CN202155575U - 台阶麻花钻 - Google Patents

台阶麻花钻 Download PDF

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Publication number
CN202155575U
CN202155575U CN2011202107081U CN201120210708U CN202155575U CN 202155575 U CN202155575 U CN 202155575U CN 2011202107081 U CN2011202107081 U CN 2011202107081U CN 201120210708 U CN201120210708 U CN 201120210708U CN 202155575 U CN202155575 U CN 202155575U
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China
Prior art keywords
edge
sword
twist drill
stepped twist
utility
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Expired - Fee Related
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CN2011202107081U
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English (en)
Inventor
朱胜雷
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Wuxi Yutian Precision Tool Co Ltd
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Wuxi Yutian Precision Tool Co Ltd
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Priority to CN2011202107081U priority Critical patent/CN202155575U/zh
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Abstract

本实用新型涉及一种台阶麻花钻,由刃部和柄部构成,其特征在于,所述刃部分为两级,包括设置于前端的一级刃,其直径小于设置于一级刃根部后的二级刃;所述一级刃与二级刃之间设置有过渡刃,过渡刃的刃角设置为45°。使用本实用新型台阶麻花钻是,小孔与较大的通孔仅通过一次钻孔作业即可完成,工作效率大大提高。

Description

台阶麻花钻
技术领域
本实用新型涉及一种孔加工刀具,特别涉及一种台阶麻花钻。
背景技术
传统的直柄麻花钻,钻头仅有一种规格,钻孔时,只能够完成单一尺寸的钻孔作业,在小孔的基础上完成较大直径的通孔作业时,需要更换尺寸较大的钻头,进行二次钻孔,这样就需要两次操作,效率较低。
实用新型内容
为了克服上述缺点,本实用新型提供一种台阶麻花钻。
本实用新型的技术方案为:一种台阶麻花钻,由刃部和柄部构成,其特征在于,所述刃部分为两级, 包括设置于前端的一级刃,其直径小于设置于一级刃根部后的二级刃;所述一级刃与二级刃之间设置有过渡刃,过渡刃的刃角为45°。
本实用新型的有益效果为:小孔与较大的通孔仅通过一次钻孔作业即可完成,工作效率大大提高。
附图说明
图1为本实用新型结构图。
具体实施方式
由图1所示,本实用新型的实施例如下:
台阶麻花钻由两级刃部与柄部4构成,所述刃部包括设置于前段的一级刃1、设置于一级刃根部后的二级刃2以及设置于一、二级刃之间的过渡刃3,一级刃1的直径d1小于二级刃2的直径d2,其比例设置为d1:d2=0.785:1,过渡刃3的刃角设置为45°。

Claims (1)

1.一种台阶麻花钻,由刃部和柄部构成,其特征在于,所述刃部分为两级, 包括设置于前端的一级刃,其直径小于设置于一级刃根部后的二级刃;所述一级刃与二级刃之间设置有过渡刃,过渡刃的刃角设置为45°。
CN2011202107081U 2011-06-21 2011-06-21 台阶麻花钻 Expired - Fee Related CN202155575U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202107081U CN202155575U (zh) 2011-06-21 2011-06-21 台阶麻花钻

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202107081U CN202155575U (zh) 2011-06-21 2011-06-21 台阶麻花钻

Publications (1)

Publication Number Publication Date
CN202155575U true CN202155575U (zh) 2012-03-07

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Family Applications (1)

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CN2011202107081U Expired - Fee Related CN202155575U (zh) 2011-06-21 2011-06-21 台阶麻花钻

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CN (1) CN202155575U (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102717113A (zh) * 2012-05-25 2012-10-10 徐州中矿金海泵业有限公司 一种铸管管模排气孔的加工工艺
CN104190968A (zh) * 2014-08-01 2014-12-10 常州创伟工具制造有限公司 左旋单刃刀

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102717113A (zh) * 2012-05-25 2012-10-10 徐州中矿金海泵业有限公司 一种铸管管模排气孔的加工工艺
CN104190968A (zh) * 2014-08-01 2014-12-10 常州创伟工具制造有限公司 左旋单刃刀

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120307

Termination date: 20120621