2021 China New Design Od Grinding - Tungsten carbide tamping tines use tip wearing part for Railway Industry – Zhongfu

There are many narrow grooves on the tooth surface to form the cutting edge, and the gear-shaped gear machining tool is used to machine the workpiece according to the principle of helical gear meshing. During processing, the tool cuts beard-like fine chips from the tooth surface of the gear, so it is called a gear shaving cutter. Gear shaving cutters are used for finishing gear teeth after gear hobbing and gear shaping (see gear processing). The commonly used disc-shaped gear shaving cutter is like a hardened helical cylindrical gear (Figure 1). The groove on the tooth surface has two forms: one is that a circular or spiral pass is opened on the entire gear ring. The cross section of the groove can be rectangular or trapezoidal. This shaving cutter only sharpens the front face (groove) after being blunt. It is suitable for shaving cutters with modulus less than 1.75 mm; the other is that the grooves on both sides are impassable, which are inserted separately with comb-shaped inserts. In order to make the inserts can withdraw the knife, it is placed at the root of each tooth. Drill slanted holes. After this kind of shaving cutter is blunt, it needs to regrind the tooth profile and the cylindrical surface of the tooth top.