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CNC Control For Rolling Machines

CNC Control for Rolling Machines

Today, CNC controlled machines can be found in almost all industries, from small-scale metalwork shops to big manufacturing companies. There is barely any phase of the manufacturing process that is not affected by automated CNC machines. Faccin SPA, a manufacturer of plate rolling equipment, foresaw back in the early 1980’s the need of the metal forming industry to have CNC-controlled rolling machines. Article by Faccin SPA.

After a continuous research and development, the first generation of Faccin-CNC bending rolls reached the metal forming manufacturers and for more than 30 years Faccin has been offering them all the benefits of the most advanced and powerful numerical control developed for bending rolls: the PGS-ULTRA.

The first benefit offered by Faccin’s CNC PGS-Ultra is improved automation for its plate rolls. The operator involvement linked to producing workpieces can be greatly reduced or eliminated. Therefore a CNC-controlled plate roll can run unattended during most of its rolling cycle, freeing the operator to do other tasks. This gives the CNC-controlled machine user other benefits like reduced operator fatigue, less mistakes triggered by human error and a steady and foreseeable rolling time and quality for each piece.

Since the rolling machine will be running under program control, the skill level required of the operator will also be reduced, decreasing the dependability risk of the manufacturing company on a single highly skilled operator.

The CNC PGS-Ultra, built with industrial SIEMENS hardware and a perfected user-friendly graphic interface, is so simple to use that even an inexperienced operator can program the rolling machine to produce simple circular shapes of different diameters and lengths or more complex pieces like polycentric tanks, spirals for ventilators, plates of variable lengths, and many more.

Accurate Rolled Pieces

The second major benefit of the CNC-controlled plate-rolling technology is consistent and accurate rolled pieces. Today’s CNC-controlled machines manufactured by Faccin can claim unbelievable precision and repeatability of rolled pieces. This means that once a program is verified, no matter the quantity, identical rolled pieces can be effortlessly produced with precision and consistency.

A third benefit offered by the CNC-controlled plate rolling machines is flexibility. Since these machines are run from a very “easy-to-use” program, running a different workpiece is as easy as selecting it from a different shape option on the screen. Special and unique options are available in the standard configuration like the possibility to build programs for rolling variable thickness programs, calculation of the plate developed length, cycle time, etc. Once a program has been verified and executed for a production run, it can be easily recalled the next time the workpiece is to be run. This leads to yet another benefit, fast change-over.

Motion Control Feature

Finally yet importantly, a wide range of machine accessories like feeding table, plate centering, lateral and top supports, clamping devices, can be controlled with the CNC PGS-Ultra through an easy-to-use motion control feature that manages 15 programmable directions (axes) allowing the operator to configure all the accessories required in the manufacturing process of high quality rolled plates.

Since programs can be easily loaded on the CNC PGS-Ultra, a very short setup time is required and therefore plate-rolling machines become very easy to set up and run which is imperative with today’s just-in-time production requirements.

Manufacturing companies face today huge challenges, intensified pressure and the need to reduce production time, improve flexibility and increase quality with energy reduction. Faccin is ready for Industry 4.0 thanks to its Smart Package 4.0 that offers features like Systems Diagnosis, Teleservice, Management Control, Drawing Imports, Rolling and Production Lot Statistics and Flexible Network Solutions between others, helping the manufacturers of today, face the challenges of tomorrow.

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Bystronic “TiltPrevention” Solution Optimises Laser Cutting Processes

Bystronic “TiltPrevention” Solution Optimises Laser Cutting Processes

With the “TiltPrevention” assistant function, Bystronic is increasing process reliability in the field of laser cutting. The intelligent function enables users to create cutting sequences that minimise the risk of creating protruding parts in the sheet. This reduces the disruption of cutting processes and downtime caused by cutting head collisions.

Tilted parts are a risk factor during the laser cutting process. They can cause a collision with the cutting head. This results in the disruption of cutting jobs, rejected parts, and in the worst case, costly damage. However, they also impede automated unloading, as the automation system’s grippers have difficulty picking up tilted parts.

Until now, micro-tabs have been a time-intensive method of preventing cut-out parts from tilting. The software positions small connections between the contour of the part that is to be cut and the residual grid in the cutting plan. In this way, parts remain fixed to the surrounding sheet after cutting. One disadvantage of this solution is: The cut parts require reworking in order to remove the traces of the micro-tabs. Another disadvantage: The automated removal of the finished parts is impeded because the micro-tabs make it difficult to remove the parts from the residual sheet.

Another approach is to use software to guide the paths of the cutting head during the cutting process so that, as far as possible, it circumvents risky sections where parts could tilt. However, this solution does not eliminate the root of the problem—parts protrude, still represent a risk, and are difficult for automation systems to cope with.

Algorithm Generates The Ideal Cutting Sequence

With “TiltPrevention”, Bystronic has now developed a new solution. In future, BySoft 7 will use this intelligent assistant function to compile cutting plans in such a manner that parts cannot tilt during the cutting process. This largely eliminates the need for micro-tabs.

How does it work? An algorithm calculates the mechanical behavior of the parts while they are being cut out of the sheet. To achieve this, “TiltPrevention” takes into account a wide range of parameters:  What is the density of the material that is being cut? What is the geometry and weight of the parts that are to be cut? How high is the pressure of the gas that flows out of the cutting head during laser cutting and exerts pressure on the parts? How are the parts positioned on the cutting grate? Are there enough contact points?

Subsequently, “TiltPrevention” recommends lead-in and lead-out points of the laser so that tilting of the parts after cutting is prevented to the greatest possible extent. In addition, the function proposes the best possible route for the cutting head over the metal sheet. This creates an ideal cutting sequence for all parts on the cutting plan. Cutting in such a manner that the cutting head never travels over parts that have already been cut out.

Regardless of the users’ level of experience, “TiltPrevention” supports them with an ideal cutting strategy that can be automatically incorporated into the cutting plan. Users can carry out customised adaptations at any time using the simulation created by “TiltPrevention” —modify the nesting of parts, reposition the lead-in and lead-out points of the parts, and add micro-tabs where required.

 

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