Vehicle Hub Machining Layout for Precision With Less Downtime
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Solution Overview
Problem
Conventional machining apparatuses for vehicle hubs are inefficient due to complex structure, long downtime for tool replacement, and reduced productivity, especially in maintaining small position and concentricity tolerances, which requires multiple machines and frequent tool changes.
Innovation Solution
A compact apparatus with rotating tables and synchronized transfer groups allows for simultaneous machining of both sides of the hub, reducing overall dimensions and enabling tool changes during operation, thus enhancing productivity and simplifying swarf management and lubrication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple independent machines are used to machine both sides of the hub, then machining precision can be maintained, but device complexity and overall dimensions increase significantly
Solution Approach 1:
The patent combines multiple machining operations for both sides of the hub into a single integrated apparatus with one rotating table and multiple machining stations. This merging eliminates the need for separate independent machines while maintaining precision through centralized control and coordinated machining operations.
Solution Approach 2:
The apparatus segments machining operations into distinct stations arranged around a single rotating table, with each station performing specific operations on different sides of the hub. This segmentation allows precise control of each operation while maintaining overall system compactness.
2Manufacturing precision
If multiple independent machines are used for machining operations, then machining precision can be maintained, but overall dimensions and footprint of the apparatus increase
Solution Approach 1:
The patent transitions from a linear arrangement of independent machines to a radial configuration with machining stations arranged around a rotating table. This dimensional change from linear to circular layout reduces the apparatus footprint while maintaining all necessary machining capabilities.
Solution Approach 2:
Multiple machining operations that would require separate machines are merged into a single integrated apparatus, significantly reducing the overall footprint while maintaining precision through coordinated operations at different stations around the rotating table.
3Device complexity
If conventional apparatus with separate machines is used, then each machine can be simple in structure, but productivity decreases due to long downtime for tool replacement
Solution Approach 1:
The rotating table and machining stations are designed with universal tooling capabilities, allowing different tools to be quickly exchanged at any station without affecting other operations. This multi-functionality enables rapid tool replacement while maintaining structural simplicity through standardized interfaces.
Solution Approach 2:
The apparatus enables continuous operation by allowing tool replacement at one station while other stations continue machining operations. The synchronized transfer mechanism ensures that tool maintenance does not interrupt the overall production flow, maintaining continuous useful action.
4Manufacturing precision
If machining operations are performed in sequence on different machines, then each operation can be optimized, but loss of time increases due to waiting and transfer operations
Solution Approach 1:
The apparatus maintains continuous useful action by performing machining operations on multiple hubs simultaneously at different stations around the rotating table. The synchronized transfer mechanism ensures no waiting time between operations, as each hub progresses through the machining sequence continuously.
Solution Approach 2:
Multiple hubs are prepared and positioned at different stations in advance, with preliminary machining operations completed while other hubs are being processed. This preliminary action at parallel stations eliminates waiting time and maintains continuous production flow.
Data Source
Figure 1
Figure 2~4
AI summary
Apparatus for machining hubs for vehicles, comprising: - a first machining group (11) having a first number (n1) of first stations which comprise at least a first machining station (111, 112, 113, 114), an inbound transfer station (11a), an outbound transfer station (11b), a loading station (117) and an unloading station (118); - a second machining group (12) having a second number (n2) of second stations which comprise at least one second machining station (121, 122, 123, 124, 125, 126, 127, 128), an inbound transfer station (12a) and an outbound transfer station (12b); - a first rotating table (13) having a number of first workpiece-holder sectors (131) equal to the first number (n1); where the first machining group (11) and the first rotating table (13) are mutually arranged in such a way that the first sectors (131) can face the first stations; - a second rotating table (14) having a number of second sectors (141) equal to said second number (n2); the second machining group (12) and the second rotating table (14) are mutually arranged in such a way that the second sectors (141) can face the second stations; - a first transfer group (15) for transferring workpieces between the first machining group (11) and the second machining group (12).