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某些工程、矿山、冶金机械经常使用的大型转轴类零件,其结构一般是由一根固定轴(材料为无缝钢管)及焊接在其上的数块耳板组焊而成,耳板焊接在固定轴上之后,所有耳板相对应各孔之间均有一定同轴度要求,而此类零件由于具有尺寸较长、固定轴毛坯变形弯曲、焊接变形大、不易实现焊后加工等特点,若想采取焊前加工通过焊接保证耳板各孔同轴度要求,就必须采取合理的工艺流程及工艺参数才能确保此类零件的加工质量。通过对国外某型号工程机械一种典型转轴零件的加工思路及工艺流程的分析,详细介绍该类工件采取焊前加工工艺时主要零件的加工方法、工艺流程及组焊精度的控制方法。
Some engineering, mining, metallurgy machinery commonly used large shaft parts, the structure is generally composed of a fixed shaft (seamless steel pipe material) and welded to the number of pieces of lugs welded together, the ear plate welding After fixing the shaft, all the corresponding holes between the ears have a certain degree of concentricity requirements, and such parts due to the longer size, deformation of the fixed shaft blank bending, welding deformation, not easy to achieve after-welding processing and so on , If you want to take pre-welding through welding to ensure that the ear hole coaxial requirements, we must take reasonable process and process parameters to ensure the quality of such parts processing. Through the analysis of the processing idea and process flow of a typical shaft part of a certain type of construction machinery in foreign countries, the control methods of the processing methods, the process flow and the welding accuracy of the main parts of this kind of work pieces are introduced in detail.