高速精密沖床動態不平衡力學模型探討與振動改善

Unbalance Dynamic Model Exploring and Vibration Improvement in a High-Speed Precision Punch

王海(Hai Wang) ； 陳治霈 ； Chih Pei Chen ； 張思緯

《中華民國振動與噪音工程學會論文集》 2015 (2015/06) Pp. 401-408

摘要

機械式曲柄沖床在運轉時，內部機構的質量因牛頓第二運動定律產生慣性力作用在機架上，造成機台的不平衡，引發沖床產生振動，在沖壓加工時更易造成機台的壽命縮短。以往解決沖床的動態不平衡的方式，常以增設滑塊四連桿組作為動平衡機構。本論文之研究目的在於分析高速精密沖床在運作過程中產生的振動，並改善其機台在運作過程中的振動，使得沖床的價值提升。首先對廠商提供之高速曲柄式精密沖床進行慣性力推導，以了解此沖床之運作過程之力量分部，然後利用滑塊的配重和桿件質心位置等參數做慣性例分析及比較。最後利用推導出的慣性力作為數值分析計算法之邊界條件。本論文則使用數值分析計算法來分析數值分析計算法可利用電腦軟體模擬，透過有限元素分析軟體、ANSYS Workbench等，本研究先以軟體繪出整個實體架構，針對機架部份，使用有限元素分析軟體ANSYSWorkbench作分析，並利用慣性力推導所推導出來的慣性力與側向推力作為邊界條件去分析，然而觀察其分析結果並和改良後之結構分析結果做比較，找出部份結構之改良方案，日後作設計改良時可作為參考依據。

關鍵字

ANSYS WORKBENCH高速精密沖床

並列摘要

Crank driving presses in operation, the quality of the internal mechanism of Newton's second law of motion due to the inertia force generated on the rack, resulting in an imbalance of the machine, causing vibration punch when punching machines are more likely to cause life shortening. The conventional way to solve the dynamic imbalance punch, often with the addition of the slider balancing mechanism as a four-bar linkage group. Study purpose of this paper is to analyze the vibration generated by high-speed precision punch in the course of, and improve the machine vibration in the course of such value to enhance the punch. High-speed precision punching of the first crank provides manufacturer inertia force is derived in order to understand the operation of the power division of the punch of the process, and then use the lever weight and center of mass and other parameters of the slider do inertia cases and compared. Finally, the inertia force is derived as boundary conditions of numerical analysis and calculation method. In this paper, using numerical analysis method to analyze the calculation method can be used to calculate the numerical analysis computer software simulation, analysis software, ANSYS Workbench and so on through the finite elements, the present study first to draw the entire physical infrastructure software for frame part, using finite element Analysis ANSYS Workbench software for analysis, and the use of the inertial forces derived inertial force and the lateral thrust as boundary conditions to analyze, but to observe and analyze the results and the improvement of structural analysis results after comparison, to identify the partial structure The improvement programs can be used as a reference for future design improvements.

並列關鍵字

ANSYS ； ANSYS workbench ； High-speed precision punch