CFRTP板材の光加熱援用インクリメンタル成形法の開発

抄録

This paper presents a proposal of the developed incremental forming method with optical heating system for CFRTP blank sheets. The blank sheet is fixed to a blank holder and is locally heated by a halogen lamp set under the sheet. The heated region of the blank sheet is formed by a spherical punch with reciprocating motion by a hammering unit, which is set opposite to the halogen lamp through the sheet. Discontinuous fiber sheet, which thickness is 0.5 mm, was used as blank sheets. The temperature distribution around the heated region was measured, and the temperature of the heated region, the same as punch diameter of φ5 mm, reached approximately 200 °C, at which the matrix of the blank sheet can deform plastically. The convex formed shape followed the punch shape can be obtained by the single point hammering without the sheet feed as simple forming conditions, and the superiority of the developed forming method was verified.