In the process of machining precision mechanical parts, the precision of parts has a great relationship with the process. What are the specific effects? In this chapter, we mainly discuss the influence of numerical control programming and geometric accuracy. Precise hardware processing cannot be separated from numerical control machine tools. Operators need to use numerical control programming to control the machine tools. Therefore, numerical control programming is particularly important and has a great influence on the precision of parts processing. It is mainly reflected in the following aspects.
First of all, NC programming should determine the origin of programming. Whether the selection of the origin is appropriate affects the precision of precision hardware processing, which can avoid processing errors caused by size conversion. Secondly, the operator needs to do a good job of data processing in the programming system, which affects the accuracy of the contour track of precision parts. In addition, the node calculation of programming should be done well in this link, and then the correct processing route should be selected. Finally, the operator should choose an appropriate interpolation method to reduce the dislocation and movement of the machine tool when the number of pairs reaches a certain level, thus affecting the precision of precision hardware processing.
In the process of parts processing, some work is manually completed by operators, such as cutting and grinding. This piece will inevitably have a certain degree of deviation, which will lead to geometric accuracy errors when machining precision mechanical parts. The accuracy of the tool will affect the accuracy of the part. When the tool is cutting, the tool face and blade will rub with the part. Over time, the tool will be worn to a certain extent. When the wear area is large, the friction value between the tool and the part will increase, and the vibration amplitude of the tool in the cutting work will increase, leading to changes in the cutting shape of precision hardware processing parts.
In order to solve this problem, technicians need to improve the wear resistance and installation accuracy of tools. In the daily use process, strengthen the maintenance and repair of the cutter, and use the compensation device to compensate the worn parts. In addition, the machine tool is in a state of continuous operation during the processing of precision mechanical parts, and the spindle will have rotation errors in the long-term operation. When the spindle deviates from the standard axis, the relative position of the part processing will change, which will affect the flatness of the part surface, causing errors in the part accuracy. In order to solve the above problems, the operator should strictly implement the installation of the spindle of the machine tool, maintain the spindle in time during daily processing, and adjust its running position regularly.