an expansion cone
A technology of expansion cone and expansion tube, which is applied in the field of expansion cone, can solve problems such as built-up edge, achieve the effects of improving lubrication conditions, preventing rupture, and avoiding stress concentration on the cone surface
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[0025] The expansion cone of the present invention will be described in further detail below in conjunction with the accompanying drawings. An expansion cone, the expansion cone is cylindrical, including the first section of the cone 1, the second section of the cone 2 and the third section of the cone 3 connected in sequence along the axis of the expansion cone, the expansion cone is provided with The through hole 4 penetrating in the axial direction, the outer diameter of the first section of the cone 1 is smaller than the outer diameter of the third section of the cone 3, and the part of the surface of the second section of the cone 2 adjacent to the first section of the cone 1 is elliptical Part of the surface of a sphere, such as figure 1 As shown, that is, the surface shape of the right section A of the second section cone 2 is a part of the surface of an elliptical sphere, such as figure 1 Middle right section A and figure 2 The right segment A indicated by the solid...
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