A sheet metalworking company from Switzerland shows how the right plant technology can be used to implement efficient processes and manufacture high-quality components. With a LISSMAC machine for deburring and edge rounding on both sides, it produces high-quality parts in a short time.
Meyer Blech Technik AG has its headquarters in Grosswangen in Switzerland and is a classic sheet metalworking company. As a contract manufacturer, the company operates in a number of different sectors.
Accordingly, it is also important for Meyer Blechtechnik that the machine pool is forward-looking and designed for flexibility. Their latest acquisition is a grinding and deburring machine from Lissmac.
“The SBM-L G1S2 is suitable for highly effective two-sided deburring and edge rounding of punched, laser and fine plasma cut workpieces in one single pass. It distinguishes itself over conventional grinding machines by more efficient machining times and up to 60 per cent saving on working time. The new machine achieved an important expansion in capacity for Meyer. This was a necessary investment due to the company’s continuous growth and the large number of different parts. At least 3.4 million parts were produced in 2018, using around 5,000 tonnes of materials.
As the new acquisition was being planned, the owners Urs and Alex Meyer and General Manager Reto Thalmann visited various exhibitions to gain an overview of the current technology. Naturally they had some problematic parts machined at various suppliers, so that they could obtain comparable, practical results. Ultimately the efficiency and associated time saving with the Lissmac technology, as well as the uniform, deburred finish, proved convincing.
“The decision to invest in this exact machine was made very quickly. We were familiar with the technology because an almost identical system has been in use at the Großwangen site for around 3 years. It has more than proven itself and so at Blechexpo 2017 we decided to buy another”, says Thalmann.
So the benefits, particularly for machining aluminium sheets, were well known. That's a very big field for the Swiss company, who process more than 500 tonnes of aluminium a year.
“The machine operates efficiently because it deburrs the top and bottom simultaneously. The deburring process is also kind to the hands. In other words: you cannot cut yourself and you can handle the metal sheet without problem. The parts that are manufactured are often installed in machines, so that’s important” says Reto Thalmann, naming some of the benefits.
Particularly with aluminium, the great benefit of dry grinding and deburring is that the parts are free from moisture, so there is no staining. When parts will be welded afterwards, the additional benefit of dry-working is that the cut edges are not contaminated by the emulsion required for wet-working. That's part of the reason why chrome steel parts as well as aluminium parts are machined on the Lissmac. As a result, the new installation is a great addition to the single-sided wet grinding machines.
Another benefit of this machine is that it can machine parts with dimensions of 1500 mm x 3000 mm.
Quality, price and delivery times must all be right. Reto Thalmann knows that grinding and deburring processes need to be inexpensive from the customer’s perspective. That's why the surface appearance is quite a challenge. This much is certain: when the turnaround times are fast, as they are with two-sided machining on the Lissmac, then the machining costs are also lower. The ability to retool quickly from steel or chrome steel to aluminium also contributes towards the efficiency of the process. What’s more, there is no contamination on the cut edges, as is the case with wet deburring, and so no problems when welding. Finally, dry working requires less maintenance and cleaning.
And since early 2019 Lissmac has a service partner locally in Switzerland: that completes the package.
Report: Annedore Bose-Munde / Pictures: LISSMAC
Please also read the case study of the online edition of the trade magazine BLECH BLECH https://www.blechonline.de/bis-zu-60-schnelleres-entgraten-und-kantenverrunden