Ch 7 Pnuematics Flashcards

1
Q

How does a check valve work?

A

Valve that flows in only one direction.

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2
Q

What psi is the spring for the poppet on a check valve?

A

5 PSI

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3
Q

What motion does a cylinder make?

A

Straight line Linear motion.

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4
Q

What is the most common pneumatic actuator?

A

Cylinder

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5
Q

A motor creates what type of motion?

A

Rotary motion.

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6
Q

What are the two ends of a cylinder?

A

Rod end / blind end.

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7
Q

What is the main seal on a cylinder that keeps pressure in?

A

Primary seal.

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8
Q

What will lead to premature failure in a cylinder.

A

Bad wiper seal.

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9
Q

What are the four types of cylinder mounts?

A

Clevis mount
Trunnion mount
Side lug mount
Flange mount

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10
Q

What is a single acting cylinder?

A

One threaded port / powered motion in one direction.

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11
Q

What is a double acting cylinder?

A

Two threaded ports / powered motion in both directions.

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12
Q

What is a single rod double acting cylinder?

A

Rod extends from one end.

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13
Q

What is a double acting double rod cylinder?

A

Rod extends from both ends.

Ex. Steering on a fork truck.

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14
Q

What are two types of load on a cylinder?

A

Thrust load - extension of rod. ( disadvantage is buckling (breaking of Rod) or deflection (bending of rod) )

Tension load - retraction of Rod. ( disadvantage is threads rip off. Piston Separates form Rod. )

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15
Q

What is shock?

A

Sudden stop ( kinetic energy into concussion)

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16
Q

What is a cushion?

A

Protects against shock.
Slows down a cylinder at the end of a stroke.

17
Q

How do you adjust a cushion?

A

With a needle valve

18
Q

How does a rotary motor work?

A

Put compressed air into the smallest area vanes then Pressure will exhaust at largest area vanes to create rotary motion.

19
Q

What is a ram cylinder?

A

Piston and the rod are same size