Complex geometries are manageable. The challenge is no longer the “if,” but the system behind it. The globoid worm is a good example of this. One of the most demanding geometries in gearbox technology. Not new—but previously complex.

From specialized processes to an integrated solution

Globoid worms are traditionally manufactured through multiple specialized processes: turning, milling or skiving, followed by grinding, distributed across different machines. These process chains mean: multiple setups, additional tolerance chains, high setup and logistics effort. The Multigrind® Radical breaks this principle. Complete machining through precision grinding: without pre-machining, without reclamping, directly from solid material. The result is a continuous, stable process.

Precision arises from the system

Maximum precision is not a single feature here. It emerges from the structure of the process. Every additional setup leads to: new references, positional deviations, and cumulative tolerances. Manufacturing in a single setup results in: high form and positional accuracy, reproducible quality, and stable functional relationships. Precision is not corrected afterward—it is created within the process.

Surface as a functional parameter

The performance of the globoid worm depends significantly on the surface. In the grinding process on the Multigrind® Radical, the following are achieved: ultra-fine surface structures, uniform material removal, stable process conditions. This directly affects functionality: reduced friction, stable lubricant film, increased smoothness, longer service life. Tribological properties are not improved afterward—they are deliberately generated within the process.

Performance of the geometry

The concave geometry of the globoid worm enables surface contact through the enclosure of the worm wheel. This leads to: high load transmission, uniform load distribution, smooth operation. Torque transmission can be increased by 30–60% compared to comparable solutions within the same installation space. The prerequisite is precise implementation of the geometry across the entire contour.

Economic efficiency through process reduction

The economic advantage does not come from faster machining. It results from reducing the process chain: fewer machines, shorter setup times, reduced logistics, lower susceptibility to errors. This makes manufacturing particularly attractive for: prototypes, small series, highly complex components.

Relevance for new applications

High torque density within a compact installation space is becoming increasingly critical. Especially in: robotics, humanoid systems, and compact drive solutions. The geometry itself is established. Manufacturing has been the limiting factor—until now. With the Multigrind® Radical, this boundary is shifting.

Software as an enabler

A key part of the approach lies in the software: freely definable geometries, direct implementation from design data, intuitive programming. This enables the creation of the globoid worm: without upstream process steps, matched to the mating component, directly from the data.

Conclusion

The production of globoid worms has traditionally been characterized by process chains. The Multigrind® Radical introduces a different approach: one machine, one setup, one continuous process. Complex geometries are no longer manufactured across multiple stages—they are created as an integrated part of the system.