Basic Mechanical Engineering Training Transmission system 4

Which bearing can only support radial load?

以下哪项轴承只能承受径向载荷？

• A)Deep groove ball bearing

  A)深沟球轴承

• B)Self aligning ball bearing

  B)调心球轴承

• C)Angular contact bearing

  C)角接触轴承

• D) Cylindrical roller bearing

  D)圆柱滚子轴承

•Which is the best bearing selection to support the input of a servo motor ball screw system?

在伺服马达丝杠传动中，输入端选择什么样的轴承最佳？

• A)Deep groove ball bearing

  A)深沟球轴承

• B)Self aligning ball bearing

  B)调心球轴承

• C)Angular contact bearing

  C)角接触轴承

• D) Cylindrical roller bearing

  D)圆柱滚子轴承

•Which is the best bearing selection to support the end of a servo motor ball screw system?

在伺服马达丝杠传动中，支撑端选择什么样的轴承最佳？

• A)Deep groove ball bearing

  A)深沟球轴承

• B)Self aligning ball bearing

  B)调心球轴承

• C)Angular contact bearing

  C)角接触轴承

• D) Cylindrical roller bearing

  D)圆柱滚子轴承

In a servo motor ball screw system, if the rotation speed is 3000r/min, the diameter of screw is 20mm, the lead is 10mm, what is the linear slider’s speed?

在伺服马达丝杠传动中，已知马达转速3000r/分，丝杠直径20mm,丝杠导程10mm,则丝杠直线运动的速度是？

• A)150mm/s

• B)300mm/s

• C)500mm/s

• D)600mm/s

A elevator ball screw system, the load is 10kg, screw lead is 10mm, η=0.8, what is the drive torque of servo motor?

已知垂直提升丝杠模组，提升重量10kg,丝杠导程10mm, η=0.8，求驱动扭矩大小

• A)0.2N·M

• B)0.3N·M

• C)0.4N·M

• D)0.5N·M

•A spur gear, m=2, z=20, the radius is ?

直齿轮中，模数m=2,齿数z=30,齿轮的半径是多少？

• A)20mm

• B)30mm

• C)60mm

• D)15mm

Which is the advantage of gear transmission?

齿轮传动的特点有？

• A)The transmission can transmit high power and reach a high ratio

  A)传动的功率和速度范围大

• B)Has a long life span but low efficiency

  B)使用寿命长，但传动效率低

• C)Manufacturing and installation accuracy requirements are not high

  C)制造和安装精度要求不高

• D）It can reach stepless speed change

  D)能实现无极变速

In a step belt transmission system, if the motor speed is 1200r/min, the wheel’s diameter is 40mm，what is the speed of the slider.

在同步带传动中，已知电机的速度为1200r/分，同步轮直径为40mm,则滑块的速度为？

• A)200mm/s

• B)125mm/s

• C)300mm/s

• D)250mm/s

•If you want to transmit strong force between two long distance shaft, you’d better choose ?

欲在两轴相距较远，工作条件恶劣的环境下传递较大功率，宜选择

• A)Belt transmission

  A)带传动

• B)Chain transmission

  B)链传动

• C)Gear transmission

  C)齿轮传动

• D)Worm transmission

  D)蜗杆传动

Motor speed is 1200r/min, motor torque is 1N·M, D1=20mm, D2=40mm, L=100mm,what is the speed of wheel 2? what in the max load it can bear?

电机的速度是1200r/分,电机的扭矩是1N·M, D1=20mm, D2=40mm,L=100mm,计算轴2的转速及最大可提升多大的重物？

• A)10r/s,2kg

• B)10r/s,1kg

• C)20r/s,1kg

• D)20r/s,2kg