Overview of the main process flow of Hangzhou shaft machining parts
1. In the process analysis of the part drawing, it is necessary to understand the structural characteristics, precision, material, heat treatment and other technical requirements of the part, and to study the product assembly drawing, component assembly drawing and acceptance criteria.
2. The process route of carburized parts processing is generally: blanking → forging → normalizing → rough machining → semi-finishing → carburizing → decarburizing (for parts that do not need to increase the hardness) → quenching → threading, drilling Hole or groove milling → rough grinding → low temperature aging → semi-finishing → low temperature aging → fine grinding.
3. Selection of rough datum: If there is a non-machined surface, the non-machined surface should be selected as the rough datum. For casting shafts that need to be machined on all surfaces, align them according to the minimum machining allowance. And choose a smooth surface, let the gate open. Choose a firm and reliable surface as the rough datum, and at the same time, the rough datum cannot be reused.
4. Fine datum selection: To comply with the principle of datum coincidence, choose the design datum or assembly datum as the positioning datum as much as possible. Comply with the principle of unification of benchmarks. Use the same positioning datum in most processes as much as possible. Make the positioning reference coincide with the measurement reference as much as possible. Choose a surface with high precision, stable and reliable installation as the precision standard.
Hangzhou shaft machining parts should select different materials according to different working conditions and usage requirements, and adopt different heat treatment specifications to obtain certain strength, toughness and wear resistance.