齿圈压板精密冲裁件,对原材料的质量提出了很高的要求。在目前大力推广和普及精密无屑加工新工艺的过程中,需要深入研究各种钢材的精冲性能,以制定合适的质量标准,有利于合理选材与用料。一、精冲件难度的评定一种冲件可否精冲取决于它的几何形状、料厚和材料种类及其牌号,这三个要素确定了精冲件的难易程度。第一是精冲件的几何形状,可把它划分成很多在同一平面上的直线和曲线。一般曲线由齿形、圆孔、圆环、圆角、窄槽(带)等形状元素组成,每种形状元素又可按一定的数值划分成不等的级别,用它来确定精冲件的难易程度,称之为“难度”。难度分为三级:有S3级难度——复杂的精冲件;S2级难度——中等复杂的精冲件;S1级难度——简单的精冲件,第二是冲件用的料厚。随着冲件料厚加大,虽然复杂程度相同的精冲件但其难度相应加大。第三是材料种类及其牌号。基于上述三点,综合确定某个精冲件的精冲难度, Gear ring plate precision blanking pieces, the quality of raw materials put forward high requirements. In the current promotion and popularization of precision machining process without debris, the need for in-depth study of a variety of refined steel blanking performance, to develop appropriate quality standards, is conducive to the rational selection and materials. First, the assessment of the precision of fine blanking A fine blanking punch depends on its geometry, material thickness and material types and grades, these three elements to determine the ease of fine blanking. The first is the fine blanking geometry, which can be divided into many lines and curves in the same plane. The general curve by the tooth shape, round hole, ring, rounded, narrow slot (belt) and other shape elements, each shape element can be divided into a certain value of unequal rank, use it to determine the fine blanking parts Difficult degree, called “difficulty.” Difficulty is divided into three levels: There are S3-level difficulty - complex fine blanking; S2-level difficulty - moderately complex fine blanking; S1 level of difficulty - a simple fine blanking, the second is the thickness of the material used for blanking . As the punch material thickness increases, although the complexity of the same fine blanking but its corresponding increase in difficulty. The third is the type of material and its grade. Based on the above three points, a comprehensive determination of a precision blanking precision punching difficulty,