A numerical control machining control method and system for a turbocharger housing

Abstract

The application relates to the technical field of numerical control machining and intelligent manufacturing, and discloses a turbocharger shell numerical control machining control method and system. The method comprises the following steps: acquiring an infrared photoelectric signal and a tool pose vector; calculating an absolute temperature variation and solving a full-field thermal strain tensor according to the infrared photoelectric signal, so as to obtain a six-dimensional pose variation; performing compensation calculation according to the tool pose vector and the six-dimensional pose variation to obtain preliminary adjustment parameters, performing smoothing comparison to obtain an optimized correction amount, and further generating a thermal compensation track; calculating a size deviation residual error in combination with the thermal compensation track and a discrete touch point signal, inverting a preset dynamic initial stiffness to obtain a stiffness reduction coefficient in combination with a theoretical aperture deviation, and calculating a tool relieving error amount; and performing inverse kinematics solving according to the tool relieving error amount, so as to obtain a dynamic compensation instruction. The method can effectively eliminate machining thermal deformation and tool relieving physical errors, and improve the batch machining precision of key apertures.

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