原帖由 <i>ttt1789</i> 于 2007-9-6 21:02 发表 <a href="http://www.3dportal.cn/discuz/redirect.php?goto=findpost&pid=1586926&ptid=352097" target="_blank"><img src="http://www.3dportal.cn/discuz/images/common/back.gif" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='Click here to open new window\nCTRL+Mouse wheel to zoom in/out';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor='hand'; this.alt='Click here to open new window\nCTRL+Mouse wheel to zoom in/out';}" onclick="if(!this.resized) {return true;} else {window.open('http://www.3dportal.cn/discuz/images/common/back.gif');}" onmousewheel="return imgzoom(this);" alt="" /></a><br /> 4 Z+ G1 N0 C* z. Y谢谢你的提醒,我说的也是在车床上铰孔,这是两个问题,第一个是铰孔能提高孔的圆度吗?<br />0 O; F- q2 e. C& I9 N9 X
第二个是有时铰孔,孔壁不平整,有小坑。我觉得可能是钻孔时,钻头有积屑瘤拉毛孔壁造成的,因为我们是钻孔后直接铰孔的。