What are the definitions of mechanical parts? Which belong to mechanical parts? What are the corresponding castings and forgings?
The definition of mechanical parts is:
1, parts--individuals that cannot be split Components.
2, components-a combination of parts to achieve a certain action (or: function). A component can be a part or a combination of multiple parts. In this assembly, one part is the main one, which realizes the predetermined action (or: function), and the other parts only play an auxiliary role such as connection, fastening, and guidance.
3. Parts--Under normal circumstances, all parts and components except the frame are collectively called parts. Of course, the rack is also a component.
As for castings and forgings, it is a classification of parts manufacturing methods. Different materials and manufacturing methods make parts have different mechanical properties. Not the same concept as parts.
How to draw the drawings of mechanical parts
As long as you know CAD, it is easy to draw three drawings on a piece of paper for a mechanical part: front view (the picture seen from the front of the part), front view Figure (picture seen from directly above the part), left view (picture seen from the left of the part). Generally speaking, these three paintings can be expressed clearly with simple parts, like gear shafts. For complicated structure drawings, cross-sectional views and partial enlarged views are required to cut a part of the part and clearly express its internal structure and dimensions, such as screw holes, gear boxes, and gears. It is not enough to know so much, if you want to know how to draw in detail, you should also look at the mechanical parts drawings. In fact, most of the actual use is also assembly drawings, there are many details to pay attention to, practice more, and then read the book. OK now.
In addition, the mechanical parts also have their own standardized production. This is the United States to quantify the mechanical parts, such as the length and diameter of the screws, etc., a series of parts have been unified standards, so that once the machinery Failures are very easy to repair. This measure is similar to China's Qin Shihuang's unified text, language, weights and measures!

Finally, the cleaning of mechanical parts.
The dirt of mechanical parts mainly includes grease, anti-rust grease and other mixtures of sludge. It can be cleaned with alkaline cleaning solution, electrochemical cleaning, or ultrasonic cleaning machine. Ultrasonic cleaning machine cleaning is a cleaning The special category belongs to industrial cleaning. Use alkaline cleaning solution for cleaning. The process of alkaline cleaning liquid chemical cleaning is as follows: loading-alkaline cleaning-water washing (50-900C hot water)-drying (clean hot compressed air is blown dry, strict parts are required, and after compressed air is blown dry, It also needs to be baked in a 105-1150C electric blast drying oven for 10 minutes.     Electrochemical cleaning with alkaline cleaning solution  The electrochemical cleaning of alkaline solution should pay attention to the following points: thick oil on the surface of the machine parts should not be cleaned. If the oil is thick, other methods should be used for pre-cleaning; generally, the steel parts should be cleaned on the cathode and then on the anode. Spring parts, thin-walled steel parts, ultra-high-strength steel parts, etc. cannot be cleaned on the cathode (to avoid hydrogen infiltration and hydrogen embrittlement); machine parts made of copper, zinc, nickel and other materials cannot be cleaned on the anode (avoid The surface of the material is oxidized); quantitative analysis of the electrolyte is performed regularly, and drugs are supplemented according to the analysis results.

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