摩托车发动机托架级进模设计.pdf

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摩托车发动机托架级进模设计
武晓红
江门职业技术学院机电技术系(广东江门529000
摘要】摩托车发动机支架是典型的复合弯曲件,孔系的位置精度要求高。原厂采用单工序
模生产,采用先弯曲后冲孔的エ艺,一次将位置精度要求高的孔冲出来。采用单工序模生
产,虽然孔的位置精度有保证,但生产效率低。笔者分析了该制件米用级进模生产的难点,
提出了相应的对策。采用切断、弯曲和侧冲孔复合エ步,解决工件在工步间的传递问题。
浮动凹模采用滚柱和弹簧联合支承,有效地解决了工件成形时浮动凹模支承力不足的问
题,保证了工件先成形后侧冲孔的冲压顺序。改善前,发动机托架生产需用3副模具。改善
后只需用1套级进模生产,生产效率提高了3倍,制件精度符合要求,生产质量稳定。
关键词:发动机托架;复合弯曲件;級进模;复合工步
中图分类号:TC385.2
文献标识码:B
Design of Progressive Die for Motorcycle Engine Bracket
[Abstract] The motorcycle engine bracket is a typical composite bending part, and the position
precision of the hole is high. The original factory uses a single process mode production, the use
of the first bending punching process, once the position accuracy requirements of Kong Chong
out. Single operation mode is used, although the position accuracy of the hole is guaranteed, but
the production efficiency is low. This paper analyzes the difficulties in the Produ
using progressive die, and puts forward the corresponding countermeasures Using cutting, bending
and side punching composite work steps, to solve the problem in the work of the workpiece. Floating
concave mould adopts a roller and a spring joint bearing, effectively solve the workpiece forming
floating die supporting force insufficient problem. Using this structure to ensure that the
sequence of the workpiece is the first bending forming, and then from the side piercing. 3 sets of
molds for the production of engine bracket before the improvement of the mould
Improvement, only 1 sets of progressive die production. Improve the production efficiency by
times, the accuracy of the parts is in line with the requirements of the production quality
Key words: engine bracket; composite bending parts; progressive die; composite work step
1引言
生产批量较大。该制件是典型的复合弯曲件,原厂采
图1所示制件是摩托车发动机托架,属于通用件,用3副模具冲压,生产效率低,生产周期长。为了解决
为提高凸、凹模等工作零件间的导向精度和抵消
参考文献
部分因局部弯曲成形时可能产生的侧向力,在上下模リ]许发樾模具标准应用手册M北京:机械工业出版社,200
间设置了4根内导柱、导套(分别为件28、29、30)。
2]姜伯军.级进冲模设计与模具结构实例M.北京:机械工
本模具模架选用4根导柱滑动导向钢结构模架。
业出版社,2008.
冲裁废料向模座下排出,最后从载体上分离出来
作者简介:姜伯军,男,1947年生,从事模具设计生
的制件则留在巴模平面上由设置在模具外的压缩空产管理工作
气吹离模具,一側的载体废料亦同时被切人凹模。
(收稿日期:2016-02-28)i
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《模具制造》2016年第4期