CN203560251U - 互锁限位螺钉 - Google Patents

互锁限位螺钉 Download PDF

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CN203560251U
CN203560251U CN201320670748.3U CN201320670748U CN203560251U CN 203560251 U CN203560251 U CN 203560251U CN 201320670748 U CN201320670748 U CN 201320670748U CN 203560251 U CN203560251 U CN 203560251U
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肖晖
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Aecc Hunan South Astronautics Industry Co ltd
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HUNAN NANFANG AVIATION INDUSTRY CO LTD
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Abstract

本实用新型涉及一种互锁限位螺钉,包括螺钉头、圆锥销和螺杆。其要点是:螺杆上设有左旋螺文段和右旋螺文段;左旋螺文段的螺径小于右旋螺文段的螺径;左旋螺文段上设有内锥螺纹孔和通槽且螺纹入牙角大于螺纹出牙角,螺纹入牙角为45°~65°,螺纹出牙角为20°~40°。本实用新型的互锁限位螺钉结构简单、制造容易费用低,使用方便面,螺杆上设有左旋螺文段、右旋螺文段和内锥螺纹孔,右旋螺母拧入螺杆的右旋螺纹段上,左旋螺母拧入螺杆的左旋螺纹段上,使之相互咬合锁紧,再将锥形螺钉拧入内锥螺纹孔中使通槽胀开,左旋螺母紧固,使用中螺母不会松动,不需要反复调试,提高了互锁限位螺钉的可靠性和使用安全性。

Description

互锁限位螺钉
技术领域
 本实用新型涉及一种限位螺钉,具体涉及一种互锁限位螺钉。
背景技术
 旋转分度铣工专用夹具在安装时,螺钉贯穿夹具主体,螺钉底部由两个同向螺母紧固,靠近夹具体的螺母起调节限位作用,远离夹具体的螺母起紧固作用,此两螺母相互咬合后夹具体能自由旋转并限制了相应的位置关系,但是这种同向螺母调节不便,在加工过程中容易松动,甚至导致夹具体与分度卡盘卡死和人员受伤。
发明内容
 本实用新型的目的是要克服上述技术的缺点,提供一种结构简单,装配调试快速容易,省时省力,可靠性好的互锁限位螺钉。 
    本实用新型的互锁限位螺钉,包括螺钉头、圆锥销和螺杆,其特征在于:所述的螺杆上设有左旋螺纹段和右旋螺纹段,左旋螺纹段的螺径小于右旋螺纹段的螺径;所述的左旋螺纹段上设有内锥螺纹孔和通槽,圆锥销套装在螺杆上,右旋螺母拧入螺杆的右旋螺纹段上,左旋螺母拧入螺杆的左旋螺纹段上,使之相互咬合锁紧,再将锥形螺钉拧入内锥螺纹孔中使通槽胀开,左旋螺母紧固。
为了更好的实现上述目的:
所述的内锥螺纹孔的螺纹入牙角大于螺纹出牙角,螺纹入牙角为45°~65°,螺纹出牙角为20°~40°。
本实用新型的互锁限位螺钉结构简单、制造容易费用低,使用方便,螺杆上设有左旋螺纹段、右旋螺纹段、内锥螺纹孔和通槽,用锥度螺钉涨紧,使用中螺母不会松动,不需要反复调试,提高了互锁限位螺钉的可靠性和使用安全性。
附图说明
图1为本实用新型的结构示意图。
图2为图1的I处局部放大图。
   图中:1、螺钉头,2、螺杆,3、圆锥销,4、右旋螺纹段,5、左旋螺纹段,6、内锥螺纹孔,7、通槽,α、螺纹入牙角,β、螺纹出牙角。
具体实施方式
本实用新型的互锁限位螺钉,包括螺钉头1、圆锥销3和螺杆2。螺杆2上设有左旋螺纹段5和右旋螺纹段4。圆锥销3套装在螺杆2上,右旋螺母拧入螺杆2的右旋螺纹段4上,左旋螺母拧入螺杆2的左旋螺纹段5上,相互咬合锁紧,将锥形螺钉拧入内锥螺纹孔6中使通槽7胀开,使左旋螺母不会松动。
左旋螺纹段5的螺径小于右旋螺纹段4的螺径,左旋螺纹段为M14,右旋螺纹段为M16。左旋螺纹段5上设有内锥螺纹孔6和通槽7。内锥螺纹孔6的螺纹入牙角α大于螺纹出牙角β,螺纹入牙角α为55°,螺纹出牙角β为30°。
本实用新型的螺钉是这样使用的: 
将分度孔盘与夹具本体安装到位,螺杆2穿过分度孔盘和夹具本体的连接孔,圆锥销3套装在螺杆2上,右旋螺母拧入螺杆2的右旋螺纹段4上,调节右旋螺母的松紧程度,使得夹具本体既能自由旋转又不会上下串动;再将左旋螺母拧入螺杆2的左旋螺纹段5上,并压紧右旋螺母,使之相互咬合锁紧;最后将锥形螺钉拧入内锥螺纹孔6中使通槽7胀开,确保左旋螺母不会松动,安装连接好的夹具即可投入使用,使用过程中右旋螺母和左旋螺母不会松动,也不需要反复调节,提高了夹具的可靠性和安全性。

Claims (2)

1.一种互锁限位螺钉,包括螺钉头(1)、圆锥销(3)和螺杆(2),其特征在于:所述的螺杆(2)上设有左旋螺纹段(5)和右旋螺纹段(4),左旋螺纹段(5)的螺径小于右旋螺纹段(4)的螺径;所述的左旋螺纹段(5)上设有内锥螺纹孔(6)和通槽(7),圆锥销(3)套装在螺杆(2)上,右旋螺母拧入螺杆(2)的右旋螺纹段(4)上,左旋螺母拧入螺杆(2)的左旋螺纹段(5)上,使之相互咬合锁紧,再将锥形螺钉拧入内锥螺纹孔(6)中使通槽(7)胀开,左旋螺母紧固。
2.根据权利要求1所述的互锁限位螺钉,其特征在于:所述的内锥螺纹孔(6)的螺纹入牙角α大于螺纹出牙角β;螺纹入牙角α为45°~65°,螺纹出牙角β为20°~40°。
CN201320670748.3U 2013-10-29 2013-10-29 互锁限位螺钉 Expired - Lifetime CN203560251U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103541977A (zh) * 2013-10-29 2014-01-29 湖南南方宇航工业有限公司 互锁限位螺钉

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103541977A (zh) * 2013-10-29 2014-01-29 湖南南方宇航工业有限公司 互锁限位螺钉

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