【摘要】：徑向剃齒刀是一種高效的齒輪精加工刀具,但是需要針對不同的齒輪設計不同的刀具,設計工作量大。本文結合刀具生產企業(yè)對徑向剃齒刀設計的迫切需求,開發(fā)徑向剃齒刀CAD系統(tǒng),實現(xiàn)刀具的參數(shù)化設計,為實現(xiàn)徑向剃齒刀計算機輔助制造奠定了基礎。首先,基于微分幾何與齒輪嚙合原理的基礎上,建立了徑向剃齒刀加工標準齒輪的數(shù)學模型,并得到了徑向剃齒刀的齒面方程和齒面點坐標值。通過對比徑向剃齒刀齒面與其最接近的標準漸開螺旋面,以修形量的形式表示出來,得到了其齒形、齒向設計曲線。分析軸交角、刀具齒數(shù)對徑向剃齒刀齒面修形量的影響。其次,徑向剃齒刀加工修形齒輪的模型,修形齒輪齒面通過其法向修形量與標準齒輪齒面來確定,根據(jù)修形齒輪的修形量計算徑向剃齒刀修形量。分析齒輪鼓形量對徑向剃齒刀齒面修形量的影響。再次,在徑向剃齒刀容屑槽的不同排列方式下,分析被剃齒輪齒號與刀具齒號之間的嚙合關系,得到了被剃齒輪齒面剃痕與刀具齒號之間的關系。在單槽距排列下計算了容屑槽錯位量的大小,提出了錯位量驗算指標。最后,徑向剃齒刀CAD總體系統(tǒng)劃分為四大模塊:基本參數(shù)輸入模塊、刀具設計計算模塊、CAD繪圖模塊、數(shù)據(jù)庫處理模塊。在VC++6.0的平臺上,利用AutoLISP工具進行軟件的設計,實現(xiàn)了系統(tǒng)設計的參數(shù)化。該刀具CAD軟件最終實現(xiàn)徑向剃齒刀二維工程圖的輸出。
[Abstract]:Radial shaving cutter is an efficient gear finishing tool, but it needs to design different cutting tools for different gears. In this paper, the CAD system of radial shaving cutter is developed in order to realize the parametric design of the cutter, which lays a foundation for the computer-aided manufacture of radial shaving cutter. Firstly, based on the meshing principle of differential geometry and gear, the mathematical model of standard gear machining with radial shaving cutter is established, and the tooth surface equation and tooth surface coordinate value of radial shaving cutter are obtained. By comparing the tooth surface of radial shaving cutter with its standard involute spiral surface, the tooth shape and tooth direction design curve of radial shaving cutter are obtained in the form of modification. The influence of the shaft intersection angle and the number of cutter teeth on the profile modification of radial shaving cutter is analyzed. Secondly, the model of machining modified gear with radial shaving cutter, the tooth surface of modified gear is determined by its normal modification and standard gear tooth surface, and the modification quantity of radial shaving cutter is calculated according to the modification of modified gear. The influence of gear drum shape on tooth surface modification of radial shaving cutter is analyzed. Thirdly, the meshing relationship between the shaved gear number and the cutter tooth number is analyzed under the different arrangement of the shaved tooth shaving cutter, and the relationship between the shaved gear tooth face and the cutter tooth number is obtained by analyzing the meshing relationship between the shaved gear tooth number and the cutter tooth number. The size of the dislocation quantity of the chip-holding slot is calculated under the arrangement of single slot spacing, and the checking index of the dislocation quantity is put forward. Finally, the overall system of radial shaving cutter CAD is divided into four modules: basic parameter input module, tool design and calculation module, CAD drawing module, database processing module. On the platform of VC 6.0, the software is designed by using the AutoLISP tool, and the parameterization of the system is realized. The CAD software of the cutting tool finally realizes the output of the two-dimensional engineering drawing of the radial shaving cutter.
【學位授予單位】：西安工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TG721

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