A CNC turning centre provides potential users with multiple choices to configure a machine to their precise needs. Launched by DMG Mori at the EMO Milano exhibition in October, the NZ platform is available as a DUE, TRE or QUATTRO model, having two, three or four turrets respectively. Each also has an 80 mm Y axis and the possibility of having a -10 to +100° B axis. The built-in 16 kW/12,000 rpm/24 Nm motor has either 12 live stations for VDI 30 tools or 16 stations for VDI 25 tools.

DMG Mori’s new machine is available in two bed sizes, a short version for workpieces up to 740 mm long and a larger version for workpieces to a maximum length of 1290 mm. A magazine for feeding bar stock up to 65 mm diameter is available, with the potential for the chucking of billets up to 120 mm diameter. Even with a 4 m bar feed, only 17.8 sq m of shop floor space is required.

Suitable for use on the long-bed lathe, but also possible on the short-bed version, an optional, double-sided, twin spindle can be mounted in the Z axis between the 5000 rpm (optionally 7000 rpm) main and counter spindles. Able to accept up to 65 mm diameter workpieces, it effectively divides the machine into two twin-spindle work areas and may be used for turning at up to 4000 rpm. When machining longer workpieces, it functions as a hydraulic steady rest or a Swiss-type unit with a 5000 rpm rotating guide bush.

A symmetrical, thermally stable bed ensures stability and precision during machining. Other merits of the machine include ergonomic accessibility to the working area and efficient chip evacuation.

For further information
www.dmgmori.com

Building on the strengths of previous generations of Miyano fixed-head turn-mill centres, the BNA-42SY is Citizen Machinery’s latest addition to the range. The CNC lathe is the first BNA model to have a 12-station turret giving ±35 mm of Y-axis movement, all tool positions now being live, and a new design that lends itself to easy automation.

Compared with current BNA models, machining efficiency has been upgraded by more powerful spindle motors, which are rated at 7.5/5.5 kW (15min/cont) for the 6000 rpm main spindle and 5.5/3.7 kW for the 5000 rpm sub-spindle. Acceleration and deceleration are quicker on both spindles, improving productivity further by minimising idle times.

The machine’s rigid bed, the weight of which is now 1823 kg, brings thermal control advantages and more capacity to house a larger coolant tank. Notably, the base casting has been prepared with space at the right-hand side for robotic load/unload equipment. If a user intends to take advantage of automation, the machine is available with a swarf conveyor that exits to the rear as an option. Users may deploy the automation solely for unloading components that have been turn-milled from bar stock up to 42 mm diameter, either directly from a spindle or via a parts catcher and conveyor. Alternatively, or in addition, it may load and unload billets or near net shape workpieces like castings or forgings up to 135 mm in diameter.

Mounting points have been included to provide an option to add an overhead gantry if only chucking is to be carried out, in which case a raw material stocker can be positioned to the left of the machine in place of the bar magazine.

For further information
www.citizenmachinery.co.uk

Japanese machine tool manufacturer Okuma has incorporated a robotic arm inside its CNC turning centres for the automated production of shaft- and chuck-type components. The sole UK and Ireland agent for Okuma is NCMT.

One of the first Okuma lathes to benefit from an internal ‘Armroid’ (Arm Robot Intelligent Design) workpiece load/unload system is the LB 3000 EX II, one of which is available for demonstration in NCMT’s Coventry showroom.

Three different end-of-arm effectors are available for performing different tasks. One is for blasting air or coolant within the cutting zone. This effector can be programmed to follow the cutting tool for breaking up stringy swarf or to clean down the whole working area, greatly improving chip management.

A roller end effector provides support under a shaft component during cutting to minimise chatter.

In combination with a workpiece stacker, the third end effector is a two-finger gripper for automatically holding shaft-type workpieces around their circumference for loading and unloading, with total weight capacity being 5 kg. All three end effectors are stored within the machine for automatic exchange by the robot.

It is possible to integrate a longer, more powerful Armroid into a second Okuma turning centre, a Multus B250II multi-tasking lathe. The robot arm handles workpieces up to 10 kg and possesses a fourth type of end effector with a three-jaw gripper for holding billets around their end faces.

Armroid systems are suitable for high mix, small batch work. The extended periods of unattended running release the operator to carry out duties in other parts of the factory. However, the cells are not for the lights-out production of large quantities of the same part due to the limited number of workpieces that the stocker can accommodate.

For further information
www.ncmt.co.uk

At the EMO Milano exhibition in October, Tornos took the opportunity to launch its new range of Swiss DT machines. Designed to evolve with the needs of manufacturers, the new Swiss DT range meets the diverse requirements associated with machining long and short parts from 2 to 38 mm diameter bar stock.

Thanks to Tornos’ 130 years of experience in bar turning, the company says that the latest Swiss DT range is an affordable solution that offers the market’s best value. The machine is based on relatively traditional kinematics with five linear axes. Machine shops can produce highly complex parts by adding a range of options compatible with all Tornos machines.

Special operations are the forte of Swiss DT machines. For example, users can produce medical threads by adding a thread-whirling device, making it is possible to create a polyaxial screw for spinal surgery on a Swiss DT 26. Polygon milling or gear hobbing is a further possibility.
The Swiss DT range was just one of the highlights of the Tornos stand at EMO Milano. For example, the SwissDECO 36 now has a new option for machining bars up to 42 mm in diameter.

Since its launch, Tornos says that the SwissDECO has become the reference for bar-turning machines producing large diameter, complex parts. According to the company, its power and infinite potential have enabled the production of parts that have been impossible to machine until now. Fast and precise, this machine is well suited to the production of highly complex parts. Today, a new 42 mm option is added to the broad range of options already offered by the SwissDECO.

For further information
www.tornos.com

Founded in 1955, Skelmersdale-based Kirkham Engineering has established a reputation as a specialist in the production of repetition turned parts on CNC fixed-head and sliding-head machines. With decades of experience and a machine inventory supplied by a host of manufacturers down the generations, the latest machine to be installed is a Nakamura Tome AS-200L turning centre from the Engineering Technology Group (ETG).

The Nakamura AS-200-LMYSF follows a previous AS-200L acquisition from ETG that arrived in 2017.

Financial director Barry Lynam says: “The AS-200-LMYSF can be set-up extremely quickly and this gives us flexibility for small batch runs of fast turnaround parts. It can respond far quicker than our more complex machines. The machine has a large work envelope in a small footprint and is extremely robust, which is perfect for heavy-duty cutting.”

Supplied as a complete package by ETG, the AS-200-LMYSF arrived with tooling, a Hydrafeed MSV-65 bar feed (plus BSU bar support unit to give 1.5 m) and a swarf conveyor, making the machine ready-to-run on the day it arrived. The machine has a maximum turning diameter of 280 mm with a maximum through-spindle bar diameter of 65 mm.

“We already have highly capable twin-spindle and twin-turret machines, but we wanted something that had a smaller footprint and was faster to program and get up and running – the AS-200L fitted the bill,” says Lynam. “Unlike the larger machines, the AS-200-LMYSF is the latest-generation machine with the new FANUC CNC and NT Machine Simulation and NT Collision Guard from Nakamura Tome. This allows us to rapidly program and simulate our components, and run the first part with confidence and speed.”

For further information
www.engtechgroup.com