电伺服数控转塔冲床的PMC轴应用

对MT-200型电伺服数控转塔冲床的伺服主传动结构形式进行了简述,详细说明如何应用FANUC 18i数控系统的PMC轴控制功能,编制PMC程序,处理相关信号,实现A轴冲压功能。     

PLC技术在200t冲压机控制系统改造中的应用

随着工业自动化的高速发展,PLC的应用越来越广泛、功能也越来越强大,以继电器为控制核心的许多机械设备,都将被以PLC为控制核心的设备所取代。基于此,阐述了广州某公司200t冲压设备由原来的继电器控制系统,改造成三菱PLC控制系统的方案与方法,以供参考。     

U 型缺口小冲杆试验评价材料的各向异性

利用开U型缺口小冲杆试样对各向异性材料的轴向、周向和径向三个方向进行了不同温度试验研究,通过小冲杆能量随温度的变化,确定出小冲杆试验的转变温度TSP。结果表明,开U型直线槽小冲杆试验可以表征各向异性材料不同方向的韧脆转变温度及上平台冲击功之间的区别。结合常规小冲杆试验（不开缺口）,得到开U型缺口的小冲杆试验能够更有效地应用于评价各向异性材料的力学性能。     

基于PDCA理论的模具制造车间质量管理

为了延长凸模的使用寿命,运用全面质量管理的PDCA循环法,针对凸模质量失效问题进行了分析,并以T型冲头为例,对冲头加工的热处理工艺和机加工工艺进行改进,提高了冲头产品的硬度、韧性和耐磨性,最后以应用实例证明了应用PDCA法对冲模进行质量管理能够为企业取得良好的经济效益。     

Mathematical model of interaction between the localization system of an underground pneumatic drift punch and a long pipeline

The paper illustrates the influence exerted by underground pipelines on the efficiency of localization system of a pneumatic drift punch. The authors offer an assessment method for the receiver input power by friendly signal refection from an infinite conductive pipeline. The FEM modeling is performed for a directivity pattern of IP4603 pneumodrift punch and a parallel located pipe with the set diameter in the horizontal working plane of the punch. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 25–30, May–June, 2009.     

结合针刺布生产工艺探讨针刺机针板布针问题

结合生产工艺 ,阐述针刺布生产线的针板配置 ,介绍两种全新的电脑布针方法。     

Composite gas cylinders – Probabilistic analysis of minimum load cycle requirements

Gas cylinders made of composite materials receive growing popularity in light-weight applications. Current standards are mostly based on safety determination relying on minimum amounts of endured load cycles and a minimum burst pressure of a small number of specimens. This paper investigates the possibilities of a probabilistic strength assessment for safety improvements as well as cost and weight savings. The probabilistic assessment is based on destructive testing of small sized samples. The influence of sample size on uncertainty of the assessment is analysed. Furthermore, methods for the assessment of in-service ageing (degradation) are discussed and displayed in performance charts.     

漏盘成形冲孔复合模设计及改进

通过对漏盘成形冲孔复合模工作过程的分析。找出了小凸模折断的原因，由此改进了模具结构．通过对小凸模采用全行程导向保护。改善了小凸模的工作条件，保证了模具的正常使用。     

双重正间隙冲裁构想与试验研究

为提高普通冲裁件断面中剪切面高度,在总结现有各种冲压分离工艺方法的基础上,提出了一种新的厚板冲裁构想,其模具结构设计为:阶梯型冲头或阶梯形凹模,且为双重正间隙.制作了原理性试验模,用材料厚度为4 mm和6 mm的纯铝板和黄铜板,分别在两台压力机上进行了冲裁试验,并与普通冲裁作比较验证.获得了冲裁件断面之剪切面高度由普通冲裁为料厚的1/3以下,提高到1/2以上的效果.并评价了该工艺及模具在生产实际中的可行性与经济性.