模具技术
模具技術
모구기술
DIE AND MOULD TECHNOLOGY
2014年
4期
31-34
,共4页
厚板料%大曲率%U 型横梁%弯曲%开裂
厚闆料%大麯率%U 型橫樑%彎麯%開裂
후판료%대곡솔%U 형횡량%만곡%개렬
thick sheet%large curvature%U-shaped beam%bending%crack
介绍了大曲率 U 型横梁弯曲成形模具结构及其工作原理。针对厚板料大曲率 U 型横梁在弯曲成形时，由于内凹侧缺少流入材料补充、材料强度高和厚度大等原因而导致横梁在成形时内凹侧出现开裂问题。通过改变弯曲模内凹侧凹模镶块的形状、间隙、圆角半径以及表面粗糙度等方法，改善了横梁内凹侧凹模镶块的触料状态，使横梁内凹侧在成形时得到了一定的流入材料补充，从而解决了厚板料大曲率 U型横梁在弯曲成形时的开裂问题。结果表明，实际生产应用效果良好。
介紹瞭大麯率 U 型橫樑彎麯成形模具結構及其工作原理。針對厚闆料大麯率 U 型橫樑在彎麯成形時，由于內凹側缺少流入材料補充、材料彊度高和厚度大等原因而導緻橫樑在成形時內凹側齣現開裂問題。通過改變彎麯模內凹側凹模鑲塊的形狀、間隙、圓角半徑以及錶麵粗糙度等方法，改善瞭橫樑內凹側凹模鑲塊的觸料狀態，使橫樑內凹側在成形時得到瞭一定的流入材料補充，從而解決瞭厚闆料大麯率 U型橫樑在彎麯成形時的開裂問題。結果錶明，實際生產應用效果良好。
개소료대곡솔 U 형횡량만곡성형모구결구급기공작원리。침대후판료대곡솔 U 형횡량재만곡성형시，유우내요측결소류입재료보충、재료강도고화후도대등원인이도치횡량재성형시내요측출현개렬문제。통과개변만곡모내요측요모양괴적형상、간극、원각반경이급표면조조도등방법，개선료횡량내요측요모양괴적촉료상태，사횡량내요측재성형시득도료일정적류입재료보충，종이해결료후판료대곡솔 U형횡량재만곡성형시적개렬문제。결과표명，실제생산응용효과량호。
The bending die structure and its working principle for thick wall U-shaped beam with large curvature are introduced in this paper.During the bending process,cracks often exist on the concave side of the U-shaped beam due to the the lack of supplementary material. Moreover,the high strength and large thickness of the sheet metal also lead to the crack problem.Using the optimization for the shape,clearance,fillet radius and surface rough-ness of the insert on the concave die,the material can be supplemented effectively in the concave side of the beam during the bending process.It proves that this die structure can solve the crack problem and satisfy the demands in producing.
