ENGR1025 - Tutorial 1

Course Overview

  • Course Title: ENGR 1025U - Engineering Design
  • Tutorial Focus: Multi-view Drawings and Identifying Features on 3D Models

Free Hand Sketching

  • Practice Task: Copy images using free-hand sketching.
    • Pay attention to scale (Half size, Full size, Quarter size).

Orthographic Projection

  • Definition: A technique to graphically represent 3-D objects on 2-D media (paper, computer screen).
  • Key Variables:
    • Line of Sight: The direction in which the object is viewed.
    • Plane of Projection: The surface onto which the projection is made (image plane or picture plane).
Surfaces in Orthographic Projections
  • Normal Edge: Appears as a point on the projection plane (perpendicular to the projection plane).
  • Inclined Edge: Appears as a true length on the plane parallel to it; can be foreshortened on adjacent planes.
  • True Size Appearance: Only when projected onto a parallel projection plane.

Creating Engineering Drawings

  • Projection Requirements: Typically, three views are necessary depending on the complexity of the part.

ASME Standard Line Types

  • Feature Representation:
    • Visible Line: Thick continuous line.
    • Hidden Line: Thin dashed.
    • Center Line: Thin with a dash in the center.
  • Line Thickness: 0.3 mm (thin), 0.6 mm (thick).

Multiview Projections

  • View Types:
    • Top View
    • Front View
    • Right View
    • Also incorporate isometric views for better understanding.

Design Project 1 (DP1) Overview

  • Project Title: Design a manual juicing machine.
  • Design Criteria:
    • Hand-operated and adaptable for electric drill use.
    • Easy assembly and disassembly for cleaning purposes.
    • Cost-effective and compact design.
    • User-friendly considering various age groups and strengths.

Marking Criteria for DP1

  • Group Formation: Group activities evaluated during tutorials. Individual contributions affect final grading.
  • Project Ranking: Based on effectiveness and participation.
Marking Breakdown
  • DP1 Task 1: Generate multiple concept sketches (Maximum marks: 1%).
  • DP1 Task 2: Establish selection criteria for design ranking (Maximum marks: 1%).
  • DP1 Task 3: Develop detailed designs using Solidworks (Maximum marks: 6%).
  • DP1 Task 4: Produce product brochure and manuals (Maximum marks: 1%).
  • DP1 Task 5: Use project management tools for documentation (Maximum marks: 1%).

Individual Task Marking Rubric

  • Each task has criteria based on:
    • Engineering problem framing.
    • Quality of design concepts.
    • Individual contributions and collaboration.
    • Use of tools and adherence to standards.