Handbook of spinning and shear forming

In: Proceedings of the third international conference on rotary metalworking processes, Kyoto, 8—10 Sept, pp — Google Scholar. Arai H Robotic metal spinning — forming non-axisymmetric products using force control. Awiszus B, Meyer F Metal spinning of non-circular hollow parts.

In: 8th international conference on technology of plasticity Italy, Verona, 9—13 Oct , pp — Google Scholar.

Brown J Advanced machining technology handbook. Klocke F, Wehrmeister T Laser-assisted metal spinning of advanced materials. Matsubara S A computer numerically controlled dieless incremental forming of a sheet metal. Omer Music 1 Email author 1. Industrial metal spinning is done by the CNC machining systems. Apart from increasing the production volumes, these machines are automated and are more accurate.

The first step of the process entails mounting a block onto the drive section of the lathe. From there a pre-sized disk-shaped metal is clamped against this clamp with the help of a pressure pad. The clamped block and the workpiece are then rotated at high speed. Localized or concentrated force is then exerted on the workpiece so that it can flow over the block.

Various metal spinning tools generate the force. Some workpieces are then removed from the block while other complex workpieces are channeled to the multi-piece blocks. More complex pieces are spun over the ice forms.

Regardless of the case, the diameter of the workpiece will always be smaller than the initial diameter when you started working on the piece. This makes it necessary for the workpiece to be thickened or elongated o compensate for the reduction.

Another process known as necking or reducing is done to allow the workpiece to alter its geometries. During the entire process, very little attention is given to the surface finish of the metal. Hot spinning refers to the process of spinning a piece of metal on a lathe while a high beam of heat is directed to the workpiece.

After the workpiece is heated, the subject metal is then shaped whereby the lathe is pressed against the heated surface. Necking or reduction of the diameter can still be achieved through the hot spinning technique. Although metal spinning is designed to achieve one common goal, the steps and techniques used are not always the same.

This means that there are different iterations of this process. The most common iteration of metal spinning is the multipass spinning. This is where the roller of the spinning tool rolls over the disc several times shaping your metal so that it takes the shape of the mandrel. Another common type of metal spinning is known as shear spinning. Here, a part of the metal is finished with just a single pass. The shear spinning roller presses against the metal using a unique technique giving it the desired shape.

Shear forming can also be done on a manual machine. Both the multipass and the shear spinning can be done on the same machine. The difference is the impact that the spinning process will have on the metallurgical metal. Also, both the methods of metal forming have a direct impact on the thickness of the metal. Another essential aspect of this metal forming method is choosing the right metal spinning tools.

If you are planning to go for the manual metal spinning method, then you should aim at choosing the right tools for the job. The primary tool for metal spinning is always referred to as a spoon. There are many other improvised tools that can still be used for the job. Most metal spinning tools are made from hardened steel though there are some that are made from solid brass. In almost all situations, metal spinning tools are designed to spin on the bearing.

This is done with the aim of improving the surface finish of the metal while at the same time increasing the durability of the tool. As the spinning tool rotates, the heat and friction that are generated during the process tend to be greatly minimized. In recent years, CNC machines are replacing most tools for spinning due to their high levels of accuracy and efficiency.

The rollers that are used in the CNC machines come in different diameters. It all depends on the application of the metal to be spun. We are a proud, professional and innovative member of the Winkelmann Group, a global family-owned company founded back in We have been involved in chipless forming of metal parts since the s — always pushing the boundaries to shape the technology and the future.

A team of experts in flowforming technology, we all share the same passion and conviction — and look forward to working with you on your challenging project. Your expert for driveline components. Tougher lighter more compact. Cold forming The benefits for you. Do you need ready-to-install rotationally symmetrical components? We provide a production method that opens up new possibilities for almost any material.