The ideal spindle for gantry machine

Same concept, new design,

EUROMA motorized spindles equipped with an automatic tool change system have a new look and are dedicated mostly to the gantry machine sector.

Mandrino motorizzato

To be precise, we are talking about sheet metal working machines, which is plasma cutting, laser cutting and oxy-fuel cutting.

Besides sheet metal laser cutting, obtained with the above mentioned, performing mechanical precision operations – such as drilling and threading – within the process is now an usual thing. Nowadays, it would be unthinkable to bring the chip removalprocess out of the machine and move the piece in several stages. For most of the world’s largest gantry machine manufacturers, the old concept of the revolver head, currently limited in its power and torque transmitted capabilities, is being abandoned to leave more and more space for the use of the motorized spindles, CNC feed with automatic tool change system and tool rack. This concept is very similar to that of machining centers.

In fact, EUROMA motorized spindles offer great strength, reliability and precision. Furthermore, the new design, developed especially for the needs of this type of machine, further enhances its features.

What has most significantly improved is the dimensional development of the pneumatic tool change system which is extremely compact if compared with the previous one, with a diameter of only 150 mm. The single-acting cylinder generates an unlocking thrust to the plate springs of 14000N in the ISO40 version, while for mechanical retention the pulling force reaches 18000N thanks to the thrust multiplier.

Mandrino motorizzatoThe tool change system is also equipped with 5 sensors that manage spindle safety logic system. In fact, it’s possible to know the position of the pull stud thanks to the three sensors mounted on the back of the unit.

There’s also a fourth sensor mounted on the rear part of the cylinder, which reads the actual return, thus ensuring the mechanical pull of the springs. The fifth sensor is mounted directly on the shaft and reads its rotation to
manage the timing of the two ISO dowels.

The extended spindle shaft makes it possible to reduce the working strokes to a minimum, thus avoiding any space problem usually due to the transmission casings and the motors that are applied. Nowadays, the range has 3 spindle sizes (DX28 – DX38 – DX58) with the possibility to choose between ISO40 and ISO50 shank.

The spindles with this new system are perfectly suitable with the EX model feed slides, which can be used to perform the working strokes with ball screw and CNC motor. If you need more information, please do not hesitate to contact us!

5 Jul 2020

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