The locating ring is a metal ring used to locate the sprue sleeve (nozzle) in the hot runner system of the mold. It has the characteristics of high temperature resistance and high precision. There are usually two types, A and B, and there will be other different models due to special needs.
Extended data:
A, mold processing type
1, rough machining
Rough machining strategy needs to be determined according to the blank type and die surface. If the blank is forging or steel, it is best to use the regional gap model for rough machining first to remove most of the blank allowance and get a unified blank allowance, which provides convenience for subsequent processing.
2. Semi-finishing
The main purpose of semi-finishing is to ensure the uniformity of the allowance during finishing. The most common method is to calculate the boundary contour of the surplus material (referring to the three-dimensional contour of the unprocessed area of the tool), and then select a smaller tool to process these three-dimensional contour areas without reworking the whole model.
3, local finishing
Local finishing generally refers to corner cleaning. The chamfering process should adopt multiple processing or a series of tools from large to small.
Second, the related application of locating ring
Historically, the arrangement of positioning ring and optical system are competing with each other, and it is equally difficult in structure. A very accurate segmentation engine is needed to make a set of locating rings. When combined with the optical scale, the locating ring usually needs a larger diameter to make the pointing accuracy of the telescope reach the arc splitting accuracy. In the 20th century, the locating rings of most research telescopes were replaced by electronic encoders.
Baidu encyclopedia-positioning circle
Baidu encyclopedia-mold