The utility model discloses a super-long-life drill bit, which comprises a successively connected tool handle and a tool rod. The end of the tool rod is provided with a bottom edge, the surface of the tool rod is provided with an outer circular milling part, which includes a step edge and an outer circular edge band. The two ends of the step edge are respectively connected with the bottom edge and the outer circular edge band, and the step edge includes a plurality of outer cutting edges arranged sequentially along the axial direction, and the outer cutting edge is cut. The cutting edge is located at the low edge end of one side of the bottom edge, the outer cutting edge is located at the high edge end of one side of the outer cutting edge band, and there is an oil groove between the two adjacent cutting edges. Along the direction from the bottom edge to the outer cutting edge band, in the two adjacent cutting edges, the height of the high edge of the front cutting edge is higher than that of the low edge of the latter cutting edge, and the height of the front cutting edge is higher. The height of the cutting edge is lower than that of the high edge of the later cutting edge. The utility model has the function of compensation, does not appear the cutting blind spot caused by wear, and effectively improves the service life of the cutting tool.
【技术实现步骤摘要】
一种超高寿命钻头
本技术涉及钻具领域,具体涉及一种超高寿命钻头。
技术介绍
用钻头在实体材料上加工孔叫钻孔,各种零件的孔加工,在工厂中均由车、镗、铣等机床完成,在钻床上钻孔时,一般情况下,钻头应同时完成两个运动;主运动,即钻头绕轴线的旋转运动(切削运动);辅助运动,即钻头沿着轴线方向对着工件的直线运动(进给运动),钻孔时,主要由于钻头结构设计上存在的缺点,影响钻头的使用寿命;特别是现有孔加工要求高,对成孔内壁表面的光滑度具有要求,现有钻头在使用时虽然能够满足要求,但是对一些硬质材料的加工会极大的加速损坏,其切削主要由底刃完成,而外圆刃部靠近底刃的部分也承担主要切削刃部,其余部分只是少部分切削,因此在外圆刃部靠近底刃的部分易磨损,出现切削盲点,无法满足使用。
技术实现思路
本技术要解决的技术问题是提供一种超高寿命钻头,具有补偿功能,不会出现磨损带来的切削盲点,有效提高刀具使用寿命。为了解决上述技术问题,本技术提供了一种超高寿命钻头,包括依次连接的刀柄和刀杆,刀杆的端头上设置有底刃,所述刀杆表面设置有外圆铣部,所述外圆铣部包括阶梯刃部和外圆刃带部,所述阶梯刃部两端分别与底 ...
【技术保护点】
1.一种超高寿命钻头,其特征在于,包括依次连接的刀柄和刀杆,刀杆的端头上设置有底刃,所述刀杆表面设置有外圆铣部,所述外圆铣部包括阶梯刃部和外圆刃带部,所述阶梯刃部两端分别与底刃和外圆刃带部衔接,所述阶梯刃部包括沿轴向方向依次设置的多个外切削刃,所述外切削刃位于底刃一侧的端部为低刃端,所述外切削刃位于外圆刃带部一侧的端部为高刃端,相邻两个外切削刃之间设置有过油槽;沿底刃至外圆刃带部的方向,相邻两个外切削刃中,前一外切削刃的高刃端设置高度高于后一外切削刃的低刃端设置高度,前一外切削刃的高刃端设置高度低于后一外切削刃的高刃端设置高度,其中设置高度为端部至钻头中心的距离。
【技术特征摘要】
1.一种超高寿命钻头,其特征在于,包括依次连接的刀柄和刀杆,刀杆的端头上设置有底刃,所述刀杆表面设置有外圆铣部,所述外圆铣部包括阶梯刃部和外圆刃带部,所述阶梯刃部两端分别与底刃和外圆刃带部衔接,所述阶梯刃部包括沿轴向方向依次设置的多个外切削刃,所述外切削刃位于底刃一侧的端部为低刃端,所述外切削刃位于外圆刃带部一侧的端部为高刃端,相邻两个外切削刃之间设置有过油槽;沿底刃至外圆刃带部的方向,相邻两个外切削刃中,前一外切削刃的高刃端设置高度高于后一外切削刃的低刃端设置高度,前一外切削刃的高刃端设置高度低于后一外切削刃的高刃端设置高度,其中设置高度为端部...
【专利技术属性】
技术研发人员:赵祥红,刘超,
申请(专利权)人:昆山市宏达模具五金有限公司,
类型:新型
国别省市:江苏,32
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