Polygon turning is a process through which flat planes are obtained on the piece through synchronized rotation of the spindle and the live tool. Polygon turning can be performed on our CMZ CNC lathes. It is an alternative process to milling each surface individually. It is more similar to lathing than milling.
A special tool is necessary to perform this process. It is a cartridge with various cutting inserts. This cartridge is mounted on an arbour with a keyway, which is then mounted on a CMZ live axial toolholder. CMZ manufactures live axial toolholders for spindle and subspindle of up to 12,000 rpm and with internal cooling (TL20/10400/06, TL20/10400/08,). There are also specific toolholders for polygon turning in which the cartridge is directly mounted, without the need to manufacture an arbour.
The relevance of the number of inserts on this cartridge together with the ratio of speeds between spindle and live tool is that it will create a different number of planes on the piece. The process can be carried out both for the main spindle and the subspindle.
The planes created using polygonal cutting are large radius curves and for this reason it is not recommended for milling that has strict flatness tolerances. This process is generally used for hexagonal bolt heads and flat planes for clamping with a fixed wrench.
The polygon turning option is standard for CMZ's whole range of CNC lathes with motorized tools. It is not necessary for the lathes to have a Y axis.
This part has been made with TA series lathe, a CMZ TA-25-YS-640.
CNC Lathes | TA Z400
Machines with living tool with 12,000 rpm. Great milling capacity. Never was machining by chip removal so simple.
CNC Lathes | TA Z640
Discover the high performance and productivity of this range of models. Accuracy and reliability. A machine at the service of the operator.
CNC Lathes | TA Z1100
Characterized by high manufacturing quality. Designed with the aim of perfecting high precision machining to meet the demands of customers
Gear Hobbing on a CNC lathe
The geometry of the gear in the gear hobbing process is obtained by the synchronised movement between the spindle and the live tool. The limit to manufacture gears in a CMZ CNC lathe is around the hob tool being able to produce the required profile but for occasional machining. Bigger gears require…
Do you need help with an application?
Our applications department can analyse in detail the process to be carried out and offer you a part study helping you to reduce cycle times.