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28.03.2008
A CNC multi-axis turning centre has two spindles, two turrets and two Y-axis or, oprtionally, can be supplied with three turrets and three Y-axis
Mori Seiki will be showing its NZ series CNC multi-axis turning centre at the UK's MACH 2008 machine tool exhibition. The company will be exhibiting the NZ2000 T2Y2, which has two spindles, two turrets and two Y-axis. Optionally, the machine can have three turrets and three Y-axis. Mori Seiki told manufacturingtalk that the arrangement gives users the ability to completely finish components in one clamping.
It removes unnecessary part handling, automating the process and eliminating errors associated with resetting for subsequent operations.
All of the turrets use Mori Seiki's BMTTM (Built-in Motor Turret) technology, which minimises vibration and thermal variation and increases the accuracy and power of driven tools.
The 7.5kW built-in motor can run at up to 12,000 rev/min and, as each turret has capacity for 16 tools, up to 48 driven tools can be loaded for maximum flexibility.
The second, lower turret incorporates ORCTM (Octagonal Ram Construction).
The symmetrical shape of the ram provides high levels of rigidity and damping combined with thermal stability, as the four diagonal guideways cancel out heat related displacement.
By giving superior performance when compared to round or square guides, ORCTM adds to the stability of the machine at high speeds.
The octagonal guide itself is protected by a round moveable cover.
Designed without any gaps, the cover reduces the accumulation of chips around the ram and prevents potential damage caused by their ingress.
The spindle motor provides up to 25kW of power and uses integral cooling systems to maintain performance and accuracy.
Additionally, the turrets can all move simultaneously, speeding up machining by performing several operations at the same time.
To manage the complexity of these operations the NZ is fitted with MAPPS III, Mori Seiki's latest control system, which provides interactive programming and real - time collision control, checking for interference between the tools, the turrets and spindles and the machine tool itself.
* Mori Seiki UK at MACH 2008, NEC, Birmingham, UK, April 21-25, Hall 5, Stand 5280.
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