The most commonly used types of taps are Forming Thread Taps, Spiral Flute Taps, Straight Flute Taps, and Spiral Point Taps, which have various uses and performance advantages.
The difference between Forming Thread taps and cutting taps is that there is no cutting discharge during tapping, which is its characteristic. The processing surface of the internal thread is made by pressing and has a beautiful and smooth appearance. The material iron wire is continuous and not cut, and the thread strength increases by about 30%. The accuracy is stable. Due to the large diameter of the center of the Forming Thread taps, they have high endurance and torque strength, and the lifespan of the taps is long and not easy to break.
Spiral Flute Tap has a good effect on tapping and cutting continuously discharged steel materials in blind holes. Due to the fact that about 35 ° right spiral groove cutting can be discharged from the hole, the cutting speed can be increased by 30% -50% compared to Straight Flute Tap. The high-speed tapping effect of blind holes is good due to smooth cutting. The effect of cutting materials such as cast iron into fine fragments is poor.
Straight Flute Tap: It has the strongest versatility, and can be processed with through or through holes, non-ferrous or ferrous metals, and is also the cheapest in price. But the specificity is also poor, everything can be done, and nothing is done best. The cutting cone can have 2, 4, and 6 teeth, with a short cone for through holes and a long cone for through holes. As long as the bottom hole is deep enough, it is advisable to choose a longer cutting cone as much as possible, so that there are more teeth to share the cutting load and the service life is also longer.
The Spiral Point Tap has a special groove design at the front edge slot, making it easy to cut, with small torque and stable accuracy, which further improves the durability of the tap; When machining threads, chips are discharged forward, and its core size is designed to be relatively large, with good strength and can withstand large cutting forces. The processing effect of non-ferrous metals, stainless steel, and ferrous metals is very good, and the priority should be given to using Spiral Point Tap for through-hole threads
Which is better to use, Straight Flute Tap or Spiral Flute Tap?
Straight Flute Tap and Spiral Flute Tap are two different types of tools, and it is not accurate to say which one is better overall because their application pathways and processing requirements are different.
Straight Flute Taps are general-purpose taps that are easy to process, slightly lower in accuracy, and have a larger output. They are generally used for thread processing on ordinary lathes, drilling machines, and tapping machines, with a slower cutting speed.
Spiral Flute Taps are spiral shaped, so the upward rotation of the spiral groove can easily discharge iron chips out of the hole, which can improve the lifespan of the tap. Spiral Flute Taps are generally used for cutting high toughness materials (carbon steel, alloy steel, and non ferrous metals), and are not suitable for blind hole processing of materials such as cast iron and other chips into fine pieces.
So it's best to choose the right tool for the right environment.
Post time: May-18-2023