FASTENING CONNECTION Russian patent published in 2013 - IPC F16B19/00 F16B5/00 

FIELD: machine building.

SUBSTANCE: fastening connection includes a rod equipped with a countersunk head installed into a hole of attached parts, a washer, a nut or a crimping ring. Countersunk head has angle of tapering α within 20° to 45°, and depth H₀ of a seat for the countersunk head and its angle of tapering α₀ are equal to

where H - height of countersunk head; α - angle of tapering of countersunk head; Δ_h=D-D₀ - nominal preload as to countersunk head; Δ=d-d₀ - nominal preload as to the rod; D and D₀ are diameters of countersunk head and seats for countersunk head respectively; d and d₀ are diameters of the rod and holes for the rod respectively. Diameter of countersunk head is larger than diameter of the seat by 0.8%÷2.5%, and angle of tapering of countersunk head is more than angle of tapering of the seat for countersunk head by 2°÷3°.

EFFECT: higher reliability of the connection.

4 cl, 8 dwg