Pie Cut Piping Segments for Curved Assembly
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Solution Overview
Problem
Existing methods for bending exhaust pipes require significant skill and specialized equipment, and custom-made pie cut pieces are necessary for creating curved sections, limiting accessibility and standardization.
Innovation Solution
Pre-manufactured pie cut pieces with complementary internal cutouts for an interlocking friction fit, allowing for easy assembly into curved sections, which can be sealed with welding or other means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If custom-made pie cut pieces are used for each specific job, then the piping can be precisely fitted to create desired curved sections, but the manufacturing complexity and time increase significantly
Solution Approach 1:
The piping system is divided into standardized pie cut segments with predetermined angles and dimensions. Each segment is a discrete unit that can be manufactured independently using standard equipment, eliminating the need for custom fabrication of entire curved sections while maintaining the ability to create various shapes through combination of standard segments.
Solution Approach 2:
A universal set of pie cut segments with standard angles (e.g., 15°, 30°, 45°) is created that can be used to form multiple different curved configurations. The same standardized segments can assemble to create various radii and curvature profiles, making the system multi-functional for different piping layout requirements.
2Manufacturing precision
If custom-made pie cut pieces are fabricated for each job, then precise fit is achieved, but the time and skill required for assembly increase
Solution Approach 1:
The pie cut segments are pre-manufactured with precise cuts and standardized dimensions before delivery to the job site. The precise fitting geometry is established during mass production rather than during field assembly, reducing the time and skill required for on-site installation while maintaining high precision fit.
Solution Approach 2:
Standardized parameters for pie cut angles, segment dimensions, and connection geometries are established. By fixing these parameters across all segments, the system achieves consistent precision without requiring custom measurement and adjustment for each piece during assembly.
3Shape
If specialized equipment such as pipe benders is used, then pipe bending can be achieved, but the equipment cost and complexity increase
Solution Approach 1:
Instead of using specialized pipe bending equipment to form continuous curved pipes, the system segments the pipe into discrete pie cut sections that are joined together. This eliminates the need for expensive pipe benders while achieving the same functional result through assembly of standardized segments.
Solution Approach 2:
The mechanical pipe bending process is replaced with a modular assembly process. Rather than applying force to bend continuous pipe material using specialized equipment, the system uses pre-cut segments that are mechanically joined together to form the desired curve, substituting a complex mechanical bending system with a simpler assembly system.
4Adaptability or versatility
If pie cuts are made on-site with high skill requirement, then custom curved sections can be created, but the operational difficulty increases
Solution Approach 1:
The complex pie cutting and fitting operations are performed in advance during manufacturing, not during field installation. Workers at the job site simply assemble pre-prepared segments rather than performing skilled pie cutting operations, dramatically reducing operational difficulty while maintaining the ability to create custom curves.
Solution Approach 2:
Standardized pie cut segment designs are replicated across multiple units with consistent geometry and dimensions. Rather than requiring workers to create unique custom cuts for each application, the same proven segment designs are copied and assembled in different configurations to achieve various custom curve requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables standardized, aesthetically versatile, and easily assembled curved piping sections, making it possible for shops without specialized skills or equipment to create artistic pipe bends, enhancing competitiveness and accessibility.
Implementation Method 1
the cutouts from one piece are complementary to the cutouts of an adjacent piece so that the pieces connect by an interlocking friction fit
Data Source
AI summary
Pre-manufactured pie cut pieces provide internal cutouts such that the cutouts from one piece are complementary to the cutouts of an adjacent piece so that the pieces connect by an interlocking friction fit. A series of pie cut pieces can be connected this way in concatenated fashion to produce a section of curved piping. The joints between the joined pieces can be sealed by welding or other suitable sealing means.