General Logic srl

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History

History

General Logic was established in 1998 by Daniele Lugli and Franco Sartorio.

Daniele Lugli graduated in Nuclear Engineering with an experimental
thesis at Euratom. He then worked with industrial diagnostic expert
systems, directed the software group of Fidia (producers of numerical
controllers for milling) and coordinated the technical group of Prima
Electronics in the development of the PRIMACH numerical controller for
robots and laser cutting machines.

Franco Sartorio has been an important figure in Piedmontese and Italian
entrepreneurship. Graduated in electrical and mechanical engineering,
founder of DEA and of the Prima Group, holder of several mechatronic
patents, he has been the father of the contact measuring machine.

The PAG and Sentinel measuring machines designed by Sartorio remained in
use by hundreds of enthusiastic customers who did not want to replace
them even when electronic spare parts were no longer available.

The original mission of General Logic was therefore to create a modern
numerical controller for the retrofit of these machines, preserving the
large libraries of part programs developed by customers; so was
born VCNC, one of the first NCs based on Personal Computer, and so General Logic has been able to accumulate a large experience in the field of metrology.

_{^{A large Sentinel contact measuring machine}}
_{^{with VCNC control unit (on the left).}}

OptiMe

Soon General Logic realized the potential of optical measurement and began developing OptiMe (Optical Measurement, but also very well in Latin).

OptiMe is a 3D scanner based on the projection of a sequence of structured light patterns, acquired by two cameras (in the model called Bino) which are fixed on a rigid support.

_{^{A prototype of OptiMe on a carbon fiber plate and with a commercial}} _^projector.

Comparison with commercial scanners shows fully overlapping results.

^{_{Comparison between scans made with OptiMe}}
^{_{and with a laser arm.}}

Depending on the configuration (distance between the cameras; their
orientation; focal length of the lenses) OptiMe can scan objects of
different sizes.

_{^{OptiMe dealing with the aluminum “skin” of a fuselage. The projector is far from the scanning head to reduce reflections. On the right, a calibration artifact of a size suitable for the part being scanned.}}

^{_{Mesh obtained by scanning a cameo depicting Louis XVI and Marie Antoinette with OptiMe in small configuration.}}

Innovation

OptiMe offers innovations not easily found in similar systems:

_{^{OptiMe can also use non-certified calibration artifacts, provided they are rigid and approximately planar; after calibration, the scale factor must be set. This calibration method is essential for large fields. In addition, for accurate compensation, the “harp” can be used: a frame
with taut, rectilinear wires. If the lens distortions are correctly compensated, the wire images appear straight.}}

^{_{In addition to the usual flat markers, visible only within a certain angle, OptiMe can also use spherical markers, visible from any direction, such as those on the frame in the image. In this way, the alignment of multiple scans is simplified.}}

_{^{If rigidly fixed to the rig and properly calibrated, the projector can work as a “third eye”, allowing for depth acquisitions of concave objects, not possible with only two cameras.}}

C-OptiMe

In 2018 Fratelli Rotondi srl of Legnano, manufacturers of contact
measuring machines and optical scales, acquired a stake in General
Logic. One of the fruits of this synergy is C-OptiMe (Collaborative OptiMe).

The cobot (collaborative robot) moves the OptiMe head, allowing all necessary scans to be performed from the program, without the need to manually move the piece. A rotating table can complete the system, allowing for the acquisition of pieces even larger than the cobot’s working field.

OptiMe Trio

The use of three cameras, instead of two as in the Bino model, allows
for some additional possibilities. If in Bino it is necessary to project
a sequence of patterns to make the points on the surface identifiable,
so that they can be reconstructed, the third camera allows for
identification and reconstruction even with a single random pattern
projected. This means reducing scanning times and the risk of the object
moving during acquisition; Trio could also be used as a handheld
scanner. For this reason, General Logic and Fratelli Rotondi are
developing Trio, the new trinocular model of OptiMe.

_{^{Experimental prototype of Trio, still without a projector.}}

Another possibility offered by the trinocular system is to detect the
edges of flat objects regardless of their orientation, while a binocular
system cannot correctly acquire edges parallel to the line connecting
the two cameras.

^{_{Trio (at the top) at work on a large metal sheet.}}

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