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32 Cards in this Set
- Front
- Back
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What views are used to depict flat object?
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Top views
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Describe a acme screw thread
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genreal; 29 degree included angle
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describe a situation when a half section needs to be used.
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Used when both interior and exterior features must be shown
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What are the two units of measure used to indicate surface roughness?
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1. microinches
2. micrometers |
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What view are used to describe most parts found in an assembly?
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Front view , top view and side view
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Whats the purpose of finish marks?
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to show machined finished surfaces
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Describe a situation when a full section needs to be shown
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when ALL details need to be shown.
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idnetify the purpose of a roughness value of 8 microinches.
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such parts as surfaces of cylinders
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when are auxiliary views in a working drawing?
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Angled parts(incline). That needs to be shown at true suze & shape.
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The assembly drawing we did of the shaft support was a general assembly.How do you know this?
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No dimensions. Broken section
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when dimensionin an angled surface in an auxiliary view, what dimensioning tool would you use?
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True(dimension size with arrow)
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Identify a purpose for the roughness value of 125 microinches.
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mating surfaces held together by a bolt or rivet with no motion between them
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What views are used to describe simple cylindrical parts?
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side view & end view
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describe a square screw thread
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great power and force in both directions
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What is a cell?
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A file(symbol) of a standard part.
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Do outline assmeblies include dimensions?
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Yes , overall dimensions; center to center
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Threaded fastneners are considered to be ------ fasteners
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temporary
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Identify a purpose for a roughness value of 16 microinches.
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high speed shaft bearing & extreme tension members
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Why are left handed threads sometimes specified?
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When the torque of the fastener would loosen a right hand thread
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Describe a situation when an offset section must be shown.
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Used when features are not lined up.
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How does a draft person indicate the difference between an external fastener(bolt) and an interior fastener(nut)?
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A - external
B - internal |
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describe a buttress screw thread
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great power and force in 1 direction3+
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Threaded fastneners are considered to be ------ fasteners
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temporary
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What does thread SERIES mean?
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number of threads/ outside diameter
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WHat are multiple lead threads used for?
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for rapid advancement of parts
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Describe a unfied screw thread
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most common; 60 degree angle
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Rivets are considered to be
------ fasteners |
permanent
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Idnetify 3 types of assmebly drawing
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1. Detailed
2. General assmelby 3. outline assmebly |
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Identify 3 ways threads can be on a drawing
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1. detailed
2. simplified 3. schematic |
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Do general assmeblies include dimensions?
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NO
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How can a cell be used to improve drawing performance?
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It can be inserted into any other drawing file at any given scale
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what is meant by the term thread CLASS?
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HOw accurate the part is made
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