Summary of machining knowledge, these must be mastered

In the process of mechanical processing, we will encounter various problems. What should we do when facing this kind of thing? I believe that many people who do mechanical work will have such troubles. Let me introduce you some knowledge points in this regard, I hope to help you.

1. Benchmark

Parts are composed of many things, but these surfaces have corresponding size requirements. There are certain requirements for the surface distance of the part, and it is very important to control its dimensional accuracy. When the relative position of its surface is studied, the benchmark is indispensable. If the benchmark is not clear, the parts made cannot meet the relevant requirements.

However, benchmarks are usually divided into two categories, design benchmarks and process benchmarks, according to their different roles.

2. How to install the workpiece

In the process of machining, the workpiece needs to be positioned so that the processed product can be more accurate. At the same time, attention should be paid to the installation of the workpiece, because the quality of the installation directly affects the processing accuracy, the speed and stability of the installation of the workpiece, and directly affects the level of productivity. Therefore, when machining, the position of the machining surface design datum relative to the machine tool must be correct. For example, it is necessary to ensure that the datum coincides with the machine tool spindle during installation.

For different machine tools, its installation method is also different, but in general it can be summarized as direct alignment method, cross-line alignment method and fixture installation method. When installing, it is necessary to select the appropriate method in combination with the specific machine tool, so that the installation can be carried out in the fastest and accurate way, but many people ignore this, which leads to the consumption of too much time and energy in the installation process.