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我厂标准件螺钉上的螺纹,过去是在小车床上用尖头螺丝车刀,一刀一刀的车出来的。这样,每个螺钉上的螺纹最少要车4～5刀才能完,需要一分多钟。后来改进了一种简单的套扣工具,加工一个螺纹只要10～15秒钟,提高工作效率4倍。工具的结构如图1,图中1是板牙架,左端带有锥度柄,与车床尾顶尖座配合。2是60°锥尾止头螺钉,3是90°锥尾止头螺钉,用来支紧板牙。4是标准圆板牙。工具的锥度柄装在车床尾顶尖座内,尾座与床面间的螺钉不要把紧,最好将螺钉拆下。
I plant standard screws on the thread, the past is in the small bed with a sharp-edged screwdriver, knife out of the car. In this way, the thread on each screw at least 4 ~ 5 knife to finish, need more than a minute. Later improved a simple set of tools, a thread processing as long as 10 to 15 seconds, improve work efficiency 4 times. The structure of the tool shown in Figure 1, the figure 1 is a flapper frame, the left end with a taper handle, with the lathe tail tip seat. 2 is a 60 ° taper tail stop screw, 3 is a 90 ° taper stop screw, used to support the die. 4 is a standard round die. Taper handle tool installed in the lathe tail tip seat, the tailstock and the bed between the screws do not tight, it is best to remove the screw.