The foundation was laid by the internal product development team for which test stands were built and developed. The key was years of experience. Now Hänchen offers complete test stands that are tailor-made to customer specifications.
For Hänchen these are "Ratio-Drive® projects" – tailor-made drive solutions, whereby the customer has only one contact person for the entire project. Such a solution can be integrated seamlessly into custom systems through customer-defined interfaces and is based on an integrated concept. Energy efficiency is extremely important in such systems.
Figure 1 Complete test stands are tailor-made to customer specifications.
Figure 2 The test cell for hydraulic products is software-controlled. Each test procedure is initiated from a bar code on the test specimen. Then the automatic test procedure starts.
Ratio-Drive® by Hänchen
Experience both in-house and at customer locations
In-house and customer projects were important steps on the way to becoming a supplier of complete test machines. This reflects many years of development experience – from cylinder construction to electronics, such as sensors for measuring displacement and force. This was followed by complete drive axles, now called Ratio-Drive®. Through these experiences as a system supplier, the company from Ostfildern near Stuttgart understood what the market really needs. That is why the company also provides whole machines complete with axle, frame and machine elements. Our own test stand for efficient and practical testing of sealing combinations and piston rod surfaces was in the making. Such a test machine was also made for the University of Stuttgart.
Another project of Herbert Hänchen GmbH & Co. KG is a new, self-developed and produced test field. It is intended to automate the final inspection of hydraulic cylinders, pressure intensifiers and other hydraulic products, and to ensure process reliability. Volker Kaiser, Quality Assurance Team Leader at Hänchen: "In the past, you had to know every process step in detail. Because in the past, employees controlled the inspection process manually. The test pressure used to be set manually, which was associated with certain discrepancies."
Test centre for hydraulic products
In the new test centre, the test procedure for every product specification is software-controlled. The test procedure is initiated from a bar code on the test specimen. Hänchen's proprietary test software accesses data from the ERP system and automatically sets the correct parameters, such as test pressure and traversing speed. At the end of the test, data such as pressure and speed are recorded by the program in a test certificate and archived in the corresponding customer folders of the document management system (DMS). The document can be then called up and passed on to the customer whenever necessary. This makes every test procedure both comparable and reproducible. A mounting fixture that was specially adapted to Hänchen's typical test specimens enables better and safer handling. It allows components, such as a hydraulic cylinders with an outer diameter of 25 - 500 mm, to be securely fixed. The length of the test cell was designed for a maximum component length of 2.50 m. Larger components can also be connected and tested outside the test cell.