spaennanordning foer automatic exchange of verktygselektroder saerskilt at machines with electric ljusbaage

摘要

The clamping device consists of a basic body (1) with a plane, forwardly bevelled clamping surface (2), to which two plates (8), having stop edges (7) pointing obliquely towards one another, and two lateral profiled guide strips (4) for a tool holder (5) are fastened. This tool holder (5) is cylindrical and has in the upper part a flange (12) with a radial pin (11) fastened in it. A fixed stop and an elastic stop (10) are arranged in the basic body (1). A clamping mechanism contains two stirrups (13) elastically mounted against one another and having one bottom lug (14) each and one top head (24) each. Each head (24) rests on a strap (25) and the end of a rocking lever (16) which is mounted on a pivot bearing (17) which is fastened to an eccentric pin (18) of a shaft (19). Sitting on the shaft (19) is a worm wheel (20) which interacts with a worm (21) arranged on the shaft of a drive unit (22). A broken passage (27) with the fluid feed (28) is formed in the basic body (1). IMAGE