Week 12 Lecture - Isometric Sketching
TECH 104 – Technical Graphics Communication
Week 11:
Isometric Sketching
TECH 104 – Technical Graphics Communication
First,
Here’s what we talked about last time…Working Drawings
TECH 104 – Technical Graphics Communication
Generally, a complete set of Working Drawings for an assembly includes:
1.) Detail Drawings of each non-standard part.
2.) An Assembly or Subassembly drawing showing all the standard parts in a single drawing.
3.) A Bill of Materials (BOM).
4. A Title Block.
Assembly Drawing of a Piston & Rod containing 8 parts.
An assembly drawing normally consists of the following:
1. All parts drawn in their operating position
2. A parts list or Bill of Materials (BOM)
3.Leader lines with balloons indicating all parts.
4. Machining and assembly instructions
Also,
Part Numbers
(of individual parts)
It’s own Drawing Number
Detail Drawing of the retainer ring used to fasten the rod to the piston .
TECH 104 – Technical Graphics Communication
A Closer Look at Title Blocks
They Contain:
A. Name & Address of Company
B. Title of the Drawing
C. Drawing Number
D. Names and dates of drafters, checker, issue date , contract number, etc.
E. Design Approval
F. Additional Approval Block
G. Drawing Scale
H. Federal Supply Code for
Manufacturers
J. Drawing Sheet Size
K. Actual or estimated weight
L. Sheet Number
TECH 104 – Technical Graphics Communication
And Attached to Title Blocks…Parts Lists
The information normally included in a parts list is as follows:
1. Name of the part.
2. A detail number for the part in the assembly.
3. The part material, such as cast iron or bronze.
4. The number of times that part is used in the assembly.
5. The company assigned part number.
6. Other information, such as weight, stock size, etc.
TECH 104 – Technical Graphics Communication
Record any changes -
Found in upper-right corner
Also on Many Assembly
Drawings…Revision Blocks
TECH 104 – Technical Graphics Communication
Remember Standard Thread Notes:
TECH 104 – Technical Graphics Communication
And How to Specifying Tap Drill Size :
TECH 104 – Technical Graphics Communication
And Thread Representation:
TECH 104 – Technical Graphics Communication
And Finally a Segway to Today’s Topic -
Pictorial Assemblies
Sectioned Assembly
Pictorial
Sketching
Classification of Sketches
With Isometric, Remember…
“30, 30, Vertical”
Isometric and Non-Isometric Liines and Planes
!
Steps in Creating an Isometric Sketch
!
Steps in Creating an Isometric Sketch
Use the
“Box In”
Method
Constructing an Isometric
Drawing Having
Non-Isometric Lines
Constructing
Angles in an
Isometric
Sketch
Locating Points to Create an
Isometric Drawing of an Irregular
Object.
Constructing
Drawings with an Oblique
Surface
Constructing
Irregular
Curves in an
Isometric
Sketch
TECH 104 – Technical
Graphics Communication
This Week’s Sketches
Assignment # 32 · Page 64 (1, 2, 3, 14)
(ISOMETRIC SKETCHES 1)
Assignment # 33 · (12, 24, 34, 35) On PowerPoint Only
(ISOMETRIC SKETCHES 2)
∙ Isometric Grid Paper to be used
∙ 4 Objects per Page / Two Pages – Total Points = 40
1.
3.
Isometric Sketches 1
2.
14.
12.
34.
Isometric Sketches 2
24.
35.
Practice
Problems
Practice
Problems
Practice
Problems
Practice
Problems
TECH 104 – Technical Graphics Communication
