The VDI standard is a standard developed by the Verein Deutscher Ingenieure (VDI?).
The VDI standard is one of several. Accuracy, for example, is the ability of a machine tool to position the tip of a tool to a programmed target point. However, there are many ways to measure this positioning ability, and more importantly, different countries have different regulations.
1, Japanese machine tool manufacturers calibrate "accuracy", usually using JISB6201 or JISB6336 or JISB6338 standards. JISB6201 is generally used for general-purpose machine tools and ordinary CNC machine tools, JISB6336 is generally used for machining centers, JISB6338 is generally used for vertical machining centers. JISB6336 is generally used for machining centers, and JISB6338 is generally used for vertical machining centers.
2. European machine tool manufacturers, especially German manufacturers, generally use the VDI/DGQ3441 standard.
3, the U.S. machine tool manufacturers usually use the NMTBA standard (the standard originated from a study of the American Machine Tool Builders Association, promulgated in 1968, and later modified).
Expanded Information:
The VDI is a public-interest, independent organization of engineers and scientists, separate from the economic and political parties, founded in 1856 to engage in the development, supervision, standardization, work study, protection of rights, and patenting of technology. VDI's central mission is to promote the integration of all aspects of technology and to improve the human condition through the development and effective application of technological means.
The VDI also undertakes the training of engineers, continuing education, and advises governments, parliaments and society. The association has added technology transfer to its portfolio.
Baidu Encyclopedia - Institut der Deutschen Ingenieur (German Institution of Engineers)