锻压技术

矿山机械皮带辊轮罩用08F钢冲裁间隙对断面影响的研究

英文标题：Study on influence of 08F steel blanking clearance on the section of mining machinery belt roller cover

作者：陈琛李晓威

关键词：冲裁落料冲裁间隙光亮带毛刺

分类号：TG386；TG76

出版年,卷(期):页码：2014,39(6):98-104

摘要：

冲裁加工中间隙值的选定尤为重要，间隙值选定的是否合理，对冲裁件断面毛刺高度、断面光亮带宽度、断面倾斜角度和冲裁件尺寸精度有着极其重要的影响。对南京唐亿精密机械公司的拉深产品08F钢板的下料间隙选定进行试验，通过固定凹模尺寸，改变凸模尺寸，获得了5组不同的间隙后进行冲裁。并分析了不同间隙下产品的尺寸精度、毛刺高度和光亮带宽度，找出间隙对产品断面质量的影响规律。实验结果表明，将间隙值从原来的0.15 mm（即板料厚度的6%）增加到0.3 mm（即板料厚度的12%）后进行冲裁，工件断口的毛刺高度降低，基本稳定在0.03～0.04 mm，光亮带比例适中，断面倾角小，产品尺寸稳定，降低了废品率，提高了模具寿命。

Designating of clearance value in punching is especially vital. The reasonableness of clearance value has an impact on the section burr height of blanking pieces, the width of the section bright belt, the section gradient and the dimension precision of blanking pieces. Combining with actual production, it aims to conduct a test on designating of blanking clearance value of deep drawing products 08F steel plate made by Nanjing Tang Yi Precision Machinery Manufacturing Co., Ltd.. Through fixing the die size to change the punch size, five groups lf different clearance were got and blanked. And then the dimension precision, the burr height and the bright band width of products with different clearance values were analyzed, and the influence law of clearance on product quality of section was found out. The test results show that the clearance value increases from 0.15 mm (6% of plate depth) to 0.3 mm(12% of plate depth), the burr height of workpiece fracture decreases greatly and stays 0.03-0.04 mm, the bright belt rate is moderate, the inclined angle of cross section is small, the product size is stable, the waster rate reduces, and the lifetime of die increases.

基金项目：

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