Internal Pipe Cutter With Interchangeable Clamps and Centering Cone
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Solution Overview
Problem
Existing methods for cutting pipes internally face difficulties such as varying sizes, centering, securing, abutting, driving, protecting, and removing the cutting apparatus, which are not efficiently addressed by current technologies.
Innovation Solution
The apparatus employs a cone for centering, knobs or a clamp for securing, a motor-driven wedge for cutting, and a clutch for protection, along with interchangeable attachment and clamping assemblies to accommodate varying pipe sizes, enabling precise and safe cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-size cutting apparatus is used, then the structure is simple, but it cannot cut pipes of varying sizes
Solution Approach 1:
The cutting apparatus is divided into a main body and interchangeable attachment assemblies. Each attachment assembly is configured for a specific pipe size range, allowing the apparatus to adapt to different pipe diameters by simply swapping attachments rather than redesigning the entire system.
Solution Approach 2:
The main body of the cutting apparatus is designed with universal features that can work with multiple types of attachment assemblies. The drive shaft, motor mounting, and control mechanisms serve multiple functions across different pipe sizes, reducing overall system complexity while maintaining versatility.
2Manufacturing precision
If the cutting apparatus is made to fit tightly in the pipe, then cutting precision is improved, but it becomes difficult to remove the apparatus
Solution Approach 1:
The apparatus employs dynamic positioning mechanisms including spring-loaded cutting members that can engage and disengage from the pipe wall. The feet and clamping members are designed to provide secure positioning during cutting while allowing for controlled release and removal afterward.
Solution Approach 2:
The cutting members are designed as separate, extractable components from the main apparatus body. This allows the cutting elements to be removed independently if needed, and the apparatus itself can be extracted from the pipe after cutting is complete without damaging either the pipe or the equipment.
3Productivity
If the cutting members are driven forcefully against the pipe, then cutting speed is improved, but the cutting members may be damaged by excessive force
Solution Approach 1:
Spring-loaded mechanisms are incorporated into the cutting member assembly to provide cushioning and force limitation. The springs allow the cutting members to engage the pipe wall with controlled force, preventing damage from excessive driving force while maintaining adequate cutting pressure.
Solution Approach 2:
The apparatus includes force sensing mechanisms that monitor the load on cutting members during operation. When excessive force is detected, the system automatically adjusts or stops the driving action to prevent damage, providing real-time feedback control for reliable operation.
Data Source
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AI summary
An apparatus (10) for cutting pipes (12) internally includes at least one cutting member (30), at least one drive member (42, 56, 64, 88, 90, 92, 94, 96, 98, 100, 102), at least one feed member (42, 44, 54, 62, 68, 70, 72, 69, 71, 73, 48, 74, 76, 78, 80, 82), and at least one clamping member (20, 32, 34, 106, 108, 112, 114, 116, 118, 120, 122). The at least one cutting member (30) cuts a pipe (12) internally. The at least one drive member (42, 56, 64, 88, 90, 92, 94, 96, 98, 100, 102) rotates the at least one cutting member (10) to cut the pipe (12) internally. The at least one feed member (42, 44, 54, 62, 68, 70, 72, 69, 71, 73, 48, 74, 76, 78, 80, 82) extends the at least one cutting member (30) against the pipe (12) and retracts the at least one cutting member (30) from the pipe (12) internally. The at least one clamping member (20, 32, 34, 106, 108, 112, 114, 116, 118, 120, 122) secures the apparatus to the pipe (12) internally.