CN201041003Y - 限位拓孔钻头 - Google Patents

限位拓孔钻头 Download PDF

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Publication number
CN201041003Y
CN201041003Y CNU2006200443104U CN200620044310U CN201041003Y CN 201041003 Y CN201041003 Y CN 201041003Y CN U2006200443104 U CNU2006200443104 U CN U2006200443104U CN 200620044310 U CN200620044310 U CN 200620044310U CN 201041003 Y CN201041003 Y CN 201041003Y
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China
Prior art keywords
drill
position limiting
drill bit
limited block
hole
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Expired - Fee Related
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CNU2006200443104U
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English (en)
Inventor
朱兵
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Individual
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Individual
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Abstract

本实用新型提供一种限位拓孔钻头,该钻头的钻身为双螺旋的,钻身后端特定位置有限位块支撑托,支撑托上套有限位块,钻头呈十字锥形四刀刃;限位块是一个橡塑套筒,套筒中心孔衬有一金属片。本实用新型的优点是,四刀刃钻头钻孔速度快,双螺旋钻身,排屑效率高,钻身后端的限位块,可准确控制拓孔深度,避免盲目拓孔深度。

Description

限位拓孔钻头
技术领域
本实用新型涉及一种钻孔的钻头。
背景技术
目前的拓孔钻,钻身一般是单螺旋,排屑效率低,而且拓孔深度不能准确控制。
发明内容
为解决前述拓孔钻存在的问题,本实用新型提供一种限位拓孔钻头,该钻头的钻身为双螺旋的,钻身后端特定位置有限位块支撑托,支撑托上套有限位块,钻头呈十字锥形四刀刃;限位块是一个橡塑套筒,套筒中心孔衬有一金属片。
本实用新型的优点是,四刀刃钻头钻孔速度快,双螺旋钻身,排屑效率高,钻身后端的限位块,可准确控制拓孔深度,避免盲目拓孔深度。
附图说明
附图1是本实用新型外形图。
附图2是附图1钻头的正面视图。
附图3是附图1的A-A向剖视图。
附图4是限位块的剖视图。
附图5是钻身后端限位块支撑托的剖面图。
具体实施方式
请参阅附图1、2、3、4、5所示,图1中的钻身6为双螺旋形,钻头1为十字锥形四刀刃,钻身6后端有限位支撑托7。
请参阅附图4所示,限位块2的中心孔3前端衬有金属片5,金属片5嵌进限位块2内,限位支撑托7四周呈圆形平面托4,圆形平面拖4嵌进限位支撑托7内腔,使限位块4套进限位支撑托7内不会脱落,此外,钻头1下方的斜边,形成切屑刀刃8,有助于拓孔速度。

Claims (2)

1.一种限位拓孔钻头,其特征在于:该钻头的钻身为双螺旋,钻身后端有限位块支撑托,支撑托上套有限位块,钻头呈十字锥形四刀刃。
2.按权利要求1所述的限位拓孔钻头,其特征在于:所述限位块是一个橡塑套筒,套筒中心孔衬有一金属挡片。
CNU2006200443104U 2006-07-27 2006-07-27 限位拓孔钻头 Expired - Fee Related CN201041003Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2006200443104U CN201041003Y (zh) 2006-07-27 2006-07-27 限位拓孔钻头

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2006200443104U CN201041003Y (zh) 2006-07-27 2006-07-27 限位拓孔钻头

Publications (1)

Publication Number Publication Date
CN201041003Y true CN201041003Y (zh) 2008-03-26

Family

ID=39252709

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2006200443104U Expired - Fee Related CN201041003Y (zh) 2006-07-27 2006-07-27 限位拓孔钻头

Country Status (1)

Country Link
CN (1) CN201041003Y (zh)

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C17 Cessation of patent right
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Granted publication date: 20080326