The CPAP generators produced by whr Hossinger Kunststofftechnik and used to provide newborns with a reliable air supply must be sealed as tightly as possible, and the components must be extremely precise. Since the family-run company – located in northern Bavaria (Germany) – introduced the latest generation of the ZEISS O-INSPECT multisensor measuring machine, it has increased the precision of its in-house measurements and also shortened its measuring times.
The principle of the CPAP generator: oxygen-enriched air is delivered to the baby via a tube and is administered with slight overpressure. whr Hossinger combines the individual components of the CPAP generator using a connector system instead of an adhesive. Yet a generator is only airtight if the individual components have been manufactured with absolute precision. The challenge: wall thicknesses of only three tenths of a millimeter, tolerances of a few hundredths of a millimeter, freeform components with a complex shape and different product colors made quality inspection difficult, protracted and sometimes costly with the optical measuring machine this mid-sized company had available.
To reduce the number of measurements outsourced to external service providers and nevertheless guarantee a high level of quality, the company introduced the ZEISS O-INSPECT multisensor measuring machine in 2014. It combines three measuring principles in one machine. However, the volume of the measuring machine was still too small for the large workpieces manufactured at whr Hossinger. Therefore, the company seized the opportunity to play its part as a pilot customer of ZEISS in bringing the latest generation of the multisensor measuring machines to market. One of its outstanding features is a larger measuring volume of 500 x 400 x 300 mm.
The use of the multisensor measuring machine has paid off for whr Hossinger: "Contact, optical, white light sensor: the interaction of these three measuring methods is unbeatable because it offers us great efficiency," says impressed Quality Management Officer, Christian Bindl. Not only does the company outsource fewer measurements, but, with the ZEISS O-INSPECT, Bindl and his colleague can now also conduct an abundance of measuring tasks with a high degree of accuracy and repeatability. Otherwise, they would require three different measuring machines. The Quality Manager says that "we have doubled the precision in comparison to our previous measuring machine. And our measurements would also be a lot more time-consuming without the white light sensor." According to Bindl, the ZEISS O-INSPECT has given the metrologists "room to breathe."