基于ANSYS的供球機構擺動軸靜動態特性分析

劉勁松,姜文慶,王　鶴

(1.上海理工大學 機械工程學院,上海　200093;2.上海微松工業自動化有限公司,上海　201114)

基于ANSYS的供球機構擺動軸靜動態特性分析

劉勁松1,2,姜文慶1,王鶴2

(1.上海理工大學 機械工程學院,上海200093;2.上海微松工業自動化有限公司,上海201114)

摘要供球機構擺動軸的靜動態特性對穩定供球、提高供球成功率和提高植球良率有著重要意義。因此,有必要對擺動軸靜動態特性進行仿真分析。通過建立簡化的擺動軸力學模型,并應用有限元分析軟件ANSYS對擺動軸擺動角0°中間位置和±45° QUOTE 極限位置進行了靜態分析,得到了擺動軸在這些位置的應力、變形云圖。對擺動軸進行模態分析,得到了擺動軸前6階固有頻率以及振形。分析結果表明,擺動軸的初步設計符合設計要求,同時判斷出擺動角±45° QUOTE 位置是擺動軸危險位置,為植球機供球機構的下一步設計與優化提供了參考。

關鍵詞供球機構;擺動軸;靜態特性;動態特性

Static and Dynamic Characteristics of the Swing Shaft ofBall Feeding Mechanism of Ball Mounter

LIU Jinsong1,2,JIANG Wenqing1,WANG He

(1.School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;

2.Shanghai Pine Industrial Automation Ltd.,Shanghai 201114,China)

AbstractThe static and dynamic characteristics of the swing shaft of ball feeding mechanism is of great significance in the ball feeding stability,the success rate for ball feeding and ball mounting.Therefore,it is necessary to conduct the static and dynamic characteristics of the swing shaft simulation analysis.A simplified swing shaft mechanical model is established and the finite element analysis software ANSYS is used for a static analysis of swing axle swing angle of 0° intermediate position and ±45° limit position to obtain the stress and deformation nephogram of the shaft wobble at these positions.The modal analysis of the swing shaft is carried out,and the natural frequency and the vibration form of the first six natural frequencies are obtained.The results show that the preliminary design of the swing shaft meets the design requirements and that the swing angle±45° position is the dangerous position.It provides references for the subsequent design and optimization of the ball mechanism.

Keywordsball feeding mechanism;the swing shaft;static characteristics;dynamic characteristics

植球機是半導體封裝技術的關鍵設備之一,主要由印刷系統、植球系統、檢查系統、上料系統和下料系統組成[1]。植球系統主要完成均勻、準確地將焊錫球放置于精密模板的動作,為下一步的錫球拾取做好準備。供球機構是植球系統的核心部件,其焊錫球的供給、焊錫球的放置和多余焊錫球的回池3大主要動作全部需要借助擺動軸的周期性擺動來完成。由于植球機使用的焊錫球的球徑較小、質量很輕,所以對擺動軸靜動態性能要求高[2]。文獻[3]研究了供球機構在兩種不同加減速控制方式下運動學特性,但沒有對靜剛度、頻率、振形這些對供球機構靜動態特性有直接影響的因素進行分析,且沒有相關文獻對供球機構的這些因素進行分析研究。……