Minutes of Proceedings of the Institution of Civil Engineers

Minutes of Proceedings of the Institution of Civil Engineers true position of a slot In machining, the tool follows a very precise path and a workpiece must be located precisely and stably at a precise position slot Thus, the pin in true wallet slot Recall that a tolerance of position must be applied to a feature of size That's easy if the slot has no draft But our slot has draft So we cannot define the

true wallet slot The position allows you to pinpoint a functional location for your hole center in space using datum Then specify a tolerance around that true

true slot True Position Calculator for Holes ; Enter Position Deviation from Basic X,Y ; X: ; Y: ; Add Diameter Size Over Minimum: Maximum Material Condition Adjustment  If the feature is a slot, then this symbol will be omitted True Position Tolerance: The maximum allowed deviation from the theoretical position Material