Design method for rubber free molded surface of node type product

Abstract

A design method for the rubber free profile of a node type product comprises the following steps: analyzing and calculating to obtain the effective bearing length L of a rubber body according to the interface size and rigidity performance requirements of the node products; meanwhile, assuming that a connecting line between the mandrel and the tail end of the rubber body between the mandrel and the outer sleeve is K1, selecting connecting points of the rubber molded surface among the midpoint of K1, the tail end N1 of the outer sleeve and the tail end N2 of the mandrel, sequentially connecting the tail end N1 of the outer sleeve, the connecting points and the tail end N2 of the mandrel through line segments, and enabling the connecting points to be in arc transition to obtain the final shape of the rubber molded surface, and moving the molded surface inwards to obtain the free molded surface of the rubber body. The rubber free molded surface can be quickly designed according to the structural characteristics of a traction node metal part, the rubber free molded surface can realize smooth deformation under the action of a large radial load, and the deformed rubber free molded surface is in an approximately straight state, does not have wrinkles and can meet the requirements of high bearing capacity and long service life of the traction node.

Description

technical field [0001] The invention relates to a design method of a rubber free profile, in particular to a design method of a rubber free profile of joint products, which can be used for traction joints, positioning joints, motor joints and ordinary ball joint products for high-speed EMUs Various types of elastic elements with large load-bearing conditions, including rubber free surface design. Background technique [0002] Node products usually use rubber to vulcanize the metal mandrel and metal jacket into a whole, which plays the role of both support and vibration reduction. For example, the traction nodes, positioning nodes and motor nodes of high-speed EMUs all need to meet the requirements of vibration reduction and noise reduction. In the design and manufacture process, a key consideration is the design of the rubber free surface under heavy load conditions. A good rubber free surface can greatly improve the load-bearing deformation capacity and fatigue performance ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the rubber free-form surface of the current node products needs to be designed separately and adjusted several times to meet the requirements, the present invention proposes a rubber free-form surface design method for the node products, which can be based on the structural characteristics of the metal parts of the node products , to quickly design a rubber free-form surface

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