Extraordinary order went via Japan


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Extraordinary order went via Japan

Non-stop 0.4 millimetre spherical cutting over a whole month.

Two extraordinarily complex items were processed by Hjerno's machines during Christmas and New Year. And the job was actually not completed until January.

One thing is the long cutting time on a single item. Another is the relatively large depth the milling had to be done with.

"It is very rare that you mill that deep with a 0.4-millimetre spherical cutter. Not to mention over such a long period of time," managing director Aage Agergaard says.

In production throughout 2018
The background for the unusual order was actually an inquiry from Japan, from our Japanese machine supplier Makino Milling Machine Company.

"Makino received an inquiry from a European business connection that required milling of some ultra-precise items. That is why Makino was asked if they knew of any suppliers in Europe, who had the equipment to handle that. And Makino knew that we did", Aage Agergaard explains.

This led to a pre-project study that the customer approved and subsequently a single batch production of two items over Christmas and New Year. Something, which went so well that that the customer has ordered another series of items that will most likely be produced through all of 2018.

The specific nature and use of the items remain a secret, but it involves plates of 220 x 440 millimetres in the material Rigor with a hardness of approximately 58 HRC. The milling process of the plates is carried out by a 0,4-millimetre spherical cutter from OSG Scandinavia and processed on a Makino V33 in different CNC centres.

”Of course it is a bit of gamble to let a 0,4 milling machine work non-stop for a whole month on a material of 58 HRC and then bet on it to turn out right. Welding is not allowed, so if something had gone wrong, we would have to just throw the plates away and start over. But everything turned out right, even though we experienced a two-second power failure in the middle of it," Aage Agergaard says.

More orders outside of the plastics industry
The order furthermore differs from many of our other orders as we are not dealing with a traditional item for injection moulding, but rather an item that is to be used in a completely different industry than plastics.

"Because of our size and our investments in new technology we are now able to produce a long line of items that are not just used for injection moulding", Aage Agergaard says.

"And thanks to orders like this one we have gradually acquired a lot of know-how and knowledge, which now benefits us.“