Miter Saw Pivotable Supporters for Broader Workpiece Stability

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Solution Overview

Problem

Conventional sliding miter saws lack stability when cutting broader workpieces, as the extended arm cannot adequately support the portion of the workpiece that juts out beyond the rotatable table, affecting cutting performance and safety.

Innovation Solution

A miter saw design featuring two pivotable supporters mounted on the rotatable table, which can be extended to support broader workpieces and stowed when not needed, improving stability and safety by providing additional support to the workpiece and reducing the risk of injury.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the extended arm is used to support broader workpieces, then the workpiece can be supported beyond the rotatable table, but the stability and safety of the cutting operation deteriorates

Engineering Contradiction:
Improvecapability to cut broader workpiecesVSAvoidstability and safety of cutting operation
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The support function is segmented between the extended arm and additional support arms. The extended arm provides primary support while the support arms provide secondary stabilization for the overhanging portion of the workpiece, dividing the support task into multiple structural elements working together

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The support arms are designed to be movable and adjustable, allowing them to be positioned according to the specific width and support needs of different workpieces. This dynamic adjustment capability enables the system to adapt to various cutting scenarios while maintaining optimal stability

Inventive Principle:
Principle #15Dynamics

2Reliability

If additional support structures are added to stabilize broader workpieces, then the stability and safety improve, but the device complexity increases

Engineering Contradiction:
Improvestability and safety of cutting operationVSAvoidstructural complexity of the miter saw
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The support arms serve multiple functions: they provide support for broader workpieces, can be adjusted for different workpiece widths, and can be positioned out of the way when not needed. This multi-functionality justifies the added structural elements by demonstrating their versatility across different operating conditions

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

Solution Approach 2:

The movable and adjustable nature of the support arms allows them to be deployed only when needed for broader workpieces, rather than being permanent fixed structures. This reduces the effective complexity for standard operations while providing enhanced capability when required

Inventive Principle:
Principle #15Dynamics

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 additional supporters enhance the stability of cutting broader workpieces, reducing the risk of injury and improving cutting performance while allowing safe operation on regular-sized workpieces by providing auxiliary support when needed and retracting to avoid hindering the cutting process.

Implementation Method 1

The two supporters are respectively pivotally mounted to the rotatable table for supporting the workpiece thereon while in a supporting position

Methodology Applied
Scientific EffectPivoting mechanism: Hinge

Data Source

PatentUS8025001B2Miter saw with support devices
Publication Date: 2011.09.27 REXON IND CORP LTD
  • US8025001B2 patent drawing
  • US8025001B2 patent drawing
  • US8025001B2 patent drawing

AI summary

A miter saw includes a base, a rotatable table, a saw arm, a driver, a saw blade, and two supporters. The rotatable table is pivotally mounted to the base and is rotatable relative to the base. The rotatable table includes a support surface configured to receive a workpiece thereon. The saw arm is coupled to the rotatable table and is pivotable downwards towards the support surface. The driver is mounted on the saw arm. The saw blade is mounted on the saw arm and is driven by the driver to cut the workpiece. The two supporters are respectively pivotally mounted to the rotatable table and are configured to support the workpiece thereon while in a supporting position, and to be pivoted to an unobtrusive stowed position when not in use.