Straight flute taps use: generally used for thread processing of ordinary lathes, drilling machines and tapping machines, and the cutting speed is slow. In high-hardness processing materials, materials that are likely to cause tool wear, cutting powdered materials, and through-hole blind holes with short tapping depth have good results.
It has the strongest versatility and can be processed with through-holes or non-through-holes, non-ferrous metals or ferrous metals, and the price is the cheapest. However, the pertinence is also poor, everything can be done, nothing is the best. The cutting cone part can have 2, 4, and 6 teeth. The short cone is used for non-through holes, and the long cone is used for through holes. As long as the bottom hole is deep enough, the cutting cone should be as long as possible, so that there are more teeth sharing the cutting load and the service life is longer.
For the tapping operation of non-through hole cut material, the spiral tap is different from the general hand tap in that the groove of the ordinary hand tap is linear, while the spiral tap is spiral. When the spiral tap is tapped, it is The upward rotation of the spiral groove can easily discharge iron filings out of the hole, so as to prevent iron filings from remaining or clogging in the groove, causing the tap to break and the blade to crack, so it can increase the life of the tap and cut the highest precision thread. The cutting speed can be 30-50% faster than that of straight flute taps.
Blind holes can be tapped with wire taps, but there are still many points to pay attention to when selecting wire taps for blind hole tapping. First of all, we must understand the nature of the material and the depth of the hole position, and the straight flute tap is a common tool. It has strong performance and weak pertinence, and its chip removal effect is not as good as that of spiral taps. Its main function is to contain chips. The limited chip space determines that the effective thread cannot be too deep, so I want to It is not impossible to tap blind holes with straight fluted taps, but it is not the best choice.
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Post time: Dec-07-2021
