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A Galil DMC-2143 four-axis motion controller guides the precision movements of a machine developed by Artesa that is capable of mimicking the craftsmanship of hand engraving.

Leonardo Di Benedetto, the Artesa machine developer, said: ‘The Artesa machine has the ability to reproduce a high-quality “hand-like” engraving.

‘With the help of the Galil motion controller, it can reproduce engravings identically.

‘In the hand engraving work, the artisan performs a downward and upward movement with the chisel each time a cut is made in the surface of the object being engraved.

‘The Artesa’s engraved line has a curvilinear or open polygonal trajectory in the vertical plane achieved with non-rotating cutting tools, which give the brightness and beauty characteristic of these engravings,’ he added.

The machine consists of a table with a bed frame that firmly holds the material to be engraved.

Just above the table is the spindle-mounted engraving tool head, which includes a laser pointer and three carbide inserts with 35-, 90- and 135-degree corner cutting edges.

To control the complex and precise X, Y and Z movements of the Artesa tool head with carbide inserts, Di Benedetto specified a DMC-2143 four-axis Ethernet motion controller from Galil Motion Control, including the SDM-20240 for driving the four stepper motors.

In addition to the three degrees of freedom provided by the DMC-2143, it also controls the critical PT (line depth) and SV (vector tracing) axes.

The PT axis is designed to gradually move the cutting tool downward on a vertical plane so it can cut into the material to a desired depth doing the descending part of the curve and then upward to the material surface cutting the ascending part of the curve.

The SV axis manages the 360 motion of the cutting tool, making sure that the cutting edge always faces in the pre-programmed direction to effectively trace the vector being engraved with a positioning accuracy of 0.1mm/300mm (0.004in/12in) that is repeatable to 0.02mm (0.0008in) under no-load conditions.

Di Benedetto continued: ‘In addition to motion control, it has other features such as numerous inputs we assign to the limits control, a motor on/off function and material detection.’

Galil Motion Control

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