Straight Edge Guide With Spring Clamp for Accurate Long Cuts

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Solution Overview

Problem

Existing woodworking cutting systems, such as band saws, table saws, circular saws, and miter saws, face issues with safety, accuracy, size, cost, portability, and ease of use, particularly when making long straight cuts or handling large sheets of material.

Innovation Solution

A straight edge guide system featuring a guide member with a clamp and adjustable stop, providing a spring bias for secure clamping and precise alignment, allowing for efficient and accurate cutting operations across various workpiece sizes and materials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a band saw is used for cutting, then intricate shapes can be cut, but long straight cuts are not accurate and the blade is easily moved by wood grains

Engineering Contradiction:
Improvestraight cut accuracyVSAvoidblade stability
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

A straight edge guide is introduced as an intermediary component between the cutting blade and the workpiece. The guide provides a stable reference surface that the blade follows, preventing the blade from being deflected by wood grains or other irregularities. This mediator ensures consistent straight cut accuracy while the blade maintains its cutting capability.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If a table saw is used for cutting, then straight cuts can be made with precision, but the exposed blade is dangerous and the device is large and not portable

Engineering Contradiction:
Improvestraight cut precisionVSAvoidblade exposure danger
Core Design Contradiction:
Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The dangerous rotating blade mechanism is extracted from the portable device. Instead of incorporating an exposed blade, the invention uses a guide member that works with a separate cutting tool. The guide provides the precision alignment functions of a table saw while eliminating the hazard of an exposed rotating blade in a portable setting.

Inventive Principle:
Principle #2Taking out (Extraction)

3Ease of operation

If a circular saw is used for cutting, then the tool is portable and inexpensive, but long straight cuts are difficult to make accurately

Engineering Contradiction:
ImproveportabilityVSAvoidlong straight cut accuracy
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

A straight edge guide serves as a mediator between the portable circular saw and the workpiece. The guide provides a rigid reference edge that the saw operator follows to ensure straight cuts over long distances. This allows the operator to maintain the portability and simplicity of a circular saw while achieving the straight cut accuracy previously only available from larger, less portable equipment.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Manufacturing precision

If a straight edge guide is added to improve cutting accuracy, then cut precision improves, but device complexity increases

Engineering Contradiction:
Improvecut accuracyVSAvoidguide system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The straight edge guide system is segmented into separate, simple components: a guide member with a flat reference surface, a clamp for attachment to the workpiece, and an adjustable stop. This segmentation allows each component to perform a single function simply, avoiding the need for complex integrated mechanisms while still providing improved cut accuracy through the combination of these straightforward elements.

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 system enhances safety, accuracy, and ease of use by enabling precise and efficient long straight cuts on diverse materials, combining the benefits of circular and table saws in a compact, portable, and cost-effective design.

Implementation Method 1

An adjustable stop member is connected to the guide member that moves between a locked position and a free position. When the adjustable stop member is in the free position, the adjustable stop member slides along the length of the guide member. When the straight edge guide system is placed on top of a workpiece, the workpiece is clamped under spring bias force between the clamp member and the stop member.

Methodology Applied
Scientific EffectSpring bias force: Spring

Data Source

PatentUS12172259B2Straight edge guide
Publication Date: 2024.12.24 KREG ENTERPRISES INC
  • US12172259B2 patent drawing
  • US12172259B2 patent drawing
  • US12172259B2 patent drawing

AI summary

A straight edge guide system is presented that makes clamping of a workpiece faster and easier. The straight edge guide system includes a guide member that extends a length from a first end to a second end. A clamp member is connected to the first end of the guide member and includes a compressible bias member therein. An adjustable stop member is connected to the guide member that moves between a locked position and a free position. When the adjustable stop member is in the free position, the adjustable stop member slides along the length of the guide member. When the straight edge guide system is placed on top of a workpiece, the workpiece is clamped under spring bias force between the clamp member and the stop member.