Important Terms
Important terms for Gage design |
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It is the algebraic difference between a size (actual, maximum etc.) & the corresponding basic size.
It is the algebraic difference between on actual size & the corresponding basic size.
It is the algebraic difference between the maximum limit of size & corresponding basic size.
It is the algebraic difference between the minimum limit of size & corresponding basic size (+ve or –Ve).
It is the straight ling to which the deviation are refer to in a graphical presentation of limits & fits In the line of ‘0’ deviation & represents the basic size.
This is the deviation either the upper or the lower deviation which is the nearest one to the ‘0’ line for either hole or shaft. It fixes the position of the tolerance zone in relation to the zero ling.
Both the limit of size are on the same size of the zero line one of the limit of the size may be the basic size.
One of the limits of size is on one side of the zero line & the other limit of size is on the other side of the zero line.
The term refers not only to the diameter of a circular shaft but also to any external dimension on a component.
The term hole refers not only the diameter of a circular Hole but also any internal dimension on a component.
Basic size is or nominal size is a standard size for the part & is the same both for the hole and its shaft.
Actual Size is the dimension as measured on finished part.
These are maximum & minimum permissible size of part.
Maximum limit or higher limit is the maximum size permitted for the part.
Minimum limit or lower limit is the minimum size permitted for part.
Is the difference between maximum limit of size & minimum limit of size.
Is an internal difference between the maximum material limits of meeting parts for shaft the maximum material limits will be its high limit & for hole it will be its lower limits.