The Swiss company Humbel has been involved in gear production since 1928—specializing in particularly sophisticated types of gears and transmission components, eventually evolving into a full-service supplier. At their facility in Kradorf, approx. 20 kilometers (12 miles) from St. Gallen, they produce both individual parts as well as complete assemblies. The company recently expanded their machine inventory to include a VL 4 vertical turning center by EMAG. — We spoke with Alex Humbel, Managing Director of Humbel Zahnräder AG in Kradolf, on the challenges facing gear producers, the importance of E-mobility, as well as their company strategy.
The EMAG Inverted Spindle Pick-Up Lathe process provides for a significant improvement in accuracy versus that of a sub-spindle lathe.
Lathes with sub-spindles pass a part from one rigid work holding system to another. This does not allow for any misalignment of the two spindles. The first spindle cannot release a part until the second spindle has a secure grip on it. Allowing for mismatches on a split turned dimension such as a bore. The accuracy and quality of the workpieces that are produced from this system are compromised because of this process.
The automotive world is constantly changing and improving. The industry strives to create vehicles with better fuel economy, while also increasing safety and reliability.
The introduction of hybrid and electric alternatives are becoming more popular, and in the years to come we will see these options continue to grow. With this change, certain components of today’s gas driven engines will be replaced with new components and technologies.
Today’s competitive talent marketplace requires small and medium contract manufacturers and OEM’s to make the most of the talent they have. Skilled, experienced machinists are hard to find and having them tied up hand-loading parts into a lathe is seldom the best use of talent. So – how does a successful small to mid-sized shop meet their customers’ production requirements with the existing talent pool?
EMAG’s Standard Modular Vertical Turning Solutions for chucked and shaft like components continue to gain market share within North America.
For years EMAG has continued to develop and invest in new technologies that make them the leading OEM of Manufacturing Systems for Precision Metal Components. We’ve become known world-wide for our Vertical Turning technology along with our ability to provide complete process chains to the world’s leading Automotive OEM. We’ve become the prominent leader in gear box, engines, and chassis solutions within the automotive industry but can also provide solutions within Energy, Aerospace, Agriculture, Construction and Oil Field.
Increasing cost pressure, high demands on part quality and frequent change of batches – the manufacturing of car brake discs is a difficult field. Particularly in the spare parts market, where users must request individual machining solutions that can be retooled for new workpieces without long downtimes.
The VLC 200 GT is loaded at by the integrated pick-up spindle. The process starts with hard pre-turning of the shoulder and the bore hole in quick succession. Only a few micrometers of material are then left to be removed from the automotive gear by the subsequent grinding process, using either aluminum oxide or CBN grinding wheels.
Transmission manufacturing is among the most innovative areas of passenger vehicle production: This central component has to ensure a high level of driving dynamics, while keeping fuel consumption low at the same time. Transmissions are therefore becoming smaller and lighter, and provide a higher number of speeds. The individual gearwheels are a main focus of the developers. Their production in extremely high volumes requires a high level of efficiency—at high precision, high speed, and highly controlled.
Maximum Efficiency in Shaft Production. Short cycle times, high precision and safe processing are among the outstanding attributes of shaft machining on the turning machines of the VT series. These lathes literally turn the classical horizontal machining process on its head.