Thread Rolling Distance Adjustment via Worm-Eccentric Drive
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Solution Overview
Problem
Existing thread rolling machines face difficulties in easily and precisely adjusting the thread-rolling distance due to the need for excessive force and laborious manual adjustments, and the limitations of threaded units with small outer diameters, which restrict precise adjustments.
Innovation Solution
An adjustment device with a worm assemblage and regulating unit that allows for easy and precise adjustment of the thread-rolling distance by using a worm shaft and drive assemblage to change the position of a positioning portion within a through hole, facilitated by a drive unit and linking portion, enabling synchronous rotation and reducing manual effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a small outer diameter regulating unit is used, then the device size is reduced, but excessive force is required for rotation and adjustment precision deteriorates
Solution Approach 1:
A worm gear mechanism is introduced as an intermediary between the regulating unit and the drive units. The worm gear includes a worm wheel meshed with the drive units and a worm shaft connected to the regulating unit, providing mechanical advantage that reduces the force required for rotation while maintaining precise control over the thread-rolling distance adjustment.
2Volume of moving object
If a small outer diameter regulating unit is used, then the device size is reduced, but adjustment precision deteriorates
Solution Approach 1:
The worm gear mechanism acts as a precision transmission intermediary, where the worm shaft and worm wheel provide a high reduction ratio. This allows the small regulating unit to achieve precise control over the drive units' rotation, thereby maintaining accurate thread-rolling distance adjustment despite the reduced size of the regulating unit.
3Volume of moving object
If threaded units with small outer diameter are used, then the device structure is compact, but the strength of threaded units is insufficient for bearing force
Solution Approach 1:
The worm gear mechanism serves as a force amplification intermediary. The worm wheel with larger diameter provides sufficient strength to bear the operational forces, while the worm shaft transmits the rotational motion from the small regulating unit. This intermediary arrangement allows compact threaded units to function effectively with adequate strength.
4Device complexity
If manual rotation of regulating units is used, then the structure is simple, but the adjustment process is laborious and time-consuming
Solution Approach 1:
The worm gear mechanism introduces a mechanical advantage intermediary that amplifies the rotational motion from the regulating unit. This allows operators to achieve the required adjustment of thread-rolling distance with minimal effort and faster speed, significantly improving productivity while maintaining relatively simple mechanical structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy and precise adjustment of the thread-rolling distance, simplifying the adjustment process and reducing manual labor, while maintaining structural integrity and allowing for efficient processing of workpieces with varying sizes.
Implementation Method 1
a worm assemblage installed on the housing. The worm assemblage has a worm shaft installed on the housing and meshed with the drive assemblage
Data Source
AI summary
An adjustment device is connected to a transmission device of a thread rolling machine. The transmission device includes an eccentric wheel and a transmission shaft. The adjustment device includes a drive assemblage and a worm assemblage linked with the transmission shaft. The worm assemblage includes a worm shaft meshed with the drive assemblage and a regulating unit disposed on the worm shaft. The drive assemblage includes a first drive unit disposed on a first shaft end of the transmission shaft and defining a positioning portion whose center is situated away from a center of the first drive unit to present an eccentric arrangement. Accordingly, the cooperation between the drive assemblage and the worm assemblage allows a thread-rolling distance applied to the thread rolling machine to be easily and precisely adjusted.