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2023

Injection mold processing can be affected by these factors

Our injection mold in the processing, for mold precision management work how to get effective improvement. First of all, we need to know what problems are affecting the production and processing precision of injection molds.

1, dimensional accuracy

Refers to the actual working size of the processed parts and parts of the tolerance size and range.

Accuracy is controlled by the size tolerance. Dimensional tolerance is the allowable deviation of the part size in the cutting process. When the basic size is the same, the smaller the dimensional tolerance, the higher the dimensional accuracy.

2, shape accuracy

Refers to the processed product parts for the surface of the actual problem geometric structure shape and the ideal is the geometric model shape of the degree of coincidence. There are 6 items to assess the shape and accuracy, such as straightness, flatness, roundness, cylindricity and line contour. Shapes with different accuracies are controlled by shape tolerance management. In addition to roundness and cylindricity, all of these shape tolerances are divided into 12 accuracy requirements level. 1 high, 12 low.

3、Positional accuracy

It refers to the difference between the research surface between the machined parts and the actual working position and accuracy of the enterprise. The accuracy evaluation of position information includes eight aspects: parallelism, perpendicularity, inclination, coaxiality, symmetry, position, circumferential runout and full runout. Positional positioning accuracy is controlled by positional tolerances, which are categorized into 12 accuracy assessment levels for various purposes.

Generally when designing mechanical parts and determining machining accuracy, attention should be paid to controlling the shape error in the position tolerance, and the position error should be smaller than the size tolerance.