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Y-axis milling and powerful driven tools on the new CMZ TA lathes
Y-axis milling and powerful driven tools on the new CMZ TA lathes
Y-axis milling and powerful driven tools on the new CMZ TA lathes
Y-axis milling and powerful driven tools on the new CMZ TA lathes

Y-axis milling and powerful driven tools on the new CMZ TA lathes

Added to MTDCNC by CMZ UK Ltd on 04 September 2013

The new TA range of lathes from CMZ has been designed to meet the widest possible range of customer requirements on a small machine – including Y-axis milling, powerful driven tools, as well as a wide choice of bed lengths and bar capacities.

The machines are all rigidly built for accuracy and durability, with box-section guideways on the X-, Y- and Z-axes and an ultra-rigid Y-axis design. Although ground box-section guideways cost more than the bolted-on linear guides used on lower quality machines, they are much more rigid and a prerequisite for applications such as hard turning.

The range covers five possible machine configurations, including a standard two-axis, turning only lathe, a turning and milling version, a turning and milling version with Y-axis, a subspindle version and, at the top of the range, a Y-axis turning and milling machine with subspindle.

Except for the subspindle versions, all machines are fitted with a programmable servo-driven tailstock for speed and versatility.

The range covers bar sizes from 52mm to 77mm, and every machine is available in three bed lengths, with Z-axis options of 400mm, 640mm and 1,100mm. The ability to combine a subspindle with a 1,100mm Z-axis is unusual for this type of machine and makes the TA an attractive option for the accurate machining of long shafts.

A key feature of the TA range is the speed and power of the driven tools. These offer 12,000 rpm as standard – about twice the speed of competitive machines. This high speed is combined with exceptional power, with 11kW available to deliver up to 75Nm of torque. Each of the 12 turret stations can accommodate driven tools.

In addition to the box section construction and an integrated main spindle motor, a number of innovative design features give the TA lathes the rigidity to exploit this power to its full potential.
The movement of the Y-axis, for example, is based on a wedge design that moves in and out to move the turret up and down. This is much stronger than a conventional Y-axis design and is built for strength and rigidity.

The driven tool motor is integrated into the turret, perpendicular to the turret disk, with spiral bevel gears providing a direct connection to the tools.

For thermal stability, both main and subspindle motors, the driven tool motor, the headstock bearings and the axis motor couplings are all cooled with refrigerated oil.

The driven tool holders are the same as on CMZ’s TC and TL range machines, so existing customers can use the same tools. In addition, CMZ has developed new driven tool-holders that can run up to 12,000 rpm and have through-tool coolant at up to 70bar, giving excellent deep hole drilling capability.

All the machines in the range can be fitted with a Renishaw tool setting probe. High-quality SMW Autoblok chucks are standard. Alternative  chucks, collet chucks and mandrels are available as standard equipment.

As with all of CMZ’s lathes, a gantry loading system is available as an option.

For customers who don’t think their products require such a high specification machine, CMZ has for the first time introduced a lower cost version, the TA20 eco. This has a Fanuc 0 Series control instead of the standard Fanuc 30 Series control and has a belt-driven spindle rather than the standard integrated spindle motor.

Commenting on the launch of the CMZ TA range, Keith Howell, Managing Director of CMZ UK, said: 'This is a very capable range of high-specification lathes. And with over 70 different versions to choose from, you can effectively buy a bespoke machine from a standard range.'


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