Manufacturing And Production Technology - Study Mode

Explanation

Solution: Counter-boring is a machining process used to enlarge an existing hole to a specific diameter and depth, usually to allow the head of a bolt or screw to sit flush with or below the surface. In counter-boring, the tool experiences a higher contact area and increased resistance due to the larger diameter compared to the original drill. As a result, the cutting speed for counter-boring should be less than that of drilling to reduce heat generation and tool wear. This helps maintain dimensional accuracy and prolongs the life of the cutting tool. Therefore, the correct answer is Option B: Less than