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Magnetic clamping delivers die change benefits


Roemheld’s M-TECS magnetic clamping plates provide a wide range of benefits compared with traditional mechanical, hydraulic or electromechanical systems. The M-TECS magnetic clamping system can reduce set-up and changoever times to as little as 2-3 seconds and dies of all sizes can be installed with a single clamp.

Roemheld's magnetic clamping system has no moving parts and is basically maintenance-free. The full metal clamping surface of the elements enables users to avoid expensive standardisation of die sizes and clamping edge heights. The components are suitable for vertical and horizontal use in machines and can be easily and quickly retrofitted onto most presses and punches. The plate thickness ranges from 47mm to 85mm (with an integral heating system) and the sizes and geometry of shapes can designed to meet a customer’s specific requirements.

As Roemheld magnetic clamping technology is based on the principle of a permanent electric magnet it is safe even in the event of a power outage and, with a penetration depth of just 15 to 20mm, does not impact on production. Power is required for only 1 - 2 seconds to magnetise the system at the start. During operation, the system is independent of the power supply and power is only required to unclamp the die.

Effective, full-surface magnetic forces of between 2 and 12 kg/cm² and clamping forces of between 500 and 2,000 kN act on the plates. The square pole magnets of the Roemheld plates ensure that even small dies are clamped without auxiliary devices. In addition, the full-surface clamping force ensures that the top and bottom die halves close reliably during the production process with no deformation, true to position and in parallel. This helps to reduce both wear and maintenance costs.

An additional control system permanently monitors the magnetic power, die position and temperature throughout the working process and the machine is brought to a standstill by even the slightest movement of one of the die halves.

Bill Neal, Joint Managing Director of Roemheld (UK) Limited, said: “In general terms, magnetic clamping systems are the best solution whenever frequent die changes are required, downtimes need to be reduced or it would be impossible or too expensive to standardise clamping edge heights and die sizes. This technology is also suitable for large die sizes and heavy weights, which require significant levels of power and a great deal of time to be clamped, for instance on large presses and punches in sheet metal forming. In these applications, magnetic clamping technology helps to cut unproductive set-up times.“

To find out more about Roemheld’s full range of magnetic clamping, workholding and materials handling solutions’, go to www.roemheld.co.uk or telephone 01462 459052.