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Brixworth Engineering has supplied a special-purpose Benco rotator positioner for use in the cold mill of an international steelworks.

The product comprises a headstock unit fixed to parallel floor-mounted rails.

A tailstock is also supplied that can be moved and clamped at any position along the rails.

This provides full adjustment to accommodate varying lengths of workpieces up to a maximum of 3.5m.

The headstock height is fixed and centred to enable workpieces from 40 to 500mm diameter, with loadings up to 1,000kg to be attached.

In the event that loads can be clamped at one end only, an adjustable steady unit is provided to supply the necessary load support at the unclamped end.

This steady is also rail mounted and can be adjusted for lateral position, as well as height of support, utilising a scissor-lift mechanism with free rotating rollers fitted at the point of load contact.

The maximum designed loading for the steady is 750kg.

A Fanuc spindle drive motor provides the rotational force through a Benco gear box with a speed range of 0.125 to 16rpm.

This equates to a surface speed rotation on the workpiece of 0.2 to 2m/min, which is the design speed required to accommodate the welding and plasma spraying operations carried out.

Brixworth Engineering

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