Spring air hole sleeve structure performance analysis method

Abstract

The invention discloses a spring air hole sleeve structure performance analysis method. The method comprises the following steps: selecting an air inlet section of a spring air hole sleeve as a research object, modeling an area through which fluid flows by using CFX software in computational fluid dynamics, setting physical property parameters for a basin medium, and setting boundary conditions ofa basin according to actual conditions; simulating and researching the change of the taper angle and spring stroke structure parameters of the upper end part of the valve rod of the air inlet sectionof the spring air hole sleeve on the fluid flow parameters of the air inlet section of the spring air hole sleeve; selecting common spring steel as a reference item of spiral spring raw materials, additionally selecting two spring materials, and carrying out analysis in the mode that finite element numerical simulation and traditional theoretical calculation are combined; obtaining S-N curves ofthe three spring materials through theoretical calculation, and carrying out static analysis and fatigue life simulation of the spiral cylindrical spring on the basis of the S-N curves. The method hasengineering practical significance for the service life of the spring air hole sleeve under the actual working condition, the design reliability can be improved, the production cost is reduced, and the design period is shortened.

Description

【Technical field】 [0001] The invention relates to the technical field of tire molds, in particular to a method for analyzing the structural performance of a spring air hole sleeve. 【Background technique】 [0002] Based on the current dynamic needs of tire manufacturers at home and abroad looking for partners in domestic tire-free molds, it can be predicted that for a long time in the future, hair-free molds will become a new point of competition in the tire mold industry. How to optimize the mold It is the common idea of ​​tire manufacturers and tire mold manufacturers to design the structure without vent holes but to ensure smooth exhaust, and the vulcanized tires have no lanugo that needs to be trimmed. Spring air hole sleeve is the key component of tire mold exhaust without lanugo, its performance index affects the use of the whole tire mold. There are few studies on the structural performance analysis of spring air hole sleeve at home and abroad. This topic mainly makes ...

AI Technical Summary

Problems solved by technology

The spring air hole sleeve is a key part of the exhaust of the tire mold without hair, and its performance index affects the use of the entire tire mold. There are few researches on the structural performance analysis of the spring air hole sleeve at home and abroad. This topic mainly makes research and inventions on this aspect