Upper diameter of hole evaluator uses Larger Diameter = 2*Depth of Machined Surface*Empirical Constant*Smaller Diameter^2+Smaller Diameter to evaluate the Larger Diameter, The Upper diameter of hole formula is defined as the width of hole on the upper surface of workpiece during EDM. Larger Diameter is denoted by Dsd symbol.
How to evaluate Upper diameter of hole using this online evaluator? To use this online evaluator for Upper diameter of hole, enter Depth of Machined Surface (Hsd), Empirical Constant (KT) & Smaller Diameter (d) and hit the calculate button.