Mechanický plochý klíč

Abstract

This master thesis deals with the construction plan of mechanical open-end spanner designed for tightening and loosening nuts or bolts. The introduction chapter describes the history of a bolts. Subsequently is the thesis concerned with the issue of bolts in general, bolt connections, and the ways of its tightening. Next part deals with the design of open-end spanner gears and his final construction. The gears are checked for strength, the lifetime of rolling bearings and capacity of the sliding bush are calculated. Finally, other stressed parts are checked.