Abstract: The injection molding process has been well-known non-linear complex dynamics and
the approach extensively applied manual control and rely on experienced engineers. An intelligent
optimization controller has been designed with two series neural networks and the multi-losses
function has been proven can automatically adjust the machine setting overcome the complex
dynamics to upgrade part’s quality and reduce experienced engineers. The proposed method has
shown promising future for expediting the on-line process parameter tuning work to other
complicate non-linear system in the future.
Abstract: Cable harnesses are essential assembly components that provide the electrical
interconnectivity between different modules within a electromechanical product. The design and
planning of cable harness assembly is a very complicated, time-consuming and key problem.
Currently the design and manufacture of cable harness assembly have remained a labor intensive
process. In this paper firstly the published academic in the design and planning of cable harness is
reviewed. Then on the basis of analysis, its development orientations are proposed including CAD
technologies, artificial intelligence, virtual reality and three-dimensional visual assembly.
Abstract: The main objective of this article is the design of the equipment with three-axis simulator
which is driven by the Brushless DC torque motor. In the paper, We also analyze the aspects that
affect the character of the low speed performance of the simulator. Given the character of the torque
interruption, we apply the compound control strategy to compensate the interruption in the position
servo system. It was found that the simulation results proved that the application of the compound
control for counteracting the interruption could improve the capability to counter the interruption
outside the system, and it also enhance the characteristics of the low speed to become well from the
study of the simulation of the system.
Abstract: High speed machining is a promising technology for significantly increasing productivity
and reducing production costs. Development of high-speed spindle technology is strategically critical
to the implementation of high speed machining. Compared to conventional spindles, and motorized
spindles are equipped with built-in motors for better power transmission and balance to achieve
high-speed operation. However, the built-in motor introduces additional mass to the spindle shaft,
besides, since its very high working speed, some high-speed rotational effects, including centrifugal
forces and gyroscopic moments on the spindle shaft can not be neglected in the analysis as is done in
conventional spindle, thus complicating its mechanical-dynamic behaviors. In this paper, the FEM
model of motorized spindle is set up to research on its dynamic characteristics in theory with an eye to
high-speed rotational effects, including centrifugal forces and gyroscopic moments on the motorized
spindle shaft. The motorized spindle’s natural frequencies and corresponding vibration shapes are got
through the modal analysis, and the effect of the axial preload on the natural frequency is
programmed to be seen clearly.
Abstract: It shows the measure principal of spring tube stiffness, analyzes the act of clamp rod in
stiffness measurement of spring tube. Clamp rod is optimized to elevate measurement precision, a
optimized clamp rod is showed. Much test is carried out with the former and the optimization
respectively, the result shows that the stiffness measurement is improved and the design is satisfied
through optimizing the clamp rod.
Abstract: For rigid rotor that widely applied in gyroscopes, high precision dynamic balance is very
important. The paper introduces a dynamic balance method for drum-shape gyroscope rotor: the
rotor is supported by gas bearing; detecting the displacement of three points on the drum-shape
rotor’s end-plane, obtaining its normal direction. Then according to geometrical relation of
geometric axis and polar inertia axis, the dynamic trace of the rotor can be obtained, and the rotor’s
mass imbalance is calculated. Experiment result shows that the method has high balance accuracy,
particularly suit for high-speed gyroscope rotor whose mass imbalance is small.
Abstract: In machining, coolants and lubricants improve machinability, increase productivity by
reducing the tool wear and extend the tool life. However, the use of cutting fluid in metal working
may seriously degrade the quality of environment. Green cutting is becoming increasingly more
popular due to concern regarding the safety of the environment and operator health. The
experimental investigations were carried out with cemented carbide tool in turning ANSI 304
stainless steel and applications of water vapor, CO2, O2 as coolants and lubricants. The application
of water vapor as coolants and lubricants allowed extending tool life. The catalysis chemical
reaction have been generated between water molecules (H2O), oxygen atoms (O) of water vapor
and fresh metal surface of tool-chip contact region, and multi-dimension metal oxidations which has
been formed in tool-chip contact zone weakened mutual action between tool bulk material and chip.
Abstract: This paper deals with the effect on orifice discharge characteristic by the round angle of
electro-hydraulic servo valve spool metering edge. The machining method of spool metering edge
can cause micro round angle on the edge. This paper firstly provides 3D geometry model and
computational grids of spool valve where the round angle’s range is 0-10μm and orifice opening is
0-40μm. Secondly calculates the flow rate of the orifice on the constant differential pressure
circumstances. The numerical analysis is performed by using the commercial code ‘‘Fluent’’, and
the numerical results show the complete flow field inside the valve. The analysis result is to obtain
the influence of round angle on discharge characteristic, quantitatively. An experimental result is
used in this paper to evaluate and validate the numerical analysis of the valve. The aim of this
analysis is to provide a designation reference of the spool valves which are important parts of servo
Abstract: The finite element modeling and experimental validation of three-dimensional precision
cutting of 3J33 maraging are presented. The commercial software MARC applied for the finite
element modeling is studied the effect of tool nose radii considering tool edge radius on the
principal cutting forces and the temperature fields. The model employs an updated Lagrangian
formulation. The friction between the tool and the chip is assumed to follow a modified Coulomb
friction law and the adaptive remeshing technique is using for the formation of chip. The tool edge
radius significantly affects the cutting forces and the maximum temperature of the chip. The
simulation results for tool with nose radius considering tool edge radius are compared with
experimentally measured data and found to be in good agreement.
Abstract: It is by the emissivity of the goal objects and the noise problem of the high temperature
images that people are puzzled during the course of the cutting temperature tested by the application
of thermal imaging device. By using thermocouples, and getting the comparison of thermocouples
and the thermal imaging system temperature, we calibrate object emissivity, handle the image noise
by improved median method, carry on the edge extraction of image, obtain the temperature of
measured objects, and finally confirm the accuracy of the data got by the thermal imaging device
with contact measurement.