Drill aid for guiding a drilling tool with a positioning device and method for positioning the drill aid on a substrate to be machined

摘要

The drilling device has a fastening unit (6) for fastening drilling device at processed surface. A guide unit (7) has a receiving element (12) which is connected to fastening unit. A guide insert (31a) is inserted in receiving element, for guiding a drilling tool along direction of drilling. A positioning device (32) is provided with a marking unit (37) and is insertable into the receiving element. An independent claim is included for method for positioning drilling device.