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Selection of basic worm of gear hob

Gear hob is one of the most widely used high-efficiency gear machining tools. As shown in Figure 1, it is the basic structure diagram of gear hob. The basic worm of gear hob is on the spiral surface where the hob blade is located. The tooth structure of gear...

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Tooth surface detection formula of hourglass worm gear

Let the circumferential matching angle between the measuring coordinate system and the theoretical coordinate system be φ P. Then the coordinate value of the measured point in the theoretical coordinate system is: According to the coordinate value of the measured point in the theoretical coordinate system, the torus helix...

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Detection principle of hourglass worm gear tooth surface

In order to obtain the actual coordinate points of the hourglass worm tooth surface, the coordinate machine or gear measuring center can be used to measure it. Because the gear measuring center has a rotating c-axis, it has more flexibility in the measurement of hourglass worm. The measurement diagram...

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Tooth surface inspection of hourglass worm gear

The enveloping hourglass worm with variable tooth thickness involute gear is a new type of worm. At present, there is no project inspection standard. Due to the inconsistency of left and right tooth surfaces and the different tooth shape, tooth thickness and lead, the existing accuracy standards and inspection...

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Sample inspection of hourglass worm gear tooth surface

Based on the above measurement principle, the milling involute enveloping hourglass worm sample shown in Figure 1 is tested in the klingelberg P26 gear measurement center, as shown in Figure 2. Take the distance angle between measurements θ C is 60 °, The measured data are imported into the...

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Take you to learn industrial gear terms in depth

1.In general, what is the allowable center distance difference of spur gear? Generally, the tolerance of the reference value is taken as ± 0 2.Axial angle. The angle between the two shafts of the intersecting shaft gear (umbrella gear) and the intersecting shaft gear (intersecting shaft helical gear and...

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