Thread gauge slides and measuring instrument holder with fine (precision) adjustment

摘要

The measuring instrument is conceived for simple and rapid measurement of the thread test dimensions, in particular for large diameters and pitches (leads). The fine adjustment at the measuring instrument holder enables the measuring instrument (dial guage, clock gauge, dial indicator) (gauge) to be brought quickly to the adjusted height. The gauge slide (Fig. 1) for the adjusted height "H" is produced to the precise dimension of (h/2) and thread angle. Fig. 3 is produced for the adjusted height "H" to the precise measure of the core diameter and thread angle. Fig. 4 is intended for testing the core diameter. Fig. 2 can be used to test the thread profile (form) at different points. The calculation for the adjusted height "H" relates in the case of all gauge slides to their lower measurement point and outside diameter (actual dimension). The adjustment of the instrument to the adjusted height "H" requires no standard measure or pattern. In the case of Fig. 1, the adjusted height "H" is outside diameter (actual dimension) minus effective diameter (desired dimension) divided by 2. In the case of Fig. 2, as described, depending on design. In the case of Figs. 3 and 4, it is outside diameter (actual dimension) minus core diameter (desired dimension) divided by 2. When the instrument is adjusted to the adjusted height "H" using standard measures or patterns, it would still be necessary to calculate a difference of the workpiece from the standard measure. <IMAGE>