机械式低频轴向振动钻削装置的设计与分析

Design and analysis of mechanical drilling device with low frequency axial vibration

在深孔的钻削加工过程中,经常会有连续的带状切屑导致断钻事故发生,如果在钻削过程中对切屑进行周期性地断屑,就能有效解决深孔加工过程中断屑排屑困难的问题。设计一种机械式低频轴向振动钻削装置,研究其工作原理、振幅和频率的调整方法以及振动钻削装置的整体结构布局;对振动钻削装置的主要技术参数进行分析计算;利用ANSYS Workbench对其进行刚体动力学仿真分析,并进行振动钻削装置的振动特性试验。结果表明,所设计的钻削装置结构简单,振幅与频率调整方便,能够解决断屑排屑困难的问题,可以有效提高深孔加工质量。

In the drilling process of the deep hole,continuous strip-shaped chips are frequently produced to cause broken drill accidents,while if the chips are periodically broken during the drilling process,the problem of the chip removing in the deep hole machining process will be solved. A mechanical drilling device with low frequency axial vibration was designed. The working principle,the adjustment method of amplitude and frequency,and the whole structure layout of vibration drilling device were studied. The main technical parameters of vibration drilling device were analyzed and calculated. The dynamics simulation of rigid body was carried out by ANSYS Workbench,and the vibration characteristic tests of vibration drilling device were carried out. The results showed that the designed device had simple structure,the adjustment of amplitude and frequency was convenient,and the problems of chip breaking and chip removal could be solved to improve the processing quality of deep hole machining.