BNG 101 – Engineering Graphics

Slide Set 4 – Orthographic Projection II – Isometric Projection II and Drawing Views

(Read Planchard 2-21 to 2-26)

• Today – Isometric projection II, drawing views and dimensioning I

• Thursday, November 7 – Short quiz – isometric drawing – Dimensioning II – HW 3-1 assigned *due 11/19*

• Tuesday, November 12 – Tolerancing I – HW 3-2 assigned *due 11/19*

• Thursday, November 14 – Short quiz – tolerancing – Tolerancing II

• Tuesday, November 19 – Course evaluations – Exam review

Final Exam: Friday, November 22, 2:30-4:30pm

New Project Due Date: Tuesday, November 26 @ 5pm

Schedule for remaining classes

• Corrected HW 2 posted • Short quiz on isometric drawing - Thursday • Lab 4 – Lofts and Assemblies Mates tutorials –

has been posted on course website – Because these tutorials will be useful to develop skills

needed for project, you may do this on your own before next week

– Some rules • If completed on your own, it is ok not to come to lab next week, but

you MUST send me the deliverables for parts 1 and 3 before the start of the next lab

• The project progress update must be current through Sunday, November 18 (the day before the lab report due date), so please send me your complete lab report on Monday, November 19

Other announcements

Offset location measurements and rules of parallelism

• How would you locate point A in the isometric view?

Edges parallel to edges of the main block in the front and top view will be parallel to the same edges in the isometric drawing

Offset location measurements and rules of parallelism

How to draw a non-isometric line

How to draw a non-isometric line

Isometric sketch

How to draw a non-isometric line

Isometric sketch

How to draw a non-isometric line

Isometric sketch

Views to convey additional information

section view detail view

broken-out section view

Detail view

• A Detail View in general is used to create a new drawing view which is an enlarged of an existing view – Also called a removed view of greater scale

• The enlarged portion is enclosed using sketch geometry – usually a circle or other closed contour like a spline

Detail view

Detail view – dimension

Broken-out section view

• A broken-out view is used to cut away a portion of the assembly in a drawing view, expose the inside and add hatching

• Depth can be added

Broken-out section view

Break view

• Part of an existing (not a separate) view • Adds a break line to a selected view • Displays the drawing view in a larger scale or smaller sheet size