According to the different production process, the production process of precision parts can be divided into: forging, forging, metal mold, welding, heat treatment, machining, manufacturing, assembly line and so on. The whole process of precision parts processing and production process generally refers to the general name of the whole process of all parts machining center production and processing and industrial equipment assembly line, while other methods such as cleaning, inspection, equipment maintenance and management, skeleton sealing are only auxiliary software whole process. Milling method changes the surface characteristics of raw materials or production processing, the whole process is known as the whole process of CNC lathe processing technology. In the precision parts processing and machining industry, the whole process of CNC lathe processing technology is the more important production process you have been in.

1. Precise positioning benchmark is the precise positioning benchmark used by CNC lathe or welding fixture when machining in machining center.

2. Measurement datum, which generally refers to the specification, model or position standard that should be followed as much as possible during inspection.

3. Assembly line benchmark, which refers to the position standard of parts during machining and manufacturing process. In the production process of CNC lathe, whether the selection of accurate positioning datum is effective or not makes strategic decisions on the quality of parts, whether it can ensure the precision of parts' models and specifications, the precision of parts' parts, and the distribution of production and processing sequence among parts' surfaces, often has great damage, The selection of accurate positioning datum will continue to damage the diversity of welding fixture structure. This requires that the welding fixture not only can shoulder the heavy tool durability, but also fully consider the precision requirements. Therefore, the selection of accurate positioning benchmark is a very important production process problem.

So how do you choose the accurate positioning datum when using CNC lathe to produce and process parts? The following is a simple and detailed description: the precise positioning of mechanical equipment manufacturing, production and processing, metal electrode and steel parts are essential. There is a precise positioning benchmark created, and the metal electrode takes its benchmark selection point, so that the deviation of metal electrode model and specification can be fairly and fairly distributed. According to the situation of steel parts, the benchmark function or Benchmark Industrial Park can be used. The specification for edge touching should be as smooth as possible, especially in many aspects of accurate positioning, so that the precision deviation of accurate positioning can be controlled at least.

4. The key to monitor the whole process of deep processing is to ensure the production and processing model specifications and production and processing performance indicators of steel parts. The cutting performance is high and the tool is durable. At this moment, it is important to pay attention to the damage of chip accumulation on the production and processing surface. For the production and processing of the die, it is also necessary to pay attention to the production and processing of the corner, cutting and cutting. For the treatment of the above problems, first, pay attention to adjust the automatic spraying part of the cutting oil, so that the production and processing surface is at the cooling circulating water standard at all times; Second, we should pay attention to the quality of the machined surface of the steel parts, and adjust the cutting performance to prevent the quality change as far as possible. If the adjustment still has no obvious expected goal, it should be shut down to check whether the original program is effective. It should be noted that in the final break inspection or shutdown inspection, pay attention to the position of the NC blade. If the NC blade is shut down in the whole milling process, the lathe spindle will stop suddenly, which will cause knife marks on the surface of steel parts. Generally, it should be considered that the machine is shut down when the NC blade is milling.

5. In order to ensure the precision of production and processing, rough and deep processing is best carried out by extraction. Due to the large amount of milling during the initial processing, the steel parts are subject to durable cutting tools, large clamping force and large calorific value, and the obvious strain hardening condition on the surface of production and processing. There is a large in-situ stress inside the steel parts. If the rough and initial processing continues, the precision of the parts after deep processing will be rapidly lacking due to the spread of the stress field again. For some parts with high precision. After the initial processing and before the deep processing, the ultra-low temperature quenching and tempering or cold processing process should be assigned to remove the in-situ stress