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在造船、矿山、冶金、机车和重型机器等行业中,常有一些重达几吨甚至几十吨的大型零件需要镗孔加工。这些孔的直径一般在300毫米以上,大的达1000毫米以上,并有一定的精度要求。有些孔无法用普通机床加工(如船体艉轴孔),有些孔因深度或两档孔壁间距离过长,用大型落地镗铣床加工很不经济或难以达到要求。为此,常需自制各种镗杆机进行镗孔加工。因此,在这些行业中,镗杆机的应用和设计是技术改造和设备更新中经常碰到的课题。
In shipbuilding, mining, metallurgy, locomotives and heavy machinery industries, there are often large parts that weigh up to a few tons or even tens of tons that require boring. The diameter of these holes is generally more than 300 mm, a large up to 1000 mm above, and a certain accuracy requirements. Some holes can not be machined with ordinary machine tools (such as the hull axis shaft hole), some holes due to the depth or the distance between the two gear hole wall is too long, with a large floor boring and milling machine processing is very difficult or difficult to meet the requirements. To this end, often need to make a variety of boring machine boring machine. Therefore, in these industries, the application and design of boring bar machine is a frequently encountered problem in technical innovation and equipment renewal.