基于GSK928MA数控系统的普通立式铣床改造     

张恒  石世宏 《科技风》2012,(2):152-153

普通机床经过数控化改造,可以提高加工效率和节约生产成本.笔者以X5032普通铣床为例,提出了采用广州数控GSK928MA数控系统对该机床进行数控改造的方案.通过介绍改造过程中的关键环节——伺服系统设计和主轴电气控制方法,分析了GSK928MA数控系统的特点,并阐述了电机选型与接口设计  相似文献   

创造教育渗透于专业教学过程的探索与实践   总被引：1，自引：0，他引：1  

傅戈雁  石世宏  李岚  陈艾华 《大学教育科学》2004,(4):51-53

认为创造教育与专业教学应该相互渗透,相互促进。针对工科专业特点,提出创造教育渗透于专业教学过程的模式,并在各教学环节中采取多种创新的教学手段予以贯彻实施。  相似文献   

Deformation and Failure of Laser Coat under Impact Loadswith Multishocks     

石世宏傅戈雁  郑启光 《上海大学学报(英文版)》2004,8(A02):172-179

In applying impact loads with multishocks to perform shock experiments for laser cladded cobalt-base and nickel-base alloy coats on the surface of mild carbon steel or austenitic stainless steel, it is found that, under an impact force that is 11%-43% of the static yield limit of the material, micro-plastic deformation is generated both in the coat and upper part of the base. Repeated trials will cause cumulated macro-plastic deformation. After a total of 250,000 impacts, relative deformation rates of 2.2% and 8.9% result in the coat and base, respectively. Moreover, there is a rigidification phenomenon both in the coat and upper part of the base. When the coat covers the entire base, under impact loads with multishocks, the final stress is less than that when the base is only partly covered, and the life is longer.There is intense deformative rigidification and material floating effect on the lower part of the edge of the covering coat. Meanwhile, cracks are likely to occur and spread in this part.  相似文献   

基于UG的第三角投影法研究     

石皋莲  石世宏  吴少华 《现代企业教育》2009,(4):89-91

基于UG制图中主模型方法,通过建模应用、装配应用、制图应用模块,快速创建3D部件的2D图,研究第三角投影法投影原理、画图与看图的基本方法。通过体模型与制图中视图的双向关联,以及第一角视图与第三角视图生成法、投影规律的比较,探讨现场读图时第三角投影图和第一角投影图的快速转换技巧。  相似文献   

关于创新人才培养的几点思考     

石世宏  张志红  傅戈雁  李岚 《大学教育科学》2002,(4):1-3

针对我国传统的教育模式以及现有的创新教育中的一些普遍观点 ,提出了关于创新人才培养的几点新见解。结合作者的教改实践 ,在课程体系改革、建立新型的师生关系以及新型的人才评价系统几方面阐述了自己的看法。特别针对现有的“串行”教学模式和“宝塔”形的知识构架 ,提出了所谓“并行”教学模式和“刀刃”形知识构成模型。  相似文献   

激光涂层在多冲碰撞载荷下的变形与失效研究     

石世宏  傅戈雁  郑启光 《上海大学学报(英文版)》2004,8(Z1)

In applying impact loads with multishocks to perform shock experiments for laser cladded cobalt-base and nickel-base alloy coats on the surface of mild carbon steel or austenitic stainless steel, it is found that, under an impact force that is 11%-43% of the static yield limit of the material, micro-plastic deformation is generated both in the coat and upper part of the base. Repeated trials will cause cumulated macro-plastic deformation. After a total of 250,000 impacts, relative deformation rates of 2.2% and 8.9% result in the coat and base, respectively. Moreover, there is a rigidification phenomenon both in the coat and upper part of the base. When the coat covers the entire base, under impact loads with multishocks, the final stress is less than that when the base is only partly covered, and the life is longer.There is intense deformative rigidification and material floating effect on the lower part of the edge of the covering coat. Meanwhile, cracks are likely to occur and spread in this part.  相似文献   

车床精密主轴径向回转误差的仿真     

荆瑞红  石世宏 《内江科技》2007,28(11):127-127,165

基于车床精密主轴回转误差的数学模型,利用VC 中的CDC模块实现了在加工过程中车床精密主轴受回转误差影响,对影响回转误差参数的设置,实现径向加工轮廓轨迹的仿真。  相似文献