What will be the impact of incorrect CNC precision machining process?

What is the impact of improper CNC precision machining process?

The use of CNC precision machining equipment for processing has high efficiency and good quality, but if the process design is not handled properly, it will directly affect the output and even affect the quality and other problems. Today, the editor will tell you about the technical problems:

1. The cnc processing process is too scattered

The reason for this problem is the fear of complexity (referring to the preparation time), The programming is simple, the operation and processing are simplified, and the tool setting is easy to adjust with one tool, and it is used to ordinary processing. As a result, the product quality (position tolerance) is not easy to guarantee, and the production efficiency cannot be played well. Therefore, CNC machining technicians and operators should be fully familiar with the knowledge of CNC machining, try more to master the relevant knowledge, and use the method of process concentration as much as possible to process, and use it several times, which will naturally reflect its advantages. After the process is centralized, the unit processing time increases. We arrange the two equipment face to face, so that one person can operate two equipment, the efficiency is greatly improved, and the quality is also well guaranteed.

2.cnc machining sequence is unreasonable

Some cnc machining operators often arrange the machining sequence extremely unreasonably considering some problems in preparation . CNC machining is usually processed according to the requirements of general machining process preparation, such as first coarse and then fine (tool change), first inside and then outside, reasonable selection of cutting parameters, etc., so that the quality and efficiency can be improved.

Use G00 (G26, G27, G29) fast positioning command carefully G00 command brings great convenience to programming and use. However, if it is set and used improperly, it will often cause adverse consequences such as overshoot when returning to zero, decreased accuracy, and strain on the guide rail surface of the equipment due to the excessive speed setting. If the return-to-zero route is not careful, it is easy to cause safety accidents that collide with workpieces and equipment. Therefore, when considering the use of G00 command, it should be considered carefully and not arbitrarily.

In NC machining, special attention should be paid to strengthening program retrieval and trial operation. After the program is input into the control system, the operator should use the SCH key and the ↑, ↓, ←, → movement keys to search for uncertainty and determination, and modify the program if necessary to ensure the accuracy of the program. At the same time, before the formal execution of the program processing, the program test run (turn on the power amplifier) u200bu200bmust be carried out to confirm whether the processing route is consistent with the design route.

What are the material requirements of CNC precision machining factories?

The materials for precision parts processing are divided into two categories, metal materials and non-metal materials. For metal materials, the hardness is stainless steel, followed by cast iron, copper, and aluminum. The processing of ceramics, plastics, etc. belongs to the processing of non-metallic materials.

1. It is the requirement for the hardness of the material. For some occasions, the higher the hardness of the material, the better, but it is limited to the hardness requirements of the machined parts. The material to be machined should not be too hard. Hardly impossible to process.

2. Secondly, the material should be moderately soft and hard, at least one grade lower than the hardness of the machine parts. At the same time, it also depends on the function of the machined parts and the reasonable selection of materials for the parts.

3. There are still some material requirements for precision parts processing, not all materials are suitable for processing, such as too soft or too hard materials, the former is not necessary for processing, while the latter is impossible. processing. Therefore, the basic one is that you must pay attention to the density of the material before processing. If the density is too high, it is equivalent to a high hardness, and if the hardness exceeds the hardness of the machine (lathe turning tool), it cannot be processed, not only Parts will be damaged and dangerous.

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