本文選題：齒輪齒條 + 變位��； 參考：《機械傳動》2017年11期

【摘要】：建立了齒輪齒條傳動的熱彈流潤滑模型,考慮齒輪熱效應和正負變位齒輪沿嚙合線在不同嚙合點的綜合曲率半徑變化、卷吸速度的變化和單雙齒嚙合引起的載荷變化,分析齒輪齒條傳動機構在不同瞬時、載荷隨時間變化的非穩(wěn)態(tài)彈流潤滑數(shù)值解。討論了變位系數(shù)對齒輪齒條彈流潤滑油膜壓力和膜厚的影響并分析了正變位和負變位對中心膜厚和最小膜厚的影響規(guī)律。結果表明,正變位可以降低油膜壓力,增加膜厚,改善齒輪齒條機構的潤滑狀態(tài);負變位使油膜壓力升高,膜厚變薄。因此,設計齒輪齒條傳動機構時,在符合要求的前提下,應盡量選擇正變位齒輪,避免選擇負變位齒輪。
[Abstract]:The thermo-elastohydrodynamic lubrication model of gear rack transmission is established. The thermal effect of gear and the variation of the synthetic curvature radius of positive and negative gear along the meshing line at different meshing points, the change of entrainment speed and the load change caused by single and double tooth meshing are considered. The unsteady elastohydrodynamic lubrication numerical solution of gear rack transmission mechanism with different instantaneous load and time variation is analyzed. The influence of displacement coefficient on film pressure and film thickness of elastohydrodynamic lubricating oil for gear rack was discussed and the influence of positive and negative displacement on the central film thickness and minimum film thickness was analyzed. The results show that the positive displacement can reduce the oil film pressure, increase the film thickness and improve the lubrication state of the gear rack mechanism, and the negative displacement can increase the oil film pressure and thin the film thickness. Therefore, in the design of gear rack transmission mechanism, the positive modified gear should be selected as far as possible and the negative modified gear should be avoided under the premise of meeting the requirements.
【作者單位】： 青島理工大學機械工程學院;
【基金】：國家自然科學基金(51575289)
【分類號】：TH132.41

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本文編號：2065280