Grenzebach Maschinenbau GmbH

From cast iron to steel casting to aluminum cast and forged parts: Grenzebach manufactures high-quality casting parts for industrial use. The casting parts are used in special machinery within the automation industry, such as industrial robots or machine tools. The parts are given the finishing touches at the Grenzebach machining center. 

Milling, lathe turning, drilling: We own all processing steps for casting parts. In the Grenzebach machining center we have access to the latest technology with a CNC and multi-axle machine park because high-precision machining is a must for us. We process the workpiece with highest flatness and surface precision. It goes without saying that we also integrate innovative technologies like friction stir welding. For our customers we apply all painting methods for casting parts in-house. The automated Grenzebach paint-shop stands for high-quality results.

For many years now we have worked side by side with reputable customers within the automation industry who profit from our experience with casting methods, processing, production, surface treatments and quality control. Our supply chain lets us choose from different types of castings to satisfy the demand for casting parts that are ready for installation and processed in accordance with the European and international quality requirements. 

We also design and build molds and models tailored to the needs of our customers for both individual and optimized serial production of high-grade casting parts. We strive for short lead times and increased value.

https://www.grenzebach.com/en/products/casting-parts/

Friction stir welding: 6-axes-FSW robot systems

The robot-based FSW systems from Grenzebach are characterized by their flexibility, as well as the possibility to realize difficult 3D welding curves. R&D robot cells from Grenzebach are ideal for Research & Development projects. These cells can be combined with any additional equipment, such as welding tables, measuring equipment or media supply for the highest flexibility.

Friction stir welding

The Friction Stir Welding technology (FSW) by Grenzebach enables the joining of technically pure metals, alloys and mixed material compounds while providing a solid bond of exceptional quality. During the FSW process a rotating, wear-resistant welding tool generates frictional heat at the welding zone. The material becomes malleable and is stirred along the welding path by the welding tool without reaching the melting temperature of the joining materials. The stirred material is compacted by the tool shoulder and a solid, media and pressure-tight joint between the work pieces is formed. Compared to conventional fusion welding processes (e.g. arc welding), FSW does not require additional welding wire, inert gas or complex exhaust systems. Furthermore, FSW does not generate any discernible noise, emissions or optical radiation.

https://www.grenzebach.com/en/products/friction-stir-welding/fsw-robot-system/

Friction stir welding: Double spindle FSW machine D-DSM

With the double-spindle FSW gantry systems in the D-DSM series, Grenzebach enables even faster and more efficient work. D-DSM stands for Double-Spindle Dynamic Stirring Machine. By adding an additional gantry bridge to the DSM, users have two independently operating welding heads at their disposal.

The second gantry bridge means that cycle times can be cut in half, resulting in economical production at high volumes. The two welding heads work independently of each other. This allows you to weld in parallel at different points on a workpiece during friction stir welding, so large components can be processed efficiently. Space and equipment requirements in production are reduced, while efficiency is increased.
The overall investment is significantly lower. In addition, space is freed up for other applications.

Friction stir welding  

The friction stir welding technology (FSW) by Grenzebach enables the joining of technically pure metals, alloys and mixed material compounds while providing a solid bond of exceptional quality. During the FSW process a rotating, wear-resistant welding tool generates frictional heat at the welding zone. The material becomes malleable and is stirred along the welding path by the welding tool without reaching the melting temperature of the joining materials. The stirred material is compacted by the tool shoulder and a solid, media and pressure-tight joint between the work pieces is formed. Compared to conventional fusion welding processes (e.g. arc welding), FSW does not require additional welding wire, inert gas or complex exhaust systems. Furthermore, FSW does not generate any discernible noise, emissions or optical radiation.

https://www.grenzebach.com/en/products/friction-stir-welding/fsw-gantry-machine/

Utilize the gantry machine system concept for your special component. The 4-axis gantry system is designed for high axis dynamics and precise weld path guidance in the HYDROPOL® machine bed, which is specially designed for very high stiffness and low dynamic compliance and deformation.

The individual work areas of the 4-axis gantry systems allow you to remain flexible. Even large components such as battery trays measuring up to 1.50 x 2.00 m can be accommodated. You can rely on a robust process that delivers reliable, reproducible weld seam quality across the entire working range.

The gantry machines are designed to provide good accessibility for loading and unloading with a robot, even for large assemblies. Of course, the complete work area is accessible while still providing protection. The maintenance access points at the rear make it possible to access control hardware and the central power supply at any time.

The friction stir welding technology (FSW) by Grenzebach enables the joining of technically pure metals, alloys and mixed material compounds while providing a solid bond of exceptional quality. During the FSW process a rotating, wear-resistant welding tool generates frictional heat at the welding zone. The material becomes malleable and is stirred along the welding path by the welding tool without reaching the melting temperature of the joining materials. The stirred material is compacted by the tool shoulder and a solid, media and pressure-tight joint between the work pieces is formed. Compared to conventional fusion welding processes (e.g. arc welding), FSW does not require additional welding wire, inert gas or complex exhaust systems. Furthermore, FSW does not generate any discernible noise, emissions or optical radiation.

https://www.grenzebach.com/en/products/friction-stir-welding/fsw-gantry-machine/