What are the uses of spiral pointed tap?

2025-09-01 11:48:12

Taking into account both the chip holding effect and the strength of the tap, the maximum processing depth for spiral pointed tap is usually 2 times the diameter depth, which is 2 × D. When the diameter depth exceeds 2 times, a large amount of chips accumulate, which can damage the quality of the thread and even break the tap. This is particularly evident in tapping of adhesive materials such as stainless steel.

Broken chips. Due to the fact that the chip groove of spiral pointed tap does not have a chip removal function, it is required that they must have a good chip breaking effect. The Reverse Thread tap forms a chip breaking groove with the front blade surface and groove bottom arc to break the chips into C-shaped or smaller curled shapes and accommodate them. In the case of a constant chip breaking curvature, the better the plasticity of the material, that is, the more flexible the material, the worse the chip breaking effect.

On the contrary, the better the chip breaking effect. This is the main reason why spiral pointed tap are selected for processing cast iron and spiral groove taps are suitable for processing stainless steel. Of course, this also involves the needs of processing, the specific properties of materials, and the design characteristics of spiral groove taps. This will be explained in detail when introducing spiral groove taps.