This news article was originally written in Spanish. It has been automatically translated for your convenience. Reasonable efforts have been made to provide an accurate translation, however, no automated translation is perfect nor is it intended to replace a human translator. The original article in Spanish can be viewed at Corte por chorro de agua
A necessarily robotic system
Water jet cutting
Fermín Capella15/09/2000
Water jet cutting systems are characterized by the cleaning of the cut edge that makes unnecessary many times any subsequent operation
Indeed, the power of Court of the tiny stream of water that comes out the ceramic nozzle or Sapphire is such that can be cut in a very short time any member of the operator who committed the imprudence to its passage.
Water jet systems were developed initially for the cleaning of facades, degreasing of runways and warehouses and other similar applications. A relatively modest increase in the power of the bombs allowed to also use the procedure for cutting concrete, leaving bare and without damage, the underlying metal structure and other subsequent increase allows to cut own reinforcement bars.
These systems, an extraordinary efficiency, were initially handled by the operator's manual mode, although it was already powers that required very careful handling to avoid accidents.
It has progressively increased the power of the bombs and is currently situated in the order of 4,000 bar. This makes that the system is no longer manageable if it is not by automated means. When it comes to cutting of sheets, can be obtained any geometric shape using an XY table commanded by computer. However, when the figures cut have profiles in three dimensions, it is necessary a 6-axis robotic system conveniently protected inside a cabin not accessible while the computer is running. Both systems can work with more than one unit of water jet.
Water jet systems can cut material up to 200 mm thick in any geometric drawing
Water jet systems can cut material up to 200 mm thick in any geometric drawing. There is no thermal effects in any zone, tension, or metallurgical changes. Not occur escamados, dust, burrs or discolorations and obtained parts with tolerances of ± 0.1 mm, which are almost finished. The cut is clean and the edge, brilliant and has been an example in which cut lyrics from 10 mm thick aluminium sheet, perfectly finished including inland, a measure of 35 x 20 mm.
The procedure is widely uses for cutting hard materials (Kevlar, honeycomb of aluminum or Nomex, etc), and a curious application in this regard is the cutting of parts industrial pastry without them from sinking on the edge of the Court, or in the fileteado, including bones, meat industries of great procducción.
Given that the Court of great thickness or work at high speed is not always necessary, the current trend is the improve the accuracy of the nozzles and reducing its diameter to allow the Court with bombs and lower power pressure intensifiers.
8 • PRODUCTION MECHANICS. September 2000
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