1. The number "7" is very unpopular in the machinery industry. For example, you can hardly buy M7 screws on the market, and 7mm shafts and bearings are not very common. If you insist on designing a part to be welded with 7mm thick steel plates, your boss may call you mentally retarded.
2. "One millimeter" is a fairly large scale in the machinery industry, and even in the entire manufacturing industry. If you see an advertisement like "accurate to the millimeter level" on TV one day, remember to blacklist this company.
3. "Automation" does not mean "robotization". Robots are usually only used in a small part of the automated assembly line. Why? Because it is not necessary.
4. Robots are rarely used directly in processing procedures, especially metal cutting. Because the reaction force of cutting metal can break the arms of most robots. Except for delicate work such as deburring.
5. There are two common power sources in factories: "electricity" and "gas". The power source refers to the total supply system that can be drawn out by plugging in a plug, and "gas" is high-pressure air.
6. Continuing from the previous point, the higher the proportion of "gas" in the two driving methods, the dirtier the factory tends to be.
7. Some people who make machinery, including me, like to imagine the users of the equipment they design as a kind of creature with "skin that breaks when touched but can put hands into all kinds of strange gaps without brains", and then decide how many safety measures are needed to prevent such creatures from getting hurt based on the budget.
8. In the past two years, artificial intelligence has been seen to be faster than the sky and the earth, but in actual mass production, most of them can only process production (big?) data for the time being.
9. 3D printing (rapid prototyping) is a technology that was actually produced more than 30 years ago and then dug up by some media with ulterior motives. The current progress of this technology basically depends on the progress of materials science.
10. Few machines can work exactly as designed after they are made. In this case, on-site adjustment (B) and testing (zheng) are required.
11. After working in this industry for a long time, you can really tell how thick the screw in your hand is without measuring it with a ruler, and the accuracy rate is at least 90%.
