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 El Multicentro D4 de la serie Everest, visto en detalle

Produced by the Italian Dauma is comparable with a 4-axis work center

Multicentre D4 of the Everest Series, seen in detail

Drafting MU15/06/2007

The new D4 multicentre of the Everest series produced by Dauma, company located in Pieve di Soligo (Italy), is a modular machine rotary table with four stations - three work and one of loading and unloading - placed around a turntable displaced with engine torque. Recently, the company ILC, Varese (Italy), specializing in the production of oil or grease centralized lubrication facilities, has acquired one of these multi-site. In Spain, the marketing of these machines carries out the SG/HR company (Software of) (Management, automata and Robots, S.L.).

Each workstation, the new D4 multicentre consists of an operating unit of four or five controlled axes that constitute a true Center CNC work, equipped with an electromandril of 15 kW of power of 18,000 rev./min. and equipped with a store of exchange of tools with the possibility of accommodation of 12 to 40 seats, with connection HSK A63.

The multicentre D4 - explains Michele Andreola, general manager of Dauma - is son of the Everest installation of ten seasons - nine of work and one of automatic loading/unloading already submitted by Dauma Bimu in 2004. But the new machine is not limited to meet the technological experiences developed in previous installations, but shows three major characteristics for a work machine:

Speed and accuracy
Flexibility
Speed of change of model to model to be made (set-up of the machine)

Therefore the D4 multicentre is an installation that you want to synthesize the requirements expressed during these years by the same clientele of Dauma and investigations in the various sectors, such as the automobile, the hydraulic, tire, etc.

The new Everest has remained the fundamental characteristics of the original machine, but is very close to the daily demands of the customers with regard to technology, functionality and the technical.

"We are sure - says Andreola - of started a new concept for the work of mechanical components in 2004." "The development of this multicentre Everest Series is a great help for those companies who work directly or on behalf of third parties in the production of mechanical parts used in the most different sectors".

An example of the pieces produced by the ILC company worked in the multicentre D4. Thanks to the flexibility of the solution pieces are finished on the machine on the basis of the blank cut on the toolbar.

The advantages of the engine torque

From a structural point of view the multicentre series EVEREST mod. D4 is comprised of a base made from steel, a soldier and worked in machine tools. The standardized structure guarantees the Elimination of all residual stresses caused by the welds. A hollow cylinder the engine torque to the displacement of the turntable is housed inside which is mounted at the base. This engine is supported in turn by a rangua of cross roller to ensure that deformation there is no when the game forces caused by the work units are downloaded on the table.

Dauma experience in the use of the engine has already matured much and it is possible to confirm that, by all of the advantages resulting from it, it is a very good solution in the displacement of large rotary tablesYou can facilitate the project of the system of table - movement piece, does not wear away and does not need maintenance, is accurate, reliable and allows for short periods of time of transfer of the satellites chucks of an operational area to the other.

Thanks to the torque engine also has been optimizing the dimensions of the table to make a wide space between a workstation and the other. Therefore the operator can climb on the machine, easily reach work areas where has a broad space of displacement for the substitution of templates chucks (automatic performance of the headset) for changing the production and enjoy ample spaces for scheduled maintenance work.

On the turntable in continuous carrier, furniture modules swivel units are housed (speed Max. 1200 rev./min - 4 ° axis of work) customizable depending on the type of pieces to be buckles.

The mirror of the table is also provided, as the rest of the installation, open spaces to perform customizations with ease of implementation and facilitating project times. All customizations are installable with quick connection systems. With a multiple series of appropriate templates distributed on the table, it is possible to obtain the maximum speed of conversion, from a series to the other with the simple programming in the control panel depending on the type of piece to be working.

Dauma has developed the fifth axis CNC satellite units to give maximum flexibility to the work of the pieces. with its own patent proposes the possibility of integrating other axis for rotation of the piece in both axes of movement of the same order.

In the center of the table are the units of distribution for the command and power fluid that feed the work areas.

Three three-axis workstations

Three workstations of three x-y-z axes have been installed at the base.

The base - workstation interface has been made on a surface worked with a machine tool, rectified to maintain the necessary tolerances and displaced on caged roller guides. Movements are handled by motor without brushes that trigger a ground ball spindles.

Each workstation provides as standard an electromandril (passage of the hole for Jet of high pressure tool) combined with a warehouse with a change of tools from several positions, but it is customizable according to requirements, for example applying a few units tool of revolver.

Installation of the installation. It shows the central monolithic structure in which are mounted the modules of work.

The multicentre series Everest mod. D4 is closed enclosed by a series of circular protections that move on appropriate guides. The circular structure allows to avoid the accumulation of chips favouring easy transport to the truncated cuba of unloading located in the center of the base and continuously sprayed by water emulsion to ease out. The shavings are sent to the installation of evacuation, separation and filtration of the cooling liquid.

Another feature is the displacement of the former doors, which open a wide window of access to all the machinery and allow the operator to enter and walk along the machine perimeter. The positions of connection of the remote control panel, located externally, allow the operator to engage in the operations of tuning of the installation in full freedom.

All the tubes and cables in distribution of hydraulic and electric services meet in spaces in support above, isolating them from the work area to avoid contamination with the coolant. Connect with the work units through downs located and covered in flexible sheaths right up to the entrance of the same unit area.

The displacement of the turntable group. Mounting is performed step by step successive, starting with the pre-Assembly of the outer frame that contains the part estatórica, later supplemented by the setting of the inner part of connection with the rotating disk.

Dauma has provided a special interest to the dimensions of the installation. The area occupied by the Everest Series, in relation to production characteristics referred to, is much lower than traditional working facilities. It is very structurally compact (occupied protected area against trampling of 15 square meters), once you have removed the bleachers of access, he appears as a drive monobloc which can easily scroll in loading and unloading phase, transported and positioned comfortably where the client, reducing installation and boot times. The hydraulic station, the group for the disposal of the shavings, the installation of cooling of the engines and the electric Board are located externally.

Electronic group is integrated: the motors, drives, the CNC are supplied as standard brand Siemens, Fanuc, and others upon request.

The multicentre series Everest mod. D4 is closed enclosed by a series of circular protections that move on appropriate guides

A new concept of production

"The multicentre D4 - continues Andreola - allows the user to perform all the work carried out in a traditional workplace at each station, but the availability of three stations allows triple its benefits and therefore also the productivity." It is also possible to optimize the phases of work with a number to reduce the cycle, in favour of productivity time. In our view, all this represents a great advantage over the traditional transfer machines which, among other things, must be devised specifically on the basis of the groups predefined pieces to be working. Multicentre D4 work cube, is currently equivalent to 250 mm side: in this space it is possible to work any piece on six faces. Anyway already in phase of development versions of larger dimensions that are able to cover a higher labour camp. It is known that the possibility of working complex pieces with a single shot from the raw material allows to obtain very drastically reduced cycle times and high working precision. In short we multicentre D4 can represent a new concept of production, combining in a same installation features of the Centre with the transfer, for working pieces of medium and high complexity in variable, high or medium low amounts. "The ideal instrument for the customer you want to be able to meet rapidly the fickle demands of the market with production costs always more competitive."

Dauma work is comparable to a work center of 4-axis, 3 in the portaelectromandril module, the 4th in the portasatélite area.

Usual is that the exchange of a product to several hours of making a point-to-point, or various stages may be needed to finish some operations. In the multicenter Everest D4 the complete production change can occur within 20 to 30 minutes. Another strength is the flexibility of the machine, its availability for up to 40 tools per unit of work (therefore the possibility of working with the installation not monitored, not only for parts with few seconds cycle times but also with parts with cycles of some minutes), to replace automatic of the headset, the integration of the load download automatic of parts, to the possibility of making some turned, the possibility of having a 5th axis for the evolution of the piece.

The strong of the multicentre series EVEREST model 4 d points

Productivity: the user can perform all work licensed in a traditional workplace at each station, but the availability of 3 units of work and 3 cores working simultaneously allows triple its benefits and therefore also their productivity.
Flexibility: 3 workstations can be used independently from each other, are controlled from the same position, are programmed one at a time to optimize the level of the cycle. The user also has a high number of tools (up to 40), each season has the possibility and balancing the cycle of work in 3 seasons for the best results. Thanks to the possibility of placing on the table a series of templates for different types of parts fixing you can find maximum flexibility, the maximum speed of re-equipment and work, from a number to the other with the simple programming of CNC depending on the type of piece to be working. All customizations are installable with hitch systems fast.
Speed and accuracy: thanks to the availability of a continuous rotary table with engine torque. The election, as well as the draft of the system of table - movement piece, make simple does not wear, you do not need maintenance, it allows to obtain high precision, high reliability, reduced chip to chip time.
Versatility of work: thanks to the satellite chucks with 4 ° and 5 ° axis CNC control and the series of templates in the table.
Freedom of configuration: thanks to the availability of vertical or horizontal labour units, characterised by modularity and a high standardization.
Full accessibility and operation ergonomics: spacious achievable facilitate access for the operator and the implementation of the work of implementation, maintenance, rapid re-equipment for the change of production. The positions of connection of the remote control panel, located externally, allow the operator to engage in the operations of implementation to installation in full freedom and therefore also in front of the station involved, without the link to work in the front part where CNC control will be positioned.
Field of work: standard cube of 250 mm (incrementing order) side.