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Turret punching is another method of cutting a item from a raw sheet metal workpiece. Turret punching is done by leading the workpiece over a vertical turning mill, which holds a number of tools. By positioning the workpiece under a pre-set tool, a hole matching the tool is punched. By using different tools and accurate positioning, an item in any outline can be produced. Moreover, turret punching enables you to form a workpiece into any outline, e.g. a recess, shape a louver, etc. Turret punching and laser cutting are complimentary processes, between which the workpiece’s configuration, material and thickness determine the most suitable method of production.

KK Metal does turret punching with an advanced machine with rotatable stations and capacity of 60 different tools, reducing the changeover time and enabling complicated products to be produced, including enhancing details.

More about turret punching

The use of turret punching is especially advantageous, when the item has many holes, i.e. when moulding is necessary (recess, stamping, hinge, etc.) and in the case of some steel materials, which are not suited for laser cutting due to thermal stress, e.g. pre-galvanised steel, zinc and pure copper. Because of the possibility of moulding, turret punching is a very all-round process, which can be preferable to laser cutting in many cases, since the level of the finishing degree is higher. The disadvantage to turret punching is the limitation of material thickness, as punching can only be done in up to 6 mm thickness in steel. In the production of a larger batch of smaller items, it can be an advantage to manufacture one or more tools for a specific item. Hereby, the processing/machining time is significantly reduced. Moreover, since turret punching (and laser cutting) is a process, which only requires sporadic manual operation during production, this method is very cost efficient with larger drafts and several productions of the same workpiece.