Sandvik Coromant has unveiled a new range of CoroTurn Prime multitask and axial-type toolholders to help machine shops implement the new PrimeTurning methodology, which enables turning in all directions. The introductions allow users to maximize the benefits of PrimeTurning on multitask turn-mill centers and vertical turning lathes (VTLs).
Both CoroTurn Prime A-type and B-type inserts can be mounted together on Twin toolholders, allowing manufacturers to undertake roughing with a B-type insert before switching to finishing with an A-type insert, for example.
‟Modern multitask machines are intended for the complete machining of components but typically have a slow tool changing time, often around 15–20 seconds,” says Håkan Ericksson, product manager general turning at Sandvik Coromant. ‟As a result, the new Twin holder will save customers a considerable amount of time when changing tools.”
As a further advantage, B-axis machining on multitask machines permits the operator to program the angle of the tool in precise increments. When the machine cuts using its B-axis, more accessibility is created using neutral holders. In combination with streamlined operations, this accessibility delivers the potential for huge time savings and productivity increases to help manufacturers reduce tooling inventories and achieve competitive gains.
Six new multitask toolholders are being introduced, which are mounted at a 45° angle for B-axis machining, and can be used with either CoroTurn Prime A-type or B-type inserts. Options for multitask machines include four tool holders (one-insert only) and two Twin toolholders (two inserts). The CoroTurn Prime Twin toolholder is available for use with Coromant Capto C5 – C8 size.
A range of axial tool holders for vertical turning lathes is also part of the range, which means that Sandvik Coromant now has a complete offer for PrimeTurning: axial, radial, and multitask toolholders. In total, eight dedicated tool holders for axial mounting are being launched. This type of tool holder is compatible with most types of vertical lathes and available in Coromant Capto for use with either CoroTurn Prime A-type or B-type inserts.
Although PrimeTurning is applicable to the entire general turning area, machine shops with large batch sizes (automotive) are set to benefit most, as will those machining large components (aerospace) where there is a need to reduce tool changes, setup time and production stops.
Ultimately, the all-directional PrimeTurning method and CoroTurn Prime tools will ensure that manufacturers can complete their turning operations in a much more efficient way. Compared with conventional turning, a 50 to 80 percent increase in productivity, along with 1.5 to 2 times more tool life, can be achieved.
Related Glossary Terms
Cone-shaped pins that support a workpiece by one or two ends during machining. The centers fit into holes drilled in the workpiece ends. Centers that turn with the workpiece are called “live” centers; those that do not are called “dead” centers.
Secures a cutting tool during a machining operation. Basic types include block, cartridge, chuck, collet, fixed, modular, quick-change and rotating.
Workpiece is held in a chuck, mounted on a face plate or secured between centers and rotated while a cutting tool, normally a single-point tool, is fed into it along its periphery or across its end or face. Takes the form of straight turning (cutting along the periphery of the workpiece); taper turning (creating a taper); step turning (turning different-size diameters on the same work); chamfering (beveling an edge or shoulder); facing (cutting on an end); turning threads (usually external but can be internal); roughing (high-volume metal removal); and finishing (final light cuts). Performed on lathes, turning centers, chucking machines, automatic screw machines and similar machines.