【简答题】如下图所示双螺旋传动中,螺旋副a:Pha=2 mm,左旋;螺旋副b:Phb=2.5 mm,左旋。求: (1)当螺杆按上图所示的转向转动0.5周时,活动螺母2相对导轨移动多少距离?其方向如何? (2) 若螺旋副b改为右旋,当螺杆按上图所示的转向转动0.5周时,活动螺母2相对导轨移动多少距离?方向如何?
【简答题】Your
achievement is the ________of years of hard work, both of your own and of your
parents and teachers.
【简答题】Your achievement is the triumph of years of hard work, both of your own and of your parents and teachers.
【简答题】如图所示差动螺旋传动,螺旋副1: P h 1 = 3 mm ,左旋;螺旋副3: Ph 3 =2.5mm, 左旋;求:(1)当螺杆按图示转向转动 0.5 周,活动螺母 2 相对导轨移动多少距离?其方向如何?( 2 )若螺旋副 3 处改为右旋,当螺杆按图示转向转动 0.5 周,活动螺母 2 相对导轨移动多少距离?其方向如何?( 6 分)
【单选题】Your achievement is the " triumph " of years of hard work.
【简答题】Your achievement is the _____of years of hard work.
【简答题】如下图所示双螺旋传动中,螺旋副a:Pha=2mm,左旋;螺旋副b:Phb=2.5mm,左旋。求:(1)当螺杆按上图所示的转向转动0.5周时,活动螺母2相对导轨移动多少距离?其方向如何?(2)若螺旋副b改为右旋,当螺杆按上图所示的转向转动0.5周时,活动螺母2相对导轨移动多少距离?其方向如何?