1、

The equations for thread taper, thread pitch, thread angle and height of thread can be derived on the base of fitted lines, which are accurate enough to meet the needs of industrial measurement.

该方法可测量螺纹的锥度、螺距、螺纹夹角和螺纹高度,测量精度可以满足工业测量要求。

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3、

Side view of hexagonal jam nut. Selection box height represents thread diameter.

六角锁紧螺母的侧面图。选择框高度代表螺纹直径。

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4、

Relevant process testing showed that when threading the non-coupled end of a coupled tubing, thread quality was negatively affected little by the coupling, and that all the items inspected, namely taper, pitch, tooth height, standoff and L4 were within the specific tolerances.

工艺试验表明,带接箍油管另一端加工螺纹时,其接箍对螺纹质量基本无影响,其检验项目锥度、螺距、齿高、紧密距、L4长度均在公差允许范围内。

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