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Joskin Group adopts automated programming

The Joskin Group is a European leader in agricultural transport machinery (slurry tankers, spreading tools, livestock trailers, tippers, silage boxes, etc.). For over 15 years, they have trusted Valk Welding for their welding robot solutions, but they want to go further in terms of software and programming. The group is testing the use of ARP powered by ArcNC combined with 3D scanning of their welding jigs for medium-sized parts.

Joskin Group

Located in the heart of the Entre-Vesdre-et-Meuse region, in Herve country, east of Liège in Belgium, a grassy agricultural plateau known for its Herve cheese. This is where the headquarters of the Joskin Group is located, a company that has made a name for itself in agricultural machinery. “It was my father, Victor Joskin, who founded the company in 1968, initially an agricultural contracting business, thanks to the equipment of my grandparents’. My father then invested in his own equipment to strengthen the fieldwork service offered to other farmers,” recalls Didier Joskin, CEO and production manager of the group.

But Victor Joskin didn’t stop there. He then repaired his own machines, then those of his clients, which led him to open a real repair service, and then he imported equipment that was not available in the region. Gradually, the range of distributed brands expanded, and the company then abandoned agricultural contracting to focus on repairing and importing machines. Didier Joskin continues: “In 1984, in a difficult economic context, my father decided to produce his first slurry tanker to continue offering his clients machines at reasonable prices. And just a few years later, the company had its first production plant.”

Today, the group employs over 870 people with an annual consolidated turnover of 140 million euros across five production sites in Soumagne and Thimister-Clermont (Belgium), Trzcianka (Poland), and Bourges and La-Vieille-Lyre (France).

The Valk Welding team was the most proactive

Regarding MIG-MAG welding, the group acquired its first robots in 1994. But in the mid-2000s, they were no longer satisfied with their robotic welding solutions. “Programming had become very complicated with each new part, everything had to be recalibrated every time a welding jig was put back in place, etc. Unable to find a suitable solution, we even wondered if we should switch back to manual welding when launching the Polish site. But that didn’t make sense, and we persevered by restarting with the three most recent robots and new personnel,” recalls Didier Joskin.

Having regained confidence in welding robots, the group’s management decided in 2007 to acquire new machines. Among the various manufacturers consulted, the choice fell on Valk Welding. “Our problem was the presence of deformations on hydraulic cylinders (actuators) during robotic welding. The Valk Welding team was the most proactive: they first proposed a solution involving cooling during welding – it wasn’t very practical, but it worked – then they assured us that we could do without this cooling system by finding the right welding parameters. This was done, and we quickly ordered more robots from Valk Welding,” says Didier Joskin.

In total, the group has 15 operational robotic welding installations from Valk Welding: mainly H-robots, two Z-robots with mobile tailstocks up to 4 meters, three specific robots on rails, and three large robots associated with manipulators for welding very large parts – the tipper boxes can measure up to 8.7 x 2 x 2.5 meters (L x H x W) and the livestock trailer boxes up to 9 meters. “To weld such large parts, we had to take some precautions, such as making sufficiently precise parts on a jig. Today, there are technologies such as Valk Welding’s ARC-EYE camera joint tracking,” says Didier Joskin.

Connecting 3D scanning of jigs to ARP Powered by ArcNC

The group has been using the DTPS software for years to program the welding of large parts, but not small or medium components. One reason is that the company does not have the jigs drawn in 3D, and without them, the DTPS software does not know where the stops, clamps, and other elements holding the part are, all obstacles the robot must avoid.

“Five years ago, we tested a solution where we scanned the jigs to retrieve a model used in DTPS. While this reverse engineering technology worked, the software was not advanced enough: the times were too long, and the files to manage were too large,” regrets Didier Joskin. “We conducted new tests with a 3D scanner acquired at the beginning of 2024, whose software allows us to clean the data easily and quickly to have the lightest possible file.”

And the company uses this information in the new ARP powered by ArcNC software from Valk Welding. “This is a test phase, in which we connect our reverse engineering method with this automatic programming software based on artificial intelligence (AI). It provides us with a pre-processed program, which still requires adjustments (welding parameters, for example) in DTPS before being injected into the robot. The initial results obtained on medium-sized parts, where online programming time on the robot is more significant, are encouraging. But the goal is to have a program generated by ARP powered by ArcNC as complete as possible and achieve tenfold gains in programming time for very large complex parts,” says Didier Joskin.

And the 100% family-owned Belgian group can count on its partnership with Valk Welding to further strengthen its position as a European leader, and even a world leader in some markets. They have already ordered two new robotic installations equipped with the latest Panasonic G4 controller and patented ARC-EYE Adaptive technology for their Soumagne site, which allows real-time adjustment of welding process parameters.

www.joskin.com

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