CN201744713U - 伸缩钻头 - Google Patents

伸缩钻头 Download PDF

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CN201744713U
CN201744713U CN2010201920200U CN201020192020U CN201744713U CN 201744713 U CN201744713 U CN 201744713U CN 2010201920200 U CN2010201920200 U CN 2010201920200U CN 201020192020 U CN201020192020 U CN 201020192020U CN 201744713 U CN201744713 U CN 201744713U
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张志行
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Abstract

本实用新型涉及一种可调节钻头直径和钻孔深度的伸缩钻头,包括钻杆、V型支架、曲线刀、拉杆、活动轴、旋杆和伸缩杆,其特征在于两组V型支架之间装有曲线刀,钻杆头部且对应于曲线刀的收缩部位设有刀槽,在支架顶尖处分别连接有活动轴及定轴,活动轴与设在钻杆滑腔内的拉杆相连接,在拉杆另一端连接有伸缩杆,与拉杆交叉连接在端部有L型旋杆。本实用新型具有结构简单、增加了刀具作业功能、稳定性高、加工快捷高效,可根据需要随时调节钻头直径和钻孔深度等优点。

Description

伸缩钻头 
技术领域
本实用新型涉及一种外径可调节的伸缩钻头。 
背景技术
现有的钻头钻刀为固定式,钻头外径大小是一定的,而目前工程钻孔还要求钻头能达到伸缩可调,即根据需要随时调节钻头直径和钻孔深度,以增加钻头刀具功能和稳定性,现有的固定钻头则无法实现这种要求。 
发明内容
本实用新型的目的在于设计一种结构简单、刀具功能增多、稳定性高、加工快捷高效的伸缩钻头,可根据需要随时调节钻头直径和钻孔深度。 
为实现上述目的本实用新型所提供的技术方案是:一种伸缩钻头,包括钻杆、V型支架、曲线刀、拉杆、活动轴、旋杆和伸缩杆,其特征在于两组V型支架之间装有曲线刀,钻杆头部且对应于曲线刀的收缩部位设有刀槽,在支架顶尖处分别连接有活动轴及定轴,活动轴与设在钻杆滑腔内的拉杆相连接,在拉杆另一端连接有伸缩杆,L型旋杆与拉杆在拉杆的端部交叉连接。 
所述的拉杆单面杆身带有螺旋槽,该螺旋槽与L型旋杆纵向杆身的螺纹相啮合。 
本实用新型具有结构简单、增加了刀具作业功能、稳定性高、加工快捷高效,可根据需要随时调节钻头直径和钻孔深度等优点。 
附图说明
附图为本实用新型的剖视结构示意图。 
具体实施方式
参见附图,本实用新型主要由钻杆6、V型支架1、曲线刀4、拉杆8、活动轴5、旋杆7和伸缩杆13组成,两组V型支架1之间装有曲线刀4,在钻杆6头部且对应于曲线刀4的收缩部位设有收缩曲线刀的刀槽11,曲线刀以及收缩刀槽11可设计为二组或四组;位于钻头 尖2尾端的V型支架1顶点连接定轴3,相对支架顶尖处连接活动轴5,活动轴5与设在钻杆6滑腔10内的拉杆8相连接;在拉杆8尾端连接有凸块9,该凸块9与伸缩杆13端面的凹槽12配合连接,以调节钻头深度;L型旋杆7与拉杆8在拉杆的端部交叉连接,拉杆8的单面杆身带有螺旋槽,该螺旋槽与L型旋杆7纵向杆身的整体螺纹相啮合。当逆时针转动旋杆7时,旋杆带动拉杆及V型支架使钻头收缩,顺时针转动旋杆则使钻头张开。 

Claims (2)

1.一种伸缩钻头,包括钻杆、V型支架、曲线刀、拉杆、活动轴、旋杆和伸缩杆,其特征在于两组V型支架之间装有曲线刀,钻杆头部且对应于曲线刀的收缩部位设有刀槽,在支架顶尖处分别连接有活动轴及定轴,活动轴与设在钻杆滑腔内的拉杆相连接,在拉杆另一端连接有伸缩杆,L型旋杆与拉杆在拉杆的端部交叉连接。
2.根据权利要求1所述的伸缩钻头,其特征在于所述的拉杆单面杆身带有螺旋槽,该螺旋槽与L型旋杆纵向杆身的螺纹相啮合。 
CN2010201920200U 2010-05-11 2010-05-11 伸缩钻头 Expired - Fee Related CN201744713U (zh)

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CN2010201920200U CN201744713U (zh) 2010-05-11 2010-05-11 伸缩钻头

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CN2010201920200U CN201744713U (zh) 2010-05-11 2010-05-11 伸缩钻头

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CN201744713U true CN201744713U (zh) 2011-02-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110695410A (zh) * 2019-09-30 2020-01-17 达英科(南京)设备有限公司 可变径手持电钻

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110695410A (zh) * 2019-09-30 2020-01-17 达英科(南京)设备有限公司 可变径手持电钻
CN110695410B (zh) * 2019-09-30 2020-12-08 武义锐鹰工具制造有限公司 可变径手持电钻

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Granted publication date: 20110216

Termination date: 20120511