Using the machine is simple.

• Slip the sheet in under the clamp-bar
• press the start button to initiate clamping
• pull the handle to form the bend to the desired angle
• return the handle to automatically release the clamping force
• remove the folded sheet, or reposition for another bend

The special centreless compound hinges are distributed along the length of the bending beam allowing bending loads close to where they are generated.

The combined effect of the magnetic clamping with the special centerless hinges means that electrabrake is a very compact, space saving machine with a very high strength-to-weight ratio.

Operator safety is enhanced by a two-handled electrical interlock that ensures a safe pre-clamping force is applied before full clamping occurs.

An easy to read manual explains how to use the machine, as well as how to make various common items.

If a large lift is required, e.g. to allow the insertion of a previously bent work piece, the clamp-bar may be manually lifted to any required height. Conveniently located adjusters at each end of the clamp-bar allow easy adjustment of the bend radius produced in work pieces of various thicknesses. 

If the rated capacity of the electrabrake is exceeded then the clamp-bar simply releases, thus minimising the possibility of damage to the machine. A graduated scale continuously indicates the bend angle.

OPERATING PRINCIPLES

The fundamental principle of the electrabrake machine is that it uses electromagnetic, rather than mechanical, clamping. The machine is basically a long electromagnet with a steel clampbar located above it. In operation, a sheet metal work piece is clamped between the two by a force of many tonnes. A bend is formed by rotating the bending beam which is mounted on special hinges at the front of the machine. This bends the work piece around the front edge of the clamp-bar.

Magnetic clamping means that bending loads are taken right at the point where they are generated; forces do not have to be transferred to support structures at the ends of the machine. This in turn means that the clamping member does not need any structural bulk and hence can be made much more compact and less hindering. (The thickness of the clampbar is determined only by its requirement to carry sufficient magnetic flux and not by structural considerations at all.)

All electrabrake machines come with a detailed manual which covers how to use the machines as well as how to make various common items.