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    自攻螺套
    瀏覽: 發布日期:2018-09-18

     
    自攻螺套


    自攻螺套也叫做自攻牙套,自攻襯套。
    自攻螺套內外都有螺紋,是一種加強螺紋強度緊固件。自攻螺套嵌入鋁合金,塑料,鐵銅等較軟的材料內,可以形成高強度內螺紋孔,同時也可以對以壞的內螺紋進行修復。
    不銹鋼自攻牙套

    左圖是一款不銹鋼自攻螺套
    規格:M8*14*M5(內螺紋M5,外螺紋M8,長度8MM)
    材質:SUS304不銹鋼
    表面處理:洗光、本色
    不銹鋼自攻螺套具有超強度耐腐蝕規格,適用在潮濕惡劣環境中保護螺紋孔不會繡死。
    自攻螺套的圖紙和規格參數
    302自攻螺套圖紙:

    302型自攻螺套的規格參數,單位MM
    302型(開槽型) 長度L 外螺紋D 參考鉆孔直徑 最小鉆孔深度
    公制 英制 塑料 類 鋁合金 鑄鐵
    M2-0.4   6 M4.5-0.5 4.0-4.1 4.1-4.2 4.2-4.3 8
    M2.5-0.45 #2-56 6 M4.5-0.5 4.0-4.1 4.1-4.2 4.2-4.3 8
    M3-0.5 #4-40 6 M5-0.5 4.5-4.6 4.6-4.7 4.7-4.8 8
    M4-0.7 #8-32 8 M6.5-0.75 5.8-5.9 6.0-6.1 6.1-6.2 10
    M5-0.8 #10-24 10 M8-1.0 7.1-7.2 7.3-7.5 7.5-7.6 13
    M6a-1.0   12 M9-1.0 8.1-8.2 8.3-8.5 8.5-8.6 15
    M6-1.0 1/4-20 14 M10-1.5 9.0-9.2 9.2-9.3 9.3-9.4 17
    M8-1.25 5/16-18 15 M12-1.5 10.6-10.8 11-11.2 11.2-11.4 18
    M10-1.5 3/8-16 18 M14-1.5 12.6-12.8 13.0-13.3 13.2-13.4 22
    M12-1.75 7/6-14 22 M16-1.5 14.6-14.8 15.0-15.3 15.2-15.4 26
    M14-2.0 1/2-13 24 M18-1.5 16.6-16.8 17.0-17.3 17.2-17.5 28
    M16-2.0 5/8-11 22 M20-1.5 18.6-18.8 19.0-19.3 19.2-19.5 27
    M18-2.5   24 M22-1.5 20.6-20.8 21.0-21.3 21.2-21.5 29
    M20-2.5   27 M26-1.5 24.6-24.8 25.0-25.3 25.2-25.2 32
    這里需要注意的是M6有兩種規格,它們的長度,外螺紋及鉆孔直徑,鉆孔深度都是不一樣的,如需M6規格的自攻牙套請事先說明。
    303薄壁槽型自攻螺套的規格參數,單位MM
    303型(薄壁槽型) 長度 外螺紋 參考鉆孔直徑 最小鉆孔深度
    M3-0.5 6 M4.5-0.5 4.2-4.3 8
    M4-0.7 8 M6-0.7 5.6-5.7 8
    M5-0.8 8 M7-0.8 6.6-6.7 10
    M6-1.0 10 M8-1.0 7.5-7.6 13
    M8-1.25 14 M10-1.25 9.2-9.4 15
    307,308三孔型自攻螺套的規格參數,單位MM

    自攻螺套的優點
    1.自攻螺套具有自行攻螺紋能力,母材不必預先攻牙,不需要用絲錐,可自行攻螺紋,減少工時,并可降低成本
    2.保護螺牙:具防震效果,可防止螺紋松動。
    3.螺紋潰牙再生:對于已磨損并潰牙之螺紋具有維修作用,使用自攻螺紋套可繼續使用原有尺寸的螺絲。
    4.自攻牙套的氣密性及耐震性極佳,可防止松動,提高與母材的締結強度
    5.自攻牙套和成品接觸面大,承受拉力強,產品設計時可使用較低強度之材料。
    6.母材若含氣泡時,也具有良好的結合密度。
    7.自攻牙套安裝簡便,迅速,只要一種裝入工具,成本低,不良率
    8.同樣規格的自攻牙套,可適用于多種不同的材質,符合經濟效益。
    自攻螺套的類型
    常用的自攻螺套從外觀上大致分為兩種類型,一種是開槽型自攻螺套,另一種是三圓孔型,三圓孔型分為307和308型兩種,307和308的分別在于同一直徑下,外徑和長度不一樣。詳情請看以上規格參數表。
    自攻螺套的材質
    產品名稱 所用材質 元素名稱及化學成份
    碳(C) 錳(Mn) 硅(SI) 磷(P) 硫(S) 鉻(Cr) 鎳(Ni) 鉬(Mo)
    自攻螺套 1215快削鋼 ≤0.09 0.75-1.05 ≤0.10 0.04-0.09 0.26-0.35 -- -- --
    SUS303不銹鋼 ≤0.15 ≤2.00 ≤1.00 ≤0.20 ≤0.15 17-19 8-10 ≤0.60
    SUS304不銹鋼 ≤0.08 ≤2.00 ≤1.00 ≤0.045 ≤0.030 18-20 8-11 --
    SUS316不銹鋼 ≤0.08 ≤2.00 ≤1.00 ≤0.045 ≤0.030 16-18 10-14 2-3
    這里需要說明的是不銹鋼材質的自攻螺套我們默認SUS304的,如需SUS303和316請提前告知我們。
    自攻螺套的安裝方法和注意事項
    安裝方法非常簡單,分為兩種

    一:如果安裝數量很少時,直接采用最簡單的安裝方法,用與自攻螺套對應相同規格的螺栓和螺母的方法,如圖所示,將自攻螺套固定在對應型號的螺栓上,在用同型號的螺母固定,使三者成為一個整體,再用扳手把螺套擰入底孔,然后把螺絲退出來即可,安裝完成。


    二:如果安裝數量很大的話,就要采用專用工具來安裝了,自攻螺套安裝工具尾端為一六角頭,(具體操作請參照左圖)可連手動攻牙扳手,也可接電動或氣動工具。
    安裝注意事項:
    1.針對不同的加工材質,參考鉆孔尺寸規格,進行預鉆孔加工。當對應材質硬度較高時,請在鉆孔范圍內稍微加大所開的底孔。
    2. 開槽一端向下將自攻螺套完全安裝進工具前端,須垂直接觸工件。裝入時(1~2螺距)請確認對準底孔,絕不可傾斜。發現傾斜時,請不要反轉工具并重新調整再使用。當進入1/3~1/2以后,便不可重新再來,切記請不要反向旋轉工具,否則會造成產品故障。
    自攻螺套的用途
    自攻螺套現已廣泛運用于汽車工業、船舶工業、軌道車工業、家電用品、建筑機械、事務機器、工程塑料、高級組合家具、電子產品、等等有關行業。

     
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