斜軋擴管機孔型開度的研究分析

Analysis of Pass Opening of Rotary Expanding Pipe Mill

摘要: 斜軋擴管機的空間結(jié)構(gòu)不同于傳統(tǒng)的斜軋管機。為了更好地掌握斜軋擴管機生產(chǎn)過程中母管沿變形區(qū)的尺寸變化規(guī)律,必須對軋輥輥面到軋制線的距離,特別是輥面到軋制線的最短距離即孔型開度值進行求解。依據(jù)斜軋擴管機特殊的空間坐標關(guān)系,利用平截面法求解斜軋擴管機軋輥輥面到軋制線的孔型開度值,并據(jù)此提出配套頂頭的相關(guān)尺寸設(shè)計計算模型。

Abstract: The space structure of the rotary expanding pipe mill is different from conventional rotary pipe mills.To get a better understanding of the regularity of the mother tube's dimensional variation along the deformation zone during the rolling process of the rotary expander, it is required to calculate the distance between the roll surface and the rolling centerline, particularly the minimum distance, i.e., the pass opening.Based on the special space coordinate relationship of the rotary expander, the pass opening between the mill roll surface and the rolling centerline is determined by means of the planar section method.As a result, the computation model is established for dimensional design of the mating plugs.