Workholding in Machining Quiz

What is workholding used for in machining?

• To paint a workpiece

• To measure a workpiece

• To secure a workpiece

• To transport a workpiece

What is the most basic workholding device?

• A vise

• A clamp

• A magnet

• A bolt

Why is work held in a jig drilled more quickly?

• It is lighter

• It is more colorful

• It is more accurately positioned

• It is cheaper

What is the effect of placing the clamping bolt far from the work?

• Increases clamping force

• Decreases clamping force

• Has no effect

• Stabilizes the workpiece

What is the role of packing in the clamping process?

• To add weight

• To raise the work off the table

• To provide decoration

• To reduce noise

What is the size range available for a three-jaw self-centring scroll chuck?

• 50mm to 300mm

• 100mm to 600mm

• 200mm to 800mm

• 150mm to 500mm

How does a three-jaw self-centring scroll chuck operate?

• By manual adjustment of each jaw

• By a pinion engaging in a gear on the front of a scroll

• By hydraulic pressure

• By magnetic force

What is the function of the teeth on the chuck jaws?

• To cut the workpiece

• To engage in the scroll

• To polish the workpiece

• To measure the workpiece

What is a three-jaw self-centering scroll chuck used for?

• Gripping objects externally and internally

• Only for external gripping

• Only for internal gripping

• For decorative purposes

What is the purpose of jaws that grip internally?

• To hold objects for painting

• To machine the outside diameter or face

• To measure the diameter

• To polish the surface