Traditional Culture Encyclopedia - Traditional festivals - What are the types of tolerance principles? What are the differences in their use?
What are the types of tolerance principles? What are the differences in their use?
1, shape tolerance
Shape tolerance refers to a single actual measured elements of its ideal measured elements of the permissible amount of change, including straightness, flatness, roundness, cylindricity, no datum requirements of the line contour and no datum requirements of the surface contour of the six items.
2, direction tolerance
Direction tolerance refers to the measured elements of the benchmark in the direction of the amount of change allowed, including parallelism, perpendicularity and inclination of the three items.
3, positional tolerance
Positional tolerance is associated with the actual measured elements of the benchmark in the position of the allowable amount of change, including position, coaxial (center) and symmetry of three items.
4, runout tolerance
Runout tolerance refers to the actual elements to be measured around the reference axis of the maximum allowable amount of runout one week or several weeks.
Expanded Information:
Referenced Standards
The following standards contain provisions which, by reference in this standard, constitute provisions of this standard. At the time of publication of this standard, the versions shown are valid. All standards are subject to revision, the use of this standard parties should explore the possibility of using the latest version of the following standards.
GB/T 1182-1996 shape and position tolerance general rules, definitions, symbols and drawing representation GB/T 16671-1996 shape and position tolerance maximum solid requirements, minimum solid requirements and reversible requirements .
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