Study on Critical Angle in Single-point Incremental Forming with Hydraulic Supporting
Uneven thickness distribution was the main reason for affecting product performance and forming quality when single-point incremental forming the thin-walled parts with complex shapes.Hydraulic supporting was introduced into the single-point incremental forming process,and a hydrau-lically supported single-point incremental forming process was proposed,uniform distribution of thickness was promoted by adding flexible support to the overhanging sheets.Conical parts with dif-ferent wall angles were formed by single-point incremental forming of A11060 sheets under the auxilia-ry supports of hydrostatic and variable pressure,the effects of hydrostatic parameters and variable pressure schemes on the thickness distribution and the critical angle of thickness uniformity were quantitatively analyzed through numerical simulations and experimental studies.The results show that the favorable hydrostatic pressure range is as 0～0.18 MPa for the critical angles of uniform thickness distribution,and the most favorable hydrostatic pressure value is as 0.17 MPa.Compared with unsup-ported single-point incremental forming,the hydraulically-supported single-point incremental forming process may increase the critical angle of thickness uniformity by 7°,which effectively improves the uniformity of thickness distribution and forming performance of the sheets.
incremental forminghydraulic supportcritical anglethickness distribution
国家科技期刊平台
NSTL
万方数据
维普
