Portable Pipe Cutting Tool with Sequential Grooving and Chamfering
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Solution Overview
Problem
Existing methods for connecting thermoplastic pipes are inefficient and costly for maintenance, particularly when accessing piping systems for repairs, as they require complex and time-consuming processes to ensure a durable and leak-proof seal.
Innovation Solution
A portable cutting tool with multiple cutting elements, including chamfering, grooving, and cutting members, that sequentially engages the pipe to reduce peak load on the motor, allowing for a lighter design and easier portability, while also enabling the tool to handle different pipe diameters and materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single cutting element is used to cut the pipe, then the cutting process can be completed in one operation, but the peak load on the motor increases requiring a heavier motor design
Solution Approach 1:
The cutting process is divided into multiple sequential operations using separate cutting elements: a first cutting element creates a relief groove, a second cutting element creates a sealing groove, and a third cutting element performs the final cut. This segmentation distributes the cutting load across multiple lighter motor operations rather than requiring one heavy-duty cutting operation, reducing peak motor load and allowing for a lighter motor design.
2Ease of operation
If the pipe is clamped and rotated during cutting, then all cutting operations can be performed from one position, but the tool requires more complex positioning mechanisms and reduces portability
Solution Approach 1:
Instead of rotating the pipe to present different surfaces to a single cutting tool, the invention inverts the approach by using multiple cutting elements positioned at different locations that sequentially engage the pipe while it remains stationary in the clamping mechanism. The pipe is clamped between rollers that hold it fixed, and the cutting elements are positioned to create grooves and cuts at different angular positions without requiring pipe rotation or tool repositioning.
3Power
If multiple cutting elements are used to sequentially engage the pipe, then the peak load on the motor is reduced, but the device complexity increases
Solution Approach 1:
Multiple cutting elements performing different functions (relief groove creation, sealing groove creation, and final cutting) are merged into a single integrated cutting apparatus. All cutting elements are mounted on the same apparatus and engage the pipe sequentially during a single clamping operation, combining multiple functions into one device without requiring separate tools or complex repositioning mechanisms.
Data Source
AI summary
An apparatus for cutting a pipe has a base comprising a pipe support having at least one set of lower rollers and an upper frame supporting a cutting apparatus and at least one upper roller. The upper frame is moveable relative to the base between an open position in which the pipe may be inserted between the at least one set of lower rollers and the at least one upper roller, and a clamping position in which the pipe is in contact with the at least one set of lower rollers and the at least one upper roller. The cutting apparatus comprises a grooving member configured to provide an annular groove on an outer surface of the pipe, a cutting member configured to cut the pipe, and a chamfering member configured to provide a chamfer on the outer surface of the pipe between a location of the annular groove and a location of the cut in the pipe.