DRAUGHTSMAN MECHANICAL Learning Outcome
The Draughtsman Mechanical trade under the Craftsmen Training Scheme (CTS) is designed to develop technical competencies required for preparing mechanical engineering drawings and supporting manufacturing and production activities. Learning outcomes represent the specific knowledge, skills, and abilities that trainees are expected to achieve during the two-year training program. These outcomes ensure that trainees are capable of performing drafting tasks accurately using both manual drawing instruments and modern computer-aided design (CAD) software. :contentReference[oaicite:1]{index=1}
The learning outcomes are structured across two training years and cover fundamental engineering drawing principles, mechanical component drafting, CAD-based design, and production drawing preparation. By achieving these learning outcomes, trainees become competent mechanical draughtsmen capable of working in manufacturing industries, engineering design offices, and mechanical workshops.
First Year Learning Outcomes
The first year of training focuses on developing basic drafting skills, engineering drawing knowledge, and familiarity with mechanical components and allied trades. The learning outcomes during this stage emphasize manual drafting techniques and the understanding of engineering drawing standards.
Construction of Geometrical Figures
Trainees learn to construct various geometrical figures using drawing instruments while following safety precautions. This includes drawing lines, polygons, circles, curves, and other geometrical shapes used in engineering drawings. Mastering these basic shapes helps trainees develop accuracy and precision in technical drawing.
Orthographic Projection Drawing
Another key learning outcome is the ability to prepare orthographic projections of objects. Trainees learn to represent three-dimensional objects in two-dimensional views such as front view, top view, and side view. They also learn proper dimensioning techniques, title block preparation, and the use of appropriate line types and drawing scales.
Freehand Sketching of Machine Parts
Trainees develop the ability to prepare freehand sketches of simple machine components such as bolts, nuts, brackets, tool posts, and other mechanical parts. These sketches are drawn with correct proportions and dimensions, which helps trainees understand the structure and function of machine elements.
Construction of Different Types of Scales
Students learn to construct various engineering scales including plain scales, comparative scales, diagonal scales, and vernier scales. These scales are essential for converting real-world dimensions into scaled representations used in engineering drawings.
Sectional Views in Engineering Drawing
Trainees acquire the ability to prepare sectional views of objects in orthographic projection. Sectional drawings are used to show internal details of mechanical components that cannot be clearly represented in external views.
Development and Interpenetration of Solids
Another important learning outcome is the ability to develop surfaces of geometrical solids and represent the interpenetration of solids in orthographic projection. These techniques are useful for designing sheet metal components and understanding complex mechanical shapes.
Isometric and Oblique Projections
Trainees learn to convert orthographic views into isometric projections and vice versa. They also learn to draw oblique projections from orthographic views. These drawing techniques help visualize mechanical components in three-dimensional form.
Drawing of Fasteners and Locking Devices
Students learn to draw different types of fasteners such as bolts, nuts, studs, screws, and washers according to engineering standards. They also learn to represent welds, locking devices, and other mechanical elements using conventional symbols.
Knowledge of Allied Trades
The course also introduces trainees to tools and equipment used in allied engineering trades such as fitter, turner, machinist, sheet metal worker, welder, foundryman, electrician, and motor vehicle maintenance. This knowledge helps trainees understand how mechanical components are manufactured and assembled in industrial workshops.
Drawing of Gears, Couplings, and Bearings
Trainees learn to construct drawings of different types of gears, couplings, and bearings while indicating tolerance dimensions and surface finish symbols. Understanding these components is essential for mechanical design and machine construction.
Computer Applications and CAD Basics
Another learning outcome in the first year is gaining basic knowledge of computer applications and creating two-dimensional objects in CAD drawing space using commands from toolbars, menus, and command prompts.
Second Year Learning Outcomes
The second year focuses on advanced drafting techniques and the use of computer-aided design software for preparing complex mechanical drawings.
CAD-Based Projection Drawing
Trainees learn to construct projection views of geometrical figures in CAD model space and layout space. They also apply dimensioning and annotation techniques to create professional technical drawings.
Detail and Assembly Drawing of Machine Parts
Students develop the ability to prepare detailed and assembly drawings of mechanical components such as pulleys, pipe fittings, gears, and cams. These drawings are prepared using CAD software and include necessary dimensions, annotations, and specifications.
Drawing of Engine Components
Trainees learn to prepare detailed drawings of engine parts such as pistons, connecting rods, cross heads, and other components used in internal combustion engines. These drawings help trainees understand mechanical systems used in industrial machinery.
3D Modeling and CAD Visualization
Another major learning outcome is the ability to create three-dimensional solid models using CAD software. Trainees learn to generate views from 3D models, preview drawings, and plot drawings for printing.
Detailed and Assembly Drawing Using CAD
Students learn to prepare detailed and assembly drawings of mechanical devices using conventional signs and symbols in CAD software. These drawings include dimensions, annotations, title blocks, and bill of materials.
Preparation of Drawings from Measurements
Trainees develop the ability to prepare drawings of machine parts by measuring components using gauges and measuring instruments. This skill is important for reverse engineering and maintenance work in industries.
Machine Shop Layout Drawing
Students also learn to prepare machine shop layout drawings considering process flow and ergonomic factors. These layouts help in designing efficient manufacturing facilities.
Production Drawing Preparation
Another advanced learning outcome is the ability to create production drawings of machine components using CAD software. These drawings are used directly in manufacturing processes and contain detailed information about dimensions, tolerances, and materials.
Application of Mathematics and Science
Trainees also demonstrate basic mathematical and scientific concepts related to mechanical drafting. They learn to apply calculations and scientific principles while performing drafting tasks and engineering operations.
Conclusion
The learning outcomes of the Draughtsman Mechanical trade ensure that trainees develop a comprehensive set of competencies required in modern engineering industries. From manual drafting techniques to advanced CAD and 3D modeling skills, the course prepares trainees to handle a wide range of mechanical drawing tasks.
By achieving these learning outcomes, trainees become capable of preparing accurate engineering drawings, supporting mechanical design processes, and contributing effectively to manufacturing and production activities in industrial environments.