一種可變角度的薄壁鋼管矯直支撐塊的設計
Design of Angle-changeble Supporting Block for Straightening of Light-wall Steel Tubes
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摘要: 為滿足對薄壁高精度冷拔鋼管的矯直精度要求,新設計出一種可以變化角度的矯直支撐塊,該支撐塊將傳統(tǒng)的與鋼管的平面接觸改變?yōu)閳A弧面接觸,并可隨矯直機壓頭壓下量的不同,任意改變其與鋼管接觸面的角度。這種設計可使鋼管在矯直過程中,與矯直支撐塊的接觸面積大大增加,從而有效避免因應力過度集中而造成的鋼管變形。實踐證明,采用此新型矯直支撐塊可使鋼管的矯直合格率由60%左右提高到90%以上,經(jīng)濟效益和生產(chǎn)效率都得到了明顯提高。Abstract: To meet the requirement for the straightening accuracy of hi-precision light-wall steel tubes,an angle-changeble supporting-block is newly developed.With a new design,contact type of the supporting-block with the tube is changed from the conventional plane-contact into an arc surface-contact,and the angle of the contact surface with the tube can also be changed freely.Thanks to the said design,during the straightening process,the contact surface between the tube and the supporting-block is remarkably increased so as to effectively prevent possible deformation of the tube due to excessive stress concentration.Relevant operation practice shows that with the new type supporting-block,the straightening qualification rate can be enhanced from the original approxi.60% to over 90%,which would get both the economic benefit and the productivity increased obviously.
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