The focus of pure basic level consideration is how to reduce errors and improve accuracy, so the basic principles for selecting essential surfaces are:

First: the principle of datum coincidence. The design datum should be selected as the positioning datum as much as possible. Especially in the final completion, to ensure accuracy, more attention should be paid to this principle. This can avoid the position error datum deviation;

Second: the principle of unified datum. Various surface treatments of unified positioning datum surfaces should be selected to ensure the position accuracy between surfaces as much as possible; sometimes the principle of common datum is also followed for repeated processing;

Third: the principle of self-datum. Some small machining allowances and unified finishing processes ensure machining quality and productivity, and the precision machining surface itself is used as a basic level.

We are a company specializing in the manufacture of non-standard metal parts in Yancheng area. We have many years of technical accumulation in the manufacture of precision metal parts such as stainless steel, titanium, aluminum, etc. with a size of ￠0.5-￠20mm.

Our main products include: non-standard micro components, stainless steel components, medical equipment accessories, lighting accessories, fasteners, connectors, instrument accessories, shaft sleeves, fiber optic connectors, LC tail handles, SC tail handles, precision machinery parts, fiber optic communication accessories, screws and nuts, electronic product accessories, copper, aluminum rivets and other civil and military products with high standards, high quality and high cleanliness, more than 200 varieties for customers to choose from. In addition, we can also manufacture products that satisfy customers according to their different requirements.