第一部分:信号特征和坯料硬度的影响一、前言随着高速冲床在冲压工业上的广泛应用,用于冲床操作时的安全可靠的实时监测系统变得日益重要,其最重要的理由乃是可藉以避免模具和机床的严重损坏,并及早发现异常操作条件而减少昂贵的停机时间和模具费用。送料错误、润滑失效、零件松动和废料堵塞等这些冲床 Part I: Signal Characteristics and Billet Hardness I. INTRODUCTION With the rapid adoption of high-speed punches in the stamping industry, a safe and reliable real-time monitoring system for punch presses is becoming more and more important. The most important reason is that To avoid serious damage to molds and machine tools, and to detect abnormal operating conditions early to reduce costly downtime and tooling costs. Feeding error, lubrication failure, parts loosening and waste clogging punch