臺灣博碩士論文加值系統

本文將探討在傳統的CNC工具機插位器設計方式之下，以球銑刀切削任一曲面時所衍生出的瓶頸，進而提出一個全新的插位器設計概念，以期修正誤差、資料流等存在已久的問題。此曲面插位器（傳統的插位器大致上可分成線性及曲線兩大類）整體說來則包含了以下幾個主要的部份：線上即時的CC路徑規劃、CC路徑的插位以及刀具的加工補償。本文中提出了三種加工方式，分別是等參數、等扇形以及等剖面，將在稍後依次詳述其設計的概念與理論基礎，用以減少CNC之加工資料流過大以及提高加工精度而達到精密切削加工之最終目的。

Because of so many problems in the traditional CNC machine tool interpolator design, this paper presents a new type of it that is capable of generating the cutter path for ball-end milling of a free-form surface. The surface interpolator comprises three major points as follows: On-line algorithms for cutter-contact CC path scheduling, CC path interpolator, and tool offsetting. There are three kinds of interpolator algorithms, iso-parametric, iso-scallop and iso-planar respectively. The proposed surface interpolator gains the advantages for minimizing the data feeding to the CNC machine tool and maintaining the desired feedrate and more position accuracy along the CC path.

中文摘要……………………………………………………………Ⅰ
英文摘要……………………………………………………………Ⅱ
目錄……………………………………………………………Ⅲ
圖表目錄……………………………………………………………Ⅴ
第一章 緒論……………………………………………………………1
1 —1 前言……………………………………………………………1
1 —2 研究動機與目的………………………………………………1
第二章 CNC工具機之概述與插位器角色之定位………………………4
2 —1 CC速度補償的原理與其必要性………………………………4
2 —2 插位器在整個加工過程中所扮演的角色……………………6
2 —3 CNC工具機加工流程總觀……………………………………6
第三章 刀具路徑規劃與插位器概述…………………………………7
3 —1 刀具路徑規劃之概述…………………………………………7
3 —2 插位器之基本概述……………………………………………9
第四章 路徑規劃與插位器的理論概述………………………………11
4 —1 CC路徑之插位…………………………………………………11
4 —2 刀具的補償……………………………………………………12
第五章 CC路徑規劃與曲面插位器的理論推演………………………14
5 —1等參數工具機之理論推演……………………………………14
5 —2等扇形高度工具機之理論推演………………………………20
5 —2 —1現有設計方式與新發展設計方式之不同點…………21
5 —2 —2等扇形高度之設計步驟………………………………23
5 —3等剖面高度工具機之理論推演………………………………30
5 —3 —1等剖面高度之設計理論………………………………31
5 —3 —2等剖面高度之設計公式演算推導……………………31
5 —4插位器的附加功能─刀具干涉的避免………………………35
第六章 應用範例之電腦模擬與結果討論……………………………37
6 —1應用範例之敘述………………………………………………37
6 —2電腦模擬之描述………………………………………………37
6 —3結果與討論……………………………………………………43
參考文獻………………………………………………………………45

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