摘要
导出该类机构压力角α的函数式和基圆半径r的求解公式:tgα=[Lψ′-rsin(ψ_m/2-ψ)]/rcos(ψ_m/2-ψ);r=Lψ′cosα/sin[(α+ψ_m/2-ψ]。式中,α为压力角,r为基圆半径,ψ_m为给定的从动件最大摆角,ψ为ψ_m/2与偏置角之差,L为摆杆长发。给出计算实例。列出有关计算公式,可用以确定结构尺寸和校验压力角值。
Derivates the equations as follow: tgα=[Lφ′-rsin(φ_m/2-φ)]/rcos(φ_m/2—φ); r= Lφ′cosa/sin[(α+φ_m/2)—φ], Where the α is pressure angle, r is base radius, φ is difference between a half φ_m and slanting angle, φ_m is maximum oscillaating angle, L is oscillating rod length. A example is given. Some relative formulas are listed. They may be used for design and calibration of the cylindrical earn mechanism.
关键词
压力角
基圆测量
凸轮
Pressure angles
Basic circle measurement
Cams
Computational methods
