Timber testing drill

摘要

The timber testing drill comprises a hollow drill with a tip has a conical spiral that carries a thread cutter. The testing drill also has a drive and facility for torque indication. The testing drill has a carriage to hold the drill (2), so that the carriage consists of two parts, which are rotatable against each other across a force pick-up (11). A casing (1) with a rail (8) is guided in an axial direction, with the help of one of the two carriage parts (7) Facilities are provided for the recording of the translation of the carriage and also for the recording of the torque reacting on the force pick-up. An additional guide (9) is provided for the moving carriage part (6).