刀具壽命預測及斷刀偵測為基礎之印刷電路板鑽孔機自動換刀策略研究

The Study of Automatic Tool Change Strategy of A PCB Drilling Machine Base on Toll Life Prediction and Toll Breakage Detection

張義芳(Yih-Fang Chang) ； 林廷鋒(Ting-Feng Lin)

《大葉學報》 12卷1期 (2003/06) Pp. 73-83

https://doi.org/10.7119/JDYU.200306.0073

摘要

本研究主要針對工業界的印刷電路板（PCB）鑽孔機，建立刀具壽命模型、刀具壽命管理資料庫、斷刀檢測與換刀控制程序模組於一開放式架構的電腦數值控制器（CNC）中。建立斷刀檢測器與控制器的連線，並製作換刀巨集程式後，將此巨集建立在系統程式內，可讓CNC在無人操作狀態下鑽針折損時能自動更換鑽針，繼續加工而不需停機。同時能夠自動地對刀具壽命作判定，不僅讓操作者知道刀具壽命還剩多久，還能因鑽針磨耗過大必須捨棄時，通知控制器自動取用同一規格的鑽針繼續執行鑽孔作業，以減少機器停頓之機會，也提升了鑽孔的品質，以達到工時大幅的減少，人力節省的機台自動化的效果。

關鍵字

PCB鑽孔機 ； 電腦數值控制器 ； 刀具壽命 ； 斷刀檢測

並列摘要

A Tool life model for the printed circuit board (PCB) drilling process will be established to predict the tool life. The tool exchange controller built in an open computerized numerical controller (CNC) can automatically remove the worn drill while the life is finished according to the model. The drill breakage detector is connected with the CNC given that the controller in the CNC can remove the broken drill automatically without machining termination. The exchange controller is installed through the macro function in the open CNC, which can detect the tool breakage via the sensor mounted on the main axis. Tool management is also installed by macro function, which can monitor the tool life during the whole drilling process. A new drill will be found and reset on the main axis by the exchange controller while management finds the terminated life of a tool. The machining time is reduced and machining accuracy can be maintained while the controller works in the CNC. The deviation error and machining time will be verified through the experiments. The error is constrained below a desired specification and the operation time will reduce compared with that of a manual operation.

並列關鍵字

PCB drilling machine ； CNC ； tool life ； tool fracture indicator