HOLE-SHAPE MEASURING APPARATUS AND HOLE-SHAPE MEASURING METHOD

摘要

A hole-shape measuring apparatus is provided with a hole diameter measuring mechanism which measures the diameter of a flush bolt hole, and a countersunk head depth measuring mechanism which measures a countersunk head depth. The hole diameter measuring mechanism has a hole diameter measuring rod configured so as to be inserted into a constant portion at a tip portion and displaced according to the diameter of the constant portion, and a hole diameter measuring sensor which measures the amount of displacement of the hole diameter measuring rod. The countersunk head depth measuring mechanism has a countersunk head depth measuring rod configured so as to be inserted into a countersunk head portion at a tip portion and displaced according to the countersunk head depth, and a countersunk head depth measuring sensor which measures the amount of displacement of the countersunk head depth measuring rod.

主权项

1. A hole-shape measuring apparatus for measuring a shape of a flush bolt hole provided in a target member which includes a composite material,
wherein the flush bolt hole has a countersunk head portion which is connected to an opening provided in a principal surface of the target member and has a shape in which a diameter decreases as a depth from the principal surface increases, and a constant portion which is connected, at one end, to a bottom portion of the countersunk head portion and connected, at the other end, to an opening provided in a back surface of the target member and has a constant diameter, the hole-shape measuring apparatus comprising: a hole diameter measuring mechanism which measures a diameter of the constant portion; and a countersunk head depth measuring mechanism which measures a depth of the countersunk head portion where a diameter becomes a reference diameter determined in advance, as a countersunk head depth, wherein the hole diameter measuring mechanism has a hole diameter measuring rod configured so as to be inserted into the constant portion at a tip portion and displaced according to the diameter of the constant portion, and a hole diameter measuring sensor which measures the amount of displacement of the hole diameter measuring rod, the countersunk head depth measuring mechanism has a countersunk head depth measuring rod configured so as to be inserted into the countersunk head portion at a tip portion and displaced according to the countersunk head depth, and a countersunk head depth measuring sensor which measures the amount of displacement of the countersunk head depth measuring rod, and the hole diameter measuring rod and the countersunk head depth measuring rod are provided so as to become coaxial.