Horizontal machining centres are customisable

Heller's H series of horizontal machining centres are highly modifiable, robust and accurate machines designed to provide the user with the ideal machine capability from a standard range.

Heller Machine Tools launched its H series of horizontal machining centres at the UK's MACH 2008 machine tool exhibition last week.

To be built at Heller's UK plant in Redditch near Birmingham, the H-2000 and H-4000 machining centres are highly modifiable, robust and accurate machines designed to provide the user with the ideal machine capability from a standard range.

The H-2000 and H-4000 are versatile, robust machining centres developed for maximum productivity, provide excellent cutting performance and machine reliability, and offer ease of operation and ease of maintenance.

Based on a modular concept, the H series machines can be customised.

The operating stations of the machines are arranged for convenience and accessibility - for instance, tools can be loaded while the spindle is running.

The reach to the setting station is conveniently short to make workpiece handling easy.

Programming is ithrough either Sinumerik 840D or Fanuc 310i CNC systems.

All function relevant systems and components are installed within quick and easy reach.

Removable guard panels provide access to machine parts at the touch of a hand.

The Z-axis cover and spindle can both be replaced in very short times.

The H-2000 and H-4000 machines can be extended with application-specific packages.

The Speed Pack has been developed to provide the best-possible environment for the high speed machining of light metals.

Two different spindle options, both with HSK 63 spindle taper, are available.

As standard, the machine has a 16,000 rev/min spindle, with a power of 40kW and torque of 96Nm.

Optionally the machine can be fitted with a 24000 rev/min spindle.

Acceleration is 10m/s2 with a maximum traverse rate of 90m/min.

T Heller's latest 2-axis servo- operated automatic tool changer (ATC) ensures shortest tool change times and extremely short chip-to-chip times.

Hydraulic workpiece clamping of 60 or 200 bar is an option, as is a chain type tool magazine of 80/160 pockets or a rack type magazine of 400 pockets.

Tool lengths of up to 450mm and diameters up to 160mm can be accommodated in both the chain-type and rack-type tool magazines.

Fast tool break monitoring with reference measurement, tactile tool measuring, and tool coding are all options.

Efficient coolant disposal is ensured by a paperband filter unit.

* heavy duty cutting - for heavy duty cutting of cast iron and steels, the Power Pack provides a spindle torque of 242Nm, power of 38kW, and a speed of 10,000 rev/min.

Spindle taper is HSK 63, DIN 40 or BT 40.

The dynamically stiff, short design of the spindle and precision cooling ensure high accuracy in cutting, said Heller to manufacturingtalk.

The spindle is available in variants for eco (10,000 rev/min, 17kW, 81Nm), power (10, 000 rev/min, 38kW, 242Nm), speed (16,000 rev/min, 40kW, 96Nm)and high speed cutting (24,000 rev/min, 25kW, 40Nm) with DIN 40, HSK 63 or BT 40 spindle taper.

The proven Heller zero-spindle system ensures fast and cost-effective spindle exchange.

The rigid rotary table has two separate Z-axis guideways giving symmetric force application and allows for the machining of workpieces up to 1000/1400kg.

Reduced swarf accumulating surfaces and steep chutes in both the work area and setting station encourage the free fall of swarf below the spindle and between the rotary table and pallet changer.

A 600mm scraping conveyor covers the complete Z stroke.

An air blast is installed for functional surfaces.

The paperband filter and flushing unit have a 50 bar high pressure pump.

Working envelope is 630/800mm x 630/800mm x 630/800mm.

The H series machines have a very small footprint, with the components and units fully integrated into the machine.

Installation does not require fixed anchoring since the machine is positioned on vibration-damping levelling shoes.

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