Among the 4300 users, a portion of the devices experienced ball shell slippage during rotation. This issue had not surfaced during our extended testing period, and initially, we even suspected it could be a software glitch. As we collected malfunctioning devices exhibiting this behavior, we embarked on an analysis to pinpoint the cause. Ultimately, upon disassembling the motor, we discovered that the POM gears used for transmission were slipping. Not all gears within the motor were metallic; areas subjected to considerable stress employed wear-resistant POM material for transmission gears to prevent motor lockup, overheating, or even fire hazards. However, the amount of force the POM gear can withstand is a parameter that must be meticulously determined during gear design.
One user who reported the issue on the REDDIT community experienced this particular scenario. We acknowledge that insufficiently rigorous testing in our earlier stages contributed to this. Nevertheless, these motor-related problems are indeed isolated cases, and the majority of devices are not affected by this motor issue.
Confronted with the evident insufficiency of motor torque causing the issue, our structural engineer custom-designed a torque testing platform specific to AIMICAT. We measured the required torque and then collaborated with the motor manufacturer to create motors with greater torque capacity. This ensured that even if users mistakenly added excessive amounts of cat litter, the device's normal functionality would remain unaffected. Consequently, such an issue will be entirely absent in Aimicat Pro.