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CNC machine tool installation and debugging

Time:2021-09-23 Views:183


 CNC machine tools are the basic equipment of modern manufacturing technology. With the wide application and popularization of CNC machine tools, more and more attention has been paid to the acceptance of machine tools. However, many users still have deviations in the acceptance of CNC machine tools. The main purpose of the new machine inspection is to determine whether the machine tool meets its technical specifications, and to determine whether the machine tool can accurately process parts in accordance with the predetermined target. In many cases, the acceptance of a new machine is to determine whether the machine tool can pass the acceptance by processing a representative typical part. When the machine tool is used to process a certain kind of parts. This acceptance method is acceptable. But for more versatile CNC machine tools, this inspection method for cutting parts obviously cannot provide enough information to accurately determine the overall accuracy of the machine tool. Only by inspecting the geometric accuracy and position accuracy of the machine tool can the manufacturing accuracy of the machine tool itself be reflected. On the basis of these two accuracy inspections, the parts processing inspection is carried out to evaluate the processing performance of the machine tool. For new machines placed on the production line, it is also necessary to evaluate the working ability of the machine tools through the assessment of process capability and production cycle. However, in the actual inspection work. There are often many users who neglect the inspection of the accuracy of the machine tool during the acceptance of the new machine. They think that the new machine has been inspected before leaving the factory. It is only necessary to adjust the level of the machine tool for installation at the use site, as long as the trial-machined parts pass the inspection. It is considered that the machine tool passed the acceptance. These users often overlook the following issues:

1. The new machine arrives at the site through the transportation link. Due to the vibration and deformation during transportation, its level reference is completely different from the state at the time of factory inspection. At this time, the geometric accuracy of the machine tool deviates from the accuracy of the factory inspection.

2. Even if the impact of the transportation link is not taken into account, the adjustment of the level of the machine tool will have an impact on the related geometric accuracy items.

3. Since the position accuracy detection components such as encoders, gratings, etc. are directly installed on the screw and bed of the machine tool, the adjustment of the geometric accuracy will have a certain impact on it.

4. The position accuracy deviation obtained by the inspection can also be adjusted in time directly through the error compensation software of the CNC machine tool to improve the position accuracy of the machine tool.

5. Changes in external conditions such as air pressure, temperature and humidity will also affect the position accuracy.

6. The position accuracy deviation obtained by the inspection can also be adjusted in time directly through the error compensation software of the CNC machine tool to improve the position accuracy of the machine tool.

When inspecting a new machine tool, it is far from enough to judge the overall quality of the machine tool by assessing the accuracy of the trial-machined parts. It is far from enough to use this as the only criterion for acceptance. The geometric accuracy, position accuracy and working accuracy of the machine tool must be comprehensively inspected. , Only in this way can the working performance of the machine tool be guaranteed, otherwise it will affect the installation and use of the equipment and cause greater economic losses.

After the CNC machine tool arrives at the user's side and the initial commissioning, test and acceptance work is completed, it does not mean that the commissioning work is completely over. In actual production enterprises, such equipment management methods are often used: After installation and commissioning are completed, the equipment is put into production and processing, and only when the processing accuracy of the equipment does not meet the initial requirements, will the work be stopped for corresponding debugging. In this way, many companies cannot accept the loss of such shutdowns, so in daily work, they can also solve this problem according to the method of "six degrees of freedom measurement rapid machine tool error evaluation", which greatly reduces the test time, so that small workshops can also control the processing process in advance , And ultimately lead to zero failure and less reliance on post-inspection.

The rapid machine tool error evaluation method for six-degree-of-freedom measurement is that after the measurement system is installed and debugged once, the error values of six CNC machine tool accuracy items can be measured at the same time. Compared with the traditional single-precision item measurement method, it can greatly shorten the installation and adjustment of the instrument. Detection time.


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