Drill machine with thread conserving control e.g. for drill, has carriage with movable rotary drive clamped at lower end and carriage has thread and feed drive separated from rotary drive and operable for regulating valve

摘要

The drill press has a carriage (10) with a movable rotary drive (12) clamped at a lower end (18). The carriage has a thread (15), and a feed drive (20) separated from the rotary drive and operable for a regulating valve (21). A selector valve (30) is assigned to the regulating valve, which can be adjusted for the carriage traction power when bolting to casing pipes (14). The selector valve is connected to a working line with the tank (27) being adjustable.