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本文论述摆动辗压力能参数的计算方法:导出接触面积率的两个精确式λ=1/π[4/3Q~2(1/Q-1)~(3/2)+1/2cos~(-1)(1-2θ)-θ(1-2θ)(1/Q)~(1/2)-1]λ=1/(2π)[α+(1+2Q)(sinα)/3]式中α=cos~(-1)(1-2Q);Q=(s/(2Rtgr))~(1/2)λ=0.4√Q+0.14Q导出了不同相对厚度工件摆辗力计算公式,对很薄的板进行辗压时:P_总=n_Vn_HπR~2λ[1+E/(2K)(h/R)~3(1.2Q+1.12)++(mR)/h(0.24Q+0.141)]2K有塑性铰链存在时P_总=/n_Vn_HπR~2λ〔1+0.414e~(-3.5Q)〕+(mR)/h(0.24Q+0.141)〕2K对厚板(h/R≥1)辗压时P_总=/n_Vn_HπR~2λ〔1+0.414e~(-3.5Q)〕+m(0.24Q+0.141)〕2K对摆辗与锻造力进行比较,试图从理沦上说明摆辗省力的原因。
In this paper, the calculation method of the swinging energy parameter is discussed. Two exact formulas of the contact area ratio λ = 1 / π [4 / 3Q ~ 2 (1 / Q- 1) ~ (3/2) + 1 / 2cos ~ -1 1 - 2 θ - θ 1 - 2 θ 1 / Q - 1/2 λ = 1/2 πα + 1 q 2 sin α / In the formula, α = cos -1 (1-2) Q = (s / (2Rtgr)) ~ (1/2) λ = 0.4√Q + 0.14Q. , When rolling a very thin plate: P_total = n_Vn_HπR ~ 2λ [1 + E / (2K) (h / R) -3 (1.2Q + 1.12) ++ (mR) / h (0.24Q + 0.141)] 2K plastic hinges in the presence of P_ = / n_Vn_HπR ~ 2λ 〔1 + 0.414e ~ (-3.5Q)〕 + (mR) / h (0.24Q + 0.141〕〕 2K thick plate (h / R ≥1) Rolling P_ total = / n_Vn_HπR ~ 2λ 〔1 + 0.414e ~ (-3.5Q)〕 + m (0.24Q + 0.141)〕 2K The swing and forging force are compared, trying to reasonably degenerated Explain the reasons for saving labor.