摘要
针对硬质合金可转位刀片的周边精密刃磨加工,基于有限元方法对刃磨夹具进行了结构静力学和动力学分析研究。研究在磨削力和夹紧力作用下夹具各个方向的变形情况。通过模态分析和谐响应分析,研究夹具的振动特性,获得夹具随激振力频率变化的幅频响应曲线,识别出产生共振的激振频率。根据分析结果找出了夹具设计的薄弱环节,进而提出了优化夹紧顶尖结构和材料方法,结果表明该方法可有效提高夹具的定位精度和磨削加工的可靠性。
Focusing on the precision manufacturing of peripheral edge of cemented carbide,statics analysis and dynamics analysis of the fixture are conducted based on the finite element method. The deformations of the fixture in all directions are studied under influence of the grinding force and the clamping force. Furthermore,modal analysis and harmonic response analysis were carried out to obtain dynamics of the fixture; the amplitude frequency response curve of fixture with variable excitation frequencies and resonate frequencies were also acquired. An effective optimization method is proposed to identify the weak part of the fixture based on the presented analysis,the positioning precision of the fixtures and the grinding reliability are also been enhanced.
出处
《制造技术与机床》
北大核心
2016年第8期159-163,共5页
Manufacturing Technology & Machine Tool
基金
福建省高校产学合作重大项目(2014H6025)
