71 Result(s)
within
**zhi Li
Engineering
Media Management
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Article
Study on job shop scheduling with sequence-dependent setup times using biological immune algorithm
Sequence-dependent setup times are one of the most important factors for the optimization of scheduling the production targets. Usually, they include the changing of tools, fixtures, cutting tools and the clea...
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Article
Acoustic emission method for tool condition monitoring based on wavelet analysis
It is believed that the acoustic emission (AE) signals contain potentially valuable information for tool wear and breakage monitoring and detection. However, AE stress waves produced in the cutting zone are di...
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Article
Experimental studies on cryogenic recycling of printed circuit board
Printed circuit board (PCB) recycling is an important challenge for today’s industry. This paper presents results from a study of cryogenic decomposition as a potential alternative recycling method for obsolet...
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Article
Conception and implementation of a collaborative manufacturing grid
Computer supported collaborative work (CSCW) technology and grid technology are integrated to solve the resource-sharing problems in collaborative design, analysis, and manufacture. The application of grid tec...
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Article
Quadratic curve heat flux distribution model in the grinding zone
In order to estimate temperature distribution and the influence of grinding parameters on grinding temperature in the grinding zone, a theoretical model used for calculating and simulating the grinding process...
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Article
An approach for analyzing and controlling residual stress generation during high-speed circular milling
In the rapid development of the modern high-speed milling industry, particularly in the aerospace field, machined residual stress is an important evaluation indicator of the quality, and whether it can be cont...
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Article
An improved grinding temperature model considering grain geometry and distribution
This work is motivated by the fact that one key parameter of r 0, which is defined as the effective contact radius of grain, in grinding temperature calculation model (TCM) proposed by Marinescu e...
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Article
Effects of tool diameters on the residual stress and distortion induced by milling of thin-walled part
Residual stress has a sustained impact on the deformation of thin-walled parts after processing, raising the strict restrictions required in their using procedure. In general, with regard to thin-walled parts,...
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Application of the Jacobian–torsor theory into error propagation analysis for machining processes
The Jacobian–torsor theory is used to provide mathematical models of tolerance analysis, establishing a mathematical relationship between the open loop and closed loop of tolerances. The model allows additiona...
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Article
Study on high-speed grinding mechanisms for quality and process efficiency
This paper focuses on the mechanism of high-speed grinding to achieve quality and efficiency for ceramics. The criterion of the brittle–ductile removal transition of ceramics is calculated and analyzed. The ef...
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Article
Interactive influence of linked characteristics during machining of thin-walled parts
Today, characteristic-based quality analysis has been popular in academia and industry with its ability to show the error evolution of parts during manufacturing. To date, research on characteristics mainly fo...
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Article
A geometry search approach in case-based tool reuse for mould manufacturing
Similar freeform surfaces are widely adopted in product family or different generations. Manufacturing of these surfaces with efficiency is essential to competitiveness of the company. Conventionally, milling ...
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Article
Study on optimized principles of process parameters for environmentally friendly machining austenitic stainless steel with high efficiency and little energy consumption
Green manufacturing is one of the important development directions for advanced manufacturing technology. In this paper, the orthogonal turning experiment of multiple factors with the minimal quantity lubricat...
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Article
Physics-based analysis of minimum quantity lubrication grinding
Minimum quantity lubrication (MQL), which is to apply a minimum amount of lubricant directly into the contact zone, is a promising alternative to substantially reduce the lubricant cost caused by conventional ...
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Maraging steel phase transformation in high strain rate grinding
In this paper, the modeling of material phase transformation in grinding processes by examining strain rate and contact zone temperature to quantitatively link to the kinetics of diffusion-controlled as well a...
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Article
Residual stress modeling in minimum quantity lubrication grinding
Minimum quantity lubrication (MQL) has been proposed as a promising alternative to conventional flood cooling to substantially reduce the lubrication usage while maintaining high surface quality. Residual stre...
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Simulation-based evaluation of surface micro-cracks and fracture toughness in high-speed grinding of silicon carbide ceramics
Surface/subsurface crack during grinding limits the application of engineering ceramics. High-speed grinding is proposed in ceramics grinding for high material removal rate and surface quality. The dynamic fra...
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Article
Error sensitivity analysis and precision distribution for multi-operation machining processes based on error propagation model
The error control and distribution of multi-operational machining processes is an active and important research topic in manufacturing. Most of the recent studies focus on statistical methods and the robustnes...
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Comparison of ironing finishing and compressing finishing as post-forging for net-shape manufacturing
Net-shape forging is a high-efficiency and low-wastage process. However, it presents numerous disadvantages, such as low precision and surface quality of hot forging, as well as high load and harsh die quality...
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Article
Empirical modeling of dynamic grinding force based on process analysis
Dynamic force modeling can quantitatively describe the force with amplitude-frequency characteristic and facilitate understanding of the influence of grinding parameters on dynamic performance. This research a...
