Turning is a machining technique that, like milling and drilling, falls into the category of cutting techniques. The workpiece must be clamped into the turning machine, where it rotates about its own axis while the tool removes material from it until the desire shape is achieved. Turning is used primarily to shape round parts. A combination of other cutting methods are often used in addition to turning. Turning is often performed at the beginning of a process chain, since it is used to achieve the part’s general shape.
Turning is often used to shape compact parts. This technique is very costly for individual shims. For large batches, several shims can be clamped into the machine at once, increasing its efficiency.
Areas of application for cutting manufacturing techniques
Cutting methods such as turning are used in the manufacture of precision shims when laser and punching techniques have reached their limits. This is especially true of laminated shim stock. For parts made of laminate that have been bonded across their entire surface, lasering can often not be used because this thermal technique causes the adhesive to melt at the edges of the cut. Punching can be performed on laminated shim stock, but it is not particularly suited to the material. The lifting force presses the individual foil layers together, making them more difficult to separate later. Cutting methods for metal sheet such as drilling, turning, and milling are therefore the preferred techniques for high-quality precision shims made of laminate.