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图1所示不锈钢拉杆是切削加工的,攻螺纹时山于孔深,排屑困难,丝锥易折断,因此成为生产上的关键。现改为用φ6毫米的不锈钢管冷缩成型,并将螺纹长度由22毫米减到7毫米。使用通用丝锥攻制螺纹,丝锥的耗消量减少了80％,而且节约了长杆的专用丝锥。工艺改变后的工件如图2所示,零件重量减轻了50％以上,原材料节约78％,提高工效4倍,取得了明显的经济技术效果。
Stainless steel rod shown in Figure 1 is machined, tapping the hole when the hole depth, chip evacuation difficulties, easy to break the tap, it became the key to the production. It is now cold-formed with a φ6 mm stainless steel tube and the thread length reduced from 22 mm to 7 mm. The use of general-purpose tap tap, taper consumption reduced by 80%, and save the pole of the special tap. After changing the process of the workpiece shown in Figure 2, parts weight reduced by 50% or more, saving 78% of raw materials, improve work efficiency 4 times, and achieved significant economic and technological results.