How to choose the positioning components of the injection mold customized processing workpiece?
1. The injection mold is customized to process the workpiece to be positioned in a plane
According to the number of degrees of freedom restricted by the plane, there are three types:
The main bearing surface limits the positioning plane of the three degrees of freedom of the workpiece, and is often used for workpiece positioning surfaces with relatively high precision.
The guide bearing surface restricts the positioning plane of the two degrees of freedom of the workpiece, and is often made into a narrow and long surface.
The thrust bearing surface limits the plane of one degree of freedom. In order to ensure accurate positioning, the plane area is often made as small as possible.
2. The injection mold is customized and the workpiece is positioned with a circular hole
Long pins are limited to 4 degrees of freedom; short pins are limited to 2 degrees of freedom.
3. The positioning of the cylindrical surface outside the customized workpiece of the injection mold
The positioning datum is the center line of the outer circle. There are three types of commonly used
Locating sleeve: for centering and positioning Support plate: for positioning the outer circle
V-block: realize the centering and centering of the outer surface
