Control of the milling mode of a thin-walled console plate by indirect indicators
DOI:
https://doi.org/10.15276/opu.1.71.2025.04Keywords:
milling, rigidity, deflection, thin plate, processing trajectoryAbstract
The article presents a theoretical study of the change in the deflection of a thin rectangular plate depending on the position of the point
of application of force simulating the load from the cutter. The modeling was carried out for two typical processing trajectories along the length
and along the width of the plate. The deflections and the corresponding stiffness values are calculated, the dependencies are obtained and their
features are interpreted. It is found that the adopted algorithm of the calculation is similar to the calculation algorithms used in existing CAE systems.
Based on this, it is proposed to use the data, in particular the plate deflection value, as an indirect indicator for controlling the milling mode. The
indirect indicators adopted as the initial ones are approximated as a power polynomial with a certain approximation reliability R2. It is proposed to
use the obtained polynomials to create the corresponding inversely proportional polynomials that determine one of the main indicators of the milling
mode the linear feed of the spindle. The software implementation of the proposed solution was carried out using an extended G-code, which
suggests the use of the proposed solution for a wide range of CNC milling machines. Practical testing of the obtained software solutions was carried
out, confirming their full operability. The research results allow increasing the stability of the milling process when processing low-rigid cantileverfixed
parts on machines without an active control system, including active feedback “part tool machine”. This approach allows using cheaper
machines while obtaining acceptable quality of machined surfaces, which, in turn, determines a decrease in the cost of manufactured products and
increases production efficiency.
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