利用迴轉式超音波於陶瓷煞車片鑽孔之實驗設置與研究

Experimental Set-up and Feasibility in Rotary Ultrasonic Drilling of Ceramic Composites Brake

蕭國忠(Guo-Zhong Xiao)

指導教授 ： 郭桂林教授

國立臺北科技大學/機電學院/車輛工程系所/碩士(2005年)

https://doi.org/10.6841/NTUT.2005.00333

摘要

固定式超音波加工之材料移除是來自於自由磨粒的隨機衝擊，相對的工具也會產生磨耗，且孔穴側面容易產生錐孔現象。迴轉式超音波加工之材料移除機制，除了固定式超音波加工之衝擊移除機制外，還有磨削及滾削二種材料移除機制。相較於固定式超音波加工，其加工阻抗減小、材料移除效率增加、加工精度高及面粗度更低。
本研究之目的乃是利用超音波加工之原理與特性，以及自行開發之自走迴轉式超音波鑽孔機進行陶瓷煞車片鑽孔加工之實驗設置與研究，並規劃超音波鑽孔之孔位自動定位路徑以取代傳統手工鑽孔作業。考量加工品質及加工效率，希望藉由迴轉式之加工方式，研究超音波加工於陶瓷煞車片之加工可行性，並探討其工具磨耗、材料移除機制、圓孔品質、孔徑誤差與加工實驗參數間之關聯性。

關鍵字

迴轉式 ； 超音波 ； 材料移除

並列摘要

The primary material removal mechanism of ultrasonic machining(USM) comes from random abrasive machining, and therefore, tool wear occurs and a cone or cave is produced. Rotary ultrasonic machining(RUM) is a hybrid machining process that combines the abrasive machining and the abrasive sliding and rolling. RUM results in higher material removal rates(MRR), less machining impedance, higher machining precision and less surface roughness than USM.
In this current study, the experimental set-up and feasibility of rotary ultrasonic drilling on ceramic composite brake are investigated applied to the theory and the characteristics of RUM. Besides, the drilling path planning is also studied to replace the traditional manual drilling. The tool wear, MRR mechanism, the hole quality, the error of the diameter and the relationship between the experimental parameter are discussed under the consideration of machining quality and machining efficiency by RUM.

並列關鍵字

Rotary ； Ultrasonic ； Material Removal

參考文獻

[12] E.A. Neppiras, "Macrosonics in industry, 1. Introduction," Ultrasonics, 1972, pp. 9-13.

[13] K.F. Graff, "Macrosonics in industry, 5. Ultrasonic machining," Ultrasonics, 1975, pp. 103-109.

[14] Anonymous, "Ultrasonic drilling with a diamond impregnated probe," Ultrasonics, Vol. 2, 1964, pp. 1-4.

[15] P. Legge, "Machining without abrasive slurry," Ultrasonics, Vol. 2, 1966, pp. 157-162.

[16] L. Balamuth, "Utrasonic assistance to conventional metal removal," Ultrasonics, 1966, pp. 125-130.