【正文】 D and manufacturing technology manufacturers have Yubei Koyo Steering Gear Co., Ltd. and other enterprises. [1] With the rapid development of automobile industry, as well as for fort, safety and continuous improvement in performance, steering systems are also changing with the advance of technology. For the time being, electric power steering system is turning the forefront of the industry research projects, in accordance with its distribution of the form of string can be divided into power, gear Power, power rack, power bar, the form of electrohydraulic power. Ago in some scifi movies of the unmanned aircraft can occur, such as unmanned aerial vehicle is now a reality, steering systems are moving in the direction of the development of more advanced, such as research and development from Japan JTEKT advanced by the steerbywire systems. In this paper, choicebased recycling the ball GX1608A gear steering rack as a research topic, its main contents are: knowledge of automotive steering gear, balltype steering gear cycle of the main parameters and design choices. Design also includes the shift rocker shaft, involute spline, fan gear shaft and screw shaft design and verification. According to its own independent study pleted by the steering shaft and screw shaft rocker design and verification, in other parts of the network, as well as through the school library to co。 transmission efficiency at the same time will lower. The use of conventional vibration and temperature +40 176。 further 120 weeks of petrol industrial solvents the membrane will be washed with impurities. To be volatile after the membrane cleaning fluid, together with the impurities from weighing, with the magnet cellophane packets are sorted in the iron impurities, said the weight of a scrapiron. The iron filings and then 40 times on the microscope with a disability in most dogs measured particle size (length X width). ⑧ shift towards vertical axis aperture arm flying finish, different degree of heart。 magnetic flaw detection。 174。39。 ④ browser to Min Xuan cochlear aperture wheel size precision, smoothness, tooth surface roughness, intermediate thick teeth, tooth, tooth degree of asymmetry。hole angle from the Chinese side, the block size, finish and degree of asymmetry。 ② steering vertical axis arm journal dimensional accuracy and smoothness, the worm wheel roller bearing of the journal center hole distance, wheel bearing and the journal39。lack of testing and testing of the poor law awareness. So have some of the parts is a qualified products l materials, and assembly of products from the pilot test proved to be defective, or: The test can verify the quality of products and design for the steering gear (1) the accuracy of parts of the foot only, finish second, twophase the location of the elite Measuring the content of L ① steering shaft loaded journal bearings Department feet 39。in the past only means to recognize the importance of detection, and the lack of39。附錄Hyundai Motor on the steering control of the request is lightweight, safe, reliable, and should have sufficient life. In order to meet these requirements, the design of the steering gear should have a reasonable transmission ratio characteristics, the correct gap eating together, a higher transmission efficiency, sufficient rigidity and strength. If the steering gear in the design is reasonable, then the product is good and bad parts of the key issues of manufacturing and assembly. How to control the quality of the product? The key problem is that a reasonable detection methods, the key to strictly control the passing rate of time, such products will be able to guarantee the quality of parts and ponents. First of all, the quality of shifting ASSY, should control the assembly and to ensure that turning the steering shaft torque and rotational axis and the transmission gap between ponents. Followed by testing the performance of steering gear, steering gear must also be adopted by all types of testbed to verify the established angle transmission ratio, transmission efficiency, rotational torque, rigid. In addition to examination other than the abovementioned steering performance, but also in the pilot stage of its life nuclear reliability and life expectancy that is static torsion test: a thin red hammer, hit test, fatigue life test. To determine whether the quality of the product in hand national standards. Noise from the steering angle repair cream, which is also a test method to detect and can learn from the J class machinery manufacturing industry in China39。，在與計算機配合進行精確的數(shù)據(jù)采集和控制上還有一些不足。但是，設計研究過程中仍然存在不足之處，有的問題還待于進一步深入，具體如下：，對一些參數(shù)和元件的選用可能不是非常合理，有一定的浪費。，同時也懂得了互助合作的重要性。，為以后正確解決工作和學習中的問題打下了堅實的基礎。，并了解學習了新的知識，開闊了視野，拓寬了自己的知識面。無論碰到什么樣的困難，我都沒有退縮，憑借著一股求知的熱情，再加上指導老師的幫助，然后再回到書本攻克一個又一個的難題，最終圓滿地完成了本次設計。[]為許用接觸應力，當接觸表面硬度為5864HRC時，[]等于25 參考文獻[1] 朱東華 樊智敏主編. 機械設計基礎. 第一版. 機械工業(yè)出版社 2003 86142[2] 陳家瑞主編. 汽車構造. 第一版. 機械工業(yè)出版社 2004 263276[3] 王望予主編. 汽車設計. 第三版. 機械工業(yè)出版社 2000 342405[4] 蔡春源主編. 新編機械設計手冊. 第一版. 遼寧科學技術出版社 1992 206241[5] 毛志堅 邵常貴等編. 現(xiàn)代汽車大全第一版. 湖北科學技術出版社 1986 245252[6] 張洪欣等編. 汽車技術詞典. 人民交通出版社 1985 138257[7]《齒輪手冊》編委會. 齒輪手冊第一版. 機械工業(yè)出版社 1990 186239[8]《現(xiàn)在機械傳動手冊》編輯委員會編. 現(xiàn)在機械傳動手冊第一版. 機械工業(yè)出版社1995 119164[9] 陳忠良，邊欣主編. 機械制圖與計算機繪圖（第一版）. 中國農(nóng)業(yè)出版社 . 2004 15138[10] 哈爾濱工業(yè)大學理論力學研究室編. 理論力學（第六版）. 高等教育出版社. 2002 88208[11] 劉鴻文主編. 材料力學（第四版）. 高等教育出版社. 2004 23155[12] 廖念釗，莫雨松，李碩根，楊興駿編. 中國計量出版社. 互換性與技術測量（第四版）. 2000 54166[13] 楊可楨，程光蘊主編. 機械設計基礎（第四版）. 高等教育出版社. 1999 53104[14] Haffman EG. 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