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1、机械设计英文题 1.Whats the procedure of design of sliding bearings? (1)Select the construction and the materials of bearings; (2)Preliminarily select the basic dimensions of bearings; (3)Check the design conditions; (4)Select the lubricant and the lubricating installation. 2.Whats the procedure of design o
2、f shaft? (1)T-dmin; (2)structure design; (3)force analysis; (4)strength check. 3.What is the rated life of a rolling bearings？ The life that 90% of the bearings would achieve succefully under a rated load. 4.What are fundamental requirements for machinery design? (1)Functional requirements; (2)Econo
3、mic requirements; (3)Safety and environment requirements; (4)Reliability requirements; (5)Other specific requirements. 5.What are failure models of mechanical components? (1)Fracture failure; (2)Failure resulted from unexpected deformations; (3)Failure on surface damage; (4)Failure resulted from abn
4、ormal operational conditions. 6.What is the basic rated dynamic load of rolling bearings? The load to which the bearings can be subjected while achieving a rated life (l10) of 1 million revolutions. 7.Whats the design procedure of key joints? (1)Get the section size b*h; (2)Select proper key length
5、L; (3)Check the strength calculation. 8.What is the creep of belt drives? Because the belt is elastic materials there is the elastic stretch when the belt is loaded.Then relative slip takes place between the belt and the pulley.Such relative slip is known as belt creep. 9.What are gear failures? (1)
6、 Breakage; (2) Pitting; (3) Gluing; (4) Abrasive wear; (5) Ridging. 10.What are the design criteria of gear? Contact strength and bending strength. 11.What are the characteristics of worm gearing? (1)Advantages:A large speed ratio; Silent and smooth operation; Small drive sizeBetter load distributio
7、n; Self-locking action. (2)Disadvantages:Low efficiency; Expensive antifriction materials;Considerable sliding speed; Considerable heat generated. 12.What are the primary considerations in the mounting of a bearing? (1)The shaft seat diameter and tolerances; (2)The housing internal bore and toleranc
8、es; (3)The shaft shoulder diameter againt which the inner race of the bearing will be located; (4)The housing shoulder diameter provided for locating the outer race; (5)Radius of the fillets at the base of the shaft and housing shoulders; (6)The means of retaining the bearing in position. 13.What ar
9、e the functions of lubrication in a bearing unit? (1)to provide a low-frication film; (2)to protect the bearing components from corrosion; (3)to help diipate heat from the bearing unit; (4)to carry heat away from the bearing unit; (5)to help dispel contaminants and moisture from the bearing. 14.What
10、 is design requirements for mechanical components? (1)Design for Safety; (2)Design for manufacturability; (3)Design for costs; (4)Design for reliability. 南京工业高校 机械设计英文题 机械设计基础题 机械设计基础推断题 机械设计基础题附答案 清华机械设计基础真题 机械设计 机械设计 机械设计 机械设计 机械设计与制造英文翻译 本文来源：网络收集与整理，如有侵权，请联系作者删除，谢谢！第6页 共6页第 6 页 共 6 页第 6 页 共 6 页第 6 页 共 6 页第 6 页 共 6 页第 6 页 共 6 页第 6 页 共 6 页第 6 页 共 6 页第 6 页 共 6 页第 6 页 共 6 页第 6 页 共 6 页
