the outner keys and the inner keys

We all know that the car keys play a key role when the car wants to run on the road. Therefore, the car key is very important to the car. As long as the friend who has a car in the family has the car key, whether you are an electric car, a car or even a bicycle, there are many kinds of keys we see, each kind of key All have their own characteristics, and the methods and machines we go to the lock shop are different. So what is the difference between them? Let’s start with the production process of the lock plate (if there is a principle of car lock If you don’t understand, I recommend you to read the following article: Shrapnel lock classification of car locks). We know that the locks produced by different locks make the keys have three types: flat milling, external milling, and internal milling. These three types are It is formed by the organic combination of the lock piece in the lock. Before this, I will popularize a concept for everyone, that is, the key track, what is the key track, it refers to the combination of the actual working point of the key inserted into the lock cylinder.

Automobile mechanical key classification

First: Flat milling single track

The flat milling single-track key refers to the flat milling key with only one track working. (PS: If there are two tracks on the key but as long as one track is working, it is called flat milling single track) Generally, the keys for small electric cars, drawer cabinets, and metal cabinet locks are this kind of keys, as follows The picture shows:
Car mechanical key classification, car key classification pictures

Car mechanical key classification, car key classification pictures


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Second: flat milling two tracks

The two-track flat milling key refers to the flat milling key in which both tracks of the flat milling key work at the same time. Generally, this kind of key locks are mostly found in motorcycles, vans, trucks, trucks, Buick Excelle, Kia K2, Toyota Vios, most cars of Nissan, and most of the domestic cars under 100,000 yuan are basically this kind of keys. ,As shown below:
Car mechanical key classification, car key classification pictures

Third: internal milling two tracks

The internal milling two-track key means that the two trajectories of the internal milling key are working, and the other trajectories are not working. Generally, this kind of key is used in small knife electric cars, C-level lock cylinders of anti-theft doors, and most of Volkswagen, Audi, and BMW locks are keys of this type of lock. The specific picture is shown in the following figure:
Car mechanical key classification, car key classification pictures

Fourth: Four-track internal milling

The internal milling four-track key refers to the internal milling key in which all four tracks of the internal milling key are working. Generally, this kind of key is mostly found in Toyota Crown, and some modern cars, Lexus, etc. are this kind of key, the key is shown in the following figure:
Car mechanical key classification, car key classification pictures