Basic STD Capillary Geometry

基本標準劈刀幾何形狀

OR: outer radius 外半徑
H: Hole Diameter 劈刀內部通孔最小孔徑
CD: Chamfer Diameter 劈刀端口直徑
T: Tip Diameter 尖端直徑
ICA: Inner Chamfer Angle內倒角角度
OD: Outer Diameter 外徑
CA: Cone Angle 圓錐角度

L: length 劈刀長度

根據線徑來選擇劈刀H的直徑

劈刀的CD能精確控制球徑
劈刀關鍵設計規則
H = WD + Hole clearance
Hole clearance is proportional to WD

T > BPP > BPO > Ball dia > CD > H > WD~OR
T > CD + (2xOR) to maintain Tip effective face
Tip effective face = f (T,OR,CD)
Effective face = T – CD – (2xOR) > 0
CD = H + (2 x IC)
Inner Chamfer length = f (H,CD, ICA)
CD = H + (2xIC) or IC = (CD – H)/2
Inner Chamfer Volume = f (H, CD, ICA)
VNeck + VIC + VSquash = VFAB
OR is ~ WD