How can we effectively improve the accuracy management of our injection mold during processing. Firstly, we need to know which aspects of the problem affect the production and processing accuracy of injection molds.
1. Dimensional accuracy
Refers to the actual working dimensions of the processed part and the tolerance size and range of the part.
Accuracy is controlled by dimensional tolerances. Dimensional tolerance is the allowable deviation of part dimensions during the cutting process. When the basic dimensions are the same, the smaller the dimensional tolerance, the higher the dimensional accuracy.
2. Shape accuracy
Refers to the degree to which the actual geometric structure shape of the processed product part overlaps with the ideal geometric model shape. There are 6 items for evaluating shape and accuracy, such as straightness, flatness, roundness, cylindricity, and line contour. The accuracy of different shapes is controlled by shape tolerance management. Except for roundness and cylindricity, all these shape tolerances are classified into 12 accuracy requirement levels. Level 1 high, level 12 low.
3. Position accuracy
It 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, verticality, inclination, coaxiality, symmetry, position, circumferential runout, and total runout. The accuracy of positional positioning is controlled by positional tolerances, and positional tolerances for various purposes are divided into 12 accuracy evaluation levels.
When designing mechanical parts and determining machining accuracy, attention should be paid to controlling shape errors in positional tolerances, and positional errors should be less than dimensional tolerances.
