What are the factors that affect the accuracy of plastic molds in processing?


Author: MULAN -Plastic Molding Manufacturer

How to improve the precision of the mold during the plastic mold processing? First of all, we must know which aspects affect the processing accuracy of plastic molds. The following Shanghai Injection Molding Factory will introduce the factors that affect the processing accuracy of plastic molds. 1. Dimensional accuracy refers to the consistency between the actual size of the processed part and the dimensional tolerance of the part.

Dimensional accuracy is controlled by dimensional tolerances. Dimensional tolerance is the amount of variation allowed in part dimensions during the cutting process. If the basic dimensions are the same, the smaller the dimensional tolerance, the higher the dimensional accuracy.

2. Shape accuracy refers to the consistency between the actual geometric shape of the machined part surface and the ideal geometric shape. The items for evaluating shape accuracy include straightness, flatness, roundness, cylindricity, and line profile. Form accuracy is controlled by form tolerances.

Various shape tolerances are divided into 12 precision grades except for roundness and cylindricity which are divided into 13 precision grades. Level one is high and level twelve is low. 3. Position accuracy refers to the difference in actual position accuracy of the surface of the machined part.

The items for evaluating position accuracy include parallelism, perpendicularity, inclination, coaxiality, symmetry, position, circular runout and full runout. Position accuracy is controlled by position tolerance, and the position tolerance of each item is divided into 12 precision grades. Usually, when designing machine parts and specifying the machining accuracy of parts, attention should be paid to controlling the shape error within the position tolerance, and the position error should be smaller than the size tolerance.

For more information about plastic molds, please visit Xingye's official website: http://www.dgxingyesj.com/.

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