Manufacturing Processes & Production Flashcards
7 cards from real CPT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Manufacturing Processes & Production flashcards as text
What is the primary purpose of a 'poka-yoke' device in manufacturing?
Answer: To prevent or detect errors before they become defects
Poka-yoke (mistake-proofing) devices are designed to prevent operator errors or immediately detect defects, eliminating the possibility of defects reaching downstream processes.
In sheet metal fabrication, what process uses a punch and die to cut a blank shape from flat sheet stock?
Answer: Blanking
Blanking uses a punch and die to shear a flat piece (blank) from sheet metal stock, which then becomes the workpiece for further operations.
Which production scheduling method produces only what is needed, when it is needed, in the quantity needed?
Answer: Just-In-Time (JIT)
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.
What is the function of a 'relief angle' on a cutting tool?
Answer: To prevent the tool flank from rubbing against the workpiece
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.
In extrusion manufacturing, what distinguishes 'direct extrusion' from 'indirect extrusion'?
Answer: In direct extrusion, the ram and material move in the same direction; in indirect, the die moves toward the billet
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.
A machine produces parts with a process capability index (Cpk) of 0.85. What does this indicate?
Answer: The process does not fully meet specification limits and may produce defects
A Cpk below 1.0 indicates the process is not fully capable — it extends beyond at least one specification limit, resulting in some nonconforming parts.
Which casting process forces molten metal into a permanent steel mold under high pressure, producing high-volume, dimensionally accurate parts?
Answer: Die casting
Die casting injects molten metal into hardened steel molds under high pressure, enabling high production rates with excellent dimensional accuracy and smooth surface finishes.