發(fā)布時間：2019-05-08 01:55

【摘要】：在傳統(tǒng)的RV減速器設(shè)計中，沒有考慮諸多可控因素和不可控因素對RV減速器傳動機(jī)構(gòu)質(zhì)量特性的影響。而穩(wěn)健設(shè)計作為一種新型提高產(chǎn)品質(zhì)量的工程設(shè)計方法，運用到RV減速器設(shè)計中能很好地解決這一問題。因此，本論文基于穩(wěn)健設(shè)計思想，對影響RV減速器質(zhì)量特性的尺寸鏈裝配誤差、回差、傳動誤差等方面做了一定的研究和探討，主要內(nèi)容如下： (1) RV減速器的尺寸鏈制造誤差的穩(wěn)健設(shè)計。由于RV減速器組成零件偏少，屬于少環(huán)尺寸鏈，而傳統(tǒng)的尺寸鏈誤差描述函數(shù)多用正態(tài)分布描述，這在少環(huán)尺寸鏈中不能完全適用，必將帶來尺寸鏈誤差難以準(zhǔn)確控制這一缺點，本文提出運用分布來描述少環(huán)尺寸鏈的誤差分布，建立以目標(biāo)值微調(diào)的尺寸鏈加工誤差控制模型，，運用穩(wěn)健設(shè)計中擴(kuò)大操作空間的設(shè)計思想，能有效地減小諸如RV減速器這樣少環(huán)又有高精度要求尺寸鏈的誤差，并以實際例子進(jìn)行驗證。 (2)利用Taguchi穩(wěn)健設(shè)計思想對RV減速器的回差進(jìn)行穩(wěn)健設(shè)計。首先分析影響RV減速器回差的主要因素，并歸納出這些因素哪些可以作為設(shè)計變量（可控因素）哪些可以作為噪聲因素（不可控因素）。建立可控因素與不可控因素水平表，分析目標(biāo)值的歸屬類型，并選用合適的正交表格進(jìn)行正交試驗。運用考慮信噪比的Taguchi穩(wěn)健設(shè)計方法對試驗結(jié)果進(jìn)行分析并得出減小回差的最佳組合，并與單純正交試驗直觀分析法做對比，分析優(yōu)劣，最后得出比實例擁有更小回差的穩(wěn)健設(shè)計參數(shù)組。 (3)針對RV減速器傳動誤差控制，我們首先分析影響鉸接四桿機(jī)構(gòu)的誤差的主要因素，考慮各桿的制造誤差，提出將四桿機(jī)構(gòu)轉(zhuǎn)動角度作為噪聲因素引入到穩(wěn)健設(shè)計中去，建立以四桿長度為設(shè)計參數(shù)，轉(zhuǎn)角為噪聲因素的正交試驗表，并利用VB和Matlab軟件進(jìn)行正交試驗中涉及的運算，得出一組滿意的穩(wěn)健設(shè)計參數(shù)組。 (4)進(jìn)行RV減速器的擺線針輪行星減速部分的穩(wěn)健設(shè)計。在傳統(tǒng)的優(yōu)化設(shè)計的基礎(chǔ)之上，將不可控因素的穩(wěn)健性作為約束條件考慮到優(yōu)化模型中，在約束函數(shù)的優(yōu)化設(shè)計中引入使其靈敏度為最小的目標(biāo)函數(shù)來實現(xiàn)穩(wěn)健性的設(shè)計方法。建立與之對應(yīng)的RV減速器擺線針輪行星減速部分的穩(wěn)健優(yōu)化的數(shù)學(xué)模型，并用實例對模型進(jìn)行驗證計算。
[Abstract]:In the design of the traditional RV reducer, the influence of many controllable and uncontrollable factors on the quality characteristics of the transmission mechanism of the RV reducer is not considered. As a new engineering design method to improve product quality, robust design can solve this problem very well in the design of RV reducer. Therefore, based on the idea of robust design, this paper does some research and discussion on the assembly error, return error and transmission error of dimension chain which affect the quality characteristics of RV reducer. The main contents are as follows: (1) robust design of dimension chain manufacturing error of RV reducer. Because the RV reducer has fewer parts and belongs to the small ring size chain, the traditional dimension chain error description function is mostly described by normal distribution, which can not be fully applied in the small ring size chain. This paper proposes to use the distribution to describe the error distribution of the small ring dimension chain, and to establish the machining error control model of the dimension chain with the target value fine adjusted. The design idea of expanding operation space in robust design can effectively reduce the error of dimension chain such as RV reducer with few rings and high precision, and it is verified by a practical example. (2) using the idea of Taguchi robust design to design the backlash of RV reducer. This paper first analyzes the main factors that affect the return error of RV reducer, and sums up which factors can be used as design variables (controllable factors) and which can be used as noise factors (uncontrollable factors). The level tables of controllable factors and uncontrollable factors were established, the types of target values were analyzed, and the orthogonal test was carried out with appropriate orthogonal tables. The Taguchi robust design method considering the signal-to-noise ratio is used to analyze the test results and obtain the best combination to reduce the return error, and compared with the simple orthogonal test intuitive analysis method to analyze the advantages and disadvantages of the test results. Finally, the robust design parameter group with smaller backlash than the example is obtained. (3) in view of the transmission error control of RV reducer, we first analyze the main factors that affect the error of the hinged four-bar mechanism, consider the manufacturing error of each rod, and propose that the rotation angle of the four-bar mechanism be introduced into the robust design as a noise factor. An orthogonal test table with four bar length as design parameter and rotation angle as noise factor is established, and a set of satisfactory robust design parameters is obtained by using VB and Matlab software to carry out the operation involved in orthogonal test. (4) the robust design of the planetary deceleration part of cycloidal pin wheel of RV reducer is carried out. On the basis of the traditional optimization design, the robustness of uncontrollable factors is considered as a constraint condition in the optimization model. In the optimization design of the constraint function, the objective function with the minimum sensitivity is introduced to realize the robustness design method. The mathematical model of robust optimization for the planetary deceleration part of cycloidal pin wheel of RV reducer is established and verified by an example.
【學(xué)位授予單位】：大連交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH132.46

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本文編號：2471532