From visual inspection to simple measurement to precise measurement, the progress of measurement technology guarantees the progress 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.
The person in charge of China Machine Tool Industry Association told the author that precision machining not only requires the accuracy and stability of machine tools, as well as the accuracy of tools and fixtures, but also requires precision measuring instruments to calibrate and measure. Some are in the process of processing (such as tool setting instrument); some are post-mortem detection (such as gear measuring instrument).
Industry experts revealed that, taking the wind power industry as an example, the processing and testing of some typical key components in power generation facilities, such as turbine blades, rotor wheel grooves, and steam turbine generator rotor insert wire grooves, represent and reflect to a certain extent. The latest achievements and level of a country’s excellent cutting technology and CNC tools, digital measurement technology and measuring instruments, so it has attracted the attention of the tool manufacturing industry.
It is gratifying that the domestic measuring instrument manufacturers have increased investment in the independent development of digital display technology and digital display measuring tool products in recent years, and have achieved great results. The domestic digital display measuring tools have developed from the simple strip-shaped liquid crystal digital display in the past few years to the more complex surface liquid crystal dynamic simulation image display. The resolution of the digital caliper capacitance grid has developed from 0.01 mm to 0.001 mm. have been significantly improved. The continuous improvement of waterproof and dustproof function (from IP54 to IP65, can now reach IP67), also enhances the market competitiveness of domestic digital measuring tools.
In the precision instrument debugging room of the National Precision Tool Engineering Research Center, the staff tapped a button, and the car gear fixed on a testing platform quickly turned. On the computer screen next to it, the numbers were beating rapidly. In just over 10 seconds, the measurement result is displayed, along with the measurement value and the allowable deviation value, which is clear at a glance. Chao Gang, deputy chief engineer of the research center, commented on this self-developed rapid detection and sorting machine: Due to the fast detection speed, high degree of automation, and low price, it can meet the requirements of automobile manufacturers to implement 100% rapid detection of gears. Guarantee the quality and safety of national automobiles. The facility fills the gap in the domestic automotive gear online testing and sorting technology field.
Precision machining and manufacturing not only requires the accuracy and stability of the machine tool and the accuracy of the tool and fixture to ensure, but also requires precision measuring instruments to calibrate and measure.
Gages at stake
Figuratively speaking, CNC tools are the teeth of CNC machine tools, and precision measuring instruments are the eyes of CNC machine tools. They promote each other and are closely related. Equipment and services promote the development of CNC manufacturing equipment, especially digital cutting technology. Xie Huakun, senior engineer and doctoral supervisor of Chengdu Tool Research Institute, made an analogy like this.
Relevant statistics show that after decades of construction and development, my country’s measuring tool industry has initially formed an industrial system with relatively complete product categories and a certain production scale and development capacity, becoming the second largest producer of tools in the world after Japan. However, as the basis of CNC cutting technology, there is still a big gap between my country’s tool manufacturing industry and foreign excellent levels in terms of technical level and functional quality of measuring instruments.