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一、螺栓的加工和检查 1.采用搓丝模或滚丝模的冷挤压加工,是大批生产的主要加工手段(调节螺纹中径较方便)。但决定坯料尺寸十分重要,并且应在成批加工前,认真执行生产调试,做好中径的控制,保证质量。 2.小批量螺栓加工,采用车制坯料和圆板牙套丝时,需将圆板牙剖开,收缩中径后使用,以达到缩小中径的目的。 3.底金属是碳钢时,控制中径用二级精度环规的止端作通端用,但通
First, the bolt processing and inspection 1. The use of rolling mold or rolling mold cold extrusion process, is the main production means a large number of processing (adjustment thread diameter more convenient). However, it is very important to decide the size of the billet, and should be in the bulk processing, the serious implementation of production commissioning, good diameter control, quality assurance. 2 small batch bolt processing, the use of car billet and disc dental wire, the need to cut open the circular die, shrink the diameter after use, in order to achieve the purpose of reducing the diameter. 3. The end of the metal is carbon steel, the control diameter with two precision ring end stop for end use, but pass