Patent ID: 9360031
Filing Date: 2016-06-07
CPC Classification: B21J,B29C,B29L,F16B,Y10T

Claim Text:
1. A fastening method of composite material parts, comprising: measuring a first smoothness of a first fastener arranged in a first countersink through-hole formed in a first work to be fastened as stacked composite material parts before fastening the first fastener, the first smoothness being a distance between a surface of the first work and a head surface of the first fastener in an axial direction of the first countersink through-hole; determining a second countersink depth based on the first smoothness which is measured before fastening the first fastener; forming a second countersink through-hole with the second countersink depth in a second work to be fastened as stacked composite material parts; and fastening the second work by using a second fastener arranged in the second countersink through-hole.