Shop Bench Machine

Question 1

Shear machines can be broken down into types by

Answer 1

Shear design
Drive systems

Question 2

Power shear are electrically run with motors driving either a

Answer 2

hydraulic system or mechanical system

Question 3

When cutting stainless steel the shear’s capacity is reduced

Answer 3

4 gauges

Question 4

Varible rack machines require materials

Answer 4

1/2 or thicker

Question 5

Direct drive shears motor turns off once the cut is made true or false

Answer 5

True

Question 6

Mechanical shears are fast by design true or false

Answer 6

True

Question 7

Once the mechanical shears activated it will not ?

Answer 7

Stop

Question 8

Having a lower rack angle will give a better ?

Answer 8

Cut

Question 9

What shear is more forgiving when the the pedal is released

Answer 9

Hydraulic

Question 10

Air bending provides greater greater leverage with ?

Answer 10

Wider v-die and less pressure

Question 11

What’s the top and bottom bending tool name

Answer 11

Top is the bunch
Bottom is die

Question 12

Coining offers ?

Answer 12

Most accurate but requires highest amount of pressure

Question 13

Bottom bending is used in high to low production and offers

Answer 13

Sharp corners and consistent accuracy

Question 14

Air bending offers ?

Answer 14

Less accuracy and less tonnage

Question 15

Disadvantage of air bending

Answer 15

Inconsistent of bends

Question 16

Making a break above the tonnage chart is ?

Answer 16

Dangerous

Question 17

Inside corner bend must add

Answer 17

20 percent

Question 18

Outside corner bend must subtract

Answer 18

80 percent

Question 19

Name two methods of forming methods

Answer 19

Coining
Air bending
Bottom bending

Question 21

When forming inside dimensions, we must add

Answer 21

20%

Question 22

When forming outside dimensions, we must subtract

Answer 22

80%

Question 23

What is the most accurate way to determine bend allowance

Answer 23

Make trial bend

Question 24

Name two methods of forming on a press break

Answer 24

Coining
air bending

Question 25

How to compensate for springback

Answer 25

Overbend

Question 26

What can be done to minimize irregularities caused by deflection?

Answer 26

Shimming should be done from the centreline outward

Question 27

What day can be used to form unlimited number of shapes?

Answer 27

Rubber are you urethane rubber dies

Question 28

List advantages of rubber dice

Answer 28

Will not scratch metal Unlimited shapes Fast set up

Question 29

List the disadvantage of rubber dies

Answer 29

More tonnage Rubber wears out faster Cost of rubber dies

Question 30

Coin is the most accurate but it’s disadvantage is

Answer 30

Distort the material

Question 31

Less than half metal thickness will use how …….less tonnage

Answer 31

8 times out of

Question 32

More then 1/2 metal thickness will use

Answer 32

10 times the tonnage

Question 33

Name the guys used to eliminate marks and scuffing one forming

Answer 33

Rotator Rollform dies

Question 34

Can radius forming with roll forming roll dies

Answer 34

Yes

Question 35

Press brakes are rated how

Answer 35

Psi

Question 36

When sharing stainless steel, you must remember that stainless steel reduces the sheer by

Answer 36

4 gauges

Question 37

Power shears are on made cut materials that exceed quarter an inch true or false

Answer 37

False yes they can

Question 38

What dose the rack angle refer to

Answer 38

Shearing angle