Bar Support with Inward Dowels for Sheet Material Sawing
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Solution Overview
Problem
Existing saw horse and work support assemblies fail to securely hold plywood or sheet board materials during incising, leading to potential bending, buckling, and saw binding, which can cause damage to the material, operator, or equipment.
Innovation Solution
An elongated bar support device with a multi-angled recess and inwardly extending support dowels that allows the material to be securely positioned on a horizontal surface, preventing bending or buckling and eliminating the need for manual holding during sectioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional saw horse assemblies are used to support sheet board material during incising, then the material can be supported on a horizontal surface, but the material cannot be securely held in position, leading to bending, buckling, and saw binding
Solution Approach 1:
The support device is divided into multiple functional segments: a horizontal support surface for positioning the material, vertical support surfaces for securing the incised portion, and a base for stability. This segmentation allows each part to perform its specific function effectively, preventing bending and buckling during incising operations
Solution Approach 2:
The support device is positioned and adjusted before the incising operation begins. The horizontal support surface is set to support the material at the desired location, and the vertical support surfaces are positioned to secure the incised portion. This preliminary positioning ensures the material remains stable throughout the cutting process without requiring manual holding
2Ease of operation
If the material is supported on a horizontal surface during incising, then the operator can access the cutting zone, but the incised portion cannot be retained in position, causing saw binding
Solution Approach 1:
The support device provides different types of support at different locations: the horizontal support surface provides positioning support at the cutting zone for operator access, while the vertical support surfaces provide retention support at the incised portion to prevent saw binding. Each location has the specific quality needed for its function
3Reliability
If manual holding is used to secure the sectioned area during cutting, then the material can be kept in position, but the operator and equipment are exposed to damage risk
Solution Approach 1:
The support device secures the material itself through its horizontal and vertical support surfaces, eliminating the need for manual holding. The device performs the securing function autonomously, protecting the operator from exposure to moving blades and preventing equipment damage from unstable material
Solution Approach 2:
The vertical support surfaces act as an intermediary between the material and the cutting operation. Instead of the operator directly holding the material (creating hazard), the vertical supports mediate by securing the incised portion, maintaining stability while eliminating direct human contact with the dangerous cutting zone
Data Source
AI summary
An elongated bar support device, such as which can be used in singular fashion with an elongated beam or in paired fashion with a flattened sheet board material. An elongated body has a main extending section for supporting an underside of the board or beam. An intermediate section includes a multi-angled recess which extends below the support surface. A forward most portion of each bar support extends in angled or sloping fashion relative to a horizontal extending axis associated with the main extending section. A pair of support dowels extend in linearly spaced apart and inward (cross directed) fashion from the forward extending portion of each bar, to contact opposite surfaces of the plywood or sheet board at support locations forward of the intermediate crosswise recess and opposite a rearward extending direction of the main support section. Upon widthwise sectioning, the opposite surface supporting dowels retain the incised portion in position, without bending or buckling.