Volume 16,Issue 1,1993 Table of Contents

1 Some New Technologies in Gear Machining

1993, 16(1):1-6.

[Abstract](607) [HTML](0) [PDF 296.62 K](212)

Abstract:
The 12 new technologies in gear machining, which have been developed Chongqing University, have been selected in"The major Extending Plan of National Technological Achievements". Apart from a brief introduction to thise technologies,this paper presents the basic principles and the levels of forming grinding .special shaping gear,sycloidal gear machining and internal gear machining technologies.

2 Effect of Tooth Modification on Double Enveloping Worm Gearing

Qin Datong Zhang Guanghui

1993, 16(1):7-13.

[Abstract](552) [HTML](0) [PDF 304.34 K](126)

Abstract:
A method of modifying the double enveloping worm gearing with developable tooth surface has been proposed to reduce the sensibility of the worm gearing to the manufacturing errors. The tooth contact and kinematic precision of the modified worm gearing with manufacturing errors has been investigated by the TCA method. The results show that by the modification, the edge contact resulting from the manufacturing errors is avoided or effectively relieved,and the kinematic error of the worm gearing is obviously reduced.

3 New Technology of Profile Grindng for Tow Teeth Difference Cyclodal Gear

Huang Tianming Yan Yong Liang Xichang Zhan Jie

1993, 16(1):18-24.

[Abstract](569) [HTML](0) [PDF 378.47 K](912)

Abstract:
Two teeth diffenence cyclodal gears are the key parts in cyclodal reducer. The plate abrasive wheel method which is widely used at home has very low precision and productivity. So it' s the common problem to be immediately solved. The profile grinding technology discussed in this paper has been proved by practical production to be an efficient and economical cycodal gear manufacturing method.

4 An Analysis of the Bearing Loads of the Domestic 200MW Turbine Generator Set

Huang Wenzhen

1993, 16(1):25-31.

[Abstract](698) [HTML](0) [PDF 294.65 K](969)

Abstract:
The distribution of tre bearing loads of the domestic 200MW turbine generator set, which depends on their relative positions,have been studied under different supporting conditions. An iterative method has been developed to calculate all of the bearing loads, which takes the structural static indetermination and nonlinearities of the oil film forces into consideration. Variations of the bearing relative positions and their influence on the stability of the rotor-bearing system, have also been discussed.

5 A New Method of Manufacturing Metal Contact Rollers on CNC Milling Machine

Yin Yousheng Liang Xichang Huang Daixing Liu Hengxue

1993, 16(1):32-36.

[Abstract](804) [HTML](0) [PDF 262.52 K](994)

Abstract:
To subgrade the shape-curve roughness of a contact roller,the three-coordinate CNC milling machine has been enlarged as a CNC lathe and CNC grinding machine so that the contact rollers can be lathed and grinded by the same installation and NC program. Furthermore,an NC program of dealing with complex curve contact rollers has been developed. Acceptable metal shaving contact rollers of cycloidal gears and involute gears in shape grinding have been manufactured with this method.

6 Study of Modern Applied Technology for Design and Manufacture of Spiral Bevel and Hypoid Gears

Guo Xiaodong Zheng Changqi Lin Chao

1993, 16(1):37-44.

[Abstract](1013) [HTML](0) [PDF 368.33 K](972)

Abstract:
A new method of computing the cutter specifications and machine settings for the manufacture of spiral bevel and hypoid gears is studied. And a software system which includes the program models of new and old methods is developed. The system can perform the computations such as blank dimensions,cutting and grinding settings,tooth contact analysis and under cut check of SGM,SFM,SGT,SFT,HGM,HFM,HGT,HFT cutting methods. The new method can allow the user to give the position and length of contact pattern,the direction of contact path and the relative anglar acceleration. The system can be easily operated.

7 Study of Tooth Contact and Kinematic Precision on Cone-Generated Double Enveloping Worm Gearing

Qin Datong Zhang Guanghui

1993, 16(1):45-51.

[Abstract](606) [HTML](0) [PDF 308.32 K](1029)

Abstract:
The tooth contact and kinematic precision of cone-generated double-enveloping worm gearing with machining and assembling errors have been investigated. The influence of different errors on driving quality has been discussed. The assembling method to reduce or eliminate the influences of machining errors on tooth contact and kinematic precision has been proposed.

8 The Development of FMT System for Measuring Motion Property of The Drivetrain

Peng Donglin Zhang Guanghui Guo XiaodongGuo Shongtao

1993, 16(1):52-57.

[Abstract](583) [HTML](0) [PDF 286.15 K](712)

Abstract:
This paper introduces the principle and characteristics of a new motion property testing and analysing system and its application.

9 Numerical Analysis of Thermo-Elastic Deformation for Cyindrical Gears

Lu Runfang Ding Yusheng Li Yusheng Tang Qingping

1993, 16(1):58-63.

[Abstract](519) [HTML](0) [PDF 257.69 K](859)

Abstract:
In this paper,both non-coupled numerical method of thermo-elastic deformation and coupled procedure for meshing gear are presented. The illustrative examples of gears applied in machine-tools and rolling mills show that this procedure is ralid and efficient.

10 EDM Generating Technology of Quenched Internal Gear

Liu Yuwen Liang Xichang

1993, 16(1):64-66.

[Abstract](573) [HTML](0) [PDF 180.70 K](960)

Abstract:
Based on the infroduction of the present process of quenched internal gear, a new technolgy of machining quenched internal gear-EDM generating technology is presented with its principle and machining processes. .

11 A Method of Analyzing the Parameter Sensitivity of Large Rotor Systems and Its Application

Huang Wenzhen Huang Buyu Dong Xun

1993, 16(1):72-77.

[Abstract](675) [HTML](0) [PDF 270.88 K](1102)

Abstract:
Based upon the eigenvalue sensitivity theory of non-self-adjoit system and the component mode synthesis method,a new technique is developed to analyze the eigenvalue sensitivity to variation of parameters of large rotor-bearing system. As an application, the influence of the journal bearing parameters on the stability of a large domestic turbine-generator set is analyzed and discussed.

12 Analysis and Discussion on Klinglnberg'''' s Cyclo-Palloid Bevel Gear

Gong Daoxiang Zhang Jianjun Zhen Changqi

1993, 16(1):84-89.

[Abstract](553) [HTML](0) [PDF 292.83 K](221)

Abstract:
Because of their machining characteristics,Klinglnberg' s sprial bevel gears have the advantage over Gleason' s in many ways,so that they are more and more widely used. This paper analyzes the meshing and machining properties of the gears and deduces the equations,normal curveture and contact ratio of tooth surface. It also lays a solid foundation for spreading and importing the Klinglnberg' s machine,and developing klinglnberg' s gears.

13 Mothematical Model for Planing of Precise and Hardened Gear

Chen Zhaotian Huang Tianmin

1993, 16(1):90-95.

[Abstract](586) [HTML](0) [PDF 252.44 K](96)

Abstract:
In this paper, the mathematical model for gear planing of precise and hardened gear is established. The computational charts and results for the tooth edge height,cutter edge contact length and cutter area are given out to improve the present planing technique.

14 Coupled Thermo-Elastic Contact Finite Element Method and It''''s Application in Gearing

Li Runfang Li Yusheng

1993, 16(1):96-101.

[Abstract](569) [HTML](0) [PDF 273.67 K](146)

Abstract:
A new finite element method is presented in this paper to analyze the thermo- elastic contact problem with heat input on meshing tooth faces. The computational model of meshing gear has been established and the frictional heat input on meshing tooth faces is estimated. In addition, 2-D finite element analysis program for this kind of problem is listed. The test and practical examples are given to show the validity and versatility of this method.

15 Force Analysis on Meshing Surface and Stress Research of the Cone Roller Enveloping Worm Gearing Transmission

Long Hui Zhang Guanghui

1993, 16(1):102-106.

[Abstract](727) [HTML](0) [PDF 251.33 K](183)

Abstract:
By using the finite element elastic contact analysis method combined with the I-DEAS engineering analysis software, this paper studies the strength of the cone roller enveloping worm gearing,which is a new type of worm gearing transmission,on SUN-4 working station. It also analyzes loading distribution among meshing gears, the contact force distribution along the contact line ,the bending stress distribution and the contact stress distribution of the cone roller enveloping worm gearing with three-tooth meshing instantaneously. Besides,it provides the theoretic basis in the further researches for the new type of worm gearing transmission.

16 Laser Two-Triangle Measuring Method of 3-D Curved Surface

Tang Chaowei Liang Xichang Zou Changping

1993, 16(1):107-111.

[Abstract](645) [HTML](0) [PDF 225.31 K](142)

Abstract:
Traditionally, the surface contour instrument or three-coordinate machine was used in 3-D curued surfaces measuring system. Now triangle measuring device using laser is installed on the three-coordinate machine and replaces the contact pin. But this method is still limited by the three-coordinate machine itself. On the basis of studying the principle of trinagle the measuring method,this paper has put forward to the two-triangle measuring system and given out the designing method.

17 Laser Heat Treatment to Camshaft in Diesel Enging

Zhang Jin Xu Faren Xu Youyuan Liang Depei

1993, 16(1):112-116.

[Abstract](437) [HTML](0) [PDF 251.67 K](146)

Abstract:
The blacken way and laser parameters of technology for QT60-2 have been optimized. The regression equations on the depth and width of the hardened layer between technology parameters have been set up resoectively. The camshaft in C4102 diesel engine has been been heated with laser. The results show that the average depth of hardened layer is more than 0. 31mm, the average hardness on surface is no lower than Hv0.1940,and the maximum deformation of radial rake is controlled within 0. 02mm.

18 3-D Sensing System of the Humanbody'''' s Curved Surfaces Contour Using Laser Scanning

Tang Chaowei Liang Xichang Shi Jinfa

1993, 16(1):117-123.

[Abstract](600) [HTML](0) [PDF 322.56 K](133)

Abstract:
Based on the method of laser triangulating measurement, 3-D sensing system of reflecting mode with laser scanning is proposed. This measuring system has solved the problems of measuring humanbody' s curved surfaces and can provide data to sculpturing fashion designing and artificial limb making.

19 THE PRINCIPLE AND TECHNIQUE FOR GEAR PLANING BY DISCONTINUOUS GENERATING

Huang Tianmin

1993, 16(1):124-128.

[Abstract](509) [HTML](0) [PDF 226.86 K](133)

Abstract:
The principle of gear planing by discontinuous generating is introduced and two kinds of techniques are presented based on this principle. Examples are given to show that both the accuracy and efficiency of the new techniques are higher and the cost is lower that those of gear hobbing and gear shaping.

20 The Design of the High Speed Data Collecting System in Curved Surfaces Measurement

Tang Chaowei LiangXichang Shi Jinfa

1993, 16(1):129-132.

[Abstract](416) [HTML](0) [PDF 213.32 K](124)

Abstract:
In high speed data collecting system , the way of data transmission is very important. This paper has analyzed in detail the necessity of DMA in data collecting of curve surface measurement and given out the circuit for DMA and described the theory and programming method.

21 the Autolisp Programming Method Processing the Data of the Function of Mechanical and Electrical Products

Shi Jinfa Liang Xiehang

1993, 16(1):133-137.

[Abstract](357) [HTML](0) [PDF 283.90 K](629)

Abstract:
This paper has briefly stated the necessit of applying the computer to processing automatically the data of the function of mechanical and electrical products. It has also presented the method which can solve this practical problem. The method is AutoLISP programming design. Besides, It has summarized the features of LISP and A oLISP language and the principles of the AutoLISP programming method. With examples.

22 Magnetic Fluid Model of Discharge Path in Internal Gears of E. D. M. Grinding

Liu Yuwen Liang Xichang

1993, 16(1):144-148.

[Abstract](613) [HTML](0) [PDF 187.29 K](881)

Abstract:
In this paper, the moving laws at any point of meshing discharge are stuied about internal gears E. D. M. grinding. It is the first time that the meshing theory of gears is combined with electric discharge machining, and the discharge principles of infernal gears of E. D. M. are described.

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