One example is a six-meter Stöckel grinding machine originally built for the production of large stamping, forming and press brake tools. The machine enabled its owner to grind oversized tool components while maintaining the flatness, parallelism, profile accuracy and surface quality required for precision toolmaking.

Applications of this scale require more than simply extending the bed of a conventional grinding machine. As machine dimensions increase, so do the effects of temperature changes, vibration and structural deflection. The complete machine must therefore be engineered as a stable and integrated system.

A defining feature of the Stöckel FD series is its natural-granite machine structure. Granite provides excellent thermal stability, vibration damping and long-term dimensional accuracy.

Compared with common steel and cast-iron structures, granite expands less as temperatures change and is less sensitive to short-term fluctuations in the surrounding environment. Its strong vibration-damping characteristics also contribute to improved surface quality and more stable grinding conditions.

Stöckel hand-laps the guideways to establish the required machine geometry. Combined with the rigidity of the portal design, this creates a stable foundation for precision grinding across exceptionally long workpieces.

The Stöckel FD series is available with grinding areas ranging from 800 × 400 mm to as much as 6,000 × 1,500 mm. Depending on the application, machines can be equipped with V-flat slideways, linear guideways or hydrostatic guideways, as well as different table-drive and dressing technologies.

With the appropriate CNC control and dressing system, the machine can perform surface, contour and profile grinding operations. Additional axes, measuring probes, filtration equipment and automation can also be integrated when required.

Typical applications include:

• Large stamping and forming tools
• Tool and mold plates
• Machine beds and guideways
• Long wear components and shear blades
• Precision rails and guide elements
• Oversized components requiring tight flatness and parallelism
• Large components with demanding contours or profiles

Following a change in the original owner’s manufacturing requirements, this six-meter Stöckel machine is now available for purchase. For a North American manufacturer requiring large-format surface, contour or profile grinding capacity, it represents a rare opportunity to acquire a machine of this size without the normal engineering and manufacturing lead time associated with a new custom-built system.

The machine also demonstrates Stöckel’s broader ability to engineer precision grinding solutions for applications extending far beyond conventional machine dimensions.

Whether the requirement involves this available machine or a newly built system, involving Stöckel and Rey Technologies early in the project allows the machine configuration, guideway technology, controls, dressing system and peripheral equipment to be matched to the actual workpiece and process.

Large components leave little room for compromise. The machine must not only accommodate the workpiece, it must maintain precision throughout the entire grinding travel. That combination of size, stability and accuracy is where Stöckel stands apart.