CN209503049U - 一种防止丝锥转动的钻夹具 - Google Patents

一种防止丝锥转动的钻夹具 Download PDF

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CN209503049U
CN209503049U CN201822060288.8U CN201822060288U CN209503049U CN 209503049 U CN209503049 U CN 209503049U CN 201822060288 U CN201822060288 U CN 201822060288U CN 209503049 U CN209503049 U CN 209503049U
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Prior art keywords
screw tap
hole
locating piece
head cap
screw
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王山
袁涛
张红枝
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Dezhou Hengli Motor Co Ltd
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Dezhou Hengli Motor Co Ltd
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Abstract

一种防止丝锥转动的钻夹具由一个钻夹头、一个定位块和两个内六角螺钉组成。所述钻夹头径向设置有定位块安装孔和内六角螺钉安装孔，轴线设置有丝锥导向孔，所述定位块中心部位设置方形孔，用于丝锥的安装定位。该夹具优点在于：对高硬度、深孔的工件攻丝过程中，对丝锥起到周向固定作用，防止丝锥转动产生的钻夹具磨损，影响丝孔合格率。

Description

一种防止丝锥转动的钻夹具
技术领域
本发明是主要应用于丝锥刀具钻孔的钻床应用领域。
背景技术
钻床在机械加工领域是应用最为广泛的机床，型号、大小各式各样，均采用丝锥进行攻丝。普通钻夹具对丝锥的固定通过螺纹锁紧，在实际的攻丝过程中，丝锥会经常性的正反转来避免夹屑，对于加工硬度比较高或孔深比较大的工件，由于丝锥承受的周向扭矩比较大，往往会出现转动的现象，一旦丝锥转动会造成钻夹具磨损，影响丝孔合格，甚至丝锥崩断造成工件损坏、人员受伤的危险。
发明内容
本实用新型所要解决的主要问题是：解决对高硬度、深孔工件钻床攻丝时丝锥转动，造成钻夹具磨损、丝孔不合格问题。
本实用新型解决其技术问题所采用的技术方案是：
本实用新型由一个钻夹头、一个定位块和两个内六角螺钉组成。钻夹头径向设置有定位块安装孔和内六角螺钉安装孔，轴线设置有丝锥导向孔，定位块安装于钻夹头中，定位块与内六角螺钉用于丝锥的周向定位和固定。其特征是：钻夹头设置定位块安装孔、丝锥导向孔和内六角螺钉安装孔；定位块中心设置方形孔，作为定位孔用于丝锥插入，阻止丝锥的周向转动；2个内六角螺钉固定丝锥。
本实用新型的有益效果是：
1)成本低，结构简单，易实现。
2)易操作，维护方便。。
附图说明
下面结合附图和实施对本实用新型进一步说明。
图1是本实用新型钻夹具组装局部剖视示意图。
图2是本实用新型钻夹头示意图。
图3是本实用新型钻定位块示意图。
图中本实用新型零部件的名称：
1-钻夹头；2-定位块；3-内六角螺钉；4-丝锥；
具体实施方式
1)如图1-2所示，一种防止丝锥转动的钻夹具组装示意，该夹具包括钻夹头1、定位块2和内六角螺钉4，攻丝时，丝锥通过钻夹头1的孔14插入定位块2的孔21中，并用2个内六角螺钉4夹紧固定。
2)钻夹头1内开设有定位块2的安装孔11，该孔与定位块为间隙配合H9/h9；开设的丝孔12和丝孔13为对称关系，用于安装内六角螺钉，起到丝锥的固定作用；开设的孔14为丝锥的导向孔。
3)定位块2正中部位开设方形通孔21，该孔可有效防止丝锥转动，孔的加工精度为H9；定位块经过调质处理，以增加表面硬度。

Claims (1)

1.一种防止丝锥转动的钻夹具，由一个钻夹头、一个定位块和两个螺钉组成，钻夹头径向设置有定位块安装孔和内六角螺钉安装孔，轴线设置有丝锥导向孔，定位块安装于钻夹头中，定位块与内六角螺钉用于丝锥的周向定位和固定；其特征是：钻夹头开设定位块安装孔、丝锥导向孔和内六角螺钉安装孔，定位块中心设计方形孔，作为定位孔方便丝锥插入，阻止丝锥的周向转动；2个内六角螺钉固定丝锥。
CN201822060288.8U 2018-12-02 2018-12-02 一种防止丝锥转动的钻夹具 Active CN209503049U (zh)

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CN201822060288.8U CN209503049U (zh) 2018-12-02 2018-12-02 一种防止丝锥转动的钻夹具

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CN209503049U true CN209503049U (zh) 2019-10-18

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