摘要
在优化驱动的设计理念指导下对新型天平校准平台进行设计。在方案设计阶段,采用双移动龙门架配合固定加载端实现多点多轴向加载,选用伺服电动缸提供加载力,达到了力的精确控制;龙门架移动机构选用配合导轨滑块的齿轮齿条机构实现高精度运动。确定方案后对龙门架零部件进行拓扑优化,然后对龙门架和固定端两个装配体进行尺寸优化。优化结束后,主要加载工况的形变量减小了30. 6%,龙门架质量减小了6. 9%。最终此平台可实现多轴向、高精度力控制和坐标式加载;与现有的校准平台相比,大幅度减少了人工操作,提高了校准结果的可靠性。
The new balance calibration platform was designed under the guidance of the optimization driven design method.In the scheme design stage,the two movable gantry with the fixed loading end was chosen to achieve multi axial loading,the servo electric cylinder was chosen to achieve high precision force control.For gantry,gear rack with linear guide was used to achieve high precision movement.After the scheme was determined,the topology optimization was applied to the parts of the gantry,and then the dimensions of the two parts of the gantry and fixed ends were optimized.After optimization,the deformation of the main loading condition was reduced by 30.6%,and the weight of the gantry was reduced by 6.9%.Finally the platform can achieve multi axis,high precision force control and coordinate loading.Compared with the existing calibration platform,manual operation is reduced and the reliability of the calibration results is improved.
作者
周杰
高宏力
王奉晨
ZHOU Jie;GAO Hongli;WANG Fengcheng(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu Sichuan 610031,China)
出处
《机床与液压》
北大核心
2018年第19期79-83,共5页
Machine Tool & Hydraulics
关键词
天平校准
优化驱动
拓扑优化
尺寸优化
Balance calibration
Optimization driven
Topology optimization
Size optimization
