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研究生:林嘉瑞
研究生(外文):Lin, Chiajui
論文名稱:模具研磨過程中之接觸力量測
論文名稱(外文):Contact Force Measurement in Mold Grinding Process
指導教授:劉昭華劉昭華引用關係
指導教授(外文):Liu Chaohwa
學位類別:碩士
校院名稱:淡江大學
系所名稱:機械工程學系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:1997
畢業學年度:85
語文別:中文
論文頁數:95
中文關鍵詞:研磨接觸力應變式動力計模具研磨自動化
外文關鍵詞:grinding contact forcestrain gage type dynamometerautomatic mold grinding
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這篇研究論文的目的,是在說明作者所自行設計與製作的應變規式動力
計,並利用此動力計量測研磨過程中水平及正向研磨力。此動力計可分為
支撐平台及感測器本體兩部分,其中感測器本體係採用環型動力計的方式
,並採韌性及強度佳之彈簧鋼為材料。感測結果先經訊號放大,及類比數
位轉換後,並結合VIEWDAC軟體從事分析處理。作者利用這套設備,量測
自動研磨系統中之研磨力,此系統係將手持研磨機裝置於數值控制工具機
之上進行研磨。作者針對三種模具常用材料、三種研磨機轉速、三種工具
機進給速率及二種刀具直徑進行研磨實驗,並探討這些因素對研磨力及表
面粗糙度的影響。研磨結果以田口法分析表面粗糙度,透過變異數分析各
研磨條件對表面粗糙度之貢獻率,得知刀具直徑對表面粗糙度影響最大,
研磨機主軸轉速次之,亦即刀具直徑愈大,表面粗糙度愈小,而研磨機主
軸愈快,則表面粗糙度亦愈小。接著作者以要因法分析實驗數據,發現對
研磨力量影響最大的四種因素,研磨機轉速,刀具直徑,材料及刀具直徑
交互作用,材料及轉速交互作用等。而對正向研磨力影響最大的因素有以
下六點:(一)研磨機轉速,(二)刀具直徑,(三)材料及刀具直徑交
互作用,(四)材料、轉速、進給速率與刀具直徑交互作用,(五)轉速
及進給速率交互作用,(六)轉速、進給速率與刀具直徑交互作用。
In the thesis, a strain gage dynamometer is designed and manu-
factured by the author, and it is used to measure the tangential
and normal grinding forces during grinding process. The
dynamometer is composed of a support plate and four sensor
blocks. Each sensor block is annulus and is made of spring
steel which has good tenacity and intensity. The dynamometer is
connected to signal amplifiers, a analog - to - digital
converter, and the software VIEWDAC for signal analysis.The
purpose is to measure grinding forces for an automatic surface
finishing system. The system is composed of a hand grinder,
mounted on the spindle of a NC machine. Tests are performed for
3 commonly used materials for molds, 3 speeds of the hand
grinder, 3 feed rates for the NC machine, and 2 tool diameters.
Effects of these factors on surface roughness and grinding
forces are investigated. By using the Taguchi method to analyze
the results for surface roughness, the author finds that the
most influential factor on surface roughness is tool diameter,
and then is the speed of the hand grinder. Factorial method is
then used to investigate the effects of the above mentioned
factors on grinding forces. Results show that the following 4
factors are more influential on tangential grinding forces :
speed of the hand grinder, tool diameter, the interaction of
material and tool diameter, and interaction of material and hand
grinder speed. For normal grinding force, the following six
factors are more influential : hand grinder speed, tool
diameter, the interaction of material and tool diameter, the
interaction of material and hand grinder and machine feed rates
and tool diameter, the interaction of hand grinder speed and
machine feed rates, the interaction of hand grinder speed and
machine feed rates and tool diameter.
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