Chap. 3
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CHAPTER 3 – Machine description and technical data
3.7.7 “TGV” - Variable Geometry Tables (Y1 and Y2 axes)
The TWIN work center is equipped with two independent work tables [1], that are numerically
controlled and movable along the Y axis (height from the floor for loading/unloading = 1050 mm)
for oversize processing and translation: in this way, the head can operate in conditions of
maximum stiffness and therefore accurately.
The planar support surface of each table is made up by two steel shelves with adjustable center
distance [2].
The shelves are capable of depression and the surface has a grid of 50 x 50 mm.
On both the long sides of the shelf two dovetail millings exist, that allow anchoring of the pneumatic
presser, easily adjustable along the Y-axis, for optimal locking.
This solution allows:
• by adjusting the shelves at a distance less than the length of the workpieces, to process the
ends of short elements without having to lift the pieces, to avoid collision.
• by distancing the shelves to the maximum, to let the machining head enter between the
shelves, to machine the internal sides.
• to drill from the bottom up, even at central positions of the piece.
• to machine very long pieces, by placing the shelves parallel to the X-axis.
• to halve the number of counterprofiles.
• to halve the setup time.
The two tables can be synchronized by the numeric control software, for machining very long
pieces. This operating mode is defined as “TANDEM processing”.
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