Measurement technology is usually based on the machine tool and the use of measurement tools such as tool setting probes, machine probes, 3D software, and so on. In the machining of the workpiece, to take the appropriate means to measure the specific geometric characteristics of the machine tool, and on this basis, according to the results of the inspection for subsequent improvement. This means used in CNC machining, can effectively eliminate many unnecessary links, in the actual application process, the staff should be deeply aware of and understand the specific characteristics of CNC machining centers, so as to achieve efficient in-machine measurement purposes.
1. CNC machining in the machine measurement technology application advantages
1.1 Improve the manufacturing quality of machining
In the past, the machining production process is often susceptible to a variety of factors, of which the role of man is particularly obvious, often due to human error or improper operation caused by the loss of quality problems. At the same time, the use of CNC machining technology can be better avoided by a certain impact, is conducive to ensuring the production quality of machine tools. The application of CNC machining technology can significantly improve the level of automation of machining manufacturing, because the process does not require human operation, so it can be well avoided by human error caused by the operation of quality problems. In addition, the use of CNC machining technology to enhance the precision of machine tools, to improve the quality of machine tools has an important role.
1.2 Enhance the efficiency of machine tool processing
Usually, machining needs through a series of processes to achieve high quality and high standard of product requirements, because the process is more complex and requires a longer time, so with the conventional process to complete a lot of time will be wasted, the processing efficiency in this case is not high. In the whole process, the machine tool plays a key role, only to effectively improve the efficiency of the process, and strengthen the control of the machine tool, in order to fundamentally improve the efficiency of the process. The use of CNC technology can help machine tools and equipment to complete machining at high speed, precision, and one-time completion of rough milling, fine milling, polishing and other related processes, and the processing process does not produce much heat, which not only improves productivity, but also reduces production costs.
1.3 Enhance machining precision
Compared with the traditional machining technology, the use of CNC technology can to a certain extent improve the accuracy of processing, such as the use of electrochemical reaction, remove a large number of metals on the mold, while avoiding the traditional technology caused by temperature changes in the flying edge, cracks, residual stress and other issues. The use of CNC technology is not affected by human factors and precise control of time, so the entire system will be in accordance with the set procedures for the process of processing, through this precise system of machining made of mold surface roughness will be greatly reduced, and thus smoother. Therefore, the use of CNC technology in machine tools will greatly improve the accuracy and quality of machine tools.
1.4 Reduction of tool wear
Cutting cemented carbide by the traditional method will cause great damage to the tools during the cutting process because of the high hardness tools used. In the use of CNC machining technology, the processing will not appear more serious problems, and can reduce the wear and tear of the tool to prevent damage to the tool.
2. In-machine measurement technology application characteristics
Measurement of the workpiece, the use of probe positioning of the tool to improve the accuracy of mass production products. The probe is used to monitor whether the process parameters are in place, to ensure that the size meets the requirements, and to improve the accuracy of the products. The tool size and cutting edge diameter are calculated manually, and the tool instrument is used to measure the new workpiece and automatically generate information to improve machining accuracy.
3. CNC machining in the application of in-machine measurement technology
3.1 Application in precision measurement
In the use of more conventional processing methods for processing, it takes a long time to measure the time, and it is inevitable that there will be deviations in production, so in the actual work stage, it should be used in the precision measurement in the machine measurement technology, and the technology will be applied to the product after the finishing technology, and then test the accuracy of the relevant products. For example, in the measurement of product length, width and other related dimensions, usually, the first two sides of the length and width of the distance to be measured, and set the corresponding measurement points, and then integrate the measured data, when fitted to become two straight lines, and then measure the distance between the two lines, so as to get the final results of the measurement. In the specific work process, the staff should operate in strict accordance with the required specifications and procedures, and after determining the initialized variables, carry out the work using the indicators of the probe signal.
3.2 Design of contour compensation program
In the process of designing the contour compensation program, we should seek the support of the system in the CNC technology to ensure that the test is targeted, although other machine tools can also be simulated, but the code is often too complex for the specific work of different products, the staff need to carry out complex programming, and then complete the
3.3 Nanometer Displacement Measurement Technology
From an international perspective, the millimicron is the most basic size measurement unit, and the micrometer deformation detection technology in millimeters is a cutting-edge technology. In the process of CNC machining, the use of nano-displacement measurement technology can distinguish the displacement and velocity generated in the production process, and then carry out microscopic measurement of the measurement object. Displacement detection technology at the nanoscale is based on dual-frequency laser, which resolves the microfine regions in the interference fringes and helps to improve the detection accuracy. In addition, the integration of nano-displacement technology in the process of CNC machining can reduce the probability of tiny errors in machinery and provide an all-round measurement of machinery, thus achieving ideal production results. This testing method is relatively advanced, but the requirements for testing conditions are very high; not only that, in the field of nano-movement technology, due to the current cognition of nano-materials and equipment is not thorough enough, the application and design of blindness, so there is an urgent need to carry out further exploration as a way to enhance its impact.
3.4 Laser Measurement Technology
In people’s production life, the use of laser is more and more frequent, laser measurement technology is a high-precision, wide-range, high-accuracy non-contact measurement technology. The laser measurement technology can be applied to CNC machine tools to measure welding, punching, cutting and other processes. The laser as an excited light source amplification phenomenon, the use of orthogonally polarized laser as a means of measurement, in the range, linearity, accuracy, etc. than the conventional means of detection is more advantageous, can effectively reduce the detection error, improve the detection accuracy. In addition, with the help of laser-made measuring instruments, including laser scanner, laser inspection instrument, laser rangefinder, etc., when measuring mechanical parts, it can reduce the risks encountered by the measuring personnel under the premise of controlling the accuracy, mitigate the damage suffered by the direct contact with the object, so as to protect the safety of the staff and the object to be measured.
3.5 Application in multi-axis machining
In the multi-axis cutting process, CNC technology is mainly used in multi-axis CNC machine tools. The quality of products manufactured by multi-axis CNC machine tools is better, stronger and more accurate, mainly because the machine tool will efficiently calculate the data before running the program, so as to ensure the correctness of the program. The machine has a short machining cycle, which saves more time and facilitates production and management, and it can reduce the number of molds and fixtures used, expand the working area, reduce the datum conversion rate, and improve the machining accuracy. As for the traditional cutting processing, multi-axis CNC can realize multi-surface clamping, which can greatly shorten the processing cycle and improve the processing efficiency. However, this technology requires professional technical support, and the operator must also prepare cumbersome programs to ensure that each operation step meets the requirements in order to ensure the safety of the operation.
3.6 Application in the automobile industry
In the past, many enterprises usually pay more attention to the economic benefits of the enterprise itself and the improvement of the production scale, but with the improvement of the national standard of living, people also put forward higher requirements for the quality and performance of vehicles. In this regard, enterprises want to meet the requirements of customers, we must continue to improve their own production processes, in order to ensure that the basic performance of the car at the same time, but also should continue to improve the production accuracy of the various parts of the car. In this context, the integration of CNC technology into the automotive industry can make it better development. In fact, CNC machining technology provides a strong support for automobile manufacturing, which can ensure the precision of automobile parts manufacturing and greatly improve the production efficiency of automobiles. For example, in the connecting rod cylinder and piston crankshaft and other automotive parts production and processing process, because of the high precision requirements of these parts, so the ordinary processing technology is unable to meet the basic production requirements, at this time, with the help of CNC machining technology automation advantages, will be able to significantly improve the production accuracy. CNC machining technology can also be applied to stamping, welding, spraying and other automotive manufacturing process, in order to effectively improve the quality of the manufacturing process efficiency. Not only that, with the development of science and technology, CNC machining technology in the automotive industry is a large number of uses, which can replace the manual labor to complete some high-risk work, so as to enhance the safety level of the automotive industry.
3.7 Application in aerospace and aviation
In fact, on this basis, the research and development of CNC machining technology is of great significance. Especially under the premise of high requirements for precision, the importance of CNC machining technology is more significant. The materials used in aerospace equipment and instruments are relatively lightweight metals, such as titanium alloys and aluminum alloys, etc. The weight of these metals is relatively small, but it is difficult to manufacture them, and when they are subjected to cutting and processing, it is very easy to cause deformation of the parts, which affects the machining accuracy of the parts. In order to solve this problem, CNC machining technology must be used to realize the precision machining of aerospace equipment. In recent years, in the production stage of aerospace equipment, not only used more and more CNC processing technology, but also artificial neural network technology and fuzzy control technology, etc. Organic fusion, in a variety of advanced technology, continued to improve the processing accuracy of aerospace equipment, so as to provide a strong guarantee for the development of the country’s aerospace industry.
3.8 Precision Measurement
At the present stage of precision measurement, in-machine measurement technology has been applied more and more. For the traditional process, its detection takes quite a long time, and in the process of detection, it is easy to produce a certain deviation, so in the process of carrying out the detection project, it is necessary to pay attention to the application of in-machine detection methods, with the help of the scientific nature and reliability of the detection process, and after the completion of the product’s finishing, the use of in-machine detection methods to assess the accuracy of product quality. And when calculating the actual length and width dimensions, the general method used is to determine the test points of each side on both sides between the calculated width position and the actual length distance, combine them with the data in the system, and then fit them into two straight lines, and finally measure the spatial distance between the two straight lines. Therefore, the staff should strictly comply with the normative standards and requirements, from the actual situation of the initialization variables, according to the probe signal indicators to complete the corresponding work.
4. CNC machining in the machine measurement technology development trend
With the continuous development of science and technology, the level of automation and intelligence is getting higher and higher, and so is the CNC machining technology. The current application of CNC technology to improve the efficiency and quality of machining, so that the processed products have high precision and high quality, precision machining accuracy can also reach the nanometer level, prompting the product in the market has a stronger competitiveness. In the future, CNC machining technology should be developed in a more intelligent direction, with the continuous popularization and application of the network, the programming of the relevant equipment will become simpler, and even automated programming; there is also the possibility of intelligent detection of faults, rapid problem solving, thereby improving the efficiency of the machine tool. In short, CNC technology will inevitably develop in the direction of meeting people’s requirements, the future of CNC technology will become more efficient and high-precision, and has a stronger intelligent and automated functions.
5. Conclusion
In summary, the use of in-machine measurement technology in the process of CNC machining can improve the overall accuracy of CNC machining in a wider range, which helps to continuously improve the level of CNC machining technology. In the actual application process, the staff should ensure the standardization and standardization of their own operation, understand the specific requirements of the relevant work, reasonably select the in-machine measurement technology, and in the application of this technology, to ensure that the process of reasonableness and standardization, so as to make CNC machining to achieve better results.