The stationary tapping head is connected to the tool carrier, e.g. turret, via a tool holder. The tool moves axially onto the workpiece at a feed rate that is accurate to the pitch, which cuts the thread in a single operation. The opening mechanism of the head is triggered by the feed stop and the chasers release the workpiece and the return can take place in rapid motion. The head is closed by moving the closing lever axially or by means of an automatic closing device. The rotating thread cutting head is flanged to the machine spindles or picked up in a chuck. The opening and closing of the head is controlled by an external control rod or an internal drawbar. AREAS OF APPLICATION - Cylindrical control, fine pitch threads or tapered threads, right- or left-hand threads, pipe, trapezoidal, round and special threads - Thread according to English and American standards - Parallel profiles possible in grooving process - The heaviest cutting tasks and large diameters are effortless with the cutting head types WDK-WKK WAGNER CHASERS/THREAD CUTTING PLATES - Standard: HSS or HSSE - Nitrated - Coated: TIN, TICN, TIALN, CrN - Hard metal - Adapted to customer requirements ADVANTAGES - By exchanging the chasers it is possible for different thread types to be machined with only one cutting head - High efficiency due to chasers which can be ground - Short set-up times due to preset chasers - Time-saving working method due to single cut - High-precision thread chasers, the pitch and shape of which are adapted to the thread to be cut - High flexibility on almost all machines due to commercially available holders - Suitable for thin walled workpieces - Suitable for materials that can not be thread rolled