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2016 Vol. 59, No. 22
Published: 2016-11-15
FEATURE
FIGURE
FORUM
NEW VIEWPOINT
RESEARCH
C0NTENTS
C0NTENTS
6
C0NTENTS
2016 Vol. 59 (22): 6-10 [
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FEATURE
16
Development of Laser Additive Manufacturing of High-Performance Metal Parts
ZHANG Anfeng, LI Dichen, LIANG Shaoduan, WANG Tan, YAN Shenping, ZHANG Lianzhong
DOI: 10.16080/j.issn1671-833x.2016.22.016
Laser Additive Manufacturing (LAM) is recognized as an advanced manufacturing technology with integration
of precision forming and high-performance forming. Initially, principles and characteristics of two representative
LAM technologies are introduced respectively, following which the research developments of Xi’an Jiaotong University in
the field of LAM technology are emphatically introduced from the following aspects: (1) The effects of ultrasonic vibration
assisted laser cladding deposition process on the as-deposited microstructures and properties of IN718; (2) Repair of directionally
solidified DZ125L blades with DD4 by induction-assisted laser cladding deposition process; (3) The laser cladding
deposition process of CuW functionally gradient composite materials; (4) Effects of the purity of powder carrier gas on the
microstructures and properties of 40Cr repaired with Fe314 by laser cladding. Ultimately, the challenges that LAM technology
may confront with are explained.
2016 Vol. 59 (22): 16-22 [
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395
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FIGURE
24
Polymer Separation Membranes, Make Our Manufacturing More Cleaner
2016 Vol. 59 (22): 24-25 [
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251
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FORUM
34
High Efficient Machining Technology of Electrical Discharge Machining Ablation for Difficult-to-Cut Metal
LIU Zhidong
DOI: 10.16080/j.issn1671-833x.2016.22.034
The process of electrical discharge machining ablation (EDM-A) machining is proposed, that is bubbled
into oxygen to the processing area in a controlled manner and firstly activates the materials under the effect of EDM induced,
then metal combustion reaction occurrs with the oxygen and materials are removed with the chemical energy of
metal burning, thus the material removal rate is greatly improved and quality of machined surface can be guaranteed by
controlling the oxygen and using the EDM trimming. This technology is suitable for “turning, milling, drilling, shaping,
deep-hole machining” for it still belongs to the machining method of no macro cutting force and it overcomes the problem
of difficulty in machining and the low efficiency of EDM for difficult-to-cut materials machining. The technology has
changed the processing guidelines of difficult-to-cut materials. And almost all combustible conductive materials are able to
be machined by EDM-A. The efficiency of EDM-A milling for Cr12 is ten times higher than the traditional EDM and the
surface quality is equivalent. The efficiency of aerosol dielectric EDM-A for Cr12 blind hole machining is 5.45 times higher
than the traditional EDM, maximum machining depth reaches 132mm and can continue processing.
2016 Vol. 59 (22): 34-39 [
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251
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40
Research on Blade Electrochemical Machining Process Simulation Based on Isogeometric Method
WAN Neng1, DUAN Yongji1, ZHANG Sentang2, DU Ke1
DOI: 10.16080/j.issn1671-833x.2016.22.040
Electrochemical machining process simulation for the blade of aviation engine with complex boundary
plays an important role in the machining prediction. Traditional process simulation relies on finite element method which
needs to solve the remeshing problem and computational accuracy problem. In this paper, we present an approach for
improving the simulation precision based on isogeometric method, which employs NURBS basis function to replace the
original Lagrange basis function in the finite element method and solves the Dirichlet boundary condition’s infliction problem.
In the process of simulation, the corrosion displacement is translated into the displacement of the control point which
avoids the computation time of remeshing and promotes the simulation precision, as demonstrated in the case of this paper.
2016 Vol. 59 (22): 40-47 [
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304
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48
Design and Optimization of Precision ECM Cathode
YU Bing
DOI: 10.16080/j.issn1671-833x.2016.22.048
Based on analysis of structural characteristics of blisk, technical requirements and characteristics of the
material, the technical scheme of electrochemical machining is determined. Three key technologies such as cathodic design
and trajectory calculation, forming cathode design and parameter optimization techniques are analyzed. The key steps such
as design of cathode face, design of flow field, calculation of trajectory and calculation of gap are mainly discussed in detail
and further optimized by repeating experiments to solve problems of uneven flow field and sparking short circuit. Finally,
the feasibility of the process is verified, and the leaf disc of the nested electrolysis is more uniform. It can meet the subsequent
fine electrolytic processing requirements, and achieve good result.
2016 Vol. 59 (22): 48-51 [
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244
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52
Effect of Shape Parameters of Straight Blade Cutter on Performance of Ultrasonic Assisted Cutting System
WU Xin, DONG Zhigang, KANG Renke, ZHU Xianglong, WANG Yidan, LIU Jinting
DOI: 10.16080/j.issn1671-833x.2016.22.052
Based on the theory of ultrasonic vibration design and ultrasonic vibration horn, a straight blade cutter
for ultrasonic assisted cutting of weak stiffness material was designed. The influence of length, thickness parameters of
the blade on the resonant frequency, amplitude magnification and longitudinal amplitude of the tool was analyzed. The effects
of the tool width and transverse direction and the distribution of lateral amplitude along the tool axis direction were
discussed. For the particular ultrasonic vibration system, the tool parameters with the best overall performance were determined.
The cutting edge simulation tool with different shape parameters was developed and tested on the same ultrasonic
vibration system. The conclusion of the simulation analysis was verified. The theoretical analysis was in accordance with
the experimental results. According to the optimum parameters determined by the theoretical analysis, the straight blade
cutter was developed and its vibration performance was tested. The conclusion of the study provided theoretical guidance
for the development of straight blade cutter for ultrasonic assisted machining.
2016 Vol. 59 (22): 52-57 [
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277
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NEW VIEWPOINT
58
Aircraft manufacturing technology; Aircraft support equipment; Engine trailer; Design technology; Analysis of technoloty
DOI: 10.16080/j.issn1671-833x.2016.22.058
Engine trailers are important aircraft support equipments and process equipments, which are used to install
& remove engines and load & transport large aircraft components. They play very important roles in aircraft maintenance
& flight test. Engine trailers of modern jet fighters are complicated equipments, which are made of some mechanisms and
system. This article is based on elaborate study of massive foreign engine traler samples. Development of engine trailers is
reviewed firstly. Then engine trailer technology is summarized and anylasized prominently, the included content as follows:
design requirement & coordinated design, design feature, structure composition, link mechanism key technology, standardization
universalization & serialization, trend of technology development. Advance engine trailer design samples are analysized
subsequently. Finally, summary and forecast are given.
2016 Vol. 59 (22): 58-65 [
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339
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FEATURE
68
Research on Tolerance Allocation Plan Optimization for Aircraft Wing Box Based on 3DCS
Lü Ruiqiang1,2, HOU Zhixia1,2, WANG Mingyang1,2
DOI: 10.16080/j.issn1671-833x.2016.22.068
The rationality of a tolerance allocation plan ensures the efficiency and quality of aircraft products. A typical
aircraft wing box is selected as the study object, and its assembly processing technique is analyzed. Based on the three
dimensional tolerance analyzing software 3DCS, the 3D tolerance analyzing model is built and the assembling process is
simulated. Then, the tolerance allocation plan is designed and optimized. Besides, the structuring display of the 3D tolerance
model is implemented and the mechanism of interactive rapid adjustment for the model is established based on the
development tool CATIA CAA.
2016 Vol. 59 (22): 68-71 [
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284
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Path Planning Method of the AGV Navigated by IGPS in Aircraft Digital Assembly
JIANG Qian1,2, ZHANG Yunzhi1,2, ZHANG Shaoqing1,2, PAN Qing1,2
DOI: 10.16080/j.issn1671-833x.2016.22.072
Taking assembly of aircraft wing box for research object, this article introduces the composing of the AGV
autonomous navigation system and details the simulation software of AGV path planning. The pose of AGV in aircraft assembly
site can be obtained through IGPS in 3D aaircraft assembly virtual environment. This software can plan the path of
AGV and realize the athletics simulation of the AGV path planning. Simultaneously we check and remove interferences of
collision in the aircraft assembly virtual environment, to ensure the safe implementation of AGV autonomous navigation, to
solved the difficult problem of AGV path planning Navigated by IGPS in Aircraft digital assembly.
2016 Vol. 59 (22): 72-77 [
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390
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Research on Application of Flex Track Drilling System in Modern Aircraft Assembly
WEI Chao
DOI: 10.16080/j.issn1671-833x.2016.22.078
Flex track drilling system is a typical lightweight automatic drilling system with the advantages of wide
flexibility, autonomous mobility, easy installation and low cost. It has attracted the attention of many aircraft manufacturers
all over the world, and has been applied widely in the field of modern aircraft assembly. This paper summarizes the current
situation of research and application on flex track drilling system, and analyzes its composition and the corresponding key
technologies. The further research and development trend of flex track drilling system in the future is discussed.
2016 Vol. 59 (22): 78-83 [
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253
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RESEARCH
84
Research on Connection Strength of Flareless Internal Rolling Tube Joint
ZHANG Rongxia1,2,3, WU Wei1,2,3, ZENG Yuansong1,2,3
DOI: 10.16080/j.issn1671-833x.2016.22.084
The flareless internal rolling technology is an important technology in the hydraulic pressure system. The
technology has high sealing performance and connection strength. So it has been used widely in the aeronautical area meeting
for the reliable requirement. For the internal rolling tube joint of Ti alloy, the connection strength is generated because
of the common action of radial contact force and axial pull-off strength between tube and sleeve. The influence regularity of
sleeve structure to connection strength is catched. Deepening the depth of sleeve beard can increase the connection strength.
If the width is over wide, which can inhibit the tube embedding in sleeve and reduce the connection strength. It is instructive
to increase the reliable performance for hydraulic pressure system of plane.
2016 Vol. 59 (22): 84-88 [
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227
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89
Experimental Research Based on Phased Array Ultrasonic Inspection Technology for Weld Joint Inspection of a Type of Aircraft Standing Bar
ZHANG Haibing，Sun Jinli，SUN Hongguang
DOI: 10.16080/j.issn1671-833x.2016.22.089
Weld joint of aircraft landing gear bear the major alternating stress and impact stress, which often lead to
fatigue cracks. According to the feature of landing gear damage and comparison of various detection methods, the ultrasonic
phased array inspection method is chosen, and the reference block is made as the test piece. Ultrasonic phased array
inspection can effectively detect the fatigue crack in weld joint through modeling and testing, and the problems that should
be solved in practical detection by experiment are pointed out.
2016 Vol. 59 (22): 89-91 [
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246
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Numerical Simulation and Analysis on Residual Stress Prediction in a Quenched T-Section Aluminum Component
LI Chen, LOU Ruixiang, WANG Zhigang
DOI: 10.16080/j.issn1671-833x.2016.22.092
The quenching process of 7050 aluminum alloy aircraft forging has been simulated by FE soft ABAQUS.
The cooling curves and distribution of quenching residual stress have investigated. The results show that both the rib and
web parts have same distribution: compressive stress on the surface, tensile stress in the core of the T component. The distributions
of both external and internal, residual stress on the rib are very complex, and bigger than web parts.
2016 Vol. 59 (22): 92-95 [
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203
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Analysis of Manufacturing Enterprise Application System Integration
QIN Xinbing, MENG Zhengwei, WANG Luyuan
DOI: 10.16080/j.issn1671-833x.2016.22.096
Manufacturing enterprises mainly take product research, design, procurement, production, sales and service
business as the main line to carry out information work. At the early stage of construction, the application system serve
for that base on each business system, along with the in-depth application of information technology, application system
integration based on the relation among the business system is imperative. From the perspective of enterprises, the concern
is not a specific integration technology or an abstract concept of integrated, in application system integration of the specific
implementation process, what that the enterprise must prepare for and the key points that need to pay attention are the focus
of this paper.
2016 Vol. 59 (22): 96-99 [
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218
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Analysis and Prevention of Surface Cracking for Machinable Plastic Stretching Tool in Aviation
ZHANG Yongbing1, SU Yahong2, ZHENG Zaiyang1
DOI: 10.16080/j.issn1671-833x.2016.22.100
Crackle often appears on the surface of the traditional stretching tool during its producing. The paper analyses
the causes of cracking on the surface of machinable plastic stretching tool for aircraft skin, a new structure for machinable
plastic stretching tool is presented, while crackle could be prevented.
2016 Vol. 59 (22): 100-102 [
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190
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Research on Effect of the Construction of Outboard Wing Panel End#br# on Plane Bearing Capacity
ZHAO Xiang1, ZHANG Nina3, ZHANG Junlong2
DOI: 10.16080/j.issn1671-833x.2016.22.103
The construction of outboard wing panel end has an important influence on stress-passing characteristic,
deformation and bearing capacity in the design of planes. In this paper, compression tests on three different construction
of the end are conducted to study the stress-passing characteristic, failure mode of them. The load shared by each screw is
computed by three dimensional finite element method, and the optimum construction is obtained by analyzing the effect of
bevel angle on the yield load.
2016 Vol. 59 (22): 103-106 [
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218
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Research on Application of RFID Technology in Aviation
ZHAO Ming1, XU Jiwei2
DOI: 10.16080/j.issn1671-833x.2016.22.107
Radio frequency identification (RFID) technology has been widely used in logistics, financial, retail and
other industries. Aviation corporations have been arguably late adopters of RFID application. By analyzing some typical
application case in aircraft manufacturers, original equipment manufacturers (OEM), airports and so on, the challenge and
necessity of RFID technology application in aviation field is presented, and the direction for the future of the development
of automatic identification technology in aviation industry will be pointed out.
2016 Vol. 59 (22): 107-109 [
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