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13380409591Email:chhongsheng@126.comAddress:Beiwan Industrial Zone, Lianxia Town, Chenghai District, Shantou City, Guangdong Province, China
13380409591Email:chhongsheng@126.comAddress:Beiwan Industrial Zone, Lianxia Town, Chenghai District, Shantou City, Guangdong Province, China -
13380409591Email:chhongsheng@126.comAddress:Beiwan Industrial Zone, Lianxia Town, Chenghai District, Shantou City, Guangdong Province, China -
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13380409591Email:chhongsheng@126.comAddress:Beiwan Industrial Zone, Lianxia Town, Chenghai District, Shantou City, Guangdong Province, ChinaSummary of maintenance issues for plastic gears
Release time:
2024-02-28 08:45
Source:
Have you noticed these points about the equipment products and plastic gears you usually purchase? Can extend the overall lifespan! If plastic gears fail, it will affect the entire equipment, so we need to pay attention to the maintenance of plastic gears. Now let's follow Shunjie's editor and pay attention to these points where gears are prone to failure!
1. Tooth surface wear
For open gear transmission or closed gear transmission containing unclean lubricating oil, due to the relative sliding between the meshing tooth surfaces, some harder abrasive particles enter the friction surface, causing changes in tooth profile, increased backlash, and excessive thinning of the gear leading to tooth breakage. In general, only when abrasive particles are mixed in the lubricating oil will it cause tooth surface abrasive wear during operation.
2. Tooth surface bonding
For high-speed and heavy-duty gear transmission, due to the high friction and relative speed between the tooth surfaces, the temperature in the meshing area is too high. Once the lubrication conditions are poor, the oil film between the tooth surfaces will disappear, causing direct contact between the metal surfaces of the two teeth and resulting in mutual adhesion. When the two tooth surfaces continue to move relative to each other, the harder tooth surface tears off some of the material on the softer tooth surface along the sliding direction, forming grooves.
Shunjie pays attention to the maintenance of plastic gears and these issues
3. Fatigue pitting
When two meshing teeth come into contact, the force and reaction force between the tooth surfaces cause contact stress on the two working surfaces. Due to the changing position of the meshing point and the periodic motion of the gear, the contact stress changes in a pulsating cycle. Under the action of this alternating contact stress for a long time, small cracks will appear at the tool marks on the tooth surface. Over time, these cracks gradually expand laterally on the surface, forming a ring shape, causing small areas of peeling off on the surface of the gear teeth and forming some fatigue shallow pits.
Plastic gear
4. Tooth breakage
In the operation of engineering, gears that bear loads are like cantilever beams. When the periodic stress at the root of the gear exceeds the fatigue limit of the gear material, cracks will occur at the root and gradually expand. When the remaining part cannot withstand the transmission load, tooth breakage will occur. Gears may also experience tooth breakage due to severe impacts, unbalanced loads, and uneven materials during operation.
5. Plastic deformation of tooth surface
Under impact loads or heavy loads, the tooth surface is prone to local plastic deformation, resulting in deformation of the surface of the involute tooth profile.
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