The utility model belongs to the technical field of plastic forming and relates to a hot drawing forming tool for titanium alloy sheet. The device comprises a base plate, a tripod, a clamp, a main shaft, a three section spacer sleeve, a buckle and a stretching half die; the tripod is arranged symmetrically on both sides of the base plate, the horizontal right angle edge is connected with the base plate thread, and the vertical right angle edge is installed with the main shaft; the middle part of the vertical right angle edge is fixedly connected with the three section spacer sleeves; the buckle can rotate around the main shaft; the two ends of the clamp are connected with the padeye bolts of the buckle; the end of the plate material is connected The head is clamped in the clamp; the lower end of the drawing half die is a hyperbolic punch, which moves downward close to the sheet metal to realize the hot drawing forming of the sheet metal. The utility model belongs to semi die forming, the number of forming dies is reduced by half, and the clamp has universality; the forming accuracy is improved, the rebound amount is reduced, and the thinning amount is controlled; the tedious processes such as heat treatment are omitted, the control link is simplified, the waste of energy and materials is reduced, the development cycle is shortened, and the quality stability of the product is improved.
【技术实现步骤摘要】
一种钛合金板材热拉伸成形工装
本技术属于塑性成形加工
,涉及一种钛合金板材热拉伸成形工装。
技术介绍
钛合金对于减轻飞机整体结构重量、提高结构设计效率、改善结构可靠性、提高机体寿命、满足高温和高载以及腐蚀环境要求等方面能够发挥重要作用。钛合金在冷状态成形困难,多采用等温热成形和超塑成形工艺,但对于如图1所示的形状复杂的双曲度的钛合金蒙皮零件,在成形时存在的问题包括:(1)若采用等温热成形,即为热状态下的冲压或拉深,皆为刚性模具成形,材料受力流动不均匀,产生无法排除的褶皱或者破裂的风险。(2)采用分段热成形再焊接的方法,成形工装数量多、分段的零件分别进行热成形工序,造成能源和材料浪费;单个零件成形后进行多道曲线焊接工序,焊接工装数量多,边缘焊缝需要精准打磨处理,并需要X光检验保证曲面焊缝的质量;再装夹在热处理工装中进行热处理去除焊接内应力。整个加工周期长,质量稳定性不易控制,成本高。(3)采用超塑成形又会造成局部减薄率过高的现象。超塑成形具有自身优势,但减薄率的控制仍然是技术难点。 ...
【技术保护点】
1.一种钛合金板材热拉伸成形工装,其特征在于,所述的钛合金板材热拉伸成形工装包括底板(1)、三角架(2)、夹钳(3)、主轴(4)、三段隔套(5)、卡扣(6)和拉伸半模(8);/n所述三角架(2)为直角三角形形状,共八个,中部镂空,对称排布于底板(1)两侧,同一侧的三角架(2)均匀间隔排布,三角架(2)的水平直角边与底板(1)螺纹连接,三角架(2)的竖直直角边上端设有圆孔,主轴(4)依次穿过圆孔,实现三角架(2)顶端的固定;三角架(2)的竖直直角边中部设有通孔,三段隔套(5)依次穿过通孔,实现固定连接,保证每侧三角架(2)的间隙和平行度;/n所述卡扣(6)由两卡块构成,卡块上 ...
【技术特征摘要】
1.一种钛合金板材热拉伸成形工装,其特征在于,所述的钛合金板材热拉伸成形工装包括底板(1)、三角架(2)、夹钳(3)、主轴(4)、三段隔套(5)、卡扣(6)和拉伸半模(8);
所述三角架(2)为直角三角形形状,共八个,中部镂空,对称排布于底板(1)两侧,同一侧的三角架(2)均匀间隔排布,三角架(2)的水平直角边与底板(1)螺纹连接,三角架(2)的竖直直角边上端设有圆孔,主轴(4)依次穿过圆孔,实现三角架(2)顶端的固定;三角架(2)的竖直直角边中部设有通孔,三段隔套(5)依次穿过通孔,实现固定连接,保证每侧三角架(2)的间隙和平行度;
所述卡扣(6)由两卡块构...
【专利技术属性】
技术研发人员:朱丽,迟彩楼,王月林,
申请(专利权)人:沈阳飞机工业集团有限公司,
类型:新型
国别省市:辽宁;21
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