What should be paid attention to in precision parts machining and polishing operations

1、 Preliminary preparation

① Tool and material selection:

Precision parts processing selects appropriate polishing tools based on the material, shape, and size of the parts, such as sandpaper, grinding machines, polishing wheels, etc.

Choose the appropriate polishing agent, and the type and particle size of the polishing agent should be determined based on the surface roughness of the part and the polishing requirements.

② Parts inspection:

Before polishing precision parts, carefully inspect the surface of the parts for defects such as rust, scratches, burrs, etc., and perform necessary pre-treatment.

③ Environmental preparation:

Ensure that the polishing environment is clean and dust-free, avoiding the impact of pollutants such as dust and smoke on the surface of the parts. For parts with extremely high precision requirements, polishing should be carried out in a dust-free or absolutely clean space.

2、 Polishing process

① Rough polishing:

The main purpose is to remove burrs, oxide layers, and rough parts on the surface of the parts.

Using mechanical polishing methods such as sandpaper polishing, grinding machines, etc., pay attention to controlling the polishing force and speed to avoid damage to the parts.

② Intermediate polishing:

Further smooth the surface of the parts and remove any traces left after rough polishing.

Chemical polishing methods such as electrolytic polishing, acid washing, etc. can be used, but attention should be paid to controlling the polishing time and temperature to avoid excessive polishing causing damage to the surface of the parts.

③ Fine polishing:

Make the surface of the parts smoother, achieving the expected accuracy and roughness.

Using optical polishing methods such as ultrasonic polishing, magnetic grinding, etc., pay attention to controlling the polishing accuracy and efficiency to ensure the surface quality of the parts.

3、 Operation skills

① Prevent scratches:

The surface of precision parts is usually fragile and easily scratched or bumped. During the polishing process, care should be taken to avoid using overly rough tools or techniques.

When storing and transporting precision parts, appropriate protective measures, such as foam pad and soft paper, shall be used to ensure that the surface of parts will not be scratched or bruised.

② Regular maintenance:

The tools and materials used in the polishing process of precision parts machining may wear or age, so regular maintenance and replacement of these tools and materials are necessary.

Regularly inspect the performance and quality of tools and materials, and promptly address and replace any issues.

③ Grasp the details:

The size and accuracy of precision parts are usually relatively small, so great attention to detail is required during the polishing process.

When selecting a polishing agent, it is important to choose the appropriate one based on the properties of the component material and the principles of selecting the polishing agent.

When dealing with details, it is necessary to strike a balance between accuracy and efficiency to avoid surface damage caused by excessive processing.

4、 Subsequent processing

① Cleaning and maintenance:

After polishing, the parts should be thoroughly cleaned to remove surface polishing agents and residues.

Apply rust proof oil or take other maintenance measures on the surface of the parts to extend their service life.

② Quality inspection:

Precision parts processing conducts quality inspections on polished parts to ensure that surface smoothness, roughness, and accuracy meet the requirements.

If necessary, rework or re polishing can be carried out.