In this paper, the equation of the projection of hob helicoid has also been deduced and the projection is compared with the basic rack nomal profile. 文中還求出了滾刀螺旋面的投影方程式，并與媒介齒條法面齒廓方程做了比較。
By way of a measuring face tageut with flauk profile andameasuring contact jigging along the tooth facem theminimundistance can be measured to show the batpitchdeviation. 利用一個(gè)與齒廓相切的測量面以及一沿齒面擺動(dòng)的測量觸頭量得最小距離從而反映出基節偏差值。
Then, a theoretical foundation is established for gear generation with arbitary profile. 從而為范成法加工任意齒形的齒輪奠定了理論基礎。
The shaving stock of preshaving gears has direct influence on the shaving effect and the tooth profile of preshaving cutters. 剃前齒輪的留剃量形式直接影響剃齒效果及剃前刀具齒形。
