Electric tool

摘要

A work tool has an electric motor (1) with an exchangeable tool holder (3) on the shaft (2). The rotor of the motor can slide along its axis and the control unit (4) sets its position pneumatically, electromagnetically or electronically. It also controls its speed. There are different adjustments for different tools. The angle between the axis of the tool holder and that of the shaft is adjusted by a second control unit. The motor has spring supports (13) which are stronger in the axial direction than in the radial one.