1. In the process analysis of spindle parts drawing, it is necessary to understand the structural characteristics, precision, material, heat treatment and other technical requirements of the parts, and to study the product assembly drawing, part assembly drawing and acceptance criteria.
2. carburizing parts processing process route is generally: blanking → forging → normalizing → rough machining → carburizing → carburizing → to carburizing (to do not need to improve the hardness of the part) → quenching → car thread, drilling or milling slot → rough grinding → low temperature aging → half fine grinding → low temperature aging → fine grinding.
3. rough benchmark choice: there is a non-processed surface, the non-processed surface should be selected as a rough benchmark.For casting shafts where all surfaces need to be machined, aligning the surface according to the minimum machining allowance.And choose a smooth surface, let the sprue place.Choose a solid and reliable surface as the rough benchmark, at the same time, the rough benchmark is not reusable.
4. fine datum selection: to conform to the datum coincidence principle, as far as possible to choose the design datum or assembly datum as a positioning datum.Conform to the principle of unification of benchmarks.As far as possible, use the same positioning datum in most processes.Make positioning datum coincide with measuring datum as far as possible.Selection of high precision, stable and reliable installation surface as the fine benchmark.Whether the process regulation is reasonable directly affects the quality of the workpiece, labor productivity and economic benefits.A part can be made by several different processing methods, but only one of them is reasonable under certain conditions.Therefore, in the formulation of technological procedures, we must proceed from reality, according to equipment conditions, production types and other specific conditions, as far as possible to use advanced processing methods, formulate a reasonable process.
Post time: Apr-16-2021