ROUTER DEPTH OF CUT ADJUSTMENT MECHANISM

摘要

A portable electric router having a depth of cut adjustment mechanism including an adjustment ring (126) which engages a screw thread (118) on the motor housing (102) and rotationally engages the router base (108). There is further provided an arrangement for preventing relative rotation between the motor housing and the base. The adjustment ring (126) is formed as a split ring with projections (136, 138) adjacent opposite sides of the split, each with a frusto-conical camming surface (152, 154). A circular clamp knob (146) mounted for threaded rotation on a bolt (144) passing through the projections (136, 138) radially with respect to the router motor housing (102) bears against the camming surfaces (152,154) so as to squeeze the ring (126) in order to effect a clamping action as the knob (146) is moved inwardly. In order to provide limit stops for present depths of cut, a pair of stop rings (156) are provided which are angularly rotatable on the router base (108). Each of the stop rings (156) includes an interference projection (164), 166) and the adjustment ring (126) has a table (182) fixedly mounted thereon which extends to a point between the interfering projections (164, 166). The stop rings (156) may be fixed to the router base (108) to limit the range of angular rotation of the adjustment ring (126).