《机床》1977年第6期介绍一种卸刀搬手以代替一般钻床上用锤头敲打楔铁卸钻头的办法,既便于操作又可减少辅助时间。但发现尚有以下几点需要改进。 1.原图A向视斜面为6°20’,按此加工后,卸刀搬手只能插入钻床主轴长槽内9～18毫米,无法卸下钻头,应改为0°50’～1°20’左右。 2. “Machine Tool” No. 6, 1977 Introduction to a unloading knife to replace the general drilling machine with a hammer to wedge iron off the drill bit approach, both for operation and can reduce the auxiliary time. However, the following points need to be improved. 1. The original view A to the bevel as 6 ° 20 ’, according to this processing, the unloading knife can only be inserted into the long axis of the drilling spindle 9 ~ 18 mm, the drill can not be removed, should be changed to 0 ° 50’ ~ 1 ° 20 ’or so. 2.