CAJ | 학술논문

在分析现有压边装置应用现状的基础上,提出了一种能够提供随法兰位置变化的新型变压边力装置.利用非线性电位器模拟理想变压边力曲线,更符合拉深过程中的压边力要求.利用电液伺服阀良好的快速响应性,可以调整拉深气垫作用在板料上的压边力大小.采用随动装置使电位器输出电压随法兰行程的变化而变化.实践表明,该装置可提高板料的可成形性、材料利用率,减少不良缺陷的发生.
재분석현유압변장치응용현상적기출상,제출료일충능구제공수법란위치변화적신형변압변력장치.이용비선성전위기모의이상변압변력곡선,경부합랍심과정중적압변력요구.이용전액사복벌량호적쾌속향응성,가이조정랍심기점작용재판료상적압변력대소.채용수동장치사전위기수출전압수법란행정적변화이변화.실천표명,해장치가제고판료적가성형성、재료이용솔,감소불량결함적발생.
Based on the analysis of application status of blank holding equipment, a new device with variable blank holding force was proposed, the characteristic of which was that the blank holding force (BHF) varied with the flange location at the same time. Simulating ideal BHF curve with nonlinear potentiometer met the demands of blank holding force. To adjust effectively BHF on sheet metal exerted by air-cushion, electro-hydraulic servo valve with the fast response characteristics was used. Output voltage of nonlinear potentiometer varied with the flange stroke by servo device. Results show that the device can improve the formability and the utilization efficiency of sheet metal and avoid various defects.