两种高效螺钉

• 作 者: 王新华
• 机 构: 第一汽车厂工艺处,
• 出 处: 机械工人.冷加工
• 发表日期: 1985年06期
• 关键词: 装配效率 光孔 螺孔 十字形 入孔 端铣

本文所要介绍的是我在日本学习期间见到的两种能提高装配效率的螺钉。图1所示为一种自攻螺钉,它可直接拧入未经攻丝的光孔中,省去了螺孔攻丝工序,提高了装配效率。笔者曾看到日本工人用这种螺钉将标牌装在大型模具(材料是铸铁)上,其过程如下:①用风动钻机在模具上钻螺丝底孔;②在

This article describes two types of screws that I saw during my studies in Japan to improve assembly efficiency. Figure 1 shows a self-tapping screw, which can be directly screwed into the tap hole without tapping, eliminating the screw tapping process and improve the assembly efficiency. I have seen Japanese workers use this kind of screws to install the sign on a large mold (the material is cast iron). The process is as follows: ① Use a pneumatic drill to drill the bottom hole of the screw;