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【计算题】图示为二级斜齿圆柱齿轮减速器。 (1)已知主动轮1的螺旋角及转向,为了使装有齿轮2和齿轮3的中间轴的轴向力较小,试在图中画出齿轮2、3、4的轮齿螺旋角旋向和各齿轮产生的轴向力方向。(2)已知mn2=3mm,z2=57,2=15,mn3=4mm,z3=20,试求3为多少时,使中间轴上两齿轮产生的轴向力互相抵消?
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反馈参考答案：
举一反三
【单选题】对矩阵 A 的以下变换,哪个不是初等变换( ):
A.
A的某两行元素对换：
B.
A的某两列元素对换：
C.
用一个数k乘以A的某一行；
D.
A的某行元素的k倍对应加到另一行上；
【简答题】Most of the sandstorms that had swept China last year came from foreign land, a Chinese official in charge of desertification control said on Monday. And the invasions( 入侵 )could partly explain the fr...
【单选题】Despite the frequent disagreement between some of the band members, there needs to be a(n) ________ decision from all members of the band before anyone can be dismissed.
A.
unanimous
B.
unilateral
C.
underdeveloped
D.
subordinate
【单选题】Despite the frequent disagreement between some of the band members, there needs to be a(n)__________________decision from all members of the band before anyone can be dismissed.
A.
unanimous
B.
animus
C.
whole
D.
universe
【简答题】什么是传动轴的临界转速,增大临界转速的措施有哪些?
【简答题】________ 6 Memory is far more complex than floppy discs, despite the frequent comparisons between the two.
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