Study on three-dimensional ultrasonic-aided grinding force
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摘要: 三维超声辅助磨削力的研究一直是超声加工领域的空白,本研究首先以三维超声辅助平面磨削力为研究对象,从宏观力学角度进行分析,建立了三维超声辅助平面磨削力的数学模型,并分析在不同磨削参数下磨削力的变化情况,最后进行了试验验证。研究结果表明:在一定条件下,三维超声辅助平面磨削下的磨削力小于二维超声辅助平面磨削力,约下降20%;随砂轮转速的增大,磨削力下降,且当砂轮转速大于3000 r/min时,磨削力下降明显;随着进给速度与磨削深度的增加,磨削力增加明显;实验验证同模型分析一致。Abstract: Study on three-dimensional ultrasonic assisted grinding force has been an empty field in ultrasonic machining area.The three-dimensional ultrasonic assisted grinding force is analyzed by using the macro-mechanics theory,and its mathematics model is established.The grinding force variations at different grinding parameters are evaluated.Verification experiment is conducted.It is found that under certain conditions,the three-dimensional ultrasonic assisted grinding force is almost 20% less than that of two-dimensional ultrasonic assisted grinding.The results also show that the grinding force decreases with the increase of wheel speed,and decreases significantly when wheel speed is more than 3000 r/min,while it increases with the increase of working feed speed and grinding depth,which has good compatibility with the theoretic analysis.
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Key words:
- grinding force /
- ultrasonic-aided grinding /
- ceramics /
- three-dimensional ultrasound
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