填空题(国外英文资料).docVIP

填空题(国外英文资料) Fills up the topic Two, filling in the blanks: this big question 9 small, altogether 18 empty, each empty 0.5 cent, total 9 points. Put the answer in the line. Closed hard tooth gear transmission is often designed by strength and then checked Strength. 2. After the preloaded by the axial load of screw thread connection, in order to improve the connection of fatigue strength, stiffness should be reduced as far as possible, and the height of the increase. 3. Increase the worm quotas, transmission efficiency, but worm Numbers too much, will be to difficult. ? 4. The strength calculation method of spur bevel gear transmission is based on the equivalent cylindrical gear as the calculating. The condition for the proper engagement of the Archimedes worm and worm wheel is. ????? _____ is a general term for machines and institutions. The Angle of the bag is the Angle between the belt and the wheel. For the flat belt drive, the general requirement is that the Angle alpha is greater than or equal to... For V belt drive, the general requirement is that the Angle alpha is greater than or equal to ________. The CAM base circle radius is the shortest distance from to. 9. The CAM mechanism follower motion law of the two common, ________________ movement has a rigid impact, this is because the ____________ hold a mutation, flexible impact ________________ movement, this is because the ____________ hold a mutation. Two, fill in the blanks: this big problem 9 small problem, altogether 22 empty, each empty 0.5 cent, total 11 points. Put the answer in the line. Threads are generally classified as ________ and ________, according to their USES. 2. For involute gear, the tooth profile Angle usually say is refers to the _____ eat shape, the Angle of tooth profile has been standardized, expressed in alpha, and alpha = ______. There are three basic types of hinged four bars. The average flat key b * h * * * = 20mm by 12mm by 56mm. The function and purpose of the parts weekly to