Modular Pipe Lathe Subassembly with Segmented Gear Ring

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional pipe lathes have complex, heavy, and monolithic gear components that complicate maintenance, repairs, and upgrades, leading to increased weight and longer repair times.

Innovation Solution

A modular pipe lathe subassembly featuring a segmented base ring, a drive gear assembly, and a separate ring member with apertures for fastening, allowing for quick assembly and disassembly, reducing weight and enabling easy modifications and replacements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a monolithic main gear ring assembly is used, then structural strength and rigidity are improved, but weight increases and repair time increases

Engineering Contradiction:
Improvestructural strengthVSAvoidweight
Core Design Contradiction:
StrengthVSWeight of moving object

Solution Approach 1:

The main gear ring assembly is divided into separate components: a gear ring portion with gear teeth and a separate ring member, which can be assembled and disassembled independently. This segmentation reduces the overall weight while maintaining structural integrity through proper connection mechanisms.

Inventive Principle:
Principle #1Segmentation

2Stability of the object's composition

If a monolithic main gear ring assembly is used, then structural rigidity is improved, but ease of repair deteriorates

Engineering Contradiction:
Improvestructural rigidityVSAvoidrepair time
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

By separating the gear ring from the ring member, individual components can be inspected, repaired, or replaced without dismantling the entire assembly, significantly reducing repair time while maintaining rigidity through precise reassembly.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The gear ring portion can be extracted and removed from the assembly for separate repair or replacement, allowing maintenance personnel to service only the affected component rather than the entire monolithic structure.

Inventive Principle:
Principle #2Taking out (Extraction)

3Ease of manufacture

If a monolithic main gear ring assembly is used, then manufacturing simplicity is maintained, but adaptability deteriorates

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidmodifiability
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The segmented design allows different ring members or gear ring configurations to be assembled together, enabling easy modification and adaptation for different machining requirements while keeping individual component manufacturing relatively simple.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The separate ring member can be designed with universal mounting features that accommodate various tool assemblies, making the overall assembly adaptable to different machining operations without requiring complete redesign.

Inventive Principle:
Principle #6Universality (Multi-functionality)

4Strength

If a monolithic main gear ring assembly is used, then structural integrity is improved, but device complexity increases

Engineering Contradiction:
Improvestructural integrityVSAvoidcomponent complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

While dividing the assembly into components, the connection mechanisms are designed to be relatively simple, reducing the overall device complexity compared to a monolithic structure while maintaining structural integrity through proper joint design.

Inventive Principle:
Principle #1Segmentation

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

The modular design reduces weight, facilitates quicker repairs and upgrades, and allows for job-specific modifications, enhancing operational efficiency and reducing downtime.

Implementation Method 1

a number of bearing assemblies, each bearing assembly being disposed within a corresponding one of the bearing slots

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

a plurality of fasteners extending through the apertures of the separate ring member and fastening the separate ring member to the gear ring

Methodology Applied
Scientific EffectMechanical Fastener: Mechanical Fastener

Data Source

PatentUS8584558B2Pipe lathe and subassembly therefor
Publication Date: 2013.11.19 FURMANITE WORLDWIDE INC
  • US8584558B2 patent drawing
  • US8584558B2 patent drawing
  • US8584558B2 patent drawing

AI summary

A subassembly is provided for a pipe lathe. The pipe lathe includes a segmented base ring and a drive gear assembly. The segmented base ring is structured to be removably coupled to a work piece having a perimeter. The subassembly includes a gear ring, a separate ring member, at least one tool mounting portion disposed on the separate ring member, and a plurality of fasteners. The fasteners extend through the apertures of the separate ring member and fasten the separate ring member to the gear ring, in order that the separate ring member rotates with the gear ring but not independently with respect thereto. A number of tool assemblies mount to the tool mounting portion to machine the work piece. The gear ring includes a plurality of teeth, which cooperate with the drive gear assembly of the pipe lathe to rotate the subassembly about the perimeter of the work piece.