超音波加工與傳統加工切削條件對孔品質影響研究

Research on the Influence of the Cutting Conditions on the Hole Quality by Comparing Common Cutting with Ultrasonic Cutting

王士榮(Shu-Lung Wang) ； 廖文賢(Win-Shin Liao)

《南亞學報》 29期 (2009/12) Pp. 21-33

https://doi.org/10.6989/JN.200912.0021

摘要

以超音波加工法（USM）對鑄鐵硬脆材料鑽細長孔，已被認為是一種極有效率且可獲得高精度的加工法。在USM的加工過程中，雖然脆性破壞（微切屑）支配著材料移除機構，若不能適當地控制加工參數，便會造成粗糙度差及較深的次表面裂紋。本實驗藉由USM製程對於材料移除機構、加工表面之完整性及刀具磨耗形態與加工條件相互關係之研究，來確保加工品質及增進加工效率。在實驗中以鑽石刀具及20KHz之超音波高頻振動，另外加工參數如磨粒粒徑大小及進給量及孔之品質等都是本文所討論的重點。

關鍵字

超音波加工 ； 量測檢測 ； 鑄鐵

並列摘要

Ultrasonic machining (USM) is considered to be a very effective and relatively accurate way to drill deep holes in cast iron of brittle materials. Although brittle fracture (micro-chipping) is the dominant materials removal mechanism utilized by the USM process, poor surface roughness and deep penetrated cracks are the consequence if the machining parameters are not properly controlled.To ensure the process efficiency, effort have been made in the study to correlate the material removal mechanisms, surface integrity and tool wear involved in the RUM process to the machining conditions. Diamond-impregnated tools were used in the experiment and the ultra-sonic vibration frequency was kept at 20 KHz. The effects of machining variables such as grit size, feedrate and hole quality were investigated.

並列關鍵字

Ultrasonic machining ； Measured inspection ； Cast iron