White Table Tops

Technology Term 2 –Technical Drawings –Locker Shelf Diagrams Design Plan and Technical Diagram

Super Clothes Peg

Workbook pp. 189 Textbook pp. 355 DEFINITIONS

A Diagram Is… A simplified representation of an object, a part of an object or a system

A Design Plan Is… A drawing that represents one or more aspects of the functioning of an object.

A Technical Diagram… contains information about the construction solutions for manufacturing an object or a system.

Symbols Used In Diagrams

ConstraintsCompression Tension Shearing

Compression

Tension

Shearing

MovementUnidirectional Bidirectional Unidirectional Rotation Bidirectional Helical Motion

Bidirectional

Bidirectional Helical

PartsScrew / bolt Nut

Screw / Bolt

GuidesTranslational Guide Rotational Guide

Translational Guide

Rotational Guide

Common Rules for Drawing Schematic Diagrams p. 190

Lines The lines must be clean and clear.

Colour Different colours are used to represent different parts.

Representation Different perspectives may be used, details, enlarged, or sections displayed to best show the object or provide information.

Proportions of parts The measurements of the parts do not need to be exact or to scale, but all proportions must be respected.

Dimensions Dimensioning is not required.

Information Contained in Design Plans

1.appropriate symbols 2.names of parts 3.symbols of motion and forces 4.Any other useful information

Information Contained In Technical Diagrams

1.The shapes 2.The names and quantities of the parts 3.The materials to be used 4.The linking components 5.The types of guides 6.Any other helpful information

Homework pp

Symbols ID Competition 1. Table vs. Table 2. Pen / Paper / p # Match Symbols with picture

Example

Symbols for Constraints

Symbols for Movement

Symbols for Guides

Parts: Draw the symbol

Answers Check your answers Correct answer with RED pen

Symbols for Constraints

SHEARING

TENSION

SHEARING

COMPRESSION

Symbols for Movement

ROTATIONAL

HELICAL

TRANSLATIONAL

HELICAL

Symbols for Guides

ROTATIONAL

TRANSLATIONAL

Parts: Draw the Symbol

TOTAL /11

Design Plan and Technical Diagram of a Paper Punch

3. How does the Technical object work? Punch Blade Fulcrum Lower & Upper Level Spring Paper Guide Chad Reservoir

8. Complete the design plan for the paper punch.

The points where force must be exerted –Compression, Tension or Shearing The motion of the paper punch levers –Unidirectional, Bidirectional, Rotational or Helical Names of the various parts illustrated –Question 3

Order of Operations 1.Design Plan and Technical Diagram of a Paper Punch 2.Design / Technical Diagram 3.Super Clothes Peg Build