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Five-axis rough machining for impellers

Ruolong QI, Weijun LIU, Hongyou BIAN, Lun LI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1,   Pages 71-76 doi: 10.1007/s11465-009-0010-4

Abstract: An algorithm for determining the minimum distance between two surfaces is applied to estimate the toolThe tool axis vector is confirmed based on flank milling using a simple method that could eliminate globalinterference between the tool and the blades.

Keywords： five-axis     impeller     tool-path     planning     flank milling     ruled surface    

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Tool path strategy and cutting process monitoring in intelligent machining

Ming CHEN, Chengdong WANG, Qinglong AN, Weiwei MING

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 2,   Pages 232-242 doi: 10.1007/s11465-018-0469-y

Abstract: Results show that intelligent tool path optimization and cutting process online monitoring are efficient

Keywords： intelligent machining     tool path strategy     process optimization     online monitoring    

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Variable eccentric distance-based tool path generation for orthogonal turn-milling

Fangyu PENG,Wei WANG,Rong YAN,Xianyin DUAN,Bin LI

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 4,   Pages 352-366 doi: 10.1007/s11465-015-0361-y

Abstract:

This study proposes an algorithm for maximizing strip width in orthogonal turn-milling based on variable eccentric distance. The machining error model is first established based on the local cutting profile at the contact line. The influencing factors of the strip width are then investigated to analyze their features and determine an optimizing strategy. The optimized model for maximum machining strip width is formulated by adopting a variable eccentric distance. Hausdorff distance and Fréchet distance are introduced in this study to implement the constraint function of the machining error in the optimized model. The computing procedure is subsequently provided. Simulations and experiments have been conducted to verify the effectiveness of the proposed algorithm.

Keywords： orthogonal turn-milling     variable eccentric distance     local cutting profile     machining strip-width maximization    

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Energy saving design of the machining unit of hobbing machine tool with integrated optimization

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0694-2

Abstract: The machining unit of hobbing machine tool accounts for a large portion of the energy consumption duringAn integrated optimization model for reducing tool displacement and energy consumption is developed onResults show that the energy consumption and tool displacement of the machining unit are reduced, indicating

Keywords： energy saving design     energy consumption     machining unit     integrated optimization     machine tool    

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Effect of magneto rheological damper on tool vibration during hard turning

P. Sam PAUL, A. S. VARADARAJAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4,   Pages 410-416 doi: 10.1007/s11465-012-0341-4

Abstract: The present investigation aims at developing a magneto rheological (MR) fluid damper for suppressing toolwere conducted to arrive at a set of electrical, compositional and shape parameters that can suppress toolIt was observed that the use of MR fluid damper reduces tool vibration and improves the cutting performance

Keywords： tool vibration     magneto rheological damper     hard turning     surface finish     tool wear    

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A novel six-legged walking machine tool for

Jimu LIU, Yuan TIAN, Feng GAO

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3,   Pages 351-364 doi: 10.1007/s11465-020-0594-2

Abstract: This study proposes a novel six-legged walking machine tool consisting of a legged mobile robot and aportable parallel kinematic machine tool.of the large workspace of the legged mobile platform and the high precision of the parallel machine toolFinally, an application scenario is shown in which the walking machine tool steps successfully over ahierarchical motion planning scheme and demonstrate the extensive potential of the walking machine tool

Keywords： legged robot     parallel mechanism     mobile machine tool     in-situ machining    

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Green catalytic engineering: A powerful tool for sustainable development in chemical industry

Kequan Chen, Dangguo Cheng, Chong Peng, Dan Wang, Jintao Zhang

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 835-837 doi: 10.1007/s11705-018-1756-1

Abstract:
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A PLATFORM TO AID SELECT THE OPTIMAL TOOL TO DESIGN GUIDE RNAS

Frontiers of Agricultural Science and Engineering   Pages 296-305 doi: 10.15302/J-FASE-2022479

Abstract:

● Summaries on sgRNAs design.

Keywords： CRISPR/Cas     Aid-TG     gene editing     sgRNA design     web server    

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Rise of aluminum-chalcogen batteries: A promising path to sustainable energy storage

Frontiers in Energy 2023, Volume 17, Issue 5,   Pages 567-568 doi: 10.1007/s11708-023-0887-3

Abstract: Rise of aluminum-chalcogen batteries: A promising path to sustainable energy storage

Keywords： promising path energy    

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Kinematic error separation on five-axis NC machine tool based on telescoping double ball bar

Min WANG, Jianzhong HU, Tao ZAN

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 431-437 doi: 10.1007/s11465-010-0110-1

Abstract: transformation matrix (HTM) method are applied in establishing the kinematic error model of five-axis machining toolmodel, a new method for the kinematic error separation in five-axis numerical control (NC) machining toolto measure the relative distance between the spindle and the worktable in the motion of NC machining tooltelescoping double ball bar is substituted into the model to obtain kinematic error of NC machining toolis high precision and can be applied to effectively and conveniently measure the five-axis machining tool

Keywords： error modeling     error separation     telescoping double ball bar     five-axis numerical control (NC) machining tool    

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Iterative HOEO fusion strategy: a promising tool for enhancing bearing fault feature

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0725-z

Abstract: As parameter independent yet simple techniques, the energy operator (EO) and its variants have received considerable attention in the field of bearing fault feature detection. However, the performances of these improved EO techniques are subjected to the limited number of EOs, and they cannot reflect the non-linearity of the machinery dynamic systems and affect the noise reduction. As a result, the fault-related transients strengthened by these improved EO techniques are still subject to contamination of strong noises. To address these issues, this paper presents a novel EO fusion strategy for enhancing the bearing fault feature nonlinearly and effectively. Specifically, the proposed strategy is conducted through the following three steps. First, a multi-dimensional information matrix (MDIM) is constructed by performing the higher order energy operator (HOEO) on the analysis signal iteratively. MDIM is regarded as the fusion source of the proposed strategy with the properties of improving the signal-to-interference ratio and suppressing the noise in the low-frequency region. Second, an enhanced manifold learning algorithm is performed on the normalized MDIM to extract the intrinsic manifolds correlated with the fault-related impulses. Third, the intrinsic manifolds are weighted to recover the fault-related transients. Simulation studies and experimental verifications confirm that the proposed strategy is more effective for enhancing the bearing fault feature than the existing methods, including HOEOs, the weighting HOEO fusion, the fast Kurtogram, and the empirical mode decomposition.

Keywords： higher order energy operator     fault diagnosis     manifold learning     rolling element bearing     information fusion    

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The Path Dependence of Chinese Corporate Governance——Theoretical and Positive Analysis

Bing Hongyan

Strategic Study of CAE 2004, Volume 6, Issue 2,   Pages 82-87

Abstract:

Building on reviewing the theories of path dependence, this paper analyses the two sources of thepath dependence of corporate governance, i. e.Structure-driven path dependence and rule-driven path dependence,and reveals the effect of the path dependencepaper analyses the developing process of Chinese corporate governance, and points out three kinds of path

Keywords： Chinese corporate governance     path dependence     structure-driven path dependence     rule-driven path dependence    

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New method for computer numerical control machine tool calibration: Relay method

LIU Huanlao, SHI Hanming, LI Bin, ZHOU Huichen

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3,   Pages 301-304 doi: 10.1007/s11465-007-0053-3

Abstract: Relay measurement method, which uses the kilogram-meter (KGM) measurement system to identify volumetric errors on the planes of computer numerical control (CNC) machine tools, is verified through experimental tests. During the process, all position errors on the entire plane table are measured by the equipment, which is limited to a small field. All errors are obtained first by measuring the error of the basic position near the original point. On the basis of that positional error, the positional errors far away from the original point are measured. Using this analogy, the error information on the positional points on the entire plane can be obtained. The process outlined above is called the relay method. Test results indicate that the accuracy and repeatability are high, and the method can be used to calibrate geometric errors on the plane of CNC machine tools after backlash errors have been well compensated.

Keywords： positional     volumetric     information     process     repeatability    

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Design and Fabrication of Multiphase Composite Ceramic Tool Materials

Xu Chonghai,Ai Xing

Strategic Study of CAE 2001, Volume 3, Issue 3,   Pages 71-74

Abstract: between the mechanical properties and the material compositions of the multiphase composite ceramic toolThen, an advanced Al2〇3—SiC-(W,Ti)C multiphase composite ceramic cutting toolproposed in the present study is reasonable and feasible for the design of multiphase composite ceramic tool

Keywords： ceramic tool material     multiphase composite     material design     model     mechanical property    

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Extended model predictive control scheme for smooth path following of autonomous vehicles

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 4-4 doi: 10.1007/s11465-021-0660-4

Abstract: This paper presents an extended model predictive control (MPC) scheme for implementing optimal path followingmethod solved by differential evolution optimization algorithm is proposed to realize optimal smooth pathfollowing based on driving path features.Results indicate that the proposed method can obtain the smooth transition to follow the optimal drivable pathand satisfy the lateral dynamic stability and environmental constraints, which can improve the path

Keywords： autonomous vehicles     vehicle dynamic modeling     model predictive control     path following     optimization    

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Title Author Date Type Operation

Five-axis rough machining for impellers

Ruolong QI, Weijun LIU, Hongyou BIAN, Lun LI

Journal Article

Tool path strategy and cutting process monitoring in intelligent machining

Ming CHEN, Chengdong WANG, Qinglong AN, Weiwei MING

Journal Article

Variable eccentric distance-based tool path generation for orthogonal turn-milling

Fangyu PENG,Wei WANG,Rong YAN,Xianyin DUAN,Bin LI

Journal Article

Energy saving design of the machining unit of hobbing machine tool with integrated optimization

Journal Article

Effect of magneto rheological damper on tool vibration during hard turning

P. Sam PAUL, A. S. VARADARAJAN

Journal Article

A novel six-legged walking machine tool for

Jimu LIU, Yuan TIAN, Feng GAO

Journal Article

Green catalytic engineering: A powerful tool for sustainable development in chemical industry

Kequan Chen, Dangguo Cheng, Chong Peng, Dan Wang, Jintao Zhang

Journal Article

A PLATFORM TO AID SELECT THE OPTIMAL TOOL TO DESIGN GUIDE RNAS

Journal Article

Rise of aluminum-chalcogen batteries: A promising path to sustainable energy storage

Journal Article

Kinematic error separation on five-axis NC machine tool based on telescoping double ball bar

Min WANG, Jianzhong HU, Tao ZAN

Journal Article

Iterative HOEO fusion strategy: a promising tool for enhancing bearing fault feature

Journal Article

The Path Dependence of Chinese Corporate Governance——Theoretical and Positive Analysis

Bing Hongyan

Journal Article

New method for computer numerical control machine tool calibration: Relay method

LIU Huanlao, SHI Hanming, LI Bin, ZHOU Huichen

Journal Article

Design and Fabrication of Multiphase Composite Ceramic Tool Materials

Xu Chonghai,Ai Xing

Journal Article

Extended model predictive control scheme for smooth path following of autonomous vehicles

Journal Article