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What problems can arise when machining precision gears

What problems can arise when machining precision gears

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  • Time of issue:2021-12-17 08:29
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(Summary description)A technical guideline that occurs during precision gear machining is fatigue pitting, or fatigue wear. After the gear is stressed, the tooth surface will generate combat stress, and the combat stress of the tooth surface will fluctuate and change repeatedly. During operation, under the action of superimposed combat stress, small fatigue cracks appear on the tooth surface, the cracks continue to extend and expand, and the metal chips fall off the tooth surface to form point-shaped pits.

What problems can arise when machining precision gears

(Summary description)A technical guideline that occurs during precision gear machining is fatigue pitting, or fatigue wear. After the gear is stressed, the tooth surface will generate combat stress, and the combat stress of the tooth surface will fluctuate and change repeatedly. During operation, under the action of superimposed combat stress, small fatigue cracks appear on the tooth surface, the cracks continue to extend and expand, and the metal chips fall off the tooth surface to form point-shaped pits.

  • Categories:Technical Guide
  • Author:
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  • Time of issue:2021-12-17 08:29
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A common problem that occurs during precision gear machining is fatigue pitting, or fatigue wear. After the gear is stressed, the tooth surface will generate combat stress, and the combat stress of the tooth surface will fluctuate and change repeatedly. During operation, under the action of superimposed combat stress, small fatigue cracks appear on the tooth surface, the cracks continue to extend and expand, and the metal chips fall off the tooth surface to form point-shaped pits.
 
When fatigue pitting occurs on the tooth surface, the vibration and noise will become larger, which will affect the normal production. Non-expandable pitting corrosion will also occur during precision gear machining. When the pitting corrosion occurs, it will continue to expand, and then expand the pitting corrosion. For steel gears forged by case quenching and case carburizing quenching, fatigue cracks on the tooth surface generally appear at the intersection of the hardened hard layer and the soft core. , and the appearance of pitting corrosion on the tooth surface is different, the area and depth of the spalling pit are larger than those of pitting corrosion.
 
In order to slow down and prevent the phenomenon of fatigue pitting in precision gear machining, we can try to solve it by increasing the hardness of the tooth surface, changing the performance of the lubricating oil, adopting the angular displacement transmission method, and improving the contact accuracy of the gear.

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Next: Common faults and solutions of DC geared motors
Previous: Solutions to Gearbox Transmission Failures
Next: Common faults and solutions of DC geared motors

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