When is unified screw thread used
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general uses
What are running and sliding fits?
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used when the shaft must move freely inside a bearing/hole. Loosest of the
fits. There is always clearance between shaft and hole
Are fasteners permanent?
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No, they are not permanent in means of assembly- they are not welded or
adhered on
What is transition location fits?
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Transition between clearance and interference
What is Euler-Poincare law?
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V-E+F-H= 2(B-P)
Thread definitions: crest
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the crest is the top surface
What is the parts list?
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, an itemized list of the parts that make up the assembled machine
What is simplified representation?
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the simplified representation uses visible and hidden lines to represent the
major and minor diameters
why is tolerancing needed? (4)
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-manufacturing processes have limitations
-since variation from the drawing is inevitable, the acceptable degree of
variation must be specified
-large variation may affect the functionality of the part
-small variation will effect the cost of the part (precise manufacturing
required. Requires inspection and the rejection of parts)
Where is a hole dimensioned?
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The hole is dimensioned where it appears round or circular
, boundary representation (b-rep)
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A method used to build solid models from their bounding surfaces.
What is the importance of size dimensions?
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Used to define length, width, height, diameter of circles and radius of arcs
countersink symbol represented by text
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w
What are buttress threads used for?
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designed to handle heavy forces in one direction (truck jack)
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general uses
What are running and sliding fits?
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used when the shaft must move freely inside a bearing/hole. Loosest of the
fits. There is always clearance between shaft and hole
Are fasteners permanent?
,Give this one a try later!
No, they are not permanent in means of assembly- they are not welded or
adhered on
What is transition location fits?
Give this one a try later!
Transition between clearance and interference
What is Euler-Poincare law?
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V-E+F-H= 2(B-P)
Thread definitions: crest
Give this one a try later!
the crest is the top surface
What is the parts list?
Give this one a try later!
, an itemized list of the parts that make up the assembled machine
What is simplified representation?
Give this one a try later!
the simplified representation uses visible and hidden lines to represent the
major and minor diameters
why is tolerancing needed? (4)
Give this one a try later!
-manufacturing processes have limitations
-since variation from the drawing is inevitable, the acceptable degree of
variation must be specified
-large variation may affect the functionality of the part
-small variation will effect the cost of the part (precise manufacturing
required. Requires inspection and the rejection of parts)
Where is a hole dimensioned?
Give this one a try later!
The hole is dimensioned where it appears round or circular
, boundary representation (b-rep)
Give this one a try later!
A method used to build solid models from their bounding surfaces.
What is the importance of size dimensions?
Give this one a try later!
Used to define length, width, height, diameter of circles and radius of arcs
countersink symbol represented by text
Give this one a try later!
w
What are buttress threads used for?
Give this one a try later!
designed to handle heavy forces in one direction (truck jack)
