Tips in CNC Machining Of Metal Parts

Mold direction of CNC Milling Precision Chemical Components

The four lead holes of the mold blank are not completely symmetrical, and one of them is asymmetrical. Therefore, it is clear that the mold is processed before and after the mold. Each template has a reference. The front and back of the mold must be benchmarked. In particular, be sure to pay attention to the molds that are formed by the original mold. Also pay attention to the direction when drawing, the direction of the copper and the front view (top view) are the same, the direction of the core, the Tibetan frame is the same as that of the copper, and the front is the opposite. Some decorative lines such as grooves or bosses on the surface are not easy to process because they are relatively narrow. For the groove, we generally avoid the slot, that is, mill the depth, and then make up a loose face to make a sinking surface. The boss can only be separated into a single public, and the big copper is not made, so as to ensure the quality.

Mold, product tolerance

A set of CNC Milling Precision Components usually has several and a dozen parts. The main matching dimensions of these parts are guaranteed by computer boring. It is very important to choose reasonable tolerances, especially some product design drawings do not consider the coordination problem. The bottom, the matching of the shell, the shape is undoubtedly 0 to 0, the positioning is guaranteed by the branch, the tolerance of the concave and convex mouth is generally 0.1MM, one side. The accessories on the big body such as transparent mirrors, the shape of the general accessories is smaller than the size of the big body. Single side 0.1~0.2. The active parts of the big body, such as buttons, the shape of the accessories is 0.1~0.5 smaller than the shape of the big body. The shape of the surface of the large body is generally the same as the shape of the surface of the large body, which can be lowered from the surface of the body.