In this paper a method that a layer of Cu was cladded on the surface of diamond particle by an appropriate chemically Cu-cladded process was put forward. The method can adjust the thickness of cladding by one step or ...In this paper a method that a layer of Cu was cladded on the surface of diamond particle by an appropriate chemically Cu-cladded process was put forward. The method can adjust the thickness of cladding by one step or multiple steps. The composition and structure of Cu-cladded diamond were analyzed with help of XRD, SEM and EPMA. The results shoe that copper was homogeneously dispersed on the surface of diamond particle by this method, the deposited copper is loosely dispersed by one step cladding process, and the copper is tightly organized by multiple steps cladding process. Copper presents crystalline, and a small amount of oxygen and iron exits ibn copper layers. Wearing test shows that the wear-resisting property of Cu-cladded diamond wheel is superior to that of general diamond wheel, and that of diamond of which Cu-cladded thickness is deposited more thickly by multi-steps cladding process is better.展开更多
Wheel dressing is an important part of grinding, it influences not only the grinding quality ofthe workpiece,but also the cost of grinding.At present the single point mined diamond is widelyused as dresser in industry...Wheel dressing is an important part of grinding, it influences not only the grinding quality ofthe workpiece,but also the cost of grinding.At present the single point mined diamond is widelyused as dresser in industry.Because the mined diamond is rare in nature and dear,it has a practicalsignificance to find a substituting material for the mined diamond.Due to the isotropy of PCD(polyerystalline diamond),new sharp cutting edges will expose continuously during dressing opera-tions,maintaining high dressing efficiency.Tests show that dressing corundum wheel,especiallydressing those for internal grinding,PCD dresser is suitable to common hardnesses,and grains ofwheels and smaller depth of dressing.The authors consider that PCD dressing can be used to sub-stitute completely the mined diamond dresser and the cost of dressing may be reduced.展开更多
A new idea for designing wheel patterns is presented so as to solve theproblems about machining accuracy of workpiece and wear of honing wheel in ultra-precision planehoning. The influence factors on motion principle ...A new idea for designing wheel patterns is presented so as to solve theproblems about machining accuracy of workpiece and wear of honing wheel in ultra-precision planehoning. The influence factors on motion principle and pattern structures are analyzed andoptimization machining parameters are obtained. By calculating effective cutting length on thesurface of workpiece cut by wheel's abrasive and the orbit of one point on the surface of workpiececontacting with wheel, the wear coefficient of different kinds of wheels and accuracy coefficient ofworkpiece machined by corresponding wheels are obtained. Furthermore, the simulation results showthat the optimal pattern structure of wheel turns out to have lower wheel wear and higher machiningaccuracy.展开更多
文摘In this paper a method that a layer of Cu was cladded on the surface of diamond particle by an appropriate chemically Cu-cladded process was put forward. The method can adjust the thickness of cladding by one step or multiple steps. The composition and structure of Cu-cladded diamond were analyzed with help of XRD, SEM and EPMA. The results shoe that copper was homogeneously dispersed on the surface of diamond particle by this method, the deposited copper is loosely dispersed by one step cladding process, and the copper is tightly organized by multiple steps cladding process. Copper presents crystalline, and a small amount of oxygen and iron exits ibn copper layers. Wearing test shows that the wear-resisting property of Cu-cladded diamond wheel is superior to that of general diamond wheel, and that of diamond of which Cu-cladded thickness is deposited more thickly by multi-steps cladding process is better.
文摘Wheel dressing is an important part of grinding, it influences not only the grinding quality ofthe workpiece,but also the cost of grinding.At present the single point mined diamond is widelyused as dresser in industry.Because the mined diamond is rare in nature and dear,it has a practicalsignificance to find a substituting material for the mined diamond.Due to the isotropy of PCD(polyerystalline diamond),new sharp cutting edges will expose continuously during dressing opera-tions,maintaining high dressing efficiency.Tests show that dressing corundum wheel,especiallydressing those for internal grinding,PCD dresser is suitable to common hardnesses,and grains ofwheels and smaller depth of dressing.The authors consider that PCD dressing can be used to sub-stitute completely the mined diamond dresser and the cost of dressing may be reduced.
基金This project is supported by Foundation of Xiamen Univer sity of China for Scholars Return from Abroad (No.08003).
文摘A new idea for designing wheel patterns is presented so as to solve theproblems about machining accuracy of workpiece and wear of honing wheel in ultra-precision planehoning. The influence factors on motion principle and pattern structures are analyzed andoptimization machining parameters are obtained. By calculating effective cutting length on thesurface of workpiece cut by wheel's abrasive and the orbit of one point on the surface of workpiececontacting with wheel, the wear coefficient of different kinds of wheels and accuracy coefficient ofworkpiece machined by corresponding wheels are obtained. Furthermore, the simulation results showthat the optimal pattern structure of wheel turns out to have lower wheel wear and higher machiningaccuracy.
