安装盘绕的弹簧销时，安装工具通常称为“鹅毛笔”，应足够大，以覆盖盘绕销的整个末端。鹅毛笔的大小应使其在整个安装过程中同时推动所有五个线圈。否则，销钉将很难（如果不是不可能）正确安装到组件中。
如果鹅毛笔太小，内部线圈将穿过销钉的中心，从而产生“望远镜”效果，并推出盘绕销的后端。有时，用户将其称为PIN“拆开”。如果使用了适当的插入羽毛笔，则引脚不可能“望远镜”或“解开”。推动内线圈的副产品是升高的插入力，如果羽毛笔太小，则盘绕的销钉将无法弯曲孔的直径，因为鹅毛笔将放置在销钉的ID中。
Occasionally, a company will develop an insertion quill that has a stepped end intended to fit into the ID of the Coiled Pin to “help align the pin with the hole.” There are two problems with this scenario. The first is that the actual center of the Coiled Pin is not in the center of the ID.
Therefore, the effect of sticking something into the ID of the pin is that it will actually knock the pin off-center from the hole! The second problem is that the nib at the end of the installation tool may prevent the pin from collapsing as it is inserted into the hole. This can significantly raise insertion forces; and if the nib is large enough, prevent full insertion of the pin into the hole. In some cases, the quill can break off and get stuck in the ID of the pin causing downtime on the assembly line.
另一个常见的问题是，公司继续使用破旧的插入羽毛笔。随着时间的流逝，插入奎尔的末端将崩溃。在某个时候，鹅毛笔的末端将太小，不会覆盖盘绕销的整个末端。鹅毛笔将按下销钉的内线，并会出现插入问题。
The following exhibits what happened to a manufacturer of ejector clip assemblies when the installation tool their subcontractor used was not large enough to cover the entire end of the Coiled Pin. The result was that the insertion tool (quill) ended up pushing on the inner coils of the Coiled Pin, and made the pin “telescope” or “unwrap.” This dramatically increased the insertion force, and at times, prevented the pin from being fully installed into the assembly.
对于遇到这些安装问题的任何人，解决方案都很容易；只需更改安装工具即可。但是，最好一起避免这种情况。
Generally speaking, if the Coiled Pin is going to be installed flush or above flush, it is recommended that the insertion quill have a minimum diameter equal to the nominal diameter of the pin. If the pin is going to be installed sub-flush, it is recommended that the insertion quill have a diameter greater than or equal to the diameter of the chamfer at the very end of the pin. Considering that insertion quills are wear items, assemblers should periodically check the very end of the quill to make sure that it is always flat and square and that it meets the above diameter criteria.
Spirol International Corporation
www.spirol.com
Filed Under:工厂自动化,设计世界文章
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