The CNC vertical lathe can adopt two different configurations of the front tool holder or the rear tool holder. Which tool post to use depends on the design of the CNC vertical lathe and the choice of the machine tool manufacturer.

1. Front tool holder: In the front tool holder configuration, the tool holder is located in front of the worktable, and the tool enters the processing area from the front. This configuration makes it easier for the tool to approach the workpiece, providing better cutting stability and machining results. The front tool post is suitable for some workpieces that need to be processed with deep, large diameter or complex shapes.
2. Rear tool holder: In the rear tool holder configuration, the tool holder is located behind the table, and the tool enters the processing area from the rear. The configuration of the rear tool holder makes the tool holder farther away from the workpiece, which is conducive to processing longer workpieces or workpieces that require smaller clearances. The rear tool holder can also provide a larger operating space, which is convenient for the installation and clamping of workpieces.

The choice of the configuration of the front tool holder or the rear tool holder is mainly determined according to the processing requirements and the characteristics of the workpiece. Different tool holder configurations may have differences in tool access, processing stability, processing range, and ease of operation. Therefore, when choosing to use a CNC vertical lathe, it is necessary to comprehensively consider the advantages and applicability of the tool holder configuration according to the specific processing requirements and actual conditions, so as to meet the processing needs.