為了滿足更高精度的加工需求，液靜壓軸頸軸承技術近年被廣泛應用於工具機製造商。液靜壓軸頸軸承的性能會受到許多系統參數的影響，其尺寸參數包含軸承長度、軸承內徑、油腔尺寸與油腔數量，工作參數則包含節流器型式、油品黏滯係數、供給壓力與偏心率。然而，過去之研究大多在特定的軸承長度與內徑下探討工作參數對軸承性能的影響。因此，本研究於不同尺寸參數下探討固定流阻節流器補償之多墊型與多腔型液靜壓軸頸軸承的靜態性能(承載力、剛性與流量)。根據研究結果，多腔型具有較佳剛性的油腔尺寸會與軸承長度和內徑的比例有關，且多腔型的流量僅約為多墊型的一半。

In order to achieve high precision machining, hydrostatic journal bearing is widely adopted by machine tool manufacturers in recent years. There are various of system parameters that will affect the performance of bearings respectively. Geometry parameters include bearing length, inner diameter, recess size and number of recess. Operating parameters include restrictor type, lubricant viscosity, supply pressure and eccentricity. However, most previous studies tended to discuss the effects of operating parameters on the performance of hydrostatic journal bearings at given bearing dimensions like length and inner diameter. Consequently, this study investigates the static performance (such as load capacity, stiffness and flow) about various dimensions of multi-pad and multi-recess type hydrostatic journal bearings with constant-resistant restrictor compensation. According to the results, recess size of better stiffness for multi-recess type is relates to the ratio of bearing length to inner diameter. Also, comparative result shows that multi-recess type’s flow is neerly half of multi-pad type’s.

Keywords: finite difference method, system parameter, multi-recess, multi-pad 

第一章 緒論 1
第二章 文獻回顧 3
2-1. 液靜壓軸頸軸承的工作原理 3
2-2. 液靜壓軸承的應用 4
2-3. 液靜壓軸頸軸承的分類 7
2-4. 液靜壓軸頸軸承的研究 8
2-5. 本章結論 12
第三章 研究方法與數學模型 13
3-1. 模擬分析方法 13
3-2. 雷諾方程式 14
3-3. 流阻網路法(Lumped parameter model) 18
3-3-1. 油膜厚度非均勻 19
3-3-2. 等效電路 21
3-4. 有限差分法(Finite difference method) 23
3-4-1. 五點中央差分 26
3-4-2. 邊界條件與求解 30
第四章 多墊型液靜壓軸頸軸承 36
4-1. 參數說明 36
4-2. 參數水準與無因次性能 38
4-3. 無因次承載力 42
4-3-1. 初始壓力比值的影響 42
4-3-2. 偏心率的影響 48
4-3-3. 無因次油腔長度的影響 51
4-3-4. 無因次油腔寬度的影響 53
4-3-5. 長徑比值的影響 55
4-3-6. 油腔數量的影響 57
4-3-7. 姿態角的影響 58
4-4. 無因次剛性 67
4-4-1. 初始壓力比值的影響 67
4-4-2. 偏心率的影響 71
4-4-3. 無因次油腔長度的影響 74
4-4-4. 無因次油腔寬度的影響 77
4-4-5. 姿態角的影響 78
4-4-6. 長徑比值的影響 80
4-4-7. 油腔數量的影響 80
4-5. 無因次流量 88
4-5-1. 初始壓力比值的影響 88
4-5-2. 無因次油腔寬度的影響 92
4-5-3. 無因次油腔長度的影響 94
4-5-4. 油腔數量的影響 96
4-5-5. 長徑比值的影響 98
4-5-6. 偏心率的影響 99
4-5-7. 姿態角的影響 100
4-6. 本章結論 100
第五章 多腔型液靜壓軸頸軸承 109
5-1. 參數與水準(Level) 109
5-2. 無因次承載力 111
5-2-1. 初始壓力比值的影響 112
5-2-2. 偏心率的影響 116
5-2-3. 無因次油腔長度的影響 119
5-2-4. 長徑比值的影響 121
5-2-5. 油腔數量的影響 124
5-2-4. 無因次油腔寬度的影響 125
5-2-5. 姿態角的影響 126
5-3. 無因次剛性 134
5-3-1. 初始壓力比值的影響 134
5-3-2. 偏心率的影響 138
5-3-3. 無因次油腔長度的影響 141
5-3-4. 長徑比值的影響 144
5-3-5. 油腔數量的影響 146
5-3-6. 無因次油腔寬度的影響 147
5-3-7. 姿態角的影響 148
5-4. 無因次流量 156
5-4-1. 初始壓力比值的影響 156
5-4-2. 無因次油腔長度的影響 160
5-4-3. 長徑比值的影響 162
5-4-4. 無因次油腔寬度的影響 164
5-4-5. 油腔數量的影響 166
5-4-6. 偏心率的影響 167
5-4-7. 姿態角的影響 168
5-5. 本章結論 169
第六章 結論與未來展望 178
參考文獻 183

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