Design method for improving reliability of horizontal machining centre
A technology of machining centers and design methods, applied in computing, special data processing applications, instruments, etc., can solve problems such as low reliability, economic waste, and no value.
Inactive Publication Date: 2015-09-23
大连新宇理工科技开发中心有限公司 +1
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Problems solved by technology
If the reliability level of some components of the horizontal machining center is very high, while the reliability level of other components is very low, then the reliability level of the whole machine mainly depends on these components with low reliability level, and those components with high reliability level are Does not reflect its value, resulting in economic waste
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[0085] The invention utilizes the fault data generated during production and operation of new and old batches of horizontal machining centers. Before the calculation, the actual operation failure data of 16 horizontal machining centers of a certain model for more than 6 months have been collected and sorted out, and the failure data of the old batch of horizontal machining centers of the same model have been collected at the same time.
[0086] (1) Find the matrix R 1
[0087] Table 1 lists the hazard impact degree, average maintenance time, failure frequency, and cost-benefit ratio score of each subsystem of the old batch of horizontal machining centers.
[0088] Table 1 The fault data table of the old batch of horizontal machining centers
[0089] subsystem
failure hazard
mean time to repair
Failure frequency
cost-benefit ratio
Workpiece transfer system
60
62
6.167％
5.83
control electrical system
61.67
58
8...
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A design method for improving reliability of a horizontal machining centre is to use the data of an old horizontal machining centre to improve the reliability of a new horizontal machining centre. The method comprises the steps as follows: dividing the machining center as ten sub-systems; determining that the allocated index is mean free error time MTBF, respectively calculating harm influence degree, mean maintenance time, failure frequency, and matrixes R1 and R2 of cost ratio of each sub-system in the new machining centre and the old machining centre after collecting the reliability relevant data of the new machining centre and the old machining centre, then calculating a proportion matrix W of an influence factor, and finally obtaining the MTBF which should be distributed for each sub-system to obtain a reliability design result. The invention provides an improved method for designing the reliability of the machining centre. The method of invention uses the data of the old machining centre and increases the sample amount, and is a reliability design method which is closer to the actuality.
Description
technical field [0001] The invention relates to a design method for improving the reliability of horizontal machining centers. The method uses the fault data of the old batch of horizontal machining centers in the use stage to improve the reliability design of the new batch of horizontal machining centers, and improves the reliability of the new batch of horizontal machining centers. The overall reliability level of the horizontal machining center. Background technique [0002] The horizontal machining center is the most important equipment on the flexible machining production line. At present, a large number of horizontal machining centers are used in many production lines, such as the production line of automobile engine block and cylinder head. But the reliability level of many horizontal machining centers is still relatively low. The low level of reliability of horizontal machining centers will directly affect the production efficiency of users of horizontal machining ...
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IPC IPC(8): G06F17/50
Inventor 丛明郝思文韩玉婷
Owner 大连新宇理工科技开发中心有限公司