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深圳螺丝厂家介绍自攻螺丝螺纹型式规格

文章出处:人气:0发表时间:2017-10-18【 返回列表

标准自攻螺丝辨识字符,包括代表螺纹及尾部型状之符号。Standard self-tapping screws Identify characters, including symbols representing threads and tail shapes.自攻螺丝有一个或两个代表螺纹的字符用以代表机械螺纹或宽螺纹(SPACED)。Self-tapping screws have one or two character representing the thread to represent the mechanical thread or wide thread (SPACED).如带有辨识字符”B”代表为宽螺纹螺丝.无”B”者代表为机械螺纹。Such as with a recognizable character "B" stands for wide thread screw. No "B" stands for mechanical thread.尾端代表字符用以区分自攻螺丝为螺纹成型,切削,滚成或自钻。The tail character is used to distinguish the tapping screws from threading, cutting, rolling or self drilling.

 

自攻螺丝 晋升泰精密(深圳)有限公司.jpg


 

  机械螺纹与英美统一螺纹一样具有60度之螺纹角及粗,细螺纹相同之螺距,如果在拆卸后螺丝遗失或有需要的话,可以用标准螺纹扣件代替之。The mechanical threads have a thread angle of 60 degrees and the same pitch as the thick and fine threads, like the United States and the United States, and can be replaced with standard threaded fasteners if they are lost or if required after removal.

 

宽螺纹具有一60度之螺纹角但其螺距则较宽,而因其宽螺距之故,其螺纹较陡因此其螺纹导程比机械螺纹为大。另有一种专使用于塑料上的螺纹,其螺纹角度为48度,俗称PT牙螺丝。The wide thread has a thread angle of 60 degrees but its pitch is wide, and because of its wide pitch, its thread is steep so its thread lead is larger than the mechanical thread. There is also a special thread used in plastic, the thread angle of 48 degrees, commonly known as PT dental screw.


 

  螺纹成型自攻螺丝A,AB,B,BP,C等型式目前已逐渐为螺纹滚成自攻螺丝所取代,故在新设计中不建议使用。AB,B,BP不同处仅在尾部形状,AB有一个螺纹锥尾,B有一个钝尾,BP有一个无螺纹之锥尾,尖尾中心进入预钻孔并开始使螺纹成型。Threaded self-tapping screws A, AB, B, BP, C and other types are now gradually screwed into self-tapping screws replaced, it is not recommended in the new design. AB, B, BP only at the end of the shape, AB has a thread cone, B has a blunt tail, BP has a screwless cone, the tip of the center into the pre-drilling and began to thread forming.螺纹切削自攻螺丝有BF,BP,D,F,G及T等形式,BF,BP为宽螺纹,其余为机械螺纹。Thread cutting self-tapping screws are BF, BP, D, F, G and T and other forms, BF, BP for the wide thread, the rest for the mechanical thread.


 

  辨识字符不同点在于其切削尾。每一种切削尾都有一个可以收集切削下废料之形状。如果自攻螺丝旋入盲孔(不贯通之孔),则其碎片将残留且密封于孔底。但如攻入贯通孔时,则废料将掉在工件的另一边。所以在选择本型式自攻螺丝时必需考虑及此,废料可能会造成污染,掉进运转中之零件或使电子基板无法运作。Identify characters differ in their cutting tail. Each cutting tail has a shape that can collect the waste under cutting. If the tapping screw is screwed into the blind hole (not through the hole), the debris will remain and sealed at the bottom of the hole. However, if the penetration through the hole, the waste will fall on the other side of the workpiece. Therefore, in the choice of this type of self-tapping screws must be considered and this, the waste may cause pollution, fall into the operation of the parts or the electronic substrate can not operate.

 

所有螺纹滚成自攻螺丝均为机械螺纹,与英美统一螺纹粗牙一样,请参阅SAEJ81规定。公制螺纹请参阅SAEJ1237及DIN7500规定。All threads are self-tapping screws are mechanical threads, and Anglo-American uniform thread, see SAEJ81 regulations. Metric thread See SAEJ1237 and DIN7500 regulations.


 

  钻尾自攻螺丝有切削宽螺纹BSD及机械螺纹CSD两种型式。另尚有特殊螺纹型式,包含高低双螺纹,同时各种攻钻尾亦适用。因为攻钻尾及螺纹性质,钻尾螺丝不适用于盲孔作业。在组装自钻螺丝时,钻尾需完全穿透工件后方可进行螺纹之切削或成型,所以通常会有一些碎屑,如果又使用螺纹切削型螺纹,更免不了有碎屑。因此实用上必需考虑此一问题。有关于BSD及CSD钻尾螺丝请参阅SAEJ78及DIN7504(宽螺纹)之规定。Drilling tail tapping screws are cutting wide thread BSD and mechanical thread CSD two types. There are special thread type, including high and low double thread, while all kinds of drilling tail is also applicable. Due to the drilling tail and the nature of the thread, the drilling screw is not suitable for blind hole operation. In the assembly of self-drilling screws, drilling tail need to completely penetrate the workpiece before the thread can be cut or formed, so there will usually be some debris, if you use the thread cutting thread, more can not avoid the debris. So practical need to consider this issue. For BSD and CSD drilling screws please refer to SAEJ78 and DIN7504 (wide thread) requirements.

 

以上就是自攻螺丝螺纹型式的规格,希望对您有所帮助。

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