Portable Threading Machine with Integrated Oil Sump

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Solution Overview

Problem

Existing portable threading machines are bulky, heavy, and costly due to their stationary design, making them difficult to transport and set up at job sites, and they often require additional support structures and oil management systems that increase complexity and cost.

Innovation Solution

A compact portable threading machine with a steel tube frame, wheels, and an extendable handle that allows for easy transport and setup, featuring a sump system to prevent oil spillage and a design that reduces weight and cost by using lower-cost materials for non-structural components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If threading machines are designed for stationary use with heavy bases and support structures, then structural stability and durability are improved, but portability and ease of transport deteriorate

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

Solution Approach 1:

The machine base is divided into modular components including a main body housing and detachable support legs. The support legs can be collapsed or removed for transport, while the main housing contains all essential threading components. This segmentation allows the machine to maintain structural integrity during operation while reducing weight and complexity for portability.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If threading machines include integrated oil reservoirs and support structures, then operational functionality is improved, but device complexity and cost increase

Engineering Contradiction:
Improveoperational functionalityVSAvoidstructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The oil reservoir is integrated directly into the machine base structure rather than being a separate component. The base housing simultaneously serves as the structural support, the oil containment reservoir, and the mounting framework for threading components. This merging eliminates the need for separate support structures and reduces overall device complexity while maintaining full operational functionality.

Inventive Principle:
Principle #5Merging (Combining)

3Strength

If threading machines use cast metal bases for structural support, then structural strength and durability are improved, but manufacturing cost and weight increase

Engineering Contradiction:
Improvestructural supportVSAvoidmanufacturing cost
Core Design Contradiction:
StrengthVSEase of manufacture

Solution Approach 1:

The machine base combines aluminum alloy casting for the main housing with steel reinforcement ribs and brackets in critical load-bearing areas. The aluminum provides corrosion resistance and adequate structural strength for the majority of the base, while strategic steel reinforcements add strength only where required for thread die mounting and support leg attachment. This composite approach reduces overall weight and manufacturing cost compared to full steel construction while maintaining necessary structural integrity.

Inventive Principle:
Principle #40Composite materials

Data Source

PatentUS9370835B2Portable compact threading machine
Publication Date: 2016.06.21 RIDGE TOOL CO
  • US9370835B2 patent drawing
  • US9370835B2 patent drawing
  • US9370835B2 patent drawing

AI summary

A powered threading machine is described. The threading machine is compact and portable. The threading machine includes a tube frame having a rearward wheel assembly and an extendable handle at the front of the machine. A particular sump configuration is used to prevent loss of cutting oil during operation and transport of the machine.