Technical specifications and layout HS664

Technical solutions

All linear movements are performed by the spindle head.
The fixed bed structure ensures:

• stability, independently of the weight of the workpiece being
  machined;
• optimum visibility of the part being machined;
• wide range of customization;
• reduction of overall machine tool dimensions.

The cast iron bed does not require dedicated foundations, while the moving structures, made of steel, provide the best mass-rigidity ratio in order to guarantee high dynamic performance.

Linear axes

Roller bearings on linear axis allow:

• high feeds
• low friction, reducing machine structure heating
• no backlash.

The axis drives use digital technology with the following advantages:

• optimization of machine tool dynamic behaviour;
• improved machining resolution and accuracy.

Axis movement is driven by recirculating ball screws and brushless motors. The guides and recirculating ball screws are automatically grease lubricated. The linear axis feedback take place through optical scale transducers.

Spindles

In order to provide the best solution for specific requirements, spindles with a power of up to 25.8 kW and a maximum speed of 36,000 1/min are available. All spindles have ceramic ball bearings and are refrigerated by the circulation of coolant at a controlled temperature. The vectorial control method used for the electrospindle drives ensures optimum behaviour, even at low rpm.

V Version

The HS664 V version has a fixed worktable quite larger than the work area. The table is made of cast iron with T slots for easy clamping of the workpiece, centering and automatic locking systems; this also facilitates the attachment of additional rotary tables with a 4th axis and tilting tables with 4th and 5th axes.

RT Version

The HS664 RT version, equipped with its integrated rototilting worktable with a faceplate of up to 400 mm in diameter, is the solution for 5 axis simultaneous complex machining where heavy stock removal is required. This version is suitable both for the moulds and dies sector and for the aeronautics industry. The cast iron worktable is carefully integrated in the bed to allow for the machining of diameter up to 570 mm workpieces and to ensure swarf disposal while easing maintenance. The 4th and 5th axes are fitted with direct transducers and can be operated either in continuous interpolation or clamped by hydraulically operated brakes.

HS664RT

Automatic tool change

A standard chain housing 20 tools is mounted in the X axis slide and protected from swarf and coolant. The tool change can be extended up to 42 positions.

Work space

The work space has been designed to allow for full containment of the swarf and ease of disposal. The cover can easily be opened to enable the workpiece and equipment to be loaded from above with a bridge crane.

Tool presetting

Automatic presetting of the tool length on the machine simplifies tooling procedures for new machining operations or when replacing worn tools. Indispensable for unmanned machining operations, tool presetting is available in a digital probe version or with a focused laser probe. In addition to checking the tool length, the focused laser system also checks the tool diameter and shape.
Also available, measure and verification of special tools:

• multiple cutting areas;
• angular heads;
• advanced ID Chips management.

Tool lubrication / cooling and swarf conveyor

Minimum lubrication and tool lubrication / cooling using soluble oils are supplied as standard together with a swarf collection tank on wheels. The swarf conveyor is the scraper type. Adequate jets of coolant ensure that the work area is kept clean even in the heaviest stock removal conditions. The conveyor is fitted with self-cleaning filters and with a pump for the external lubrication / cooling of the tool. The 25.8 kW spindle can have an high pressure (50 bar) coolant through the shaft.

Dust suction unit

Essential when machining graphite or resin, the high capacity suction device is mounted externally to the machine tool. It is equipped with selfcleaning filters with a high degree of filtration that are able to operate in the presence of explosive dust. The total absence of any moving parts below the work surface guarantees the maximum efficiency of use of the HS664 in these kinds of applications.

Automatic workpiece magazine

The automatic magazine loader, for 8 or 16 workpieces, significantly extends machine tool autonomy. Copper or graphite electrodes, aluminium parts, steel blocks or models can easily be milled in unmanned machining mode. The magazines can be interfaced both with the 3 axis versions and the 5 axis versions. They are mounted on guides to give operator access to the front part of the machine tool and to facilitate the fine-tuning of programs.