What factors will affect the precision of injection mold processing?

Author: MULAN -Plastic Molding Manufacturer

Professional injection mold processing should be reminded how to effectively improve the precision management of the mold during the processing of our injection molds. First of all, we must know which problems affect the production and processing accuracy of injection molds. 1. Dimensional accuracy refers to the actual working size of the processed parts and the tolerance size and range of the parts.

Accuracy is controlled by dimensional tolerances. Dimensional tolerances are the allowable deviations in part dimensions during cutting. When the basic dimensions are the same, the smaller the dimensional tolerance, the higher the dimensional accuracy.

2. Shape accuracy refers to the degree of coincidence between the actual geometric structure shape of the surface of the processed product part and the ideal geometric model shape. There are 6 items for evaluating shape and accuracy, such as straightness, flatness, roundness, cylindricity and line profile. Different shape precision is controlled by shape tolerance management.

In addition to roundness and cylindricity, all of these form tolerances are divided into 12 precision requirement classes. Level 1 is high and level 12 is low. 3. Position accuracy refers to the difference between the research surface of the processed 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, circular runout and full runout. The position positioning accuracy is controlled by the position tolerance, and the position tolerance for various purposes is divided into 12 accuracy evaluation grades. Injection mold processing manufacturers understand that when designing mechanical parts and determining processing 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.