Earlier, Tesla CEO elon musk said that Tesla is turning to aluminum casting design instead of the current model? Y body adopts a series of stamped steel parts and aluminum parts. He even said, "When we get a large casting machine, the number of car bodies will be reduced from 70 to 1 car, which will reduce the capital expenditure of assembling these parts by all machines."
A person who is best at slapping can achieve a lot. For example, the body designed by aluminum castings, Tesla is already doing it, and it is in Model? You get up. Even if Musk applied for a patent for a large casting machine, the time for Tesla to apply for a patent in the United States was 20 18 65438+ 10/8.
Tesla shared some models in fremont, California? The picture of Y production line, which shows the model used to make the model? Y's big body parts are now basically confirmed, Tesla models? You really did it!
Moreover, it seems that the patented large-scale resident machine has been realized and the parts have been produced.
Speaking of which, you may still be MB, didn't you say "reduce 70 copies to 1"?
There are far more than 70 auto parts. The 70 mentioned here should refer to the number of sheet metal parts such as floor assembly or side wall assembly. Of course, the whole body-in-white is not just a part, but also needs to be assembled.
Originally a number of parts, Tesla now "combines n as 1", which has obvious benefits, such as better torsional stiffness and lighter weight coefficient of the whole vehicle, and reduces the possibility of abnormal sound of sheet metal.
In terms of cost, I personally don't think it will save much. Although the overall expenditure of assembling these parts will be reduced and the labor cost will be reduced, the cost of manufacturing these parts will be greatly increased. Therefore, in terms of comprehensive cost, Tesla will not say it, and no one knows.
Tesla had to do this for a simple reason: Model before? 3 In the design, because the parts design of the afterbody is too complicated, there are too many processes and parts in the assembly, which leads to time-consuming and labor-consuming, and the production efficiency is extremely low. Even Musk fired the model? Body designer of 3.
And models? Y is mainly for models? The design and technology of 3 have been optimized. Many parts of the two cars are common, but they can't be produced on the * * * line because of the model? Y deleted some unnecessary designs and processes, and introduced a brand-new patent for wiring harness design, which greatly reduced the wiring harness in the car.
So Tesla is so radical that it should be related to production capacity.
Although the integral aluminum casting design has many advantages, it also has many disadvantages.
For example, if the process is difficult, the defective rate of parts may increase. If there is something wrong with one side or one corner, the whole piece is useless. Of course, high yield is all through trial and error.
Then for ordinary consumers, the maintenance cost is high, and for maintenance personnel, the maintenance is also difficult. No one can guarantee that you won't make mistakes. Even if you drive well, there is no guarantee that others will make mistakes and affect you. Stumbling is inevitable. Once a collision occurs, it is not the usual "one part", but "one part with n parts combined together".
Therefore, the maintenance cost is not high, which can be described as "very high" (local tyrants are counted separately).
Ordinary people only have one question: how to calculate the maintenance fee?
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.