Cycloid Transmission Phase-Synchronized Eccentric Cam Assembly
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Solution Overview
Problem
The existing cycloid transmission systems face challenges in maintaining precise phase alignment of eccentric cams on a rotary shaft, leading to noise and backlash due to phase shifts during machining and assembly.
Innovation Solution
The cycloid transmission design integrates the second input side and first output side eccentric cams to be fixed in the same phase, with the first input side eccentric cam in a different phase, and uses connection members to ensure synchronism between cycloid gears, preventing phase shifts and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If each eccentric cam is machined and assembled to the rotary shaft at predetermined phases, then the cycloid transmission can achieve proper gear engagement, but phase shift occurs during machining and assembly leading to noise and backlash
Solution Approach 1:
The patent merges the second input side eccentric cam and the first output side eccentric cam into a single integrated component. This ensures they rotate in strict synchronism without any phase shift, eliminating the noise and backlash caused by phase misalignment while maintaining proper gear engagement
2Ease of manufacture
If multiple eccentric cams are independently assembled to the rotary shaft, then assembly flexibility is improved, but phase shift occurs causing noise and backlash
Solution Approach 1:
By integrating two eccentric cams into one component, the patent eliminates phase shift issues while maintaining manufacturing ease. The integrated design ensures synchronous rotation without requiring precise separate assembly, thus preventing noise and backlash generation
3Ease of operation
If eccentric cams are fixed at different phases, then gear engagement patterns are optimized, but phase misalignment causes noise and backlash
Solution Approach 1:
The integration of the second input side eccentric cam and first output side eccentric cam ensures they maintain the correct phase relationship inherently through their combined structure, eliminating noise and backlash while preserving optimized gear engagement patterns
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
This design effectively minimizes noise and backlash by maintaining precise phase alignment, ensuring smoother operation and improved durability through reduced load on cycloid gears.
Implementation Method 1
first and second input side cycloid gears adjacent to each other, attached to outside of the first and second input side eccentric cams, respectively, and including a plurality of external teeth each including a cycloid curve formed on an outer periphery
Data Source
AI summary
In a cycloid transmission a second input side eccentric cam and a first output side eccentric cam are integrally fixed to a rotary shaft to be eccentric in the same phase, a first input side eccentric cam is fixed to the rotary shaft so that the first input side eccentric cam is eccentric in a phase different from that of the second input side eccentric cam and that of the first output side eccentric cam, a second output side eccentric cam is rotatably attached to the rotary shaft, a second input side cycloid gear and a first output side cycloid gear are integrally formed to be rotated in synchronism with each other in the same phase, and a first input side cycloid gear is connected to the second output side cycloid gear by a connection member to be rotated in synchronism with each other in the same phase.