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Lead Error

Home » Topics » Inspection » Lead Error
  • July 1, 2001

    Measuring Base Helix Error on a Sine Bar

    Base helix error - the resultant of lead and profile errors is the measured deviation from the theoretical line of contact (Fig. 1). It can be measured in the same way that lead error on a spur gear is measured, namely, by setting a height gage to height H based on the radial distance r to a specified line of contact (Fig. 2), rotating the gear so as to bring a tooth into contact with the indicator on the height gage, and then moving the height gage along two or more normals to the plane of action. The theoretical line of contact on helical gear must be parallel to the surface plate, which is attained by mounting the gear on a sine bar (Fig. 3).
  • July 1, 1987

    Longitudinal Load Distribution Factor for Straddle- and Overhang-Mounted Spur Gears

    A pair of spur gears generally has an effective lead error which is caused, not only by manufacturing and assembling errors, but also by the deformations of shafts, bearings and housings due to the transmitted load. The longitudinal load distribution on a contact line of the teeth of the gears is not uniform because of the effective lead error.
  • July 1, 1985

    Dynamic Analysis of Straight and Involute Tooth Form

    The effect of load speed on straight and involute tooth forms is studied using several finite-element models.
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  • May 1, 1985

    Gear Inspection and Chart Interpretation

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Blog Posts

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    By Charles D. Schultz

    Words to Avoid this Time of Year

  • April 19, 2018
    By Charles D. Schultz

    Hunting for a Solution

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Authors

  • Charles schultz
    Charles D. Schultz
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