--_________?--I'm from Mexico.A:Where are you fromB:How do you come hereC:What'
A.Where are you from
B.How do you come here
C.What's your name
D.How far is it
A.Where are you from
B.How do you come here
C.What's your name
D.How far is it
第6题
第7题
某一直齿圆柱齿轮标注为7FL,其模数m=1.5mm,齿数z=60,齿形角α=20°。现测得其误差项目△Fr=45μm,△Fw=26μm,△Fp=43μm,试问该齿轮的第1公差组检验结果是否合格?
第8题
某一直齿圆柱齿轮标注为7FL,其模数m=2mm,齿数z=60,压力角α=20°现测得其误差项目△Fr=45μm,△Fw=30μm,△Fp=43μm,试问该齿轮的第1公差组检验结果是否合格?
第9题
某直齿圆柱齿轮,模数m=2mm,齿数z=50mm,压力角α=20°,齿宽b=40mm,齿轮标注为10GM,现测量结果为:△Fr=0.100mm,△fpt=0.035mm,△Fβ=0.050mm,各公差组是否可判为合格,为什么?
第10题
某直齿圆柱齿轮,模数m=2mm,齿数z=50 mm,齿形角α=20°,齿宽b=40mm,齿轮标注为10GM,现测得结果为:△Fr=0.100mm,△fpt=0.035mm,△Fβ=0.050mm,问各公差组是否可判断为合格,为什么?
第11题
A.单个齿距偏差fpt、齿距累计总偏差Fp和齿廓总偏差Fα
B.螺旋线总偏差Fβ
C.径向跳动Fr
D.单个齿距偏差fpt和齿廓总偏差Fα