CAJ | 학술논문

为了提高非圆车削稳定性,将变速加工引入非圆车削形成变速非圆车削.该文构建了变速非圆车削系统结构,建立了主轴变速定量描述的数学模型和特征参数,设计了适于变速非圆车削的直线伺服单元,研究了变速加工提高加工稳定性的机理.结果表明:在合适的主轴驱动激励函数和变速参数条件下,直线伺服单元能很好地跟踪刀具运动的目标值,从而有效地提高车削稳定性和加工精度.
위료제고비원차삭은정성,장변속가공인입비원차삭형성변속비원차삭.해문구건료변속비원차삭계통결구,건립료주축변속정량묘술적수학모형화특정삼수,설계료괄우변속비원차삭적직선사복단원,연구료변속가공제고가공은정성적궤리.결과표명:재합괄적주축구동격려함수화변속삼수조건하,직선사복단원능흔호지근종도구운동적목표치,종이유효지제고차삭은정성화가공정도.
To improve the stability of noncircular turning process, this paper attempts to develop a new machining method that combines noncircular turning with variable spindle speed machining and is thus called variable spindle speed noncircular turning process. First, the framework of the variable spindle speed noncircular turning system is built. Then, the mathematical model and characteristic parametersare established for quantitative description of spindle speed variation. Also, the linear servo unit available for variable speed noncircular turning process is designed. Finally, the mechanism of variable spindle speed machining's improvement on stability is investigated. The research results indicate that under the condition of suitable driving function and speed parameters of the spindle, the linear servo unit is able to track the desired trajectory of cutting tool motion, thus resulting in valid improvement on machining stability and precision.