加工鈦醫療部件

5 軸和 3 軸銑削的比較

銑削可獲得良好的曲面近似面. 使用球頭刀具進行三軸銑削時, x 方向的線性進給運動, y, 和z方向可以確保刀具切削到工件上的任意座標點, 但刀軸方向不能改變. 刀軸上該點的實際切削速度為零, 而且刀具中心的容屑空間也很小. 如果這些點涉及到切割, 不利的切削條件會導致加工表面品質下降, 刀片磨損會增加, 且加工時間會延長. 使高級刀具材料沒有充分利用.

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5-不銹鋼軸銑

短刀具五軸銑削技術

為了克服缺點 3+2 軸加工, 五軸聯動加工可能是更好的選擇, 更何況有些五軸工具機還具有一些專為模具產業設計的功能. 五軸聯動加工,可協調三個直線軸和兩個旋轉軸,使其同時運動, 它解決了3軸和3軸的所有問題 3+2 軸加工. 該工具可以很短, 沒有觀點重疊, 丟失加工區域的可能性較小, 並且可以連續處理,無需額外的進出口 (見圖 3).

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5 axis milling of turbine impeller

5 axis milling machining of turbine impeller

Before adopting 5-axis CNC machining centers, most turbomachinery manufacturers used 3-axis or 4-axis machine tools to process impellers, and most of them used point machining. 那是, every point on the blade surface is processed into a point by the tool tip. When the tool moves along the surface of the blade, it will leave some pits or residual sharp corners, and the height of these pits or sharp corners depends on the programming skills. Point processing is also a feasible method, but this method has some unavoidable disadvantages:

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Difficulties in CNC machining of large impeller blades

Difficulties in milling large blades of impellers

In the CNC machining of the impeller blades, the machining of large impeller blades is the most difficult. Mastering the measures to solve the processing difficulties of large blades has a very positive effect not only on the large blade itself, but also on the impeller moving blades, impeller stationary blades, guide impeller blades and impeller end blades.

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