挤压丝锥底空算法（Extruding tap bottom empty algorithm）.docVIP

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挤压丝锥底空算法（Extruding tap bottom empty algorithm）.doc

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挤压丝锥底空算法（Extruding tap bottom empty algorithm）

挤压丝锥底空算法（Extruding tap bottom empty algorithm） A formula of aperture crowded teeth: Formula: tooth outer diameter 1/2 * tooth distance Example 1: Formula: M3 * 0.5 = 3 (1/2 * 0.5) = 2.75mm M6 x 1 = 6 (1/2 * 1) = 5.5mm Example 2: Formula: M3 * 0.5 = 3 (0.5 / 2) = 2.75mm M6 x 1 = - (1 / 2) = 5.5mm Two. Conversion formula of general imperial wire attack: 1 inches =25.4mm (code) Example 1: (1/4-30) 1/4 x 25.4 = 6.35 (tooth diameter) 25.4 / 30 = 0.846 (pitch) The 1/4-30 converted to metric teeth should be: M6.35 * 0.846 Example 2: (3/16-32) 3/16 x 25.4 = 4.76 (tooth diameter) 25.4 / 32 = 0.79 (pitch) The 3/16-32 converted to metric teeth should be: M4.76 * 0.79 Three, the general British Dental converted to metric teeth formula: Molecular denominator / X 25.4 = tooth diameter (ibid.) Example 1: (3/8-24) 3 / 8 x 25.4 = 9.525 (tooth diameter) 25.4 / 24 = 1.058 (metric pitch) The 3/8-24 converted to metric teeth should be: M9.525 * 1.058 Four, UNF metric conversion formula: Example: 6-32 6-32 (0.06+0.013) / code x 6 = 0.138 0.138 x 25.4 = 3.505 (tooth outer diameter) 25.4 / 32 = 0.635 (pitch) Then, 6-32 converted to metric teeth should be: M3.505 * 0.635 1, bore diameter calculation formula: Tooth outer diameter 1/2 * tooth distance should be: M3.5051/2 * 0.635 = 3.19 Then, 6-32, the internal bore should be 3.19 2, extrusion wire tapping hole algorithm: Simplified calculation formula of lower aperture 1: Tooth outer diameter (tooth distance * 0.4250.475) / code = lower bore Case 1:M6 * 1 M6 (1 x 0.425) = 5.575 (maximum diameter) M6 (1 x 0.475) = 5.525 (minimum) Example 2: simple calculation formula of bore diameter of cutting wire: M6 (1 x 0.85) = 5.15 (maximum) M6 (1 x 0.95) = 5.05 (minimum) M6 - (tooth spacing * 0.860.96) / code = lower aperture 3:M6 * 1 = 5.0+0.05 = 5.05 = 61.0 Five. Simple formula for calculating tooth diameter: 1. diameter - 0.01 * 0.645 * tooth distance (need to pass gauge, stop gauge) 1:M3 x 0.5 = x 0.645 x 0.5 = 2.58 30.01 (OD) 2:M6 x 1 = x 0.645 x