Five-axis linkage machining center reliability test method

Abstract

The invention discloses a five-axis linkage machining center reliability test method, comprising the following steps: (1) establishing a reliability test system in a laboratory; (2) preheating a machining center, and detecting whether all the functions of the machining center is normal or not; (3) machining workpieces for testing according to typical process parameters and methods, and monitoring the state of the machining center through the reliability test system; (4) repeating the steps (2) and (3), detecting the function and the state of the machining center through observation and the reliability test system, and detecting the precision of the machining center at regular time to judge whether serious precision recession or loss occurs or not and determine a fault; and (5) counting up the accumulated fault-free working time T0, the accumulated fault occurrence frequency and the accumulated repairing time T1 of the machining center, calculating the reliability index of the machining center and evaluating the reliability level of the machining center. The invention has the advantages of simple principle, convenience for operation, high measurement precision, good reliability and the like.

Description

technical field [0001] The invention mainly relates to the field of machining centers, in particular to a reliability test method suitable for five-axis linkage machining centers. Background technique [0002] The five-axis and six-axis linkage machining center is a high-tech, high-precision machine tool specially used for processing complex curved surfaces. The only means of processing crankshafts, etc., its quality level has a decisive influence on a country's aviation, aerospace, military, scientific research, precision instruments, high-precision medical equipment and other industries. Reliability is an important quality characteristic of machining centers and an important guarantee for the international competitiveness of machining centers. It is of great significance to study the reliability of machining centers. [0003] Most of the research on the reliability of machining centers adopts this idea: first select several machining centers, and then obtain the fault dat...

AI Technical Summary

Problems solved by technology

Due to the long sampling period and slow information feedback of the on-site statistical method, and the current technology update of the machining center is fast, the market delivery cycle is short, there is no coordination between the two, and the reliability research is seriously lagging behind. In addition, the on-site mathematical statistical method is also affected by environmental conditions. Influenced by the level of operators, the accuracy of failure and fault data is not high, and the real cause of the fault is sometimes difficult to analyze.

[0007] 3) In the reliability test of the machining center, the judgment of the failure of the machining center is mostly based on the judgment of the operator. Due to the different level of the operator, the failure may not be judged in a timely and accurate manner, resulting in the untimely discovery of the failure. Even cause destructive damage to the machining center

Therefore, during the test, the state of the system should be accurately judged in time, and a fault judgment should be made to ensure the accuracy and integrity of the fault data of the machining center, but the field test is difficult to meet the requirements

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