Tuesday, January 3 2016 Mr. Fuggi – Intro to Tech. Ed. Happy New Year! Tuesday, January 3 2016 Mr. Fuggi – Intro to Tech. Ed.

What is CAD(D)? Computer Aided Drafting and Design Drafting  An technical drawing that clearly specifies all dimensions of an item to be engineered

Why is CAD(D) relevant? It is the industry standard way that products and goods are designed in the modern world It is how engineers and designers turn two-dimensional drawings into three-dimensional models Many of the manufacturing tools and machines used today are able to understand 3-D code in order to create a product or good

The Process: Most all products start out with some sort of drawing (hand drawn) Revisions are made until the designer(s) are happy with the design The design is then translated into a “multi-view drawing” Multi-View Drawings = Technical Drawing with dimensions The technical drawing is then created in 3-D space by the CAD(D) engineer The product is then made by a manufacturing process Machined (Mill, Water Jet, Lathe, CNC Cutter) 3D Printed

Understanding Technical Drawings: Why is this important? So you know how to design a specified product What are two things that every product has? Size and shape

Understanding Technical Drawings: What is the width of the iPod? What is the height of the iPod? What is the height of the screen? What is the diameter of the touch-wheel? Single View Drawing – a detailed illustration of a drawing from one view

Understanding Technical Drawings: Imagine that the object is in a clear box and the views are from each side of the box

Understanding Technical Drawings: What is the height of this object? What is the width of this object? What is the radius of the hole? Orthographic Drawing – Drawing that includes multiple sides of an object

CAD(D) Vocabulary: Sketch Dimension Extrude Hidden Line Isometric View Pan Orbit Fillet Chamfer View/Perspective Cube

Sketch Sketching is when you are creating a 2-dimensional shape on a plane Plane – X,Y or Z axes Once a sketch is completed, it can then be manipulated

Dimension When sketches are drawn, the user must specify the size of the figure they are drawing Length, Width, Height, Depth

Extrude The function that allows a 2-dimensional sketch to become 3- dimensional The user specifies this dimension

Hidden Line A hidden line is a dashed line shown in a technical drawing that indicates that there is a line behind or inside the face that is shown It shows hidden features not visible to the eye from the current view

Isometric View The view that visually represents three-dimensional objects from a 2- dimensional view, it shows all three axes from one view (X,Y and Z) In 123D Design and most all CAD(D) programs, this is known as the home view

Pan Panning is when you are changing your position on the vertical or horizontal axis without changing your view perspective on an object You would most likely use this when you are zoomed in on an object making fine changes or when working on a large object

Orbit “Orbit” is when you change your view by altering the perspective of which you are viewing an object. This allows the user to see different sides of the object.

Fillet “Fillet” is a command that rounds an interior or exterior edge of a design to a specified radius

Chamfer A symmetrical sloping of an edge or corner

View/Perspective Cube The cube in the top right corner of the drawing space. This indicates the perspective of the current view and allows you to change perspectives with a single click. By clicking the “home” button, it returns you to your isometric view.

Let’s try it out! Please open the 123D Design Program on the computer Please make the following shapes Square (2x2x2) Cylinder (Diameter =2, Height =4) Rectangle (2x4x1) (LxWxH) **Challenge Build: Square (4x4x2) with a 1” hole through the middle) Save this when you are done