Innovation and efficiency
Bernhard Grobusch GmbH, which currently has 28 employees, has developed over the years into a highly sought-after specialist for blow mold manufacturing and for gauge design and manufacturing. In addition to its strong technical expertise, the company’s success is also due to its high-performance manufacturing machines and Tebis AG's CAD/CAM software.
The primary customers of Bernhard Grobusch GmbH, which is located in the municipality of Inden between Düren and Aachen, are companies in the automotive supply industry that have come to appreciate Bernhard Grobusch GmbH's experience, flexibility and reliability. "We're not planning any extreme growth in personnel, but we’ll continue to expand our expertise and our technical capabilities with machinery and software solutions that enable us to meet the customer's requirements even more successfully," stresses Peter Grobusch, who, together with his brother Bernd, directs the company founded roughly 40 years ago by their father, a master model manufacturer. Initially, models for foundries began to be manufactured in the 1960s, and blow molds and injection molds, including bottled molds for the packaging industry, starting in the ‘70s, while the automotive industry has come to be an increasingly important customer since the mid-‘80s.
"We have repeatedly specialized in specific application areas so that we could hold our own against the major competitors as a small company with 20 to 30 employees," explains Grobusch. "That’s why we are currently focusing almost exclusively on molds and devices for blow molding as well as the manufacture of measurement and test gauges for quality assurance."
The product spectrum includes blow-molded parts for the air passages in engine compartments and in vehicle interiors – although complete ventilation systems are also produced as well as liquid containers and tank fill nozzles. The gauges developed and produced include testing and measuring devices for vehicle windows, headlight systems, interior trim parts, automobile door seals and the blow-molded parts mentioned above.
Grobusch adds: "We supply every gauge with a comprehensive measurement record; this is provided for the blow molds only on customer request. However, we’re changing over to more intensively testing all blow molds in order to provide the customer with optimal quality and reliability." A high-performance 3D CAD/CAM system is absolutely essential for this process. Grobusch explains this using the example of an injection mold for plastic bottles that was previously produced by model manufacturing and then digitized. However, the problem that repeatedly arose was that the two bottle halves were never precise mirror images.
But this could be very easily implemented with a 3D CAD system. That’s why Bernhard Grobusch GmbH decided to implement the Tebis CAD/CAM software in 1988, after having first acquired their initial CAD experience using AutoCAD. "The Tebis software with the AutoMill module was the first system we learned about that could mill across an entire series of surfaces," says Grobusch. "The other systems could only machine two or three sections of a surface together, which is unacceptable for manufacturing steel molds."
Tebis software with the AutoMill module was the first system we learned about that could mill across an entire series of surfaces.
Cost-effective manufacturing throughout the process
- Automated programming
- Standardized processes
- High process reliability
Bernhard Grobusch GmbH
Inden near Aachen, Germany