臺灣博碩士論文加值系統

本文係根據齒輪原理(Theory of Gearing)與微分幾何(Differential Geometry)進而提出一種新的單一刀具切削戟齒輪設計流程。在過去，小輪切削刀具參數是分別在大輪驅動面與非驅動面的計算點上藉由局部共軛理論推導而成，然而推導出的內刀與外刀的刀半徑差異過大，以至於無法安裝在同一個刀盤上，所以小輪的驅動面與非驅動面通常是由不同的刀盤切削而成。為了使小輪的內刀與外刀可以安裝在同一個刀盤上，本文提出一種創新的戟齒輪設計流程－單一刀具法。藉由改變內刀與外刀的壓力角來調整刀具計算點曲率半徑，使得大輪與小輪的刀具面能夠在節面上重合，且內刀與外刀刀半徑必須控制在合理的範圍之內。因此利用單一刀具法，小輪的兩側齒面可以在同一切削循環內由同一台CNC戟齒輪創成機切削而成。

Based on the theory of gearing and differential geometry, a novel uni-tool manufacturing process for hypoid gear set is developed. In the past, the cutter geometry for pinion cutting is derived according to the local synthesis data at the calculation point on the driving and coast gear tooth surfaces. The point radius difference between the inside blade (I.B.) and outside blade (O.B.) of the pinion cutter might be too big to fit in the same head cutter. Therefore, the driving and driven sides of pinion are usually cut in the different hypoid generator with different head cutter. In order to make sure the I.B. and O.B. of pinion can be installed on the same cutter head, a novel hypoid gear uni-tool design process is developed by modifying the I.B. and O.B. pressure angle to adjust the point radius difference and making the pinion and gear cutter cone surface coincides with each other in the pitch plane. The point radius difference of I.B. and O.B. is controlled within the allowable range to fit in the same cutter head. With this uni-tool feature, both side of tooth surface of pinion can be cut in the same CNC hypoid generator in the same cutting cycle.

摘要 I
Abstract II
目錄 III
圖目錄 VI
表目錄 VIII
參數符號 IX
第一章 緒論 1
1-1 前言 1
1-2 研究動機與目的 1
1-3 文獻回顧 2
1-4 論文架構 2
第二章 傳統戟齒輪設計 4
2-1 傳統戟齒輪設計流程 4
2-2 初始節錐對與齒胚設計 4
2-3 工藝節錐設計 5
2-4 大齒輪機械設定與切削 7
2-4-1 切齒節錐 7
2-4-2 泛用型座標系統 10
2-5 大、小齒輪嚙合點 12
2-6 小齒輪刀具壓力角與切齒節錐 14
2-6-1 曲面曲率 14
2-6-2 小輪完全共軛曲面 16
2-7 小齒輪刀具壓力角與切齒節錐 19
2-7-1 小齒輪計算點處的螺旋角與壓力角 19
2-7-2 小輪切齒節錐 20
2-7-3 小齒輪一般創成刀具推導 21
第三章 單一刀具法戟齒輪設計 25
3-1 單一刀具法計算流程 25
3-2 刀具共軛關係及共軛刀具壓力角 25
3-3 變滾比修整 27
3-3-1 計算點補正 28
3-3-2 曲率補正 29
3-4 小輪切削刀具與加工機械設定 30
3-4-1 小輪切齒節錐 30
3-4-2 單一刀具法小輪刀具推導 31
2-7-4 加工機械設定 33
第四章 數值範例 34
4-1 齒胚設計 34
4-1-1 初始節錐對 34
4-1-2 完整齒胚 35
4-2 傳統戟齒輪設計方法大輪切銷結果 36
4-3 單面切削法小輪切削結果 38
4-4 單一刀具法小輪切削結果 40
4-5 拓譜誤差分析(ease-off) 42
4-5-1 單面切削法與完全共軛面誤差比較 42
4-5-2 單一刀具法與完全共軛面誤差比較 43
4-5-3 單面切削法與單一刀具法誤差比較 44
第五章 結論與未來展望 45
5-1 結論 45
5-2 未來展望 45
參考文獻 46

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