When we are cnc machining the mold, we must have a parting line. Why is there a parting line? In fact, the parting line is also called the parting line. It mainly depends on the design requirements and appearance requirements of the product. Whether the processing is feasible and the position of the mold follow-up glue. In any case, plastic products will have more obvious parting line marks, but on the other hand, looking at the parting line can know the structure of the mold.
Before designing the parting surface, we must first determine the shape and position of the parting line on the plastic part. When the mold opening direction is determined, it is easier to determine the parting line. Because the projection of the parting line in the mold opening direction coincides with the outer contour of the plastic part in that direction, you can use a straight line parallel to the mold opening direction to move along the outer contour of the object projection and find Find out the intersection of the line and the surface of the object at each position.
- (1) The straight line intersects the surface of the object at a point, and that point is the point on the parting line.
- (2) The straight line and the object intersect at multiple points and multiple straight line segments, indicating that the intersection of the global approach cone and the mold opening direction is 0, so the core is designed in this area, and the parting line should be determined according to the shape and size of the core .
- (3) The straight line and the surface of the object intersect in a straight line segment, then any point on this straight line segment can be used as a point on the parting line, specifically determine which point is used as a point on the parting line, generally it is adjacent to The shortest point connection is the principle. It can also be determined interactively.