The tooth grinding process adopts the grinding tooth surface treatment method, which has the advantages of low transmission noise, high transmission technical efficiency and long service life. The most common material we use in the production process of gear grinding is steel, and steel includes quenched and tempered steel, hardened steel, carburized surface hardened steel and nitrided steel. Grinding is an effective tooth profile finishing method, usually used to machine hard tooth surfaces. It has a strong ability to correct the errors before grinding, and can achieve high precision.
1. The accumulative error of the grinding level accuracy of the grinding rack is 0.015mm/300mm (any 300mm);
2. The grinding rack has a straight tooth/helical tooth profile, which is suitable for various conditions of use;
3. The grinding rack has heat treatment type/non-heat treatment type, and the same module can have various strengths;
4. The grinding rack has a square/round appearance, which is easy to integrate and use;
5. The modulus of the grinding rack is 1~10, and the end that can be extended is designed, which can be connected/exchanged arbitrarily, and the stroke can be extended infinitely.
Grinding is mainly used for finishing the tooth surface. There are two processing methods: forming method and generating method.
For tooth grinding by forming method, the two sides of the grinding wheel near the outer circle should be trimmed into a shape that matches the teeth of the workpiece, and then the teeth that have been cut are ground. The processing method is similar to milling teeth with a gear milling cutter. Although the productivity of the forming method is higher than that of the generating method, the grinding wheel dressing is more complicated, and the uneven wear of the grinding wheel during gear grinding will reduce the tooth shape accuracy, and the machining accuracy of the machine tool is low due to the influence of the indexing accuracy. Therefore, in actual production, the forming method is used less, and the generating method is used more.
The generation method grinding can be divided into two types: double-bevel grinding wheel (or conical grinding wheel) grinding and two disc-shaped sand (or double grinding wheel) grinding according to the different grinding wheels and machine tools used. Grinding the teeth with the double-beveled grinding wheel is to dress the grinding wheel into a conical shape to form the tooth surface of the imaginary rack (Figure 1-3-10). The grinding wheel rotates at high speed and reciprocates along the axial direction of the workpiece in order to grind out the full tooth width. The workpiece is strictly in accordance with the pure rolling method of a gear along the fixed rack, and moves while rotating. When the workpiece rotates counterclockwise and moves to the right, the right side of the grinding wheel grinds the right tooth surface of the "inter-gear"; when the workpiece rotates counterclockwise and moves to the right After the right tooth surface between the teeth is ground from the tooth root to the tooth top, the machine tool makes the workpiece get the exact opposite movement to the above, and uses the left side of the grinding wheel to grind the left tooth surface between the teeth. When the grinding of the left tooth surface of the "inter-tooth" is completed, the grinding wheel enters the next inter-tooth and starts grinding again, and this cycle is automatic until all the inter-tooth grinding is completed.
Used in automated robots, gantry machining centers, laser cutting machines, aluminum profiles, woodworking machining centers, truss seventh axis and other fields. Such racks generally require high precision, accurate positioning and stable operation.