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本攻丝夹头用于组合机床上无模板切制零件的细牙螺纹。这种夹头的结构不但可以调整夹头与工件的间距,而且还能完成切入段上的强制进给,随后在开始自攻切入时,又能自动切断强制进给,最后在加工完毕后,丝锥自动退刀。对于由软金属和合金(例如铝、镁等)所制造的零件,可以由丝锥的自攻进给来加工螺距小于0.8毫米的M3—M5的精确螺纹。在夹头中(见图)装有粗螺纹的差动螺母
This Tapping Chuck is used to combine the fine threads of a machine without a stencil cut part. The structure of the chuck not only can adjust the distance between the chuck and the workpiece, but also can finish the forced feeding on the cutting section, and then automatically cut off the forced feeding when the self-tapping cut-in starts. At the end of the processing, Taps automatically retract. For parts made of soft metals and alloys such as aluminum, magnesium, etc., the exact threading of M3-M5 with a pitch of less than 0.8 mm can be machined from tapping of the tap. In the chuck (see photo) equipped with coarse thread differential nut