Final answer:
The question pertains to machining terms 'Rough Pass' and 'Finish Pass.' A Rough Pass involves quick material removal with less emphasis on precision, using deeper cuts and faster feed rates. A Finish Pass, conversely, focuses on precise dimensions and smooth finish by using shallower cuts and slower feed rates.
Step-by-step explanation:
The terms 'Rough Pass' and 'Finish Pass' are terms used in machining and manufacturing processes. A Rough Pass generally refers to the phase of machining where the majority of the material is removed rapidly, but without much concern for the final surface finish or dimensional accuracy. The parameters for this pass, such as depth of cut and feed rate, are set to prioritize speed and efficiency of material removal.
Rough Pass and Depth/Feed in machining
Rough Pass:
Rough pass refers to the initial pass made during machining where a significant amount of material is removed in a short amount of time. It is typically done at a higher depth and feed rate to remove excess material quickly.
Depth/Feed:
Depth refers to the amount of material removed in a single pass, while feed refers to the rate at which the cutting tool moves along the workpiece. In finish pass, a smaller depth and feed rate are used to achieve a smoother surface finish. For example, in milling, a roughing pass might have a depth of 0.2 inches and a feed rate of 10 inches per minute, while a finish pass might have a depth of 0.05 inches and a feed rate of 5 inches per minute.
Conversely, a Finish Pass is the phase of machining where the part is given its final dimensions and surface finish. During this pass, the depth of cut and feed rate are much lower than in the rough pass. This ensures a smoother surface finish and a more precise and accurate final product.