HOME NEWS MECHANICS IN PILLS Intelligent spur gear hobs: size optimization

Intelligent spur gear hobs: size optimization

gennaio 03, 2024
In the complex world of spur gear manufacturing, the choice of hob size plays a crucial role.

Here are some key factors to consider when choosing a maker:

Cutting speed and feed: The cutting speed and feed per minute are decisive for the hobbing time.
Diameter: The balance between hob diameter and feed per revolution is truly delicate. Decreasing the diameter may require reducing the feeds, while increasing the latter may require a larger diameter. Here we can introduce the innovative concept of the "disposable hob" with small diameter and high cutting capacity.
Advantages of disposable hobs: Despite the similar cost of disposable hobs, the advantages are many, from the lower amount of steel used to the greater production efficiency by eliminating sharpening.

As with any technology, even the best, there are some compromises, here are some:

Quality vs. Efficiency: To achieve the specified gear quality you need to pay attention and consider the mechanical efficiency of the hob. Minimizing the diameter brings with it the maximization of the number of cutting edges, even if this can lead to a worsening of the helix of the toothing.
Number of starts and cutting edges: the number of starts influences the cutting time and the quality of the profile. Here some compromises are necessary when increasing the number of principles and certainly one must consider how this affects the quality of the gear profile.
Hob length: Hob length brings with it several challenges that must be considered and addressed by evaluating the optimal length-to-diameter ratio. Furthermore, it is necessary to act by considering different scenarios including those in which the choice of a long hob is advantageous without forgetting when this could be an unnecessary expense.

We know that most of the complexities are in the designer's choices of the right makers for the project. In fact, GSI stands alongside its customers in the choice of an increasingly crucial element in modern design.

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