Vertical multi-task machines

The primary benefit of a multi-task machine is that you can combine several cutting processes and set-ups in one single machine, reducing component set-ups and lead times. In a vertical multi-task machine, the component is rotating around the vertical axis.

Vertical multi-task machine configuration

The vertical mill/turn machine has the component rotating around the vertical axis. The components are normally larger in diameter than for a horizontal multi-task machines and support via a steady rest, tailstock or sub-spindle is not required.

This machine grouping has evolved from 5-axis machining centers with the addition of turning capability through increasing the rpm capability of the C-axis (turning table) and adopting the spindle for stationary operations. Combining all operations on one machine, thereby reducing component set-ups adds, to its 5-axis machining capabilities.

To succeed at combining multiple and complex applications, there are some key options that should be considered.

Spindle

The mix of static and rotating tools requires the broadest spindle capability with a combination of a traditional machining center and a lathe. High bending stiffness, torque transmission and accurate tool center position are why Coromant Capto^® is the most suitable interface for this machine concept.

Longer tool lengths will be needed for any internal operations, making C8 (80 mm (3.150 inch) flange diameter) or C10 (100 mm (3.937 inch) flange diameter) the best choice for larger machines.

In addition to providing the best stability, Coromant Capto^® allows for the shortest gauge line and lowest tooling cost by removing the need for machine interface adapters.

Read more about how to choose a spindle

Magazine

A multi-task machine can replace a lathe and a machining center and produce various components. It is important to allow ample space for tools in the magazine for all operations and components, to support a quick changeover from one job to another without the need to change tools.

Pallet

By using a pallet, the component can be set up in the fixture while the machine is still producing. This provides excellent machine utilization compared to setting up directly in the machine.

Right-angle head adapter

To be able to carry out internal milling operations, the spindle nose adaption for supports and location is needed to allow the main spindle to drive the auxiliary head. This head can be tool changed and stored in the magazine.

Interpolation turning

This machine option allows for production of a symmetrical feature on a non-symmetrical component and reduces the need for engineered tools and feed-out heads.

Read more about interpolation turning

Multi-tool position

Multi-tool position – using turning holders with multiple cutting edges has the double advantage of saving indexing time as well as magazine space. Spindle orientation, measuring and offsets of multiple positions are needed in the control.

High-pressure pump

Most machines offer a high-pressure coolant capability around 70 bar (1015 psi).Read more about coolant aspects

Multifunctional tools

The most important benefit for multi-task machines is the possibility to combine all operations on a component in one machine. However, drawbacks include increased tool indexing time compared to a turning center, accessibility due to the B-axis head and compromised magazine space.

Multifunctional tools are developed for multi-task machines that address these issues to ensure that machine capabilities are maximized.