Synthesis of a Geometric Adaptive Straightness Control System for Shaft Straightening

摘要

In order to minimize Straightness error of deflected shafts, a geometric adaptive Straightness control (GASC) system is studied. A three-point-bending and a multi-step straightening process has been developed for the GASC. Load-deflection relationship, on-line identification of variations of material properties, on-line springback prediction, and real-time hydraulic control methodology are studied for the three-point-bending processes. Selection of a straightening point and direction, desired permanent deflection, and supporting condition are derived from fuzzy inference and fuzzy self-learning method in the multi-step straightening process. An automatic straightening machine has been fabricated by using the developed ideas. Validity of the proposed system has been verified through experiments.