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15 Cards in this Set
- Front
- Back
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* Small evenly distributed erregularities in the surface layer, which are characteristic of different machining and finishing operations peformed on the workpiece.
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Surface Finish
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* In simple terms, define surface finish.
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The deviation from the ideal flat surface.
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* How are deviations in surface finish expressed?
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1. Roughness
2. Waviness 3. Lay 4. Flaws |
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* Define "Roughness" (Y)
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The size of finely distributed surface pattern deviations for the smooth surface. Height from the surface.
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* Define "Lay" (S)
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The dominant direction of the surface pattern. Milling, turninng, or grinding.
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What is the symbol for surface finish?
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* What changes on the surface finish symbol if "roughness" is the only parameter specified?
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The horizontal line can be ommitted.
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* What does the triangle located in the "V" of the checkmark indicate?
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A machining allowance requirement.
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* What is the symbol for "Roughness height average or maximum-minimum roughness height average"?
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A
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* What is the symbol for "Lay"?
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E
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* What is the symbol for "Machining Allowance"?
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B
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* What is the symbol for "Roughness sampling length"?
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D
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* What is the symbol for "Wavines and waviness spacing"?
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C
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* Study the Surface Finish Symbol in Chapter 8
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See page 14
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* What devices can be used to measure surface finish?
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1. Surface finish gage
2. Profilometer 3. Visual comparitor |
