Vibration isolating bushing and its manufacturing method
This invention relates to a vibration isolating bushing, for example, built into a suspension system, an inside diameter of one edge ( 4 ) of an inner cylinder ( 1 ) being made larger than that of the other edge ( 6 ). The outside diameter of the thinner edge ( 4 ) is enlarged by applying pressure w...
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Zusammenfassung: | This invention relates to a vibration isolating bushing, for example, built into a suspension system, an inside diameter of one edge ( 4 ) of an inner cylinder ( 1 ) being made larger than that of the other edge ( 6 ). The outside diameter of the thinner edge ( 4 ) is enlarged by applying pressure with a pressure forming jig( 26 ) to the thicker edge surface ( 25 ), with the thinner edge surface ( 20 ) of the inner cylinder ( 1 ) abutted on a base ( 23 ). After completion of enlargement of the outside diameter of the thinner edge ( 4 ), the outside diameter of the thicker edge ( 6 ) is enlarged by further pressure with the pressure forming jig ( 26 ), this process thus capable of enlarging the outside diameter of both edges ( 4 ), ( 6 ) with one continuous working step. Surface unit pressure applied by another member can be made smaller by enlarging the outside diameter of the thinner edge ( 4 ), and the outer cylinder ( 2 ) can be prevented from being slipping out from the inner cylinder through the enlargement of the outside diameter of the thicker edge ( 6 ). |
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