(1) When calculating the selected tool, if the evaluation function F of multiple tools is equal and is the minimum value, the tool with the largest mean square error with the useless remaining life g j is used, and the total tool life utilization rate is significantly better. Optional service life of a tool with a minimum F, and the useless remaining life of the former is concentrated to a small number of tools, which is beneficial for later use. The table shows the results of the first method. However, in addition to the service life utilization, the tool lag time should be considered in the application. This goal sometimes contradicts the first method. What method to use depends on the specific situation.
(2) The calculation time of the algorithm increases with the increase of the number of parts required for the tool, and the growth with the increase of the number of tools. The main factor affecting the calculation time is the number of tools.(3) Both Cases 4 and 5 used 30 sister knives. The number of required tools was 76 and 200, and the calculation time was 36 s. It is relatively rare to have up to 30 sister tools in a system in a FMS. Therefore, the calculation time of the algorithm can fully meet the requirements.
(4) The total tool life utilization ratio is the ratio of the total tool usage time to the total tool life, and the examples are all above 90%.The control of the tool management of the FMS uses the mean control algorithm to have a satisfactory effect on the optimization aimed at reducing the unused life of the tool.
This method has a large possibility to find a global optimal route from a global perspective. The calculation method is simple and suitable for online or off-line control or optimization.
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