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Hartford redesign gives Super-HCMC machines the edge
Hartford redesign gives Super-HCMC machines the edge

Hartford redesign gives Super-HCMC machines the edge

Added to MTDCNC by TW Ward CNC Machinery Ltd on 18 September 2014

Radical structural design enhancements and the introduction of high-performance spindle options have improved the machining effectiveness and efficiency of the Hartford range of Super-HCMC heavy-duty vertical machining centres available from exclusive UK distributor, T W Ward CNC Machinery (Ward CNC).

With a redesigned, lower weight head resulting in increased machining rigidity and higher positional accuracy, plus reduced acceleration stresses – the head provides additional support for the spindle, to absorb cutting forces and minimise deflection - the open-fronted Super-HCMC range also now features a redesigned and wider column base, again to ensure higher-performance stability under heavy cutting conditions.

All design changes are underpinned by Hartford’s regime of ensuring an ‘optimum force flow structure’ where machining forces are redirected to reduce vibration and therefore guarantee accuracy, in tandem with the company’s renowned construction regimes based on heavily ribbed cast iron. Finite element analysis is then applied to ensure optimum structural design and performance.

In combination with a spindle that utilises FAG bearings to deliver a run out of just 0.005 mm per 300 mm – and an innovative gearing design that permits both heavy-duty and light cutting - the result is a range of machines unrivalled for their ability for single set-up ‘done in one’ machining using both high removal rates as well as fine finishing routines.

Within the range, table capacities extend from 1,450 mm by 800 mm to 2,000 mm by 920 mm, able to accommodate loads of 1,600 kgs to 3,000 kgs. X, Y and Z axes travels are from 1,300 mm to 1,800 mm (X), 800 mm to 920 mm (Y) and 660 mm to 700 mm/optionally 820 mm (Z).

With 15/26 kW main spindles, Super-HCMC machines can reach 10,000 revs/min, and traverse rate is 15-16 m/min in X, Y and Z. Tool capacity extends from 20 to 32.

The machines can be supplied with Fanuc, Heidenhain or Mitsubishi CNC systems, featuring:

- Short message sender – ensuring that users are immediately aware of any issues;
- Servo overload detection – to avoid potential collisions; and
- A thread milling macro for the production of wide pitch threads.

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