Position analysis of cutting and measuring on CNC machine tools

In the precision instrument debugging room of the National Precision Tools Engineering Research Center, the staff clicked the button, and the car gear fixed on a detection platform quickly turned up. On the computer screen next to it, the number jumped rapidly. In just over 10 seconds, the measurement results are displayed, along with the measured value and the allowable deviation value, which makes it clear at a glance. Qi Gang, deputy chief engineer of the research center, commented on this self-developed rapid detection sorting machine: because of the fast detection speed, high degree of automation, and low price, it can meet the rapid detection of 100% of the gears of automobile manufacturers. Guarantee the quality and safety of the national car. This equipment fills the gap in the field of domestic automotive gear online detection and sorting technology. As a metaphor, CNC tools are the teeth of CNC machine tools, and precision measuring instruments are the eyes of CNC machine tools. They promote each Other, are closely related, equipment, services, and promote the development of CNC manufacturing equipment, especially digital cutting technology. The senior engineer and doctoral tutor of the Chengdu Tool Research Institute made such an analogy. As the basis of CNC cutting technology, China's tool manufacturing industry still has a big gap with the advanced level in foreign countries in terms of the technical level and performance quality of measuring instruments. Relevant statistics show that after decades of construction and development, China's measuring equipment industry has initially formed an industrial system with relatively complete product categories, a certain scale of production and development capabilities, and has become the second largest producer in the world except Japan. The country's output has a constant focus, from visual inspection to simple measurement to precision measurement. The advancement of measurement technology guarantees the advancement of manufacturing technology to a certain extent. The famous scientist Mr. Qian Xuesen also pointed out that information technology includes measurement technology, computer technology and communication technology. Measurement technology is the key and foundation. Precision machining not only requires the accuracy and stability of the machine tool, but also the accuracy of the tool and fixture. It also requires a precision measuring instrument to calibrate and measure. Some are in the process of processing; some are after-the-fact testing. Precision machining not only requires the accuracy and stability of the machine tool, but also the accuracy of the tool and fixture. It also requires a precision measuring instrument to calibrate and measure. According to industry experts, taking the wind power industry as an example, the processing and testing of some typical key components such as steam turbine blades, rotor wheel slots and turbine generator rotor weaving grooves in power generation equipment represent and reflect to some extent. A country's advanced cutting technology and the latest achievements and levels of CNC cutting tools, digital measuring technology and measuring instruments have attracted the attention of the tool manufacturing industry. It is gratifying to note that in recent years, domestic measuring instruments manufacturers have increased their investment in the independent development of digital display technology and digital display hardware products, and have achieved great results. Domestic digital display gauges have evolved from simple strip LCD digital display in previous years to more complex surface LCD dynamic simulation image display. The resolution of digital caliper capacitor grid has been improved from 0.01 mm to 0.001 mm. Measurement accuracy and reliability. There has been a significant improvement. The continuously improved waterproof and dustproof performance also enhances the market competitiveness of domestic digital display gauges. In the past 10 years, it has continuously strengthened its advantages in the development and manufacture of precision instruments such as gear measuring instruments, surface roughness measuring instruments and profilometers, and successfully developed the largest 2 m cnc gear measuring instrument in China, becoming the most competitive precision in China. Measuring instrument manufacturer. The dual-frequency laser interferometer is the core product independently developed by the center. Now only the center in China can have this technology to produce this equipment. Its successful development has changed China's long-term dependence on imports in this field. He just proudly said: The instrument's multiple functions have broken the foreign technology blockade, the detection resolution reaches 0.02 microns, and the detection length can reach 20 meters. The price is much lower than that of similar foreign products. In the international market, this instrument can compete with similar products in countries such as the United Kingdom and the United States! The director of the National Precision Tools Engineering Research Center and the director of the Chengdu Tool Research Institute said that so far, the center is The results of new tool materials, surface modification technology of tool materials, gear gauges, etc. have been at the leading level in China. Through unremitting efforts, we now have the most advanced precision tool production equipment with independent intellectual property rights in China, and established an industrialization base, which has enabled China's precision tools to achieve leap-forward development in terms of R&D, process equipment and industrialization capabilities. The results are close to or reach the world's advanced level.

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