTING THE END ELEVATION OF THE ASSEMBLY
- Drawing in first angle projection
- Drawing full size
- Drawing the outline
- Drawing 3-centre lines
- Drawing the tee bolt
- Drawing the slider
- Drawing the 2 set screws
- Drawing the washer & nut
- Drawing the tool post
- Writing end elevation
- Neatness and quality of lines
MAJOR REQUIREMENTS FOR CONSTRUCTING THE PLAN OF THE ASSEMBLY
- Drawing in first angle projection
- Drawing full size
- Drawing 7-centre lines
- Drawing the tee bolt head
- Drawing the slider
- Drawing outline
- Drawing the cutting plane P-P
- Drawing the set screws
- Drawing the washer & nut
- Writing “Plan”