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New machine tool from Tornos that bridges the gap between single-spindle and multi-spindle lathe
New machine tool from Tornos that bridges the gap between single-spindle and multi-spindle lathe

New machine tool from Tornos that bridges the gap between single-spindle and multi-spindle lathe

Added to MTDCNC by Tornos Technologies UK Ltd on 30 July 2016

With the new MultiSwiss line of products, Tornos offers a machine series that bridges the gap between single-spindle and multi-spindle lathes.

The flexibility and high-precision machining of single-spindle machines forms a congenial symbiosis with the economic production cycle of multi-spindle automatic lathes. Easy access to the machining zone, versatile tooling configurations and an optional Y-axis that enables the range of parts to be machined to be significantly be expanded. 

With the new MultiSwiss 6X14, the machine structure is split into two segments: the machining section and the supply and disposal section (Container). Both elements are located on anti-vibration mountings and the machine bed and counter-spindle unit are made from grey cast iron. The container is permanently attached to the machine body, but may be separated for transport purposes. It includes a bar feeder, the coolant supply and recycling system and also the chip disposal unit. The electric control cabinet and all further necessary supply units are also mounted there. This results in a virtual "all-in-one-concept” taking up minimal space in the work shop for the customer with its overall small footprint.

The core of the machine is the barrel with individual headstocks. The hydrostatic bearing of the central barrel and also of the individual spindles, offer advantages with regards to the damping behaviour of the complete system. Tool life and workpiece quality are also improved; so Tornos comes closer to its aim of saving post machining grinding operations for the customer. The barrel rotates and is positioned using a torque motor that facilitates short indexing times thanks to the inherent dynamics. 

On the barrel, 6 spindles each have their own synchronous drive motor that accelerates to a maximum 8,000rpm within one second and provide C axis capability in all positions. The spindles are totally independent of each other and provided with X axis movement by 6 independent slide units. Two slides on positions 3 and 4 may also integrate an optional Y axis, allowing for off centre operations or multiple tools. The stroke of the spindles in the Z axis amounts to 50mm, which allows when combined with the other axis, the machine to operate like a single-spindle system to achieve simple and complex workpiece features. After the workpiece has been cut-off and taken up by the pick-off/counter-spindle, the rear features may then be machined using X and Z axis movements. With the counter-spindle moving on an independent slide (Z direction) it can also be used to hold the bar when feeding material for the next cycle; this allows for very accurate bar positioning and thus for optimally utilising the material with very little bar waste. 

For unloading the parts, Tornos offers various options - removal via a chute, removal by robot or discharge onto a conveyor belt. For the machining process, the cutting oil used is also used for the hydrostatic bearings. In this way, the oil from this open circuit is drained from the machine together with that used in the cutting process, so that no separate circuit is required. The only difference is the oil for the hydrostatic circuit is finely filtered (5 to 6µm) when being recycled and selectively fed back to the bearing cavity. 

Modular multi-tool concept

Up to 18 different tool modules may be used on the linear slides of the 7 machining X-axes and the two Y axes. In one module, up to 3 tools can work to produce features such as turning, face drilling and live tool work. To this end, Tornos can draw from a wide range of different application options.  


As a control unit, the Fanuc 31i is used. Programming can be made using the well-known TB-DECO software. In addition, various macros for specific machining processes are available. Moreover, Tornos now offers the TISIS Machine Programming and Communication software that also supports the communication among all Tornos machines used in the facility, as well as programming and CAM functions.

The software knows the available functions of all Tornos machines in the facility, helps to program ISO code, executes process checks and outputs the programs to the machine control. All workpiece documents are archived allowing the insertion of related information including photos from smart phones. During production, the operating data as demanded by Industry 4.0 and also the malfunctions and axis loads can all be retrieved via networked PCs or smart phone. The machine status is signalled by the colour of the illuminated Tornos logo attached to the front side of the machine. For further details on the incredible MultiSwiss Series, contact Tornos UK.

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