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How is the machining depth of Tap calculated?
To calculate the machining depth of the Tap , check the following lengths from the drawing instructions or from the catalogue from Tap .
・ external center Length (please check the availability from the catalog)
The approximate Tap machining depth required to meet the effective thread length is the length added above plus one pitch as a margin.
▽ Tap Machining Depth
| = | Effective Thread Length (X) | + | chamfer General Manager (A) | + | external center Length (B) | + | 1 pitch (C) |
| (Incomplete screw length) | ( Tap Protrusion part of the tip) | Margin |
D: Approximate length of point angle part of the drill = Drill diameter × 0.3
If there is no room for Pilot hole depth in the stop, it is effective if the external center has been removed and the chamfer length is short.
chamfer There are 1.5 mountain and 1 mountain types in length. external center Removal.
chamfer Length 1.5 mountains. external center Removal.