Basic principles of non - equivalent machining of spatial cam surfaces 空間凸輪廓面非等價加工的基本原理
Processing principle of spatial cam ( sc ) is analyzed intensively 對空間凸輪的加工工藝進行了深入地分析和研究。
The experiment has proved that those methods can realize precision measurement for spatial cams and reverse design of spatial cam follower motion specifications rapidly and accurately 實驗結果表明,該方法能快速、準確地實現(xiàn)空間凸輪的精密測量及從動件運動規(guī)律反求。
The cam contour curves are reconstructed by nurbs , and a rapid reverse design method for spatial cam follower motion specification via motion simulation is also studied 利用nurbs實現(xiàn)了凸輪輪廓曲線的重構,并給出基于運動仿真實現(xiàn)迅速反求空間凸輪機構從動件運動規(guī)律的方法。
Precision measurement method for spatial cams and probe - radius compensation method are presented in this paper according to spatial cam characteristics , and a specified measure program that can realize real - time probe - radius compensation is programmed 摘要根據(jù)空間凸輪的特點,給出了空間凸輪精密測量及剛球半徑補償方法,并編制了可實現(xiàn)實時測球半徑補償?shù)目臻g凸輪專用測量程序。
This thesis emphasizes on the mechanics feature of the spatial cam sliding tooth transmission , and the corresponding numerical computing software is developed . all of these offer a feasible method and prompt tool for the intensity design of the new precision transmission 本文著重對空間凸輪活齒傳動的力學特性進行研究,并開發(fā)相應的數(shù)值計算軟件,從而為該新型精密傳動的強度設計提供有效的方法和快捷的工具。
5 ) under the pro / engineer circumstance , the contact finite element analysis method of the spatial cam sliding tooth transmission are established ; using the i - deas software , the corresponding contact finite element analysis has been done . comparing 5 )在pro / engineer環(huán)境下建立了空間凸輪活齒傳動的接觸有限元分析模型,運用i - deas軟件進行了相應的接觸有限元分析,并將有限元分析的結果與基于赫茲理論的計算結果進行了對比分析,二者吻合。
Major contents of the thesis are as follows : 1 ) based on brief introduction of the profile theory about the spatial cam sliding tooth transmission , those formulas correlated to the mechanics feature are deduced to calculate the geometrical parameters ; 2 ) according to the hertz contact theory in elastic - mechanics , the mechanics analysis model of the spatial cam sliding tooth transmission is built up ; the deformation harmonizing conditions at each contact point are erected ; the force analysis formulas of point contact are deduced and the resolution method is presented ; 3 ) the numerical calculating software about the deformation of the spatial cam sliding tooth transmission is developed ; using the software , the force characteristics of the spatial cam sliding tooth transmission are calculated with different design parameters ; the general law on force characteristics of this transmission is obtained 論文的主要內容包括: 1 )在簡要介紹空間凸輪活動傳動齒廓理論的基礎上,推導了與力學特性相關的幾何參數(shù)的計算公式。 2 )建立了空間凸輪活動傳動的力學分析模型;依據(jù)彈性力學赫茲接觸理論,建立了各接觸點之間的變形協(xié)調條件,推導了空間凸輪活齒傳動點接觸受力分析公式,并給出了求解的方法。 3 )開發(fā)了關于空間凸輪活動傳動受力變形的數(shù)值計算軟件;應用該軟件,對不同設計參數(shù)的空間凸輪活齒傳動的受力特性進行了數(shù)值計算,獲得了該傳動受力變形的一般規(guī)律。
The author proposes a new contact point regress method which can be applied to any type of sc profile inspection by use of coordinate measuring machine ( cmm ) , establishes a mathematical model for data processing and error evaluation method , solves the puzzles of the spatial cam profile inspection and error calculation 提出了以三坐標測量機為工具,適合于任何形式空間凸輪廓面檢測的接觸點回歸法,給出了數(shù)據(jù)處理的數(shù)學模型和誤差計算方法,解決了空間凸輪廓面檢測與誤差計算的難題。
Focusing on the spatial cam mechanism ( scm ) , the dissertation , starting with the practical processing and the characteristics of the structure and meshing , detailedly analyzes and experiments research the structure theory , processing error and , one - side process and profile inspection of scm with spatial meshing principle and rotating transformation matrix operator methods 本文以空間凸輪機構為研究對象,從工程實際出發(fā),以空間嚙合原理和旋轉變換矩陣為工具,從結構特點、嚙合特性入手,對空間凸輪機構的結構設計、加工誤差、單側面加工工藝及廓面檢測技術進行了深入地理論分析和實驗研究。