Do you all know about Metric coarse thread tap?

2025-09-01 14:33:50

On one side of the straight groove, cut the cutting edge into a slanted groove to form an angle, and the chips are discharged forward in the direction of the feed. Suitable for through-hole machining.

When processing threads, chips are discharged forward by the Manual tap. Its core size is designed to be relatively large, with good strength and the ability to withstand large cutting forces. The processing effect of non-ferrous metals, stainless steel, and black metals is very good, and Metric coarse Thread tap should be preferred for through-hole threads.

It is more suitable for processing non-ferrous metals. Unlike the working principle of the Cutting tap mentioned above, it squeezes the metal to shape and deform it, forming internal thread Manual tap patterns. The internally threaded metal fibers formed by extrusion are continuous, with high tensile and shear strength, and good surface roughness during processing. However, the requirements for the bottom hole of the Extrusion tap are relatively high: too large, insufficient amount of base metal, resulting in a small diameter of the internal thread and insufficient strength. The metal that is too small and tightly squeezed has nowhere to go, causing the tap to break.

Mainly used for cutting threads of various through-hole materials, the Tip tap has the same straight groove as a general Straight groove tap, but has a specially designed spiral groove at the front end of its cutting part to rotate and push the cutting out from under the Metric coarse thread tap of the hole. Due to the function of rotating and discharging chips, the tip tap can not only maintain the cleanliness of the groove to reduce cutting resistance, but also avoid damage to the tap caused by cutting blockage. Therefore, the tip tap can use a faster speed than a general straight groove tap to cut high-precision threads.