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First Year Millwright 2018 > Layout > Flashcards

Flashcards in Layout Deck (25)
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1

Which part of the combination set would be used to find the center on the end of a shaft?

A center head rule

2

What are the three(3) grades of accuracy that surface plates are manufactured in?

*Grade AA - laboratory
*Grade A - Inspection
*Grade B - Toolroom or shop grade

3

What are the most common scribers used in layout?

*high speed steel knife edge scriber
*carbide edge knife scriber
*pocket scriber
*engineers scribe

4

Precision layout with a vernier height gauge is accurate to?

.001 inch or .02mm

5

Dividers are available in two types

*Firm Joint
*Spring type

6

The most common used hammer for layout is?

Ball- peen hammer

7

What is the most common used square for basic layout?

Combination square

8

A prick punch has an included angles that ranges from?

30° to 60°

9

A center punch has an included angle of?

90°

10

What is the most common tool used for precision layout?

The height gauge

11

What are hermaphrodite calipers used for?

to scribe lines parallel to an edge, and it can be used to find the centre of a shaft


note: accuracy may not be accurate

12

List the hermaphrodite calipers

*Firm joint
*Lock joint with fine adjustment

13

The accuracy of the layout will depend on?

How square and flat the edges of prepared work piece are made

14

What is the safest oil to use when quenching oil hardening parts?

High flashpoint quenching oil

15

What mixture can be applied to the surface of large size castings and hot rolled metals?

Lime and Alcohol

16

On surfaces of hot rolled steel and castings to make layout more identifiable, you should use?

Chalk

17

The mixture that can be use during layout on metals such as aluminum and copper ii?

Vermilion and shellac

18

Copper sulphate should be used on?

Ferrous metals

19

When angles are laid out with a bevel protractor, the attainable accuracy is?

0.5° (30 minutes)

20

Before using a vernier height gauge it is important to?

To zero the vernier to the reference surface

21

For maximum reliability when setting the dividers to a dimension on a steel rule?

You should set one point to the 1 inch graduation or the 10 mm mark of the rule

22

If lines are scribed on to a work piece it is considered to be?

Temporary layout

23

The grade of the surface plate which is used in the shop is?

B-Grade

24

What is an acute angle?

Anything less than 90° of an angle

25

When using basic semi-precision layout practices. all measurements for any location must be taken from?

Reference line or the finished edge