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Showing posts with label cnc vertical milling machine. Show all posts
Showing posts with label cnc vertical milling machine. Show all posts

Monday, 8 July 2013

Mold machining: Promises kept with Breton Matrix

Meeting the delivery times and high precision parts are the foundations of company philosophy for Focus on molds. To keep these trump cards in our hand, the company puts its trust in qualified personnel and hi-performance machine tools such as the Breton Matrix 800 K25/2T.

Designing injection or pressure die-casting molds is an interesting challenge for the engineering department, as these components push the designers’ creative energy and come up with new solutions. The special feature of the molding process is that two similar pieces need different dies: just a small geometric variation may mean redesigning the shape and position of elements such as deburring chambers or heat exchangers. This redesigning is frequently required in the automotive industry; imagine how many parts change shape from one car to the next, or even two different versions of the same model.

So similar, so different
“Molds may seem all the same, but every customer has its own special requirements as the mold will be used in different ways on different presses to those of the competition,” says Giuseppe Ghilardi, general manager of Focus on molds, “so there's a study I might even call tailor-made that goes into every die and punch design developed by highly qualified personnel. Here at Focus on molds we dedicate a great deal of time and energy to our employees, concentrating our efforts on their training and rewarding those deserving the highest praise. We're convinced that the quality of the parts and therefore customer satisfaction is the result of their work, rather than just the performance of the machine tools. This has been our philosophy since 2002, when we launched the brand.”

Over a decade of success thanks to an important change of direction in 2002 when the new management took over a company established in 1979, completely restructuring both the staff organization and work method. 
At the end of 2012 we moved to the new works in Cologne (BS) with an area of 10,000 m2, half of which covered. “During the transfer, we took the chance to assess the conditions of our machine tools, to see whether it was worth moving them, or if it was more economically viable to purchase new models,” mentions Ghilardi. “In the case of Breton, in the old works we had a machine with seven years of service, and although it still managed to keep up with the required quality standards of production, some minor imperfections had begun to appear.”

More than words
The positive results in these seven years convinced Focus on molds to continue collaborating with the Italian company, purchasing a Matrix 800 K25/2T. “Until a few years ago I hadn't even heard of the Breton machines,” continues Ghilardi. “During our first meeting I was told their product had certain characteristics and could offer a certain type of performance. I'm happy to say that the promises made by the sales staff and technicians were kept, not just when the machine was purchased but in time too. For this reason, when it was time to renew our machines we were in no doubt whatsoever and contacted Breton immediately.”

Initially Focus on molds asked if it would be possible to retrofit the old model already installed, but the characteristics of the Matrix 800 K25/2T in the catalog convinced the company from Brescia to invest in a new machine. “The Breton technicians explained that the new machine had numerous improvements to reduce head noise, improve recovery from thermal expansion and improve accuracy on some machining types even more than before,” Ghilardi adds. “As the promises made have always been kept, I put my trust fully in the new machine and signed the contract.

As this machine is mainly used for finishing and superfinishing molds, the improvement in precision and maintaining this performance in time were parameters of fundamental importance. As well as the difficulties associated with the dimensional variations of the molded piece in fact, there is also the problem of having to produce net shape components with very close tolerances. 
The Matrix 800 K25/2T meets these requirements with ease, thanks also to its very rigid head and the ability to work at high rotation speeds, which lets you work a wide range of materials.

Punctual precision
This machine is ideal for making the majority of molds, which otherwise would need to go through a spark erosion process, increasing production and delivery times. It's important to emphasize that timely performance is something of a motto for Focus on molds: we're proud to say that over the years we've always managed to deliver our customers' orders by the date of delivery. 
90% of our production is for the automotive industry, and when working with the major names like Audi, Mercedes, BMW and Jaguar you must be fully aware of your potential and times, because delays will surely mean a customer lost,” states Ghilardi. “This is extremely important for us, as first and foremost it's an indication of our professional standards and lets us establish trustworthy relations with our customers: if the customer trusts you, you're sure to be one of the first suppliers they'll contact for future orders. The problem is that the person placing the order takes precision for granted, and requests tighter and tighter deadlines

This means we have to take great care when deciding which proposal to accept. Sometimes in fact in spite of everything we've had to turn down interesting projects because of the impossible deadlines, despite the fact that from a feasibility point of view they were well within our scope. A contract we signed recently represents a different case though, as the customer gave us an ultimatum in terms of the number of parts and the delivery date for consigning the job. We accepted, despite the fact the contract would mean a notable effort on our part, putting our trust in the potential of the Matrix 800 K25/2T.”

Precise, versatile, reliable
The Breton machine is a highly versatile milling center that can meet any work requirements, thanks also to its extensive operating range that lets you position a complete mold without having to remove it, if only minor milling is required. Furthermore, thanks to its 5 axes, the Matrix can perform complex operations and the workpiece can be positioned on the machine in one simple operation, so there is no time wasted and there can be no errors in precision as the piece doesn't have to be moved. 
The main advantage is the way the head moves and turns,” explains Ghilardi. “The Matrix can perform complicated movements extremely easily also thanks to the numeric control installed, which may be either a Heidenhain or Siemens NC, and simply transmits the data from the Cam program to the machine, so it responds as quickly and smoothly as possible.” This makes the Breton machine very easy to use, so easy in fact that training here at Focus on molds is limited to new personnel, and is basically only on learning how to use the NC.

On paper, Matrix is a machining center that's easy to use, and in practice it's proven to be highly reliable too: until now the new machine hasn't needed any kind of repair call, even tele-assistance type. This is a very interesting service offered by Breton, and thanks to the tele-assistance support the technicians can remotely run diagnostics and, for repairs that require field service, they arrive just with the right tools and parts to solve a problem, although most of the time problems can be solved over the phone
This is more than just an advantage in terms of image for Breton; it means customers can respect their times, as any repair call will be timely answered and targeted.

In general, we're very pleased with Breton  both from a machinery point of view and for the quality of the pre and post-sale service,” concludes Ghilardi. “They always met our requirements, and above all kept their promises. For us this means added value, because it's exactly the same way we've earned our customers' trust and is the mark of a serious and reliable partner.”
(Thanks to TM - Tecnologie Meccaniche for the article)
Sergio Prior

Wednesday, 3 July 2013

Breton vertical machining centre XCEEDER - 5 axes for Formula 1

It's a common belief that Formula 1 is the realm of speed. Actually, Formula 1 is rather the realm of acceleration, the vector enabling to reach an extremely high speed in a very short time frame.

That's why F1 racing teams ask the specialized manufacturers of rims to perfect their products so as to reduce their weight as much as possible.
In this restless seeking for lightness, the rim is engineered using the most advanced techniques such as the finite element method (FEM) that highlights the stress distribution in the piece, thus revealing the less stressed areas which can be reduced in size or thickness.

Indirectly, the FEM also enables to find the ideal geometry that allows optimizing the strength-to-weight ratio.
In most cases, the very special rims for F1 are hot forged and then turned and milled.
The extent of these machining operations is amazing: just consider that some rims weigh 35 kg when forged but once the machining is over and all the parts which the FEM considers as non-essential in relation to strength are removed, the rim weight is 3,5 kg only.

It goes without saying that high-grade machines are required to perform so complex and delicate machining operations: the control on five continuous axes and a piece holding table enabling to position it wherever it is needed are absolutely necessary.
Furthermore, since small-diameter tools are often used and pieces to be machined are made of light alloys, the spindle must feature an exceptionally high speed which just a few machines can develop.

On the other hand, such a high speed may involve vibrations that could compromise the surface finish and the miller service life, that's why an utmost rigidity and static and dynamic stability are required.
At present, very few machines meet all these requirements for real whereas Breton vertical machining centre XCEEDER 1200RT copes pretty well with all of them.
Click here for additional info about XCEEDER 1200RT

Write to mail@breton.it to ask for an estimate
By-by
Sergio Prior

Wednesday, 8 May 2013

MAXIMA - Vertical machining centre for milling and turning


A competitive solution
Multitasking, high-speed vertical 6-axes machining centre for vertical milling and turning of workpieces up to 3.500 mm in diameter.

MAXIMA is ideal for turning, milling, drilling and tapping components with a three-dimensional, complex shape such as those used in aeronautics and gear, energy or general mechanical sectors, minimizing the piece positioning operations during the transition from raw material to finished product.
Wide range of configurations for custom  made performances
There are many ways to configure the machine in order to meet any job requirements:
- standard version with one work area
- version with two work areas for hunting machining
- version with double Ram
- version with double beam
- Different solutions for automated pallet loading/ unloading are available for either a single machine or “machining islands”.

Easy access  and clear view
Clear view of the work area that is within the operator easy reach thanks to the machine gantry structure with mobile bridge and wide frontal doors.
 

A superior head
The electrospindles always offer the highest machining performance thanks to the cast-iron, fork designed head ensuring structural rigidity and efficient vibration damping. The totally symmetrical structure of the head guarantees the best mechanical precision even when environmental temperature is variable.

High Speed,  Dynamics  and Precision 
Carriage and beam travel on suitably dimensioned recirculating roller guides ensuring precision and stability. Axis motion is through a system consisting of a ground, recirculating roller screw/pre-loaded nut assembly, or a double rack and pinion system with electronic backlash recov-ery, powered by brushless motor. 
Axes are controlled by digital drives with latest generation, brushless servo motors.

Wide range of electrospindles
MAXIMA machining centre can be equipped with a
wide range of electrospindles according to the required machining.
Machining precision is always guaranteed by the thermal stabilizing system of the spindle and the software designed to compensate natural, thermal expansions of the electro-spindle as the machining conditions change. Simple and reliable tool magazines.
Depending on the version, the machine can be provided with moving, fixed wheel-type magazines or chain magazines with manipulator for rapid exchange in order to minimize the tool changeover time.
Magazines are installed outside the work area for protection against dirt and long-term reliability.
They can also be provided with a system for the tool data automatic coding and chip reading.

M 51/28
Electrospindle featuring a power of 40 kW, continuous torque of 51 Nm in S1 duty and 28.000 rpm: the ideal choice for customers requiring high-speed machining on either steel or light alloys, from rough-machining up to precision finishing.

M 100/18
Electrospindle featuring a power of 40 kW, continuous torque of 100 Nm in S1 duty and 18.000 rpm: smartly performing any machining operation on either steel or light alloys, from rough-machining up to precision finishing.

M 300/14
Electrospindle featuring a power of 48 kW, continuous torque of 300Nm in S1 duty and 14.000 rpm: amazingly efficient when machining either steel or super alloys, from rough-machining up to precision finishing.

Top bellows and dust extraction

Ideal for machining composite and resin-based
materials, MAXIMA can be supplied with an efficient dust extraction system, which is installed on the spindle nose, and top bellows that completely enclose the machine thus isolating the work area from the surrounding area.
Different fume and dust extracting systems are available according to the customer specific requirements.

 

 
 
The ideal  cooling system
Depending on the type of machining, the tool cooling system may either use a coolant liquid flowing inside and outside the spindle (maximum 60 litres/minute) with a fixed or variable internal feeding pressure of up to 70 bar, or incorporate a spray mist system, or simply use compressed air.
So, why don’t you request a quotation for a MAXIMA?
Write to mail@breton.it
By-by
Sergio Prior



Wednesday, 12 September 2012

Breton EAGLE - Rough Trocoidal test




By-by
Sergio Prior

Tuesday, 24 April 2012

Breton Flymill - how to make a giant gear wheel

Hello,
Our customer, Pushpak Trademech Ltd., sent me this amazing photo showing a gear wheel completed after a lengthy work.

It is one of the largest gear wheels ever built, with a diameter of some 9.5 metres.
 In the video below you can see how the Flymill 1600/K80, a high-speed vertical machining centre produced by Breton SpA, machines one of the four sectors composing the gear wheel.




Click here for more INFO 

Sergio Prior

Wednesday, 22 February 2012