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  • 1
    Electronic Resource
    Electronic Resource
    Experimental Investigation on Effects of Depth of Cut on Micro-Geometric Properties in Quick-Point Grinding (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 359-360 (Nov. 2007), p. 103-107 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Quick-point grinding is used to machine the round surface with super abrasive wheel athigh grinding speed. Because it is point contact between the grinding wheel and the workpiece dueto the point grinding angles in the process, the grinding model is different from the conventionalcylindrical grinding in theory. Especially, the edge contact width between the wheel and theworkpiece is not always equal to the thickness of the wheel, but rests with the depth of cut and thegrinding angles greatly. The depth of cut has the effects on the micro-geometric propertiesespecially the ground surface roughness by means of the variations of the edge contact width, thegrinding force and heat in the process. Based on the theoretical studies on the surface roughness, thequick-point grinding experiments and the measures for the surface roughness were performed atdifferent depth of cut. The effective mechanism of the depth of cut on the ground surface roughnesswas analyzed deeply. Some conclusions to influence surface roughness were also gained
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.359-360.103.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    The Modeling and Finite Elements Simulation for Pressure Field of Abrasive Jet Precision Finishing With Grinding Wheel as Restraint (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 359-360 (Nov. 2007), p. 474-478 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: It is innovative to combine abrasive jet machining and conventional grinding together inthis thesis. And it realizes a new sort of grinding wheel restricted with abrasive jet processing. Thethree-dimensional mathematical model of hydrodynamic pressure of wedge-like grinding zonebetween grinding wheel and workpiece on abrasive jet finishing with wheel as restraint wasestablished, and the finite elements simulation analysis for the hydrodynamic pressure wasimplemented. This paper investigated the liquid hydrodynamic pressure, the regularities ofdistributing of velocity, influencing factors and the affection for processing technique
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.359-360.474.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Study on Effects of Grinding Speed on Finish and Precision Machining in Quick-Point Grinding (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 364-366 (Dec. 2007), p. 696-700 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: According to the analysis in theory, the model of quick-point grinding is different fromconventional cylindrical grinding because it is point contact between the grinding wheel and theworkpiece due to the point-grinding angles in two directions and the lower grain depth of cut in theprocess. Especially, the grinding speed has the great effects on the micro-geometry properties andthe machining precision of the workpiece surface in the process. Based on the theoretical studies onthe surface roughness, the grinding experiments and the measurements of the surface roughness athigh grinding speeds were performed in quick-point grinding process. Furthermore, the influencingmechanism of the grinding speed on the ground surface roughness was analyzed. Some conclusionsof the grinding parameters influencing precision machining and surface integrity were deduced
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.364-366.696.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Experimental Study of the Ultrahigh Speed Grinding Spindle System with a Squeeze Film Damper (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 375-376 (Mar. 2008), p. 658-662 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In order to improve the attenuation ability of grinding wheel spindle and manufacturingquality of workpiece, an ultrahigh speed grinding spindle system with a SFD was designed based onthe theory of squeeze film damping, and a series of experiments were done. The study results showthat the application of SFD technology can effectively restrain vibration which is caused by theimbalance quality when the grinding wheel spindle turning at ultrahigh speed. And the speed of thegrinding spindle is higher and the effect of attenuation of SFD to grinding spindle is better.Research works provides a new technology for the design of the ultrahigh speed grinding spindlesystem
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.375-376.658.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Fractal Characterization and Simulation of Surface Microtopography Machined with Abrasive Jet Precision Finishing with Grinding Wheel as Restraint (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 375-376 (Mar. 2008), p. 490-494 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abrasive jet finishing process is a novel process whose objective is to remove surfacedefect layer and to diminish roughness and ripple after grinding. Experiments were performed withplane grinderM7120 and workpiece material 45# steel which was ground with the surface roughnessvalues of Ra =0.2-0.6 μm . The machined surface morphology was studied using SEM and themicrocosmic geometry parameters were measured with MICROMESVRE2 instrument. In this paper,with the fractal dimension, Ra , Rq and the supporting rate curve, the surfaces of grinding machiningand abrasive jet finishing machining were researched. The result indicated that the machined surfaceschanged from continuous parallel micro-groove and plough to randomly distributed discontinuousmicro-pit could be observed with the increase of machining circles and surface roughness wasobviously improved. Furthermore, the isotropy surface and uniformity veins both parallel andperpendicular machining direction were attained by abrasive jet precision finishing with grindingwheel as restraint. The supporting rate curve of the surface profile can be increased. This is favorablefor the wearable capability of the workpiece
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.375-376.490.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Model and Simulation of Slurry Velocity and Hydrodynamic Pressure in Abrasive Jet Finishing with Grinding Wheel as Restraint (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 375-376 (Mar. 2008), p. 449-453 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The models for three-dimensional velocity and hydrodynamic pressure of abrasive fluidin contact zone between wheel and workpiece on abrasive jet finishing with wheel as restraint werepresented based on Navier-Stokes equation and continuous formulae. The emulational resultsshown that the hydrodynamic pressure was proportion to grinding wheel velocity, and inverseproportion to the minimum gap between wheel and workpiece and the maximum pressure wasgenerated just in the minimum clearance region in which higher fluid pressure gradient occur. It canalso be concluded the pressure distribution was uniform in the direction of width of wheel except atthe edge of wheel because of the side-leakage. The velocity in the x direction was dominant and theside-leakage in the y direction existed. The velocity in the z direction was smaller than the othersbecause of the assumption of laminar flow. The smaller the gap distance is, the larger the velocity inthe x direction. The magnitude of the velocity is also proportional to the surface velocity of thewheel
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.375-376.449.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Control and Analysis of Nonlinear Error for 5-Axis Machining of Hybrid Machine Tool (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 375-376 (Mar. 2008), p. 485-489 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Complex parts are the main object for CNC machining. The 3-TPS hybrid machine tool canachieve 3-axis, 4-axis, 5-axis, vertical and horizontal machining. The analysis of nonlinear error ofthe 3-TPS hybrid machine tool on 5-axis machining and the reduction the error by self-adaptationlinearization are introduced in the paper. The obtained formula for nonlinear error can be used indifferent situations and estimate three-dimensional cutter evelope forming error
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.375-376.485.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Study on Balance Precision of Ultra-High Speed CBN Grinding Wheel System (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 375-376 (Mar. 2008), p. 614-618 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The balance precision of grinding wheel is a key technical parameter in ultra-high speedgrinding process. The actual standard for the balance precision of rigid rotor is not fit for the thinultra-high speed grinding system well. The unbalance factors affected on the ultra-high speedgrinding wheel and its system were analyzed, and its effects on the machining quality in the processwere also discussed. The theory and select principle of the balance precision for ultra-high speedgrinding wheel system were studied. The test of dynamic performance was performed for the thinultra-high speed CBN grinding wheel system whose structure was optimized. The groundwork toestablish the standard of balance precision for thin ultra-high speed grinding system was offered
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.375-376.614.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    The Study on the Dynamic Characteristic of High Speed Machine Tool and Experiment Validate (2004)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 471-472 (Dec. 2004), p. 765-769 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: One of the important factors resulting in the high-speed machinery performance is itsmachine tool dynamic characteristic. It will directly influence the final manufacturing capability of the machinery and it is also the important criterion of evaluating machinery performances. Especially, the dynamic characteristic of spindle assembly has large effect on manufacturing capability of machinery. So it is very important both analyzing dynamic-static characteristic of the spindle assembly and machine tool of high-speed machinery and studying the effect to machinery function. Using Finite Element Analysis software did a Finite Element Analysis of spindle assembly of the high-speed machine tool, and some experiments are done to validate the result the Finite Element Analysis results
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/09/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.471-472.765.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Power Spectral Density Analysis Finished Surface by Abrasive Jet with Grinding Wheel as Restraint (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 24-25 (Sept. 2007), p. 337-342 
    Details
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The abrasive jet finishing process with wheel as restraint is a kind of compoundprecision finishing process that combined grinding with abrasive jet precision machining, in whichinject slurry of abrasive and liquid solvent to grinding zone between grinding wheel and worksurface under no depth of cut feed condition when workpiece grinding were accomplished. Theabrasive particles are driven and energized by the rotating grinding wheel and liquid hydrodynamicpressure and increased slurry speed between grinding wheel and work surface to achieve microremoval machining. The micro removal machining with grinding wheel as restraint, not only toattain higher surface form accuracy but also to can efficiently acquire defect-free finishing surfacewith Ra0.15~1.6$m and finally achieve high efficiency, high precision and low roughness values,furthermore, integrating grinding process and abrasive jet finishing into one features. In the paper,surface topography finished by abrasive jet with grinding wheel as restraint was analyzed andevaluated with power spectral density function. Experiments were performed with plane grinderM7120 and workpiece material 45 steel. The machined surface morphology was studied usingScanning Electron Microscope (SEM) and the microscope and microcosmic geometry parameterswere measured with TALYSURF5 instrument. The experimental results show that microcosmicgeometry parameter values were diminished comparing with ground surface. Furthermore, the meanripple peak distancing was decreased and, ripple and peak density were increased. The resultsindicate that surface qualities by machined with abrasive jet precision finishing were improvedobviously
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.24-25.337.pdf
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