What details can we not ignore in the processing of precision mechanical parts?

What details can we not ignore in the processing of precision mechanical parts?

In precision mechanical parts processing, the machine is turn fast, if suddenly found missing a link, the machinery and equipment suddenly suspended or may affect the quality of machining, so parts in the time of precision processing, due to the processing process and precision, so, in the precision mechanical parts processing has many details is we can't ignore, the micro extension small make up to popularize.

Separate the fine and rough machining of the parts to avoid affecting the precision

When the parts need to be accurately processed, rough machining due to the large cutting amount, the workpiece by a large cutting force and clamping force, produce a lot of heat, the processing surface has obvious processing hardening phenomenon, there is a large internal stress inside the workpiece. If rough machining continues, the refined parts will lose precision due to stress redistribution. For some parts with high processing precision, low temperature annealing and aging treatment should be arranged before rough finishing to eliminate internal stress.

2, choose the appropriate processing machinery and equipment

Rough machining is mainly to cut off most of the processing margin, does not require a higher processing accuracy, so rough machining should be carried out in the power, precision is not too high machine tool, the finishing process requires a relatively high precision machine tool processing. Crude and finishing machining are processed on different machine tools, which can not only give full play to the equipment capacity, but also extend the service life of precision machine tools.

3, the heat treatment process is required in the processing route

The heat treatment process arrangement is as follows: in order to improve the cutting performance of the metal, such as annealing, normal ignition, quality adjustment, etc., it is generally arranged before processing. In order to eliminate internal stress, such as aging treatment, quality adjustment treatment, etc., generally arranged after rough processing, before finishing. In order to improve the mechanical properties of the parts, such as carburization, quenching, tempering, etc., are generally arranged after machining. If there is a large deformation after heat treatment, the final processing process should be arranged.

Details to pay attention in precision machining

1, in order to facilitate processing operation, reduce the walking back and forth, reduce or avoid the processing personnel bending and foot action.

2, the processing parts should be positioned accurately, to prevent the vibration from affecting the production operation, to avoid misoperation.

3，The direction of movement of the working parts and the direction of the working parts shall meet the requirements and have simple symbols. The structure and layout of the handle, hand wheel and push button shall meet the requirements.

4. The start button shall be installed in the shell with the protection ring to prevent accidental contact. The hand wheel and handle installed on the shaft will rotate with the shaft when the automatic feeding, so the automatic release device should be installed.

low pressure casting