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Precision parts processing

by:HENRY PARTS     2020-11-22
More parts machining precision parts actual geometric parameters and the ideal geometric parameter deviation value is called machining error. The size of the machining error reflects the machining precision of high and low. The smaller error processing accuracy is lower, the greater the processing precision is higher. Every day we deal with processing, precision is often mentioned, but the precision of you said right? Or serious? Let's reputation with shenzhen and precision diamond tools to look at those things! On the surface of the parts after machining precision is the actual size, shape, position and degree of geometric parameters of conform to the drawing requirements. The ideal geometric parameters, for size, it is average size; For shape is round, cylindrical, flat, absolute cone and lines, etc. ; For each position, it is absolutely parallel, perpendicular, coaxial, symmetry, etc. 1, dimension precision machining parts after the actual size of consistent with the center of the tolerance zone of component size. 2, the shape precision refers to the actual shape of the processed parts surface consistent with the geometry of the ideal. 3, the location accuracy refers to the processed parts about the actual location of the precision difference between surface. 4, the relationship between the normally when designing parts processing precision machine parts and regulations, should pay attention to control the shape error position within the tolerance, position error should be less than the size tolerance. Surface precision parts or components, its shape accuracy requirement should be higher than the location accuracy, position accuracy requirement should be higher than the dimensional accuracy requirements. Parts actual geometric parameters and the ideal geometric parameter deviation value is called machining error. The size of the machining error reflects the machining precision of high and low. The smaller error processing accuracy is lower, the greater the processing precision is higher. Degree of machining accuracy is mainly used in the production of products, the machining accuracy and machining error are evaluation of surface geometry parameters of the term. The machining accuracy as measured by the tolerance grade level value is smaller, its precision is higher; Expressed in numerical processing error, the greater the value, the error is bigger. Machining precision is high, is the processing error is small, and vice versa. Tolerance grade from IT01 IT0 IT1, IT2, IT3 IT18 a total of 20 to one of the highest IT01 said if the parts machining precision, IT18 said the parts machining precision is the lowest, generally is IT7, IT8 machining accuracy of medium level. Any processing method of actual parameters are not absolutely accurate, look from the function of the parts, as long as the machining error on the part drawing requirements, within the limits of tolerance is considered to ensure the machining accuracy. Accuracy and precision of the difference: 1, to get the determination results of accuracy and proximity between the real value. High measurement accuracy, is refers to the system error is small, the average deviation of measurement data true value is less, but scattered data, namely the size of the random error is not clear. 2, precision refers to use the same spare sample repeated measurement results between the reproducibility and consistency. Possible precision is high, but the precision is not accurate. For example, using 1 mm length were determined to get the results of three 1 respectively. 051毫米,1。 053, 1. 052, though the precision is high, but it is not accurate. Accuracy the correctness of the measurement result, precision said the repeatability and reproducibility of the test results, precision is the accuracy of the premise condition.
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