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贵刊1992年第3期第37页介绍湖北拖拉机厂的工具很好,但根据图纸所给尺寸,内六角孔壁。最薄处只有2mm,要是再经热处理可能韧性不够易断裂且装配也有点困难。尤其是中小型工厂难以控制薄壁零件的热处理变形。我厂长期以来使用的机旋双头螺柱工具如图示。工具体1上的方孔与风动搬手配用,内螺纹套在螺柱上。钢球2是为了减少工具体1与螺柱端面的摩擦力便于本工具脱离螺柱。橡胶旋塞3是用来防止钢球脱落的。这种结构有利于工具的热处理。我厂使用的工具体1是用45钢经热处理:硬度HRC35～40。要是能
No.3, 1992, No.3, Page 37 Introduction The tools of Hubei Tractor Factory are very good, but according to the drawing given, the hexagonal hole wall. The thinnest at only 2mm, if by heat treatment may not be easy to fracture toughness and assembly is also a little difficult. In particular, it is difficult for small and medium-sized factories to control heat treatment deformation of thin-walled parts. The long-term use of our machine screw double stud tools as shown. The square hole on the tool body 1 is matched with the wind moving hand, and the female thread is sleeved on the stud. The ball 2 is to reduce the friction between the tool body 1 and the end face of the stud to facilitate detachment of the tool from the stud. Rubber stopper 3 is used to prevent the ball from falling off. This structure facilitates the heat treatment of the tool. I use the tool body 1 is 45 steel heat treatment: hardness HRC35 ~ 40. If you can