JB/T 4148-2017 in English

This standard specifies the methods for inspecting the accuracy of vertical drilling machines with cross worktables. It covers various aspects including geometric accuracy, positioning accuracy, and repeatability. The standard applies to the manufacturing and inspection processes of these machines, ensuring that they meet the required performance criteria. It outlines the conditions for inspection, the tools and equipment to be used, and the procedures to be followed. The standard also defines the acceptance criteria for different types of accuracy tests. This document serves as a reference for manufacturers, inspectors, and users to ensure consistency and quality in the production and use of vertical drilling machines with cross worktables.