Ball Bar Measurement Equivalent to Cone Frustum Cutting on Multi-axis Machine

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Other Title
  • 多軸工作機械での円錐台加工試験に対応したボールバー測定法 (第1報)
  • 多軸工作機械での円錐台加工試験に対応したボールバー測定法(第1報)主軸旋回形5軸MCでのボールバー測定と実加工との比較
  • タジク コウサク キカイ デ ノ エンスイダイ カコウ シケン ニ タイオウ シタ ボールバー ソクテイホウ ダイ1ポウ シュジク センカイケイ 5ジク MC デ ノ ボールバー ソクテイ ト ジツ カコウ ト ノ ヒカク
  • —Comparison of Ball Bar Measurement with Cutting Test on Spindle-tilt Type 5-axis MC—
  • ―主軸旋回形5軸MCでのボールバー測定と実加工との比較―

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Description

NAS 979 is a well-known standard for testing motion accuracy of multi-axis machine tools. One of the test methods of the standard is to cut a cone frustum and measure its accuracy. Although it has been established for long time, it is still used since a better method does not exist. Ball bar test seems to be a more convenient method for measuring the motion accuracy because NAS 979 needs two processes that include machining and measuring. In this study, validity of NAS 979 is estimated first. Next, the cutter path of cone frustum cutting substituted to NAS 979 on spindle-tilt type 5-axis MC is studied. Finally, a ball bar measurement method equivalent to cone frustum cutting test is proposed and executed on a real machine.

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