Die-Cast Transmission Housing With Interrupted Centering Fitting
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Solution Overview
Problem
Existing transmission systems face challenges in cost-effective production with high variance, as they often require complex and costly machining processes for centering, limiting their scalability and diversity in gear designs.
Innovation Solution
A modular transmission system with a die-castable first housing part featuring an interrupted fitting as a centering means, allowing for stable mounting and accurate centering using bearing outer rings, enabling production of various gear stages with different center distances without additional parts, and facilitating the use of die-casting for cost-effective manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a continuous fitting is used for centering housing parts, then centering precision is improved, but manufacturing cost increases and die-casting becomes difficult
Solution Approach 1:
The continuous fitting is segmented into multiple discrete centering areas (first, second, and third centering areas) arranged circumferentially. This segmentation allows the die-casting slide to be pulled out in a straight line without interference from the fitting structure, while still providing sufficient centering precision through the distributed arrangement of multiple centering zones.
Solution Approach 2:
The centering function is transitioned from a continuous radial fitting to discrete circumferential zones. By arranging centering areas around the circumference rather than as a continuous radial structure, the design enables die-casting slide extraction in the axial direction while maintaining centering capability through the distributed circumferential arrangement.
2Device complexity
If housing parts are integrated into a single piece, then structural simplicity is improved, but production cost increases and variance capability decreases
Solution Approach 1:
The transmission housing is divided into multiple separable housing parts (first housing part and second housing part) that can be manufactured independently using die-casting. This segmentation reduces production costs by enabling efficient die-casting manufacturing and allows for modular assembly, while the first and second centering areas ensure precise alignment between the separated parts.
Solution Approach 2:
The interrupted fitting structure serves multiple functions: it provides centering precision through distributed centering areas, enables die-casting manufacturing by allowing slide extraction, and facilitates modular housing assembly. This multi-functionality resolves the contradiction between structural simplicity and manufacturing ease.
3Ease of manufacture
If a single housing design is used, then manufacturing simplicity is improved, but adaptability to different center distances decreases
Solution Approach 1:
The housing is segmented into modular parts that can be independently designed and manufactured. The first housing part contains the first centering areas while the second housing part contains the second and third centering areas, allowing flexible combination for different center distances while maintaining standardized die-casting manufacturing processes.
Solution Approach 2:
The centering system is designed with dynamic adaptability through the distributed arrangement of multiple centering areas. By selectively engaging different centering areas (first, second, or third) depending on the specific housing part combination, the system can accommodate various center distances while maintaining manufacturing simplicity through standardized components.
Data Source
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AI summary
The invention relates to a transmission, modular system, and method, wherein the transmission comprises at least one first housing part (1), wherein a continuous fitting (3) is provided on the first housing part (1) as a first centering means, particularly for centering the further housing part (20) provided on the housing part, wherein the first housing part (1) is configured such that it can be produced using the diecast method.