Communicating Technical Details
- Communicating the technical details of a product is essential for its successful manufacture.
- This involves creating detailed drawings that convey dimensions, scale, and assembly details.
The Importance of Technical Drawings
- Clear Communication: Show exactly what needs to be made
- Standardised Format: Follow global conventions for consistent interpretation
- Permanent Record: Useful for future updates, inspection, or reference
Key Elements of Technical Drawings
- Dimensions: Precise measurements (e.g. height, width, depth, hole diameters)
- Scale: The ratio between the drawing size and the actual product (e.g. 1:1, 1:2)
- Assembly Details: How parts connect or fit together
- Tolerances: Permitted variation in dimensions (e.g. ±0.2 mm)
- Materials and Finishes: Indicate surface treatments, textures, or materials
Types of Technical Drawings
| Drawing Type | Purpose |
|---|---|
| Orthographic | Shows multiple 2D views (top, front, side) with dimensions |
| Exploded View | Shows all parts separated but aligned to show assembly |
| Section View | Reveals hidden internal features by cutting through the object |
| Detail Drawing | Focuses on a specific area at larger scale (e.g. joints, threads) |
Note
For presenting and interpreting these drawing types in a broader design context, see Section 2.2.1.
Tools for Creating Technical Drawings
1 - Computer-Aided Design (CAD) Software
- Tools like AutoCAD, SolidWorks, and Fusion 360 enable precise and scalable drawings.
- Allow for easy modifications and 3D modeling.
2 - Manual Drafting
- While less common today, manual drafting with tools like T-squares and compasses is still valuable for conceptual sketches.
Note
CAD software often includes features for simulatingassembly processes, helping designers identify potential issues before manufacturing.
Common Mistake
Students often create drawings that look good visually but lack essential details like exact dimensions, tolerances, or part labels. Manufacturing requires precision, not just presentation.
