FIELD: machine building.;SUBSTANCE: invention relates to the fixing device, that can fix the fixed element by one part insertion in the other part, and is directed to increase operability of the joint during one element insertion in the another one. The fixing device includes: first element containing the flange section and the neck section outgoing from the flange section, creating hole for insertion, opened at the flange section, divided around the longitudinal axis, and having the guided section on the internal periphery area of the hole for insertion; the second element having the guided section located at its end in the direction towards the base, and indented in the hole for the first element insertion such, that the guided section will be in contact with the guided section, and will expand the neck section. The guided section has bent surface having tangent angle varying relatively the longitudinal axis in the contact point with the guided section from the section on the side of end towards the section on the side of base, and force of insertion in the first element in each contact force is kept approximately permanent.;EFFECT: improved fixing.;2 cl, 9 dwg
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