Millwright Level 1 Practice Exam

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Prepare for the Millwright Level 1 Exam with our comprehensive quiz. Engage with multiple choice questions designed to test your knowledge and skills relevant to the millwright trade. Achieve your certification with confidence!

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If a milling machine spindle rotates at 200rpm and the cutter has 6 cutting edges with a chip load of 0.003", what is the feed rate?

1.2 inches per minute
2.4 inches per minute
3.6 inches per minute
4.8 inches per minute

The correct answer is: 3.6 inches per minute

To determine the feed rate for a milling machine, the formula is as follows: Feed Rate (in inches per minute) = Spindle Speed (in revolutions per minute) x Number of Cutting Edges x Chip Load (in inches). In this case, the spindle speed is 200 rpm, there are 6 cutting edges, and the chip load is 0.003 inches. Applying the formula: Feed Rate = 200 rpm x 6 cutting edges x 0.003 inches. When calculated: Feed Rate = 200 x 6 x 0.003 = 3.6 inches per minute. This shows that the correct feed rate is indeed 3.6 inches per minute, which corresponds with the choice provided. This formula integrates all necessary factors like spindle speed, number of cutting edges, and the chip load, ensuring that it reflects the actual material removal process effectively.