CPT Manufacturing Processes & Production 3

Question 1

What is the primary purpose of a 'poka-yoke' device in manufacturing?

Accepted Answer

To prevent or detect errors before they become defects

Answer

Poka-yoke (mistake-proofing) devices are designed to prevent operator errors or immediately detect defects, eliminating the possibility of defects reaching downstream processes.

Question 2

In sheet metal fabrication, what process uses a punch and die to cut a blank shape from flat sheet stock?

Accepted Answer

Blanking

Answer

Blanking uses a punch and die to shear a flat piece (blank) from sheet metal stock, which then becomes the workpiece for further operations.

Question 3

Which production scheduling method produces only what is needed, when it is needed, in the quantity needed?

Accepted Answer

Just-In-Time (JIT)

Answer

Just-In-Time (JIT) production aligns output precisely with demand, minimizing inventory and waste by producing only what is needed at exactly the right time.

Question 4

What is the function of a 'relief angle' on a cutting tool?

Accepted Answer

To prevent the tool flank from rubbing against the workpiece

Answer

The relief angle (clearance angle) on a cutting tool prevents the tool's flank face from rubbing against the freshly machined workpiece surface, reducing friction and heat.

Question 5

In extrusion manufacturing, what distinguishes 'direct extrusion' from 'indirect extrusion'?

Accepted Answer

In direct extrusion, the ram and material move in the same direction; in indirect, the die moves toward the billet

Answer

In direct (forward) extrusion, the ram pushes the billet through a stationary die; in indirect (backward) extrusion, the die moves into the stationary billet, reducing friction.

(CPT) Certified Production Technician Practice Test

(CPT) Certified Production Technician Practice Test

CPT Manufacturing Processes & Production 3