In order to establish precise grinding cutter model of straight bevel gear, this study projects the spherical involute that forms tooth profile of bevel gear into the involute of circle approximately, and makes a simulation model database of bevel gear according to the principle of mechanical design on the basis of CAD mapping software. With the central projection method, processing devices and cutters of involute straight bevel gear can also be designed which has no concern with modulus. The results show that the establishment of simulation database and processing cutters can greatly facilitate the design and processing of straight bevel gear, greatly reduce the design and finishing costs, and is also helpful to teaching training of gear.

Based on field survey, we had a discuss on the grange character and problem on energy-saving of Yangling in Shanxi Province, whats more, site selection, spatial arrangement of housing colony, straw-bale application, comprehensive application of a variety of energy resources and afforest were mentioned and illustrated in detail as the energy-saving measures for grange, which would have active effect on the construction of low-energy consumption and ecological residence in Yangling region.