With the gradual deepening of people's understanding of machining, many precision parts are processed by machining, and various problems will be encountered during machining. So what problems should be paid attention to in machining?

1. Roughing and finishing should be carried out separately, so as to better ensure the machining accuracy.

During rough machining, the cutting amount is large, the cutting force and clamping force on the workpiece are also large, and the heat generation is also large, the machined surface will have a relatively significant work hardening phenomenon, and there will also be large internal stress inside the workpiece. Machining is carried out continuously, then the accuracy of the finished part is affected by the redistribution of stress. For some workpieces with high machining accuracy, after rough machining, low temperature annealing or aging treatment should be performed to eliminate internal stress, and then finishing.

2. Select appropriate machining equipment for processing.

Rough machining is mainly to cut off the machining allowance of the large sub-section, and does not require high machining accuracy, so rough machining can be performed on machining equipment with high power and relatively low precision. Finishing is required to be performed on machining equipment with higher machining accuracy. Choosing different machining equipment for roughing and finishing can not only give full play to the equipment's capabilities, but also better extend the service life of the machine tool and improve the efficiency of machining.

3. Make a reasonable choice of machining process.

When planning the machining process, heat treatment is very important, and different heat treatment arrangements should be carried out for different machining processes. In order to improve the machinability of the metal before machining, heat treatment such as annealing, normalizing, quenching and tempering is required; in order to eliminate internal stress after rough machining, heat treatment such as aging treatment, quenching and tempering treatment is required; after machining, in order to improve the The mechanical properties of the workpiece require heat treatment such as carburizing, quenching, and tempering.

When machining, we should pay attention to the above problems, so that we can better perform machining, improve the quality of machining, and improve the efficiency of machining.