双头摩擦焊机测控系统的设计.doc
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- 摩擦 测控 系统 设计
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1、摘 要随着科学技术和社会经济的发展,工业技术的提高,对机械材料的加工要求也越来越高,而焊接是机械加工不可缺少的环节,摩擦焊机就是在这样的情况下产生的。双头摩擦焊机是利用工件端面相互摩擦产生的热量使之达哦到塑性状态,然后顶锻完成焊接的方法。因车削工件时切屑往往牢牢地粘在刀头上,轴与轴瓦之间润滑不良时也会产生局部焊合。国内最大的是400吨摩擦焊机,能够焊接截面积高达36000mm的超大型工件。目前国内焊接精度最高的是成品活塞杆摩擦焊机,用于液压缸活塞杆镀铬后进行摩擦焊接。国内最新的是双头车桥摩擦焊机,可以对车桥桥壳的两上接头同时进行摩擦焊接。国内大吨位惯性摩擦焊,应用最广泛的在石油钻杆焊接应用上,
2、如160吨惯性摩擦焊接钻杆,250吨焊接加重钻杆等,国内大吨位惯性摩擦焊技术已经日趋成熟。国内的大吨位惯性摩擦焊,在航天及军工领域也有广泛的应用前景。根据双头摩擦焊机焊接过程质量控制的需要,研究了一套高采样精度的双头摩擦焊机测控系统。系统在Visual C开发环境下编程,采用多媒体定时器控制采样精度,减小了由于Windows普通定时器定时精度差给系统造成的焊接缩短量和焊接时间等控制参数的测量误差。数据统计分析表明,系统采样精度高达1 ms,可保证两侧相对转速误差小于35 rmin、相对缩短量误差在0105 mm以内。该系统采用模块化设计结构,包括数据采集、串口通信、绘制趋势曲线、焊接数据实时显
3、示、动画演示焊接过程等功能模块。实际生产及试验表明,该测控系统控制精度高,运行高效、稳定。关键词:双头摩擦焊机;多媒体定时器;缩短量误差中图分类号TG4398文献标识码:A文章编号:10012303(2009)11005303 ABSTRACTAs science and technology and socio-economic development, industrial technology improved, the mechanical materials processing requirements are also increasing, while the welding
4、is the indispensable part machining, friction welding is in this case produced. Double friction welding is the use of friction between the workpiece and the end of the heat generated up to the plastic state, Oh, then complete the welding method of forging. When the chips are often a result of turnin
5、g the workpiece firmly stick to the cutter head, poor lubrication between the shaft and the bearing will also produce local welding. The largest is 400 tons of friction welding, weld cross-sectional area can be very large workpieces up to 36000mm.Currently the highest precision welding rod friction
6、welding is finished, chrome plated piston rod for hydraulic cylinders after friction welding. The latest is a domestic double axle friction welding, you can axle axle joints simultaneously on the two friction welding. Domestic large tonnage friction welding, the most widely used pipe welding applica
7、tions in the oil, such as 160 tons of inertia friction welding drill pipe, heavy weight drill pipe welding, etc. 250 tons, the domestic large-tonnage friction welding technology has matured.Domestic large tonnage friction welding in the aerospace and military fields have broad application prospects.
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