Active regulation and control method for tooth profile deviation of gear involute template

[0038] Take the initial base circle radius r b =100mm, value range 5~65mm, value length L α =60mm gear involute model 1 as an example, set forth the specific implementation of the invention:

[0039] The tooth surface to be regulated is a single tooth surface, that is, when the tooth surface to be regulated is A1-1:

[0040] The first step is to measure the initial tooth profile inclination deviation f of the tooth surface A1-1 to be controlled Hα =3.2μm, initial profile shape deviation f fα = 1.1μm, and separate the initial profile shape deviation f fα The profile crown deviation C in α = 0.3 μm;

[0041] In the second step, take the center of the initial base circle as the origin, and take the line connecting the initial base circle center and the involute at the base circle as the X-axis to establish a right-handed coordinate system, and use the installation eccentricity e of the gear involute template 1 along the Y-axis direction y Control tooth profile shape deviation f fα , mounting eccentric e y and tooth profile shape deviation f fα Satisfy:

[0042]

[0043] Among them, the initial expansion angle θ of the value range of the gear involute model b =0.05rad, the final expansion angle θ of the value range of the gear involute model e =0.65rad; the initial tooth profile shape deviation f fα =0.4μm Substitute into the above formula to get e y = 7.1 μm;

[0044] The third step is to measure the inclination deviation f' of the adjusted tooth profile of the tooth surface A1-1 to be adjusted Hα =5.9μm, tooth profile shape deviation f' after adjustment fα =0.9μm, and adjust the tooth profile tilt deviation f' Hα =5.9μm is compensated to the adjusted base circle radius:

[0045]

[0046] Among them, the initial base circle radius r b =100mm, valued length L α =60mm; base circle radius r after regulation bs =100.0098mm;

[0047] When in use, provide the adjusted tooth profile shape deviation f' fα and the adjusted base circle radius;

[0048] The tooth surface to be regulated is two opposite tooth surfaces, that is, when the tooth surface to be regulated is A1-1 and the tooth surface to be regulated is B1-2:

[0049] The first step is to measure the initial tooth profile inclination deviation f of the tooth surface A1-1 to be controlled and the tooth surface B1-2 to be controlled Hα1 = 2.9 μm, f Hα2 =2.5μm, initial tooth profile shape deviation f fα1 = 1.1 μm, f fα2 = 1.2μm; and separate the initial profile shape deviation f fα1 , f fα2 The profile crown deviation C in α1 = 0.2 μm, C α2 = 0.3 μm;

[0050] The second step is to establish a right-handed coordinate system with the center of the initial base circle as the origin, and the parallel line connecting the involutes at the two base circles passing through the origin as the X-axis. The tooth surface to be controlled is A1-1, and the tooth surface to be controlled is B1- 2 are respectively located in the second and fourth quadrants; use the installation eccentric component e of the gear involute template along the X-axis direction x Regulating tooth profile inclination deviation f Hα1 , f Hα2 , the tooth profile inclination deviation f of the tooth surface to be controlled Hα1 , f Hα2 Control to tend to be consistent, using the installation eccentric component e along the Y-axis direction y Control tooth profile convexity deviation C α1 、C α2 , reduce tooth profile shape deviation f fα1 , f fα2; Mounting eccentric component e x , install the eccentric component e y , Tooth profile crown deviation C α1 、C α2 , tooth profile inclination deviation f Hα1 , f Hα2 Satisfy:

[0051]

[0052]

[0053] Among them, the initial expansion angle θ of the value range of the gear involute model b =0.05rad, the final expansion angle θ of the value range of the gear involute model e =0.65rad, the angle between the tooth surface A1-1 to be regulated and the tooth surface B1-2 to be regulated is θ=155°; the initial tooth profile inclination deviation f Hα1 = 2.9 μm, f Hα2 =2.5μm, tooth profile convexity deviation C α1 = 0.2 μm, C α2 =0.3μm Substitute into the above formula to get e x = -1.0 μm, e y = 6.1 μm;

[0054] The third step is to measure the inclination deviation f' of the adjusted tooth profile of the tooth surface to be adjusted Hα1 =5.1μm, f' Hα2 =5.0μm, tooth profile shape deviation f' after adjustment fα1 =0.9μm, f' fα2 =0.8μm, and adjust the tooth profile inclination deviation f' Hα1 , f' Hα2 Compensate to the adjusted base circle radius:

[0055]

[0056] Among them, the initial base circle radius r b =100mm, valued length L α =60mm; base circle radius r after regulation bs =100.0042mm;

[0057] When in use, provide the adjusted tooth profile shape deviation f' fα1 , f' fα2 and the adjusted base circle radius;

[0058] Taking the above-mentioned regulation and control of the tooth surface A1-1 to be regulated and the tooth surface to be regulated B1-2 as examples, an active control method for the installation eccentricity of the gear involute model 1 is introduced:

[0059] Utilize an eccentric dense bead bushing for precision positioning related to the invention patent [201510560861] to equip a gear involute model standard device, and adjust the installation eccentricity e and eccentric phase of the gear involute model 1 through the eccentric dense bead bushing 3 Angle α, where, installation eccentricity e and eccentric phase angle α satisfy:

[0060]

[0061]

[0062] The installation eccentric component e in the X-axis direction calculated above x =-1.0μm, the installation eccentric component e in the Y-axis direction y =6.1 μm is substituted into the above formula to obtain e=6.1 μm, α=99.3°;

[0063] When in use, select the four-ball chamber of the eccentric dense ball bushing 3, among which, the two ball chambers on the adjacent side are each placed with 5 G5 grade steel balls with a diameter of 5.008mm and a divider value of 0.6μm, and the two ball chambers on the opposite side Place 5 G5 grade steel balls each with a diameter of 4.998mm and a gauge value of 0μm; install the eccentric dense bead bushing 3 between the gear involute model 1 and the model mandrel 2 according to the eccentric phase angle α=99.3°, and then The flat washer 4, the cross washer 5 and the lock nut 6 are sequentially installed on the model mandrel 2. The lock nut 6 is not completely tightened during the first installation. After assembling a gear involute model standard device, measure the gear involute first. The inclination deviation f' of the adjusted tooth profile of the tooth surface A1-1 to be regulated and the tooth surface B1-2 to be regulated at this time of the line model 1 Hα1 , f' Hα2 , after adjusting the tooth profile shape deviation f’ fα1 , f' fα2 , if the deviation of the tooth profile at this time does not meet the requirements, the gear involute model 1 can be rotated slightly to adjust the relative positions of the gear involute model 1, the model mandrel 2 and the eccentric dense bead bushing 3, and then measure the tooth profile again Deviation, after the tooth profile deviation meets the requirements, tighten the lock nut 6; this kind of gear involute model standard device has better rigidity and is easier to adjust.