摘要:
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在板料的无模渐进成形过程中,使用导正杆定位底支撑模型,由于配合误差和模型浮动等问题造成定位效率低、精度差。基于机器视觉的机床自寻位系统利用图像采集系统对定位孔进行图像捕捉与处理,获得底支撑模型的坐标系,然后在数控系统中对机床坐标系进行离线变换,实现成形轨迹位置到底支撑模型的自适应,完成了金属板料无模渐进成形中底支撑模型的非接触式高精度快速定位。
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In the sheet metal incremental forming,the orientation of bolster model positioned by guide pin is inefficient and rough because of the floating of bolster model and fit tolerance between guide pin and aligning hole.Auto orientation system based on machine vision obtains the coordination of aligning holes after the digital images have been captured and processed.Then,CNC system makes off-line transformation of machine coordinates to realize the adaptation of position and attitude from forming trajectory coordinates to bolster model coordinates.This non-touch agile locating system is rapid and precise.
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基金项目:
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国家自然科学基金资助项目(50175034)
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作者简介:
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参考文献:
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[1]朱振友,徐爱杰,林涛,等.机器人视觉的“手眼”关系快速标定算法[J].光学技术,2004,(30):150 152.
[2]Delta Tau Data Systems Inc.PMAC User’s Manual[M].Chatsworth California U.S.A.,Delta Tau Data SystemsInc.,1998.
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