GFU is a competent partner for professionals in many countries when it comes to solving complex,
technical problems with advanced and trend-setting technologies.
Our team develops and offers a complete
solution concept in line with the customer’s specific requirements.
The tube is held axially by at least two clamping jaws during forming. A guided drawing-in ring or expanding mandrel is pushed into/over the tube and in this way expands/reduces the workpiece. The closed design of the machine housing preferred by GFU ensures:
For necessary multiple operations, we offer an optional automatic tool changer.
The high-speed end-forming is based on the flow-forming process principle. The main difference is that the tool is not a roller which runs off a specific shape, but a pot-shaped tool in which the entire course of the shape is incorporated. The components that can be produced by this process must be rotationally symmetrical.
The tool segments (2, 3 or 4-jaw tools) exert radial compressive forces on a rotating workpiece. Different workpiece shapes can be achieved by appropriate design of the tool segments. Depending on the degree of forming, this process takes place cold or hot.
Upsetting is based on the principle that two die segments enclose the partially heated pipe and the material is then upset in the axial direction by 1 or 2 punches. Both tube and solid materials can be partially upset. Contours are possible via the tool geometry.
Punching is based on the principle that a narrow punch (die) is positioned inside the tube and then the tube is fixed around the punch with 2 split tool halves. A cutting punch is then pressed very precisely onto the outside of the tube below the cutting punch hole at high speed and force, creating a hole. The tubes are fed in using a servo motor and the tube can be punched several times within a cycle. multiple punchings within one cycle. The systems are equipped with a punching hole control, which ensures that the quality of the output product is guaranteed. There are also DMC readers on the system for data transfer and quality control of the end products.
