Spectral analysis of tangential integrated error We measured the overall error of the tooth surface of a single spur gear (m=2.5mm, z=44) on the CD320G-D single-bit instrument, and the two-way error obtained after computer processing. Tangential comprehensive error curve (the upper one is the tangential comprehensive error curve of the left flank, Fcie=30135Lm; the lower one is the tangential comprehensive error curve of the right flank, Fcir=41151Lm), the tangential comprehensive error of the left flank Spectral map, the horizontal coordinate is the frequency f, the ordinate is the amplitude A, the unit is Lm. The main frequency from the visible is the first frequency (A1=9146Lm) and its multiplication, the tooth frequency (Az=0152Lm) and The multiplier, the 1st frequency is caused by the total eccentricity e2 of the gear. The tooth frequency and its multiplication are caused by the base deviation and the tooth profile error, and the error source mainly comes from the gear shaping cutter.
It can be seen that in addition to the above frequencies, there are two more meaningful frequencies, one is the 110th frequency (A110=0165Lm), and the other is the 240th frequency (A240=0.19Lm). This gear is machined on the Y54 gear shaping machine. The number of teeth of the pinion cutter is Zd=40. Because the number of teeth of the machine table is typhoid Zy1=240, the number of teeth of the gear shaping axis worm wheel Zy2=100, the indexing worm It is a single head, so it can be inferred that the error source of the 240th frequency is the error of the worktable indexing worm, and the error source of the 110th frequency is the error of the gear shaping axis indexing worm.
Spectral analysis of radial integrated error and normative error We measure the overall error of a toothed surface of a single spur gear (m=1mm, z=116) on the single-bit instrument, and the two-way tangential synthesis obtained by computer processing Error curve (Fcie=83171Lm, Fcir=65141Lm), separated radial integrated error curve and norm error curve (Fdi=60106Lm, fdi=13187Lm) and (Fc=46167Lm), radial integrated error and norm error Spectrograms and. The main frequencies from the visible radial integrated error are the 1st order frequency (A1=21105Lm), the tooth frequency and its multiplication (Az=1130Lm, A2z=0166Lm). The error source of the 1st order frequency is the geometric eccentricity of the gear 1. The error frequency of the tooth frequency and its multiplication is the base deviation and tooth profile error of the shaper.
The main frequency from the visible fan error is 1st frequency and 2nd frequency, A1=8118Lm, A2=12197Lm. Because the gear is machined on the Y54 gear shaping machine, the number of teeth of the pinion cutter is zd=64,z/zd =116/64U2, so it can be inferred that the error source of the 1st frequency is the eccentricity of the indexing worm wheel of the
Machine Tool table, and the error source of the 2nd frequency is the eccentricity of the gear shaping worm wheel.
Spectral analysis of tooth profile error We measured the overall error of a grinding spur gear (m=5mm, z=15) on a single-bit instrument, and processed the tooth profile error curve of the left tooth surface of the second tooth (ff=8168Lm). , ffA=4188Lm, fHA=6116Lm), the spectrogram of the tooth shape error (the tooth profile error curve and the spectrogram of the remaining tooth faces are similar). It can be seen that the main frequency of ffA is 1st frequency and 7th frequency, A1=0189Lm, A7=0150Lm. Analyze the number of revolutions of each component in the transmission chain during the period of one tooth shape, and find the frequency of 1 time. And 7th frequency error source.
Conclusion Through the above several measurement examples, it can be seen that on the multi-function CD320G-D single-bit instrument, the spectrum analysis function is applied, combined with the analysis of the machine tool transmission chain, the machining error source of various cutting technology can be effectively found. It is another advantage of the gear overall measurement technology.
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