Rear Rail Datum Features for Variable Wheelbase Tuning
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Solution Overview
Problem
Existing vehicle manufacturing processes lack efficiency in producing vehicles with varying wheelbases using identical rear rail components, as they require multiple specific components and assembly variations, leading to increased production complexity and costs.
Innovation Solution
Incorporating multiple pre-determined datum features into a rear rail design that can engage a common geo-pallet pin, allowing for the production of vehicles with either short or long wheelbases using identical rear rail components, facilitated by a geo-pallet conveyor system and high pressure die casting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple specific rear rail components are used for different wheelbases, then manufacturing precision is maintained, but device complexity and production costs increase
Solution Approach 1:
The rear rail is designed with multiple pre-determined datum features that can engage with different geo-pallet pins to accommodate various wheelbase configurations. This universal design allows a single rear rail component to serve multiple functions for different vehicle platforms, eliminating the need for multiple specific rear rail components while maintaining manufacturing precision through the pre-determined datum features.
Solution Approach 2:
The invention changes the parameter of datum feature engagement by providing multiple pre-determined datum features at different positions on the rear rail. By selecting which datum feature engages with the geo-pallet pin, the effective wheelbase parameter is adjusted without changing the rear rail component itself, thus reducing device complexity while maintaining precision.
2Manufacturing precision
If multiple specific rear rail components are used for different wheelbases, then manufacturing precision is maintained, but production efficiency decreases
Solution Approach 1:
The universal rear rail design with multiple pre-determined datum features enables a single component to produce multiple wheelbase configurations. This eliminates the need for separate production lines or inventory management for different rear rail types, thereby improving production efficiency while maintaining precision through the engineered datum features.
Solution Approach 2:
The rear rail is segmented with multiple pre-determined datum features that can be independently engaged. This segmentation allows the manufacturing system to select the appropriate engagement point for different wheelbase requirements without requiring multiple complete rear rail components, thus streamlining production.
3Device complexity
If identical rear rail components are used for different wheelbases, then production complexity is reduced, but manufacturing precision may be compromised
Solution Approach 1:
Multiple pre-determined datum features are pre-engineered into the identical rear rail component at specific positions. This preliminary action ensures that when the geo-pallet pin engages with the appropriate datum feature, the correct wheelbase precision is achieved without requiring different rear rail components. The precision is built-in during manufacturing of the identical components.
Solution Approach 2:
The geo-pallet pin acts as an intermediary that selectively engages with different pre-determined datum features on the identical rear rail. This intermediary mechanism enables precise wheelbase configuration selection without compromising the integrity or precision of the rear rail component itself, resolving the contradiction between using identical components and maintaining precision.
Data Source
AI summary
A number of variations may include a method comprising providing a first design or a first reusable casting die for producing a vehicle rear rail having multiple pre-determined datum features; producing a first vehicle rear rail and a second vehicle rear rail from the first design or the first reusable casting die; wherein the first vehicle rear rail and the second vehicle rear rail are identical; using the first vehicle rear rail to make a first vehicle having a first wheelbase and using the second vehicle rear rail to make a second vehicle having a second wheelbase; and wherein the second wheelbase is longer than the first wheelbase.