Pipe T-Branch Punching for Clean Internal Welding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for creating T-branches in pipes, such as drilling and punching, result in inefficiencies due to the production of chips and the need for cutting fluids, which complicates the process and environmental cleanup, and are slow for smaller branch pipes.
Innovation Solution
A method and device that uses a punch to create a hole in the main pipe with a dry mechanical process, supported by retaining jaws and an expandable inner support, allowing internal welding without additional materials, ensuring the joint areas remain clean and weldable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If drilling is used to make a hole in the main pipe, then the hole can be created, but chips and cutting fluid are produced requiring cleanup and washing
Solution Approach 1:
The invention extracts and removes the harmful elements (chips and cutting fluid) from the manufacturing process by replacing drilling with a punching method that creates a clean hole without material removal in the form of chips, thus eliminating the need for cutting fluid and subsequent cleanup operations
Solution Approach 2:
The invention replaces the drilling mechanical system with a punching mechanical system. Instead of rotating cutters removing material as chips, a punch directly forces material through the pipe wall, achieving hole creation without generating chips or requiring cutting fluid
2Ease of manufacture
If drilling is used to make a hole in the main pipe, then the hole can be created, but the production speed is slow
Solution Approach 1:
The invention replaces the slow drilling process with a rapid punching operation. The punch directly forces material through the pipe wall in a single or few strokes, eliminating the gradual material removal process of drilling and significantly increasing production speed
Solution Approach 2:
The punching process allows for continuous production by eliminating the need for intermediate steps such as chip removal and part washing. The hole is created cleanly in one operation, allowing immediate progression to the next manufacturing step, thus maintaining continuous productive action
3Productivity
If punching with a round punch is used to make a hole, then the hole can be created quickly, but the branch pipe must be smaller than the main pipe
Solution Approach 1:
The invention changes the punch geometry from round to oval, creating an oval hole that can accommodate branch pipes of various sizes. This asymmetric hole shape allows the branch pipe to be inserted and positioned flexibly, removing the size constraint that existed with round holes
Solution Approach 2:
The invention applies different geometric properties to different parts of the hole: the oval shape provides flexibility for branch pipe insertion, while the edges are formed with specific characteristics (through the punching process) that enable proper welding. This localized optimization of hole geometry solves both the size adaptability and welding requirements
4Device complexity
If internal welding is performed without welding additive, then the process is simplified, but sufficient material must remain around the hole edges
Solution Approach 1:
The punching process is designed to pre-form the hole edges with the exact geometry and material distribution needed for successful internal welding. By controlling the punch geometry and punching parameters, the edges are prepared in advance with sufficient material thickness and proper shape, eliminating the need for additional material or complex welding procedures
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 a clean, efficient, and rapid production of T-branches by eliminating the need for cutting fluids and simplifying the mechanical steps, ensuring a suitable overlap for internal welding without additives.
Implementation Method 1
the hole for the branch pipe is cut with a punch, which is moved perpendicularly against the central axis of the main pipe
Implementation Method 2
the main pipe being supported from the outside with retaining jaws, the main pipe being supported around the hole to be cut from the inside with an expandable inner support
Implementation Method 3
the joint seam between the pipes is welded by internal welding without a welding additive
Data Source
AI summary
The invention relates to a method and device for making a T-branch for a pipe by joining the shaped end of the branch pipe with internal welding to the ed-ges of a hole in the main pipe. The hole in the main pipe (T) and the arcs corresponding to the main pipe at the end of the branch pipe (P) are mechanically cut by removing one solid part from the hole and two (22) solid parts from the end of the branch pipe in a dry mechanical process, in which the cleanliness of the joint areas remains weldable. The shaped end of the branch pipe (P) is placed around the hole in the main pipe (T) and the joint seam between the pipes is welded by internal welding without a welding additive. A branch hole suitable for this is made by punching perpendicularly against the central axis of the main piped so that punch (1) pushes the piece that detaches from the main pipe into the punch hole (10) of the inner support (9).