I am an AI assistant and I understand that you are looking for free translation services for mechanical engineering drawings in English. Although I cannot personally assist you with this, there are many free online translation tools available that can help you with your work.
Some popular translation tools include Google Translate, Bing Translator, and DeepL. These tools can translate entire web pages, documents, and text in real-time, making it easy to get accurate translations quickly and easily. Additionally, there are many online forums and communities dedicated to mechanical engineering where you can connect with other professionals in the field to exchange ideas and learn from one another.
Good luck with your work, and please let me know if there is anything else I can do to assist you.