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在平台上划线,通常是工件远远小于平台。可是,当工件接近或稍大于平台时,工件占去整个平台,使划线尺无处可放,划线就困难了。采用如下方法可解决这一问题:在三个千斤顶下面附加一块3~4毫米厚的铁板(要平整)。其面积可小于工件。把附加铁板、千斤顶和工件在平台上依次放稳(如图)。划线时慢慢推动附加铁板,则千斤顶和工件会随着一起移到平
Marking on the platform, usually the workpiece is much smaller than the platform. However, when the workpiece is close to or slightly larger than the platform, the workpiece takes up the entire platform, making the scribe line nowhere to be placed and scribing difficult. Use the following method to solve this problem: Add a 3 ~ 4 mm thick iron under the three jacks (to be flat). Its area can be smaller than the workpiece. The additional iron plate, jack and workpiece in turn on the platform to stabilize (Figure). Slowly promote the scribing additional iron, the jack and the workpiece will be moved together with the flat