Machine Tool Transmission Gears with Axial Adjustment
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Solution Overview
Problem
Conventional gear-based machine tool transmission systems suffer from frequent replacements due to tooth thickness reduction, leading to vibrations, noise, and increased maintenance costs as a result of wear and tear.
Innovation Solution
The machine tool transmission system incorporates transmission, positioning, and retaining gears with front and rear teeth of varying thickness, allowing for axial adjustment to maintain engagement and reduce wear, along with a helical arrangement for lubrication distribution to extend gear lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional gears are used for transmission, then the transmission system can operate initially, but the tooth thickness reduces over time due to wear, causing vibrations, noise, and requiring frequent replacements
Solution Approach 1:
The transmission gear is designed with movable teeth that can adjust their position axially. The teeth are not fixed in position but can move along the gear body to compensate for wear. This dynamic adjustment capability allows the gear to maintain proper meshing and transmission function even after prolonged operation, resolving the contradiction between initial operation reliability and long-term service life.
Solution Approach 2:
The invention changes the physical state of the gear teeth by making them movable rather than fixed. The teeth can shift their axial position to compensate for wear-induced thickness reduction. This parameter change (from fixed to movable) enables the gear to adapt to wear conditions and extend service life while maintaining operational reliability.
2Ease of manufacture
If gears with uniform tooth thickness are used, then manufacturing is simplified, but wear cannot be compensated leading to frequent replacements and increased maintenance costs
Solution Approach 1:
The gear teeth are segmented into multiple replaceable units rather than being a single fixed structure. Each tooth can be independently adjusted or replaced. This segmentation allows for easier maintenance and repair, as worn teeth can be replaced without replacing the entire gear, thus reducing maintenance frequency and costs while maintaining manufacturing feasibility.
Solution Approach 2:
The invention enables individual gear teeth to be discarded (replaced) when worn, while the main gear body is recovered and reused. This selective replacement approach reduces maintenance costs and frequency compared to replacing entire gears, while the manufacturing process remains relatively simple as only individual teeth need to be produced and installed.
3Device complexity
If fixed-position gear teeth are used, then the gear structure is simpler, but wear causes reducing tooth thickness and increasing gear intervals leading to vibrations and noise
Solution Approach 1:
The gear teeth are made dynamically adjustable in their axial position rather than being fixed. This allows the teeth to move and compensate for wear, maintaining proper meshing conditions and preventing the generation of vibrations and noise that would occur with fixed teeth. The added complexity of movability is minimal but effectively eliminates the harmful effects of wear.
Data Source
AI summary
A machine tool transmission system includes a driving assembly, a driven gear and at least one transmission gear, at least two positioning gears and at least two retaining gears. The driving assembly includes an input unit and a driving gear driven by the input unit. The transmission gear, positioning gears and retaining gears have respectively a plurality of transmission teeth, positioning teeth and retaining teeth that include respectively a front end tooth and a rear end tooth connecting to the front end tooth and formed at a thickness greater than that of the front end tooth.