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Nondimensional flowrates and fluctuation coefficients of gear pumps are discussed.
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Next, flowrates and fluctuation coefficients of spur gear pumps both with and without relief grooves are calculated and compared.
In this paper, besides the frequently used gear optimization variables, i.e. the module, the face width, and the number of teeth, profile shift coefficients of both gears are included to create a five-variable process.
Figure 5 Frequency scalogram of wavelet coefficient of the gear unit with a gear with a crack in a tooth root.
Figure 6 Frequency scalogram of square wavelet coefficient of the gear unit with a gear with a crack in a tooth root.
The test results show that the counting efficiency of 0.3μm gear is above 70%, 0.5μm gear and 1.0μm gear are both reached more than 90%, and the dispersion coefficient of each gear is very nearly the same, compared with the standard machine of Kanomax 3886 under the particle spraying flow of 2.5SCFH, 3.0SCFH, 3.5SCFH.
On the condition of the invariant mean working tooth depth, invariant outer diameter of gear and the gear addendum coefficient fa ⩽ 0, the new pitch cone parameters are derived.
Figure 3 Frequency scalogram of wavelet coefficient of the reference gear unit.
Figure 4 Frequency scalogram of square wavelet coefficient of the reference gear unit.
By the calculating formula are considered: lateral leading away of front steered wheels; re-distribution of the load on the wheels; hook resistance; coefficient of the differential gear black system; distance between centers of jointed in pairs tandem wheels constituting a counter-balanced suspension and other geometric, kinematic and dynamic parameters.
When modification coefficients are identical, gear volumes rise with increasing of the number of gear tooth.
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