Broaching is mainly used for processing through the internal and external surfaces. According to the different parts of the surface can be divided into outer surface broaching and inner surface broaching. Broaching process has the following characteristics: Broaching at the same time there are many knife teeth work. A stroke to complete the rough, finishing. Usually the cutting speed is 2 ~ 8m / min. From the relationship between broaching speed and surface roughness. In this cutting speed, prone to BUE. Cutting speed is reduced. The machine is prone to crawl spacing; the speed is higher. (Due to technological progress, now has a speed higher than 4Om / min broaching).

Pull cutting is a closed processing. There are flutes between the teeth. The manufacture of broaches is complex. Expensive, only suitable for mass production applications. Broaching is a finishing operation. Precision up to 1T7-9, surface roughness Ra32 ~ 0.5 u m.