Question

Fig. 1 shows the details of the parts of a TURN-BUCKLE. Assemble all these parts correctly and then draw to scale 1 : 1 its following views. Keep 54 mm threaded portion of each rod inside the body of turn-buckle.
(i) Front view upper half in section
(ii) Right side view

Hint:

Always indicate thread directions (RH/LH), and show hidden lines only where necessary. Follow projection conventions and label your views clearly.

Answer 1

To answer this question, we need to construct a proper engineering drawing of the assembled turn-buckle using the provided part views.
Assembly Details:
- The turn-buckle consists of three parts: Rod A, Rod B, and the Central Body.
- Each rod (A and B) has a threaded portion (external thread $\phi$ 22) that will be screwed inside the central body.
- The left side of the body uses LH (Left-Hand) threads; the right side uses RH (Right-Hand) threads.
- We must insert 54 mm of the threaded portion into the central body, as instructed.
Scale and Views:
- Use a drawing scale of 1:1.
- The front view (upper half) must be drawn in section, showing the internal threaded engagement.
- The right-side view should be a full external view showing the external profiles of the rods and body.
Drawing Title:
TURN-BUCKLE ASSEMBLY (Scale: 1:1)
Projection Symbol:
Use the symbol of first angle projection (or third angle if specified in exam).
6 Important Dimensions (must be included in drawing):
1. Overall length of turn-buckle (including both rods) = 160 mm + visible rod parts
2. Length of central body = 160 mm
3. Length of each rod = 64 mm
4. Threaded engagement length (inside body) = 54 mm (each rod)
5. Diameter of rods = $\phi$ 22 mm
6. Hex section width across flats or key features like chamfer angle
Guidelines for Drawing:
- Sectional front view: show internal threads using dashed lines and remove upper half hatching from external rods.
- Right side view: show the external cylindrical and conical parts.
- Dimension properly using arrows and notations as per BIS standards.
Note: While the figure provided is not to scale, all given measurements (in mm) must be strictly followed.