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Dynamic test Spindle Error

flcos7 + acosasinY equation ( 6 ) into two parts :, 5,,,, D + ten w ¹是,, SSooCC mouth one by one 6 )) is是,, Z 2 Liang Shuqing . Such as : dynamic test Spindle Error 23 , () a , . (+) A, 1 ():: 6A, sin (wA +) (7) c ,[link widoczny dla zalogowanych], ( ) a (A, a 2, .) (kff +) A, 2 () a O (8) (7) is the eccentric exercise (8) as an error of movement. Measuring eccentricity e and a straight ball movement amplitude errors were : P a 6A, a ,, oi-a-D, / n + b2-2abIsin (a one LU ) I returned xoy coordinate system, measuring the eccentricity of the ball movement As : z () a ecos (kW +),+)( 9) Y () a esin (kW +),+) time error motion is: 5'1 () a lcosTcos (kW +) (10) 5'1 () A 5'1sinYcos (kW +) is subtracted from the measured signal the eccentric exercise can be an error motion contains a complete axis including the error motion : a z fifteen (I o, 1, ..., N a 1) ( 11) () a) I ( ) 4 experimental test of the flotation test system using the three speed shaft to the radial error of the test , the test results shown in Table 1 ( pressure of 0.35MPa, record laps 4 laps). The results in Table 1 Experiment 2 Experiment 3 Experiment 1 a 450. N a 256 a 700. N = 280 for a 1100. N a 290 error number error number error number AlumAlumA/pm10.3185610.3102410.2902820.3210120.3054620.2983530.3180030.3061830.2898240.3246840.3112O40.2905650.3158250.3065650.29012 Note: For speed ( r / min); N is the number of sampling points . 5 Conclusion successfully through the fitting accuracy of the data processing of the spindle , eliminating the eccentric at the same time , retained the spindle error motion and speed of movement with the frequency of an error , can reflect the spindle error motion . Experimental verification , the text of the test system can accurately measure the spindle rotating accuracy , which is to improve machine tool accuracy, and ensure the quality of mechanical products with practical significance.