成形砂輪之修整研究

Study on the Dressing of Grinding Profile Wheels

陳德楨(Der-Jen Chen)

指導教授 ： 楊宏智

國立臺灣大學/工學院/機械工程學研究所/博士(2004年)

https://doi.org/10.6342/NTU.2004.02120

摘要

在精密研磨加工中，如何去改善砂輪的修整精度是相當重要的關鍵因素。本研究針對成形砂輪開發出一套具有磨耗補正功能的線上修整系統，以非接觸式光學影像量測技術，經過修整前後分別取像，分析砂輪邊緣位置變化，以求出其最大的磨耗量，來作為修整時機的判斷依據及砂輪的修整量。
在修整砂輪時，相較於輪廓鑽石、鑽石頭等刀具，本研究採用低修整力、較省時、較彈性、耐磨耗的鑽石磨輪來進行輪廓修整。本系統並同時檢測出鑽石磨輪刀鼻半徑的磨耗值，以直接對修整路徑進行補正，使砂輪的修整精度可達 0.01 mm 的要求。
此外，為驗證其結果而對兩種不同粒度的砂輪在不同的修整條件下進行一連串的線上修整測試，目前得到之成果印證十分良好，而且由實驗證明垂直修整力的變化將有助於作為最少修整次數的判斷準則，對修整效率的提升助益匪淺。

關鍵字

修整 ； 鑽石磨輪 ； 磨耗 ； 砂輪

並列摘要

The importance of improving the dressing accuracy for profile grinding wheels has been increasingly emphasized. In this study, an on-line dressing system of profile grinding wheels was presented. An non-contact image process method was used to evaluate the position deviation of grinding wheel’s edge in judging of dressing initiation and the amount needed to be dressed.

Diamond form rollers were selected to generate the profile grinding wheels with steep profile flanks because of their high flexibility, short dressing times and low wear. A series of grinding and dressing tests were carried out to verify the dressing accuracy and surface quality for the profile grinding wheels. Through experimental investigations, it is confirmed that the dressing force is useful in determining the optimum number of dressing passes. The importantance lies in the fact that dressing time and the waste of dresser and grinding wheel are minimized. It was found that grinding wheel and workpiece roughness were greatly influenced with a variation in speed ratio, cross feed and roller profile radius.

並列關鍵字

Grinding Wheel ； Wear ； Diamond Form Rollers ； Dressing

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