The purchase principles of vertical machining centres are as follows:
A. Stability and reliability. If the vertical machining centre you choose cannot work steadily and reliably, it will completely lose its meaning. Therefore, when purchasing, you must try to choose famous brand products (including the mainframe, control system and accessories), because these products are technically mature, have a certain production batch, and have been used normally among users.
B. Practicality. The purpose of purchasing a vertical machining centre is to solve one or more problems in production. Practicality is to enable the selected machining centre to finally achieve the predetermined goal to the best extent. Be careful not to exchange the complex machining centre with too many functions and impractical at a high cost.
C. Economical. Only when you have a clear goal and a targeted choice of machine tools can you get the best results with reasonable investment. Economicality means that the selected machining centre pays the lowest or most economical cost under the condition of meeting the processing requirements.
D. Operability. Choose a fully functional and advanced one. If there is no suitable person to operate or program, and there is no skilled maintenance worker to maintain and repair, no matter how good the machine tool is, it is impossible to use it well and it will not play its due role. Therefore, when choosing a machining centre, you should consider whether it is convenient to operate, program and maintain. Otherwise, it will not only bring difficulties to the use, maintenance, maintenance and repair of the machining centre, but also cause waste of equipment.
E. I shop around. Strengthen market research, conduct technical consultation with users who understand the department of the machining centre or use the experience of the machining centre, and have a comprehensive understanding of the market situation of the machining centre at home and abroad as much as possible. We should make full use of various exhibitions to choose equipment with high quality and low price and reliable performance, and strive to shop around. Be sure to choose mature and stable products according to the actual needs of the unit.
Issues to pay attention to when choosing a vertical machining centre
A. Reasonably determine the function of the machining centre. When choosing the function of the machining centre, it should not be large and complete, because if the excessive pursuit of the number of coordinate axes of the machining centre, the large power of the working surface and the motor, the higher the processing accuracy, and the complete the function, the more complex the system, the lower the reliability. Purchase and maintenance costs will also increase. In this regard, the processing cost will increase accordingly. On the other hand, it will cause a great waste of resources. Therefore, the machining centre should be selected according to the specifications, size, accuracy, etc. of the product.
B. Determine the parts being processed. The machining centre should be reasonably selected according to the typical parts processed according to the needs. Although the machining centre has the characteristics of high flexibility and strong adaptability, the best effect can only be achieved by processing certain parts under certain conditions. Therefore, before determining the purchase of equipment, we must first determine the typical parts to be processed.
C. Reasonable choice of numerical control system. The numerical control system that can meet the requirements of various performance parameters and reliability indicators should be considered in detail, and the convenience of operation, programming, maintenance and management should be considered. Try to be centralised and unified. If it is not a special case, try to choose the same series of numerical control systems that the unit is familiar with and produced by the same manufacturer for future management and maintenance.
D. Configure necessary accessories and knives. In order to give full play to the role of the machining centre and enhance its processing capacity, necessary accessories and tools must be configured. Don't spend hundreds of thousands of yuan or millions of yuan to buy a machine tool, which cannot be used normally due to the lack of an accessory or tool worth dozens of yuan. When purchasing the mainframe, buy some wearing parts and other accessories. Foreign metal cutting experts believe that the efficiency of a machining centre worth $250,000 depends to a large extent on the performance of an end mill worth $30. It can be seen that the machining centre is equipped with tools with good performance. It is one of the key measures to reduce costs and maximise comprehensive economic benefits. Generally, the machining centre should be equipped with enough tools to give full play to the function of the machining centre, so that the selected machining centre can process multiple product varieties and prevent unnecessary idleness and waste.
E. Pay attention to the installation, commissioning and acceptance of the machining centre. After entering the factory, the processing centre should be carefully installed and debugged, which is very important for future operation, maintenance and management. During the installation, commissioning and trial operation of the processing centre, technicians must actively participate, study carefully, and humbly receive technical training and on-site guidance from suppliers. Comprehensive acceptance of the geometric accuracy, positioning accuracy, cutting accuracy, machine tool performance and other aspects of the machining centre. Carefully check and keep various supporting technical materials, user manuals, maintenance manuals, accessory manuals, computer software and instructions, etc., and keep them properly, otherwise some additional functions will not be developed in the future and bring difficulties to the maintenance and maintenance of machine tools.
Finally, we should fully consider the after-sales service, technical support, personnel training, data support, software support, installation and commissioning, spare parts supply, tool system and machine tool accessories of the manufacturer of the vertical machining centre.