Antipollution Device Housing Forming Controller
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Solution Overview
Problem
Current methods for manufacturing antipollution device housings are time-consuming and costly due to inaccuracies in forming the main, end, and transition portions relative to the specific dimensions of the catalyst-bearing bricks and mats, leading to frequent failures and impaired performance.
Innovation Solution
An apparatus and method that use a controller and sets of members to engage the workpiece, receiving dimensional data for the bricks and mats to calculate and form the housing dimensions accurately, ensuring the mat is compressed to a preselected density and the end and transition portions are formed without deforming the main portion, using a machine head subassembly with finger and jaw elements to precisely shape the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional methods are used to form housing portions, then manufacturing is simpler, but manufacturing precision deteriorates due to inaccuracies in forming main, end, and transition portions
Solution Approach 1:
The housing formation process is segmented into distinct operations: forming the main portion with calculated dimensions, then separately forming end portions and transition portions. Each portion is formed by dedicated forming members that can be independently controlled, allowing precise formation of each segment without affecting others.
Solution Approach 2:
The main portion of the housing is formed first with calculated dimensions based on brick and mat measurements. This preliminary action establishes the reference framework before forming the end and transition portions, ensuring that subsequent portions are formed relative to accurate baseline dimensions.
2Productivity
If traditional forming methods are used, then process time is shorter, but productivity deteriorates due to frequent failures and rework
Solution Approach 1:
The system incorporates feedback through calculation of target dimensions based on actual brick and mat measurements. The controller receives dimensional data, calculates appropriate housing dimensions, and adjusts forming member positions accordingly, creating a closed-loop system that adapts to variations in component dimensions to ensure successful formation.
Solution Approach 2:
The forming process dynamically changes parameters including target dimensions, forming member positions, and compression forces based on measured brick and mat dimensions. This allows the system to adapt to each unique set of components, maximizing the probability of successful formation while minimizing rework.
3Manufacturing precision
If calculated dimensions are used for main portion, then manufacturing precision improves, but device complexity increases due to controller and measurement requirements
Solution Approach 1:
The controller serves multiple functions: receiving dimensional data from measurement devices, calculating target dimensions for the housing portions, controlling the positions of multiple forming members, and coordinating the sequential formation operations. This multi-functionality reduces the need for separate dedicated systems for each operation.
Solution Approach 2:
The controller acts as an intermediary between the measurement devices and the forming members. It receives raw dimensional data, processes it through calculations, and translates it into control signals for the forming members, simplifying the overall system architecture by centralizing the intelligence required for precise formation.
Data Source
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AI summary
An apparatus and a method for manufacturing a housing of an antipollution device including one or more bricks supported by one or more mats therein. One or more main portions are formed, the main portion of the housing defining a formed chamber in which the brick(s) compress the mat(s) between the brick(s) and the main portion to a predetermined density. One or more end portions are formed, for connection of the antipollution device in an exhaust system. When one or more transition portions are formed to connect the main portion(s) and the end portion(s), the main portion(s) is engaged by the apparatus to resist deformation of the formed chamber.