Attention to detail

Technical features

Bent bars in prestressed steel are a certified component, insofar as they must be used in conditions requiring extreme safety and reliability. Therefore, there is no room for compromise on the quality of the finish, precision and repeatability of machining. A measuring system checks the length of the bar before machining, tensioning it to avoid pointless tool wear and time wastage. Non-conforming bars are in fact shifted without being machined in the event their measured length falls outside the set tolerance.

Undisputed quality

The chamfering, turning, and threading heads are supplied by a leading world manufacturer and machine both ends of the bar simultaneously in two successive stages. They slide on slides driven by brushless motors, allowing the stroke of the units to be adapted to obtain the desired length, while also correcting any errors detected by the length control.

Bending and unloading unit

The line can process straight bars, which are unloaded into a dedicated chute, or produce bent rods. In the latter case, two bars are simultaneously aligned and a gripper shifts them up to the bending unit, which bends them at 180°.

A one-for-all solution

Ralc Italia has been developing the bar line for decades, ultimately achieving the current level of perfection allowing excellent results with particularly complex machining.

Conveyor with gripper

The gripper transfer system is the ideal solution for transferring bars with length greater than 3,200mm.

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Hydraulic clamps

For the efficient blocking of the piece during the processing; combined with the ISO40 machining heads by leading world manufacturers, they constitute a further guarantee of precision and repeatability.

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Thread diameter control

The machine is equipped with two measuring stations (one for each end), which check the diameter of the thread in multiple points. The check is made on 100% of the bars, and also allows the plate and roll wear to be checked.

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Chips conveyor

For the evacuation of chips, a suitably sized evacuator is used, complete with a pump to ensure the proper lubrication and cooling of the tools.

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Non-conforming piece chute

A chute located before the piece collection system and after the thread diameter control collects all processing waste (non-conforming length or diameter).

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Lubrication

The lubrication is carefully dosed and directed to optimise tool wear during machining, but without contaminating the bar.

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Example processes

The line produces bars with diameter from 7 to 12.5mm, with maximum thread length 90mm.

Examples of chamfered, threaded and curved rods 1

The line produces bars with diameter from 7 to 12.5mm, with maximum thread length 90mm.

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Examples of chamfered, threaded and curved rods 2

The line produces bars with diameter from 7 to 12.5mm, with maximum thread length 90mm.

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Examples of chamfered, threaded and curved rods 3

The line produces bars with diameter from 7 to 12.5mm, with maximum thread length 90mm.

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Examples of chamfered, threaded and curved rods 4

The line produces bars with diameter from 7 to 12.5mm, with maximum thread length 90mm.

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