Mechanical rocking shear pre-assembly at Galbiati Group workshop. The blades are actuated by the coordinated rotation of two eccentric shafts, driven by two independent gear trains, each one powered by 900 kW electric motors at 1000 rpm. Total weight: more than 650 ton.
After pre-assembly and test at Galbiati Group workshop, the entire rocking shear was dismantled in sub-assemblies and transported by sea to its final destination in India. On site, it was reassembled by qualified personnel and immediately entered production, to the complete satisfaction of the local engineers.
The image below shows a detail of the preliminary assembly phase and tooth contact pattern check on the eccentric shaft coordinated rotation gear trains. Take special note of the oil film bearings and the thrust bearings, sized to support the enormous peak loads during the cutting phase.
The image shows machining of the welded steel lower frame on a 120-ton rotating table CNC boring machine.
Pendular shears for continuous thin sheet metal cutting up to 3 m width at the end of pre-assembly in Galbiati Group workshop. The blade is driven by the rotation of the entire blade-holder unit on oil film bearing journals. All drives are hydraulic/mechanical coordinated by a computer system in order to adapt to the wide variety of sheet to be cut.
All drives are hydraulic/mechanical coordinated by a computer system in order to adapt to the wide variety of sheet to be cut.
Two hydraulic rocking shears at the end of the pre-assembly phase in the Galbiati Group workshop.
The blade is driven by the coordinated movement of two, approx. 1000 mm diameter, hydraulically driven pistons. Rated up to 450 bar. Total weight: more than 450 ton each.
In addition to co-designing complete shears in close cooperation with our customers, Galbiati Group can, if needed, supply only the gear trainsfor mechanical shears(rocking shears, swing blade shears, reciprocating shears, pendular shears, divide shears, etc.).
In these cases, as the frame for the gear train is not available, the gear seats are simulated with axels on the static rotation bench in order to make certain that geometry, contact surface, and backlash are correct.
The official announcement for the procurement of these works was awarded in July/August 2011 to GALBIATI GROUP, which has taken charge of the entire operation, in collaboration with specialized technicians working at the site of Noto coordinated by A. POINT of Rome; mobile precision measuring instruments are used, and all the production capacities at the workshops in Oggiono (LC) are used together with the super modern control equipment that the company has (dimensional control desk ZEISS 3500 X 6000 X 2500 at controlled temperature, computerized LASER TRACKER). 300 days from the signing of the contract, to carry out the whole operation, were granted to INAF by GALBIATI GROUP.
In the category “Global Competitiveness” Galbiati Group Srl was nominated “Supplier Star” for the demonstrated ability in working with Siemens VAI MT, for the design and construction of power transmission parts for rolling mills and casting plants; Auer also highlighted as Galbiati Group Srl well-established a good cooperation with Siemens VAI MT “ providing operational flexibility and high quality, all combined with speed and accuracy in delivery, key features that make Galbiati as the best provider for Siemens Vai of components for metallurgic plants. ”
The Galbiati case is still school: following the event of the last July 8th 2011 2011 it was now the venue for the 21 Assiotaffiliates whose Galbiati case history was presented, in cooperation with Staufen, on Friday October 28th 2011. Optimization of production and lean production were the issues covered during the event, both on a theoretical and academic point of view thanks to the great presentation of Dott. Giancarlo Oriani,managing director of StaufenItalia, and on a practical one, through the visit to the facility by all Assiot affiliates (mechanical workshop and assembly department).
One of the strategies, which led to excellent results in terms of production optimization and searching for new prospects is the one Galbiati Group introduced in collaboration with RDI, Staufen and Ecipa Lombardia, in a conference which saw the participation of Sebastiano Barisoni. (Il Sole 24 Ore) as moderator and Professor Alberto Portioli from the Milan Institute of Technology, explained the principles of lean production and innovative communication to the public.
Galbiati Group was rewarded from Hatebur, productive leader of mechanical horizontal printers, like best supplier 2010. We receive this important recognition with large pleasure and satisfaction.
“We were glad to present this special award to Galbiati Group S.R.L. in recognition for their merits in mechanical processing.”
Thanks, there is not better manner “to crown” the first work decade together, and get ready to confront the next one.
Thursday, May 20, 2010
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