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[CN 201710317271.3] A method to improve the assembly accuracy of the rod system of the eight-link mechanical press
[CN 201710317271.3] A method for improving the rod assembly accuracy of an eight-link mechanical press Title: A method for improving the rod assembly accuracy of an eight-link mechanical press Application number: CN 201710317271.3 Applicant: Hefei University of Technology Application date: 2017-5-4 Patent type: Invention application The present invention discloses a method for improving the rod assembly accuracy of an eight-link mechanical press, which includes the following steps: determine the 12 variables of the eight connecting rods: the length of the eight rods, the abscissa and ordinate of the second fulcrum O1, and the two fixed clamping angles; Determine the parameters of the rod system as the test factors during each orthogonal test, and each test factor will determine and select several factor levels according to the target test conditions; Determine a set of values of each variable and assign them to 12 rod system parameters respectively to obtain corresponding factor levels, in the subsequent orthogonal test, the values of each variable are increased according to the same proportion and assigned to the 12 rod system parameters respectively to obtain the factor levels of the 12 test factors under the corresponding orthogonal test; in each orthogonal test, the stroke offset corresponding to the slider is obtained, and the range analysis method is used to obtain the range of each test factor; the factors are sorted in descending order of range.
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