Краткий справочник по резанию материалов на металлообрабатывающих станках TECHNICAL DATA

Краткий справочник по резанию материалов на металлообрабатывающих станках TECHNICAL DATA

Краткий справочник по резанию материалов на металлообрабатывающих станках TECHNICAL DATA _ TECHNICJ SURFACE ROUGHNESS SURFACE ROUGHNESS (From JIS B 0601-1994) Type Code Determination Determination Example (Figure) tn co CD 8 E V D < < <0 a) Ra Ra means the value obtained by the following formula and expressed in micrometer (um) when sampling only the reference length from the roughness curve in the direction of the mean line, taking X-axis in the direction of mean line and Y-axis in the direction of longitudinal magnification of this sampled part and the roughness curve is expressed by y=f(x): Ra= 0 f(x) dx gi '