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WorksheetsBasic Mechanical Engineering Training Transmission system 4
Total questions: 10
Worksheet time: 10mins
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
