Multitasking tool for e.g. drilling threaded hole on engine part of motor vehicle, has chamfering part connected to body, and tapping cylinder with outer diameter that corresponds to inner diameter of hole

摘要

The tool (100) has a drill bit (110), a tapping cylinder (120) and a chamfering part (130) forming a monoblock piece made of tungsten carbide, where the chamfering part is connected to a body (140). The body has attachment units to attach the body with rotating driving units of a machine tool. The tapping cylinder has an outer diameter that corresponds to an inner diameter of a threaded hole to be formed. The drill bit has a length (L) higher than the depth of the threaded hole, and the chamfering part has two chamfers (131, 132) oriented in an opposed manner with respect to each other. An independent claim is also included for a method of forming a threaded hole across a wall by using a multitasking tool.