Worm And Gear Dismounting Sleeve Structure for Coaxial Shaft Alignment
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Solution Overview
Problem
Existing dismounting devices for worms or gears on motor shafts are inconvenient to use, lack versatility, and prone to damaging the motor and the thimble due to misalignment and rough handling.
Innovation Solution
A dismounting device comprising a main housing with a dismounting cavity, an inner and outer sleeve, and a spacer, which ensures coaxial alignment of the drive shaft and thimble, using threaded connections and rounded structures for stability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If violent knocking is used for dismounting, then the dismounting process is simple and fast, but the motor is easily damaged
Solution Approach 1:
The patent introduces a dismounting device as an intermediary tool between the user and the motor. This device includes a main body with a cavity that holds the motor, a drive shaft insertion hole for positioning, and a thimble insertion hole for applying controlled force. The thimble acts as a mediator that distributes the dismounting force evenly, allowing violent knocking to be applied without directly damaging the motor components.
Solution Approach 2:
The device structure provides beforehand cushioning by incorporating the motor within a protective cavity and using the thimble as a force-distributing intermediary. This pre-arranged protective structure cushions the motor against the harmful effects of violent knocking before the force is applied, preventing damage while enabling fast dismounting.
2Adaptability or versatility
If fixed-form force-bearing thimbles are used, then the device structure is simple, but the thimbles cannot fit all motor products of different lengths
Solution Approach 1:
The patent applies dynamics by making the thimble detachable and replaceable rather than fixed. The thimble can be inserted and removed from the main body according to the specific motor length requirements. This dynamic configuration allows the same device structure to adapt to different motor products by simply changing the thimble component, without requiring a completely different device for each motor size.
Solution Approach 2:
The device is segmented into modular components: a main body and a detachable thimble. This segmentation allows the thimble to be independently selected and replaced based on the motor length requirements, providing versatility without complicating the overall device structure. Each component serves a specific function and can be optimized independently.
3Ease of operation
If thimble and drive shaft are aligned by hand feeling, then the operation process is simple, but slightly uneven stress will crush the thimble, damage the motor and injure the hands
Solution Approach 1:
The patent replaces the manual hand-feeling alignment method with a mechanical positioning system. The main body has a specifically designed drive shaft insertion hole that guides and constrains the drive shaft to the correct position. This mechanical guidance system automatically ensures accurate alignment between the thimble and drive shaft, eliminating the need for hand feeling and preventing misalignment-related damage.
Solution Approach 2:
The drive shaft insertion hole acts as an intermediary positioning element that mediates between the operator and the alignment process. It provides a fixed, pre-determined alignment path that ensures the thimble and drive shaft are coaxially aligned before force is applied, replacing the unreliable hand-feeling method with a reliable mechanical constraint.
Data Source
AI summary
A dismounting device for a worm or gear on a drive shaft includes a main housing provided with a dismounting cavity including first and second ends oppositely arranged. The first end is provided with a slot for inserting the drive shaft and the second end is provided with a dismounting assembly including an outer sleeve and an inner sleeve mounted inside the outer sleeve. The outer sleeve extends into the dismounting cavity through the second end and one end of the outer sleeve is provided with a first positioning hole being inserted by one end of the drive shaft. One end of the inner sleeve which is inserted into the outer sleeve is provided with a second positioning hole coaxially arranged with the first positioning hole. A thimble is mounted in the second positioning hole and runs through the first positioning hole and configured to abut the drive shaft.