# Print Reading Flashcards

1
Q

Orthographic print is what?

A

Representing a three dimensional object on a print.

2
Q

What are the six different planes of an orthographic projection?

A
Front
Right
Left
Top(plan)
Bottom
Rear
3
Q

What is the key view in orthographic projection?

A

Front view

4
Q

What are the two different types of orthographic design?

A

First angle projection,
Rare in North America

Third angle projection,
Most common in North America

5
Q

What is the order of view for third angle after the front(key view) view is drawn?

A
• top view is placed above
• right side view is placed on the right
• left side view is placed on the left
• bottom view is placed below
• the rear or back is placed on the far left
6
Q

What is the order of view for first angle after the front(key) view is drawn?

A
• Top view is placed below
• Right view is placed on the left
• Left view is placed on the right
• Bottom view is placed on top
• rear or back view is placed on the far left
7
Q

Why are top and right side views important?

A

Because a 2 dimensional print will not show around corners.

8
Q

When reading blueprints what terms are used to refer to measurement?

A

Width = W

Height = H

Depth = D

9
Q

What does the circle represent when looking at projection symbols?

A

Front view
- third angle, the right side view goes to the right of the front view.

• first angle, the right side view goes to the left of the front view.
10
Q

What is a pictorial view?

A

A view with three dimensions.

11
Q

What are the types of Pictorial views?

A

Perspective: less common in mechanical trades. Front view is undistorted and the top and right side taper into distance

Oblique: front face is undistorted, but other two faces are distorted in proportion to the angle on the scale.

Isometric: most common in mechanical trades. Front view is a 30 degrees from horizontal. Which makes all three axis 120 degrees apart

12
Q

Most important line on a sketch?

A

Object/visible line: THICK

13
Q

What does the centre line look like?

A

Thin, broken line made of alternating long and short lines.

14
Q

What is the purpose of a hidden line? What does it look like?

A

The hidden line is used to show objects hidden from view.

It is made up of a series of medium dark short dashes.

15
Q

What are extension and dimension lines used for?

A

Extension lines extend from but do not touch the object. Used with dimension lines to signify the distance.

Dimension lines indicate the distance

16
Q

What is a cutting plane line?

A

Thick, dark, broken or continuous lines with arrows at right angles on each end. Signifies where the sectional view was taken

17
Q

What does a phantom line represent?

A

It shows a mating part or assembly movement of an object.

18
Q

What does BC stand for?

A

Bolt circle

19
Q

What does BHC stand for?

A

Bolt hole centre

20
Q

what does BCD stand for?

A

Bolt circle diameter

21
Q

What does C to C stand for?

A

Centre to centre

22
Q

What does CTRS stand for?

A

Centres

23
Q

What does D or Dia stand for?

A

Diameter

24
Q

What does TYP stand for?

A

Typical

25
Q

What is an arc?

A

Segment of a circle. Should be dimensioned by its radius rather then diameter.

26
Q

What is a counterbore?

A

A hole that has been enlarged for a portion of its depth.

27
Q

What two standards are threads shown in?

A

American national standard institute (ANSI)

And

Canadian standards association (CSA)

28
Q

What are three views threads are shown in? I

A

Schematic

Pictorial

Simplified (most common)

29
Q

What is free length?

A

Length of the spring when it’s under load or stress.

30
Q

What are the two types of bearings?

A

Anti friction bearings -

Plain bearings

31
Q

What is the difference between aligned method and unidirectional dimensioning?

A

Aligned method all dimensions are written parallel to the dimension lines

Unidirectional method all dimensions are written parallel to the bottom of the drafting paper

32
Q

Third angle glass box theory helps visualize what they are talking about. See image

A
33
Q

What is the difference between a spot face (SFACE) and a counterbore?

A

Spotface has no specific depth. Main function is to provide a flat seat for the head of a bolt or washer

34
Q

Counter sink symbol and abbreviation

A
35
Q

Break lines

A
36
Q

Steel symbol

A
37
Q

Cast iron symbol

A
38
Q

Aluminum symbol

A
39
Q

Brass/copper/bronze symbol

A
40
Q

A
41
Q

S shape

A
42
Q

W shape

A
43
Q
A