Planetary Gearing Integral Casing Planet Arm
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Solution Overview
Problem
Existing planetary gearing designs are complex and costly due to the need for separate components and fasteners, which also complicate assembly and increase weight and potential reliability issues.
Innovation Solution
The planet wheel arm is integrally formed with the casing, reducing the number of parts and eliminating the need for fasteners, with a cast casing design that simplifies production and assembly, and includes a connecting web for easy machining and lubrication integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the planet wheel arm is separately manufactured and fastened to the casing using bolts and screws, then the assembly allows for modular construction and easier replacement, but the device complexity increases, production time increases, and additional fasteners are required
Solution Approach 1:
The planet wheel arm is integrally formed with the casing as a single piece, eliminating the need for separate manufacturing and assembly of these two components. This merging reduces the total number of parts and eliminates the need for fasteners while maintaining structural integrity
2Productivity
If the planet wheel arm is separately manufactured and assembled to the casing, then the components can be produced independently, but the assembly time increases and production costs increase due to additional fasteners
Solution Approach 1:
By integrating the planet wheel arm with the casing into a single component, the assembly process is simplified and production time is reduced. The elimination of separate fastening operations and reduced inventory of fasteners leads to lower production costs
3Reliability
If multiple fasteners are used to secure the planet wheel arm to the casing, then the connection is secure and reliable, but the weight of the overall assembly increases
Solution Approach 1:
The integral formation of the planet wheel arm with the casing eliminates the need for multiple fasteners, thereby reducing the overall weight of the assembly while maintaining connection reliability through the monolithic structure
4Ease of manufacture
If the planet wheel arm is separately manufactured and fastened to the casing, then the components can be manufactured using standard processes, but sealing between the planet wheel arm and casing becomes complex
Solution Approach 1:
By making the planet wheel arm an integral part of the casing, the sealing interface is eliminated or significantly simplified, as there is no separate component requiring sealing. This reduces sealing complexity while maintaining manufacturing simplicity
Data Source
AI summary
Planetary gearing, in particular multistage planetary gearing, is disclosed. The planetary gearing includes at least one drive shaft, an output shaft, a sun wheel, a ring gear, planet wheels assigned to the planetary gear train, a gear casing, in particular a multipart gear casing, a planetary gear train, in particular the second planetary gear train, comprising a planet wheel arm immovably arranged in a casing. The construction of such a planetary gearing is simplified compared to the prior art, thereby saving costs. This is achieved in that the planet wheel arm is integrally formed with a casing.