Boots – shoes – and leggings
Patent
1995-12-13
1997-03-11
Envall, Jr., Roy N.
Boots, shoes, and leggings
36447428, 36447429, 3644743, 36447431, 36416701, 318561, 318569, 318573, G06F 1900, G06G 764, G06G 766
Patent
active
056108230
ABSTRACT:
A method of speed optimization of a spindle component of a machine having multiple synchronized components moving along multiple axes over a motion profile. The method including a first step further including: obtaining a motion error value of a synchronous component over the motion profile as a function of frequency; identifying a plurality of contour portions of the motion profile; specifying the motion error tolerance for the motion profile according to the requirement of the application; calculating component numbers and component values of the synchronized component over a selected contour portion using a Fast Fourier Transform (FFT); selecting a first speed of the spindle component; calculating spindle frequency from the speed of the spindle component; and a second step further including: multiplying the spindle frequency by the component numbers to obtain tool component frequencies; calculating the motion error value for selected tool component frequencies; multiplying the motion error value of the frequency defined by the component number, and the component value to obtain an error prediction for each component number; combining the error predictions for each component number to obtain a maximum predicted motion error for the contour portion; comparing the maximum predicted motion error for the contour portion with the motion error tolerance wherein the maximum predicted motion error must be less than the motion tolerance; and selecting the greatest spindle speed wherein the maximum predicted motion error is less than the tolerance. The method of the present invention further includes interpolating the optimum spindle speed over the entire motion profile.
REFERENCES:
patent: 3656377 (1972-04-01), Kosem
patent: 4079235 (1978-03-01), Froyd et al.
patent: 4347470 (1982-08-01), Kohzai et al.
patent: 5404308 (1995-04-01), Kajiyama
Catalano Frank J.
Coburn Optical Industries Inc.
Envall Jr. Roy N.
Lewis Monica
Zingerman Scott R.
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