臺灣博碩士論文加值系統

在生產的過程中, 夾具的設計及使用, 一直是一項重要的技術。而隨著產
品外型日趨多樣化, 和多軸加工機具被廣泛的使用, 夾具的使用也要做相
對的修正。在多軸加工過程中, 工作檯與刀具之間的相對運動, 造成刀具
切削力之方向不固定, 不再為傳統三軸加工的XYZ方向。因此夾具夾持點
的設計要加強垂直方向的夾持。而工件外型包括曲面、曲線, 則定位的方
法也要加以修正。本研究乃以V 型塊定位的概念, 應用於多軸加工之夾持
與定位點決定, 並引入夾具結構設計的運算法則中。配合電腦輔助設計軟
體, 及刀具加工模擬軟體, 將夾具結構設計之結果在CAD 軟體下環境下完
成組裝、驗證的工作。

Fixtures are important tools in manufacturing operations . To
meet the rising demand for product variety, the geometry of
product is getting more complex and the multi-axis machine has
to be used accordingly. Therefore,the design of fixtures have
to revised for the parts to be used on multi-axis machines .
During the multi-axis manufacturing processes, the relative
motions between the cutting tool and the work table cause the
changing direction of cutting forces. To secure the part
against the varying cutting forces, the vertical clamping is
necessary. Because of the geometry of workparts contains
curves and surfaces, the clamping locations have to be revised,
too. In this research, a software system has developed to
design the fixture configuration of a multi-axis machine. The
V-block locating principle is used to determine the horizontal
locating and clamping devices. A CAD/CAM package is used for
the drawing and the assemly of the fixture together with the
workpart, and finally the simulation module is used to check
the collision between the cutting tool and fixturing components.