基于Solid Edge和Mastercam的圆柱体零件的CAD／CAM集成技术研究

介绍了三维CAD软件Solid Edge环境下圆柱体零件的三维建模、CAD模型如何转换为独立的CAM系统Mastercam中的数据格式、数控加工自动编程以及加工仿真的技术。以链条箱输出轴为例,有效地实现了CAD／CAM技术的集成。     

数控电火花线切割机床加工编程浅析

八钢数控电火花线切割机床加工,是用计算机进行自动编程.现在比较常用的CAD/CAM软件有CAXA、Autop、Mastercam、Pro/e、UG、YH等,八钢股份公司维护中心线切割机床自动编程软件, 使用北京某公司自主开发的CAXA线切割软件.切割机床利用工具电极(钼丝)和工件两极之间脉冲放电时产生的电腐蚀现象对工件进行尺寸加工.     

矫直辊 CAD/CAM 系统和 BGCAD 图形处理系统通过冶金部鉴定

1987年7月12～14日冶金部在宝钢组织了“矫直辊CAD/CAM 系统一和“BGCAD 图形系统”两项成果鉴定会。“矫直辊CAD/CAM 系统”是专为解决宝钢钢管厂矫直辊的修复、加工而研制的微机CAD/CAM 系统。系统根据矫直辊辊面曲线的生成理论,用计算机辅助设计(CAD)和计算机辅助制造(CAM),将辊面曲线的设计和数控编程综合在一起,实现了从设计到加工的一体化。系统具有辊型曲线设计,数控编程,斜轧角计算、加工仿真和自动绘图等功能。系统提供的斜轧角调整表和调整曲线对现场有指导意义,可缩短实际调整时间,保证矫直质量,与会     

从CAD/CAM走向CIM

CAD/CAM装置能使全套零部件制造更容易、更精确,并能控制设计绘图和缩短工程周期时间。本文介绍的这家公司,应用该装置正向着实现计算机综合制造迈进。 (CAD——计算机辅助设计;CAM——计算机辅助制造;CIM——计算机综合制造)     

铝挤压模具技术的最新研究成果及评述（3）

3 挤压模具的CAD/CAM技术开发3.1 国外的发展现状与主要成果水平分析六十年代末,为了加速设计过程,出现了挤压工模具的CAD系统,到七十年代,许多新机床已能完全由计算机纸带控制了.铣床、钻床、镗床、车床、电加工机床以及挤压机采用数控(NC)和计算机数控(CNC)技术,大大提高了产品的产量及其精度.根据坯料形状、尺寸、合金成分等,预定出挤压速度、挤压温度、出料和换模周期等,使挤压机实现程序化控制.为此,需要非常复杂的计算机软件和硬件,并且用它们来完成工模具的设计和制造,     

CAD/CAM在冶金生产中的应用

由四级计算机组成的计算机集成制造系统(CIMS)实现了CAD、CAM和CAP。系统也有与之相适应的CAPM。借助于计算机系统和工艺、设备的综合能力,也是在CAD/CAM的基础上,实现了FMS,这使得在大生产过程中能充分满足每个用户的订货要求。系统的MRPⅡ对前工序的原料供应以justintime的原则进行了规划。本系统还在向更高层次的CIMS发展。     

热轧型钢轧辊孔型样板的CAD/CAM一体化系统

论述了轧辊孔型CAD/CAM一体化系统的意义并给出了系统的设计思想和体系结构图。分析了在穿孔机与计算机之间引入硬件接口,在3B或4B语言与CARD系统之间引入软件接口的关键技术。详细地介绍了轧辊孔型样板CAD/CAM一体化系统的实现技术。     

苏钢设计室的CAD应用

当前用计算机进行辅助设计和制造已成为发达工业国家的最现代化的管理技术之一。这项技术在国外称之为Computer Aided Design和Computer Aided Manufacturing(即CAD和CAM),并且在六十年代中期至七十年代中期是CAD、CAM发展最快的十年。在我国,从八十年代起也逐步地在各行业进行消化吸收、应用,在某些方面也已达到了国际先进水平。苏钢设计室引入计算机辅助设计技术也是当代技术潮流的趋势。作为一个     

铝型材挤压模具CAD/CAM系统设计方法探讨

本文根据铝型材挤压模具CAD／CAM系统的总体设计要求分析了模具CAD／CAM系统开发方法与系统开发平台，并对模具CAD数据传递的方法和模具CAM方法做了具体说明。     

铝型材挤压模具的CAD/CAM系统

论述了铝型材挤压模具CAD／CAM系统的特点，介绍了CAD／CAM系统的发展与应用现状；提出了CAD／CAM一体化系统导示图。在分析了铝型材挤压时的应力－应变场、温度场和温度－速度变化规律的基础上，提出了建立挤压工艺过程数学模型的基本设想。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

China's Major Non-ferrous Metals Imports & Exports

正~~     

Zinc Production by Province in 2014

正~~     

80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.