Technical Principals of Harmonizer

Operation of the HARMONIZER is a convergent technique. The system drives the user to determine the optimum highest stable spindle speed (within the supplied range). The HARMONIZER® will also report if no stable speed exists. Due to the nature of sound fields and the highly focused frequency behavior of machining and chatter, the HARMONIZER® can detect very low levels of chatter when used properly.

What makes the HARMONIZER work

The following information explains the general spindle speed selection technique for avoiding chatter. This selection technique is the basis of the HARMONIZER® package. Fundamental Concepts: Several fundamental concepts that exist in combating chatter using spindle speed selection are the following:

· Axial and radial depth-of-cut have a direct and proportional affect on the stability of machining.

· Spindle speed has a large deterministic affect on stability.

· Chatter frequency is related to the dominant natural frequency and spindle speed.

· Chip loads above a small minimal level do not strongly affect stability, only tool displacement.