加长柄丝锥结构的改进

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笔者在研制新设备的过程中,按照设计要求需要对一系列的深孔攻螺纹,在采用外购的加长柄丝锥攻螺纹时,发现存在如下问题:(1)在初始切削时,对中性差,易偏摆,造成切削刃受撞易钝,并形成与工件攻螺纹底孔不同心切削。(2)柄部细长,容屑槽从刃部延长至柄部,使刃部与柄部的连接处强度? The author in the process of developing new equipment, in accordance with the design requirements require a series of deep-hole tapping thread, tap the use of outsourcing tapping the tap handle and found the following problems: (1) in the initial cutting, the poor neutral , Easy to bias, causing the cutting edge by blunt and blunt, and the formation of tapping the bottom hole with the workpiece is not heart-cutting. (2) The handle is slender, the chip flute extends from the blade to the handle, so that the strength of the connection between the blade and the handle?
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