The precision development of CNC machine tools

The hardware measuring instrument plays a decisive role. In the precision instrument debugging of the National Precision Tool Engineering Research Center, the staff taps the button, and the automotive gear fixed on a detection platform quickly turns up. On the computer screen next to it, the numbers jump quickly. In just over 10 seconds, the measurement results are displayed, along with measurement values ​​and allowable deviation values, making it clear at a glance. The deputy chief engineer of the research center Yu Gang just commented on this self-developed rapid detection sorter: “Because of the high detection speed, high degree of automation, and low price, it has met the needs of auto manufacturers to achieve 100% rapid detection of gears. This guarantees the quality and safety of the national automobile. The equipment fills the gap in the domestic automotive gear online detection and sorting technology field."

"Imagery metaphor, CNC tool is the teeth of CNC machine tools, precision measurement instruments are the eyes of CNC machine tools. They are mutually reinforcing and closely related to equipment, services, and promote the development of CNC manufacturing equipment, especially digital cutting technology." Chengdu tool research The senior engineer and doctoral tutor used this analogy. As the basis of CNC cutting technology, China's tool manufacturing industry still has a big gap with foreign advanced level in terms of technical level and performance quality of measuring instruments. Relevant statistics show that after decades of construction and development, China's measuring tool industry has initially formed an industrial system with relatively complete product categories, a certain production scale and development capability, and has become the world's second-largest producer nation with Japan.

Domestic metal measuring tools have bright spots. From visual measurement to simple measurement to precision measurement, advances in measurement technology have ensured advancements in manufacturing technology. The famous scientist Mr. Qian Xuesen also pointed out: "Information technology includes measurement technology, computer technology and communication technology. Measurement technology is the key and foundation."

Precision machining requires not only the precision and stability of the machine tool, but also the accuracy of the tools and fixtures. It also requires precision measuring instruments to calibrate and measure. "Some are in the process of processing; some are detected afterwards." Precision machining requires not only the precision and stability of the machine tool, but also the precision of the tools and fixtures. It also requires precision measuring instruments to calibrate and measure. According to industry experts, taking the wind power industry as an example, the machining and testing of typical components such as steam turbine blades, rotor wheel slots, and turbine rotor rotor slots in power generation equipment have been represented and reflected to some extent. The state-of-the-art cutting technology and the latest achievements and levels of CNC cutting tools, digital measurement technologies and measuring instruments have attracted the attention of the tool manufacturing industry. It is gratifying that the domestic hardware measuring instrument manufacturers have increased their investment in digital display technology and digital display hardware product development in recent years, and have achieved great results. Domestic digital display tools have evolved from the simple bar LCD digital display of previous years to the more complex image display of surface dynamic liquid crystal dynamic simulation. The resolution of the digital video scale grid has been developed from 0.01 millimeter to 0.001 millimeter, and the accuracy and reliability of measurement have been improved. Have a significant increase. The continuous improvement of waterproof and dustproof performance also enhances the market competitiveness of domestic digital display gauges. In the past 10 years, we have continuously strengthened our strengths in the development and manufacturing of precision instruments such as gear measuring instruments, surface roughness measuring instruments and contour measuring instruments. We have successfully developed the largest 2m CNC gear measuring instrument in China and become the most competitive precision in China. Measuring instrument manufacturer.

The "double-frequency laser interferometer" is a core product independently developed by the center. Now only this center has the technology to produce this equipment. Its successful development has changed China's long-term dependence on imports in this field. He just said proudly: "The instrument's multiple functions have broken the foreign technology blockade, detection resolution of 0.02 microns, detection length of up to 20 meters. The price is much lower than similar foreign products, in the international, this instrument can be With the United States and the United States and other countries in the same product level!” Director of National Precision Tool Engineering Research Center, Chengdu Tool Research Institute, said that so far, the center in the new tool materials, tool material surface modification process, gear measuring instrument, etc. The results have been at the leading domestic level. Through unremitting efforts, it has now possessed the most advanced production equipment for precision tools with independent intellectual property rights and established an industrialization base, which has enabled China's precision tools to achieve leap-forward development in terms of research and development, technological equipment and industrialization capabilities. The results have reached or reached the world advanced level.