What are the tolerances for machining flatness tolerance？
The machining flatness tolerance is the condition that the actual shape of the plane element on the part keeps the ideal plane, that is, the flatness degree of the plane element commonly referred to. The flatness tolerance is the maximum allowable variation of the actual surface from the ideal plane. There are many plane elements on the parts, such as flat plate, workbench surface, end face of parts, box joint surface, etc. All kinds of plane elements on the parts, regardless of their location, shape profile changes, the geometric characteristics are exactly …
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