Analysis Method of NC Machine Tool System Component Replacement Time Based on Time Correlation
A technology of numerical control machine tools and replacement time, which is applied in the fields of electrical digital data processing, computer-aided design, special data processing applications, etc., and can solve problems such as calculation deviation of component spare parts inventory
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[0093] Analysis of replacement time of CNC machine tool system components
[0094] The fault analysis was carried out on 110 fault data of a certain CNC machine tool field collected from 14 sets, and it was found that a total of five components were faulty.
[0095]Table 1 CNC machine tool system component fault information (h)
[0096]
[0097] Due to the lack of fault information of the D and E components, only the replacement time of the A, B, and C components is studied.
[0098] According to the data in Table 1, the time between failures is calculated, and the three-component stationarity test parameters are shown in Table 2. Take the A component as an example, and calculate the number of runs γ=15, N 1 =10, N 2 = 26, calculated mean E γ = 15.4, D γ =5.55, Z=-0.189, because |Z|<1.96, so the fault data series is considered to be stationary. Similarly, it can be determined that the B and C fault data series are stationary.
[0099] Table 2 Three-component stationa...
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