After you design this machine part, you can take the design drawings to the declaration hall of the local intellectual property office to declare the patent right. There are many kinds of intellectual property rights in China, such as patents, copyrights and trademarks. What you can declare is the patent right. Of course, this kind of application cannot be completed at one time. You need to fill in the application form and wait for the patent examination department to inquire about patent information according to your drawings. If it is really the first one to carry out this design, you can successfully apply for a patent.
At present, there are many patent application institutions. You can look for them on local websites or the media. They will help you apply for a patent right, and you don't need to run errands yourself, but the agency fee will be higher. You can weigh yourself.
I hope I can help you.