三维自动进样系统的结构设计与运动学分析

 何德,何毅斌*,李晶

(武汉工程大学 机电工程学院,湖北 武汉 430074)
摘要:数字PCR设备三维自动取样系统是完成数字PCR检测仪设备核心结构。根据电子设备高精密度和紧促性要求,以丝杆步进电机与滑动导轨相结合的驱动设计方式能够有效提高机器工作精度、降低运动噪音。取样针采用双层结构设计,使设备能够有效实现无污染反复取样,并能够实现自动清洗。利用多刚体运动学理论,通过ADAMS软件完成三维运动系统的运动学仿真,结果证明了系统运行的精密性和可靠性,运动能满足要求。
关键词:数字PCR检测仪;自动进样;取样针;ADAMS
中图分类号:TP216 文献标志码:A doi:10.3969/j.issn.1006-0316.2018.03.011
文章编号:1006-0316 (2018) 03-0043-03
Structural Design and Kinematics Analysis of 3D Auto Sampling System
HE De,HE Yibin,LI Jing
( School of Mechanical and Electrical Engineering, Wuhan Institute of Technology, Wuhan 430074 , China )
Abstract:Digital PCR equipment, three-dimensional automatic sampling system is to complete the core structure of the PCR detector device, according to the high precision of electronic equipment and tightening requirements, to study the screw stepper motor and sliding guide combination of drive design, can effectively improve Machine work accuracy, reduce movement noise. Sampling needle with double-layer structure design, so that equipment can effectively achieve repeated pollution-free sampling, and can achieve automatic cleaning. The kinematic simulation of the three - dimensional motion system is completed by ADAMS software. The results show that the system is accurate and reliable, and the kinetic energy can meet the requirements.
Key words:digital PCR detector;auto sampling;sampling needle;ADAMS
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收稿日期:2017-06-12
作者简介:何德(1992-),男,湖北咸宁人,工学硕士,主要研究方向为生物分析仪器。*通讯作者:何毅斌(1966-),男,湖北武汉人,工学博士,教授,主要研究方向为机械设计仿真及轻量化。
 

 

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