公开(公告)号：US20240024993A1

公开(公告)日：2024-01-25

申请号：US18350921

申请日：2023-07-12

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Fuji WANG ,  Hongwei ZHAO ,  Rao FU ,  Meng ZHAO ,  Dekun YIN ,  Zhenyuan JIA

IPC: B23P15/32 ,  B23P15/46

CPC classification number: B23P15/32 ,  B23P15/46

Abstract: The present invention belongs to the technical field of composite material processing, and relates to a hole making tool for aramid fiber-reinforced plastic and a design method thereof. The drill bit has a step reversed point angle structure, which can reduce a trust force during drilling and effectively cut off a high toughness aramid fiber, thus to improve the hole making quality of an AFRP-related component. It is proved that the new tool can significantly improve the hole making quality of an AFRP component, improve the service life and safety degree, and greatly reduce the processing cost. Therefore, the present invention has a broad application prospect in the fields of aerospace, military industries and civil application.