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对于较长的筒形类零件,在普通车床上镗孔,由于所需镗杆的伸出量较大,所以是比较困难的。如果工件的外形又是不规则的,用套爪和爪卡盘对中心也是比较困难的。如果采用图示的方法,也许能有所帮助。如图,用一个简单的V型夹具,将工件装夹在车床的拖板上,将一端打有中心孔的幢杆通过工件装在车床的卡盘与尾座顶尖之间,镬杆由卡盘带动旋转。如果零件批量较大,也可以在惶杆上同时装上
For longer cylindrical parts, boring on a regular lathe is more difficult due to the greater amount of boring bar extension required. If the workpiece shape is irregular, with the jaw and jaw chuck on the center is more difficult. If the method shown in the diagram, may be helpful. Figure, with a simple V-type fixture, the workpiece is mounted on the lathe drag plate, one end of the center hole hit by the work piece installed in the lathe chuck and the tailstock center between the pole by the card Disk drive rotation. If the parts are large, you can also put on the panic at the same time