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弹簧材料种类有很多,性能各异。根据美国加丁纳和卡尔逊的理论,弹簧在冷卷成形后的弹性恢复量,决定于材料的强度极限和杨格弹性模量系数,同时也与钢丝直径和弹簧外径有关。按照试卷一次弹簧松开后的外径、芯轴直径和钢丝直径就能计算出材料特性系数K。 K=1.02d′/(D′_a+d′)-d′/(D′_s-d′)……(1) 式中:K—材料特性系数;d′—钢丝直径;D′_s—实际弹簧从芯轴上松开后的外径;D′_a—试卷用芯轴直径。
There are many types of spring materials, different performance. According to the theories of Gardiner and Carlson in the United States, the amount of elastic recovery of a spring after cold-forming is determined by the material’s strength limit and Young’s modulus of elasticity, as well as the diameter of the wire and the outer diameter of the spring. According to the test paper once the spring after the release of the outer diameter, diameter of the mandrel and wire diameter can calculate the material properties of the coefficient K. K = 1.02d ’/ (D’a + d’) - d ’/ (D’s-d’) where K is the material characteristic coefficient; Actual spring from the mandrel after the release of the outer diameter; D’_a- Test mandrel diameter.