軸節式微型工具機結構最佳化之設計與微銑削動態特性之研究

The Study of optimal structure design of toggle-type Micro machine tool and dynamic characteristics of Micro Milling

蔣若舜(Zu-Shun Chiang)

指導教授 ： 王世明

中原大學/工學院/機械工程學系/碩士(2007年)

https://doi.org/10.6840/cycu200700736

摘要

設計一台微切削的工具機不外乎就是重視其變形量大小，本論文採用軟體ANSYS對設計的機構元件做分析，包括：（1）靜態分析：用來找出每個機構零件其變形量在100nm以下的設計尺寸；（2）模態分析：求出共振頻率避開共振點，且可以從模態圖振動的方向去補足剛性較低的結構；（3）簡諧分析：可以將模態分析的共振點做更深入的探討，找出共振點時振幅的大小。
設計完微型工具機後，接著探討最佳的切削參數，本論文採用瞬時投影面積的數學模型，且推導出利用刀具半徑、主軸轉速、徑向切深、進給速度等參數來做為瞬時切削投影面積的函數，並使用軟體mathematica算出瞬間面積大小，預測出切削過程裡所產生的切線切削力、徑向切削力和軸向切削力。
在本實驗裡利用鋁（Al 6061 T6）找出在不同切削條件下找出適合的進給速度、軸向切深等切削參數，做為日後切削加工的依據。

關鍵字

切削力 ； ANSYS ； 微切削

並列摘要

To care deformations is the most important for designing a micro cutting of Computer Numerical Control (CNC). This paper made the machine by ANSYS includes: (1) Static analysis: To find out the deformations of each parts of CNC are below 100nm. (2) Modal analysis: To find out the natural frequency to avoid them, and can watch out some weak structures from the modal drawing. (3) Harmonic analysis: To research the results of the modal analysis, and to make sure the amplitudes at resonance.
Finish to design the micro CNC, I have to investigate the adaptable parameters for cutting. This paper had calculated tool’s radius, spindle’s rotational speed, radial depth, and feed speed by the instantaneous cutting areas of the cutting forces model. To find out the instantaneous cutting areas by mathematica which can calculate the tangential, radial and axial component of cutting forces during cutting.
To find out aluminum’s (Al 60601 T6) cutting conditions, like the adaptable feed speed and axial depth for cutting in the future.

並列關鍵字

micro cutting ； cutting forces ； ANSYS

參考文獻

參考文獻

[1] Hyung Wook Park, Steven Y. Liang, October 15-17, 2007, “Analysis of the scale effect for microscale machine tools”, MSEC2007-31034.

[2] B.S. Kim, S.M Lee, S.H. Lee, M.G. Lee, J.Y. Song, C.W.Lee, October 15-17, 2007, “Analytical approaches to understand structural characteristics of miniatiurized mechanical structures”, MSEC2007-31051.

[3] Roy C. Ko, Wang-Lin Liu, October 15-17, 2007, “Design and implementation of a high bandwidth servo controller for micro-machining center”, MSEC2007-31066.

[4] Atul Dhanorker, Xinyu Liu, Tuğrul 頊el, October 15-18, 2007, “Micromilling process planning and modeling for micromold manufacturing”, MSEC2007-31070.