The key points for selecting vertical machining center machine tools are as follows:

1. Processing requirements: First of all, the vertical machining center machine tool must clearly define the processing requirements, including the materials to be processed, the size of the workpiece, and the processing accuracy. Only by clarifying these needs can you choose a machine tool that better meets your needs.

2. Cost-effectiveness: When purchasing a vertical machining center machine tool, you should not only focus on the price but ignore the cost-effectiveness. You should choose a machine with a high price ratio, that is, the price of the selected machine should be reasonable, and the ratio between its performance and functions should reach a balance.

3. Brand and quality: Vertical machining center machine tools that choose machine tools with high brand awareness and good reputation will usually have better quality assurance. Before purchasing a vertical machining center machine tool, you can learn more about the products of some major brands and customer feedback.

4. Machine tool specifications and dimensions: The main specifications and dimensions of the vertical machining center machine tool should be adapted to the outline size of the workpiece to avoid using small machine tools for large workpieces or large machine tools for small workpieces, resulting in waste of resources or poor processing results.

5. Working accuracy: The working accuracy of the vertical machining center machine tool should match the processing requirements. For rough machining with lower precision requirements, you can choose a machine tool with lower precision; while for finishing machining, you need to choose a machine tool with higher precision.

6. Power and stiffness: The power and stiffness as well as the control range of the vertical machining center machine tool should be compatible with the nature of the process and appropriate cutting parameters. For rough machining that requires removal of larger allowances, the vertical machining center machine tool should have sufficient power and good rigidity.

7. Spindle unit and tool magazine: The spindle unit of a vertical machining center machine tool is the core component of the machine tool, and its performance directly affects the processing effect. The vertical machining center machine tool magazine is used to store tools, and its quantity and tool changing speed will affect the processing efficiency. Therefore, when choosing a machine tool, pay special attention to these two parts.

8. Maintenance and after-sales service: Consider the convenience of maintenance and after-sales service quality of the vertical machining center machine tool. A good after-sales service team can promptly solve problems that arise during the use of machine tools, reduce downtime, and minimize losses.

To sum up, when choosing a vertical machining center machine tool, you need to comprehensively consider processing needs, cost performance, brand and quality, machine tool specifications and dimensions, working accuracy, power and stiffness, spindle unit and tool magazine, maintenance and after-sales service, etc. aspects. Through comprehensive understanding and evaluation, you can choose the machine tool that best suits your needs.