Circular Saw Guide with Tape Measure for Floor Cutting Accuracy
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Solution Overview
Problem
Existing circular saw guide devices are ineffective for cutting workpieces to predetermined dimensions without a workbench, as they lack stability and accuracy when used on the floor, leading to potential misalignment and increased effort in holding the guide device.
Innovation Solution
A circular saw guide device with a base member and a freely movable tape measure scale, allowing for quick and accurate setting of cutting dimensions by abutting the guide end to the workpiece surface, and featuring a grip section, guide member, and support surface for stable operation, enabling cutting without a workbench.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a block-shaped saw guide is used on the floor surface, then the cutting operation can be performed without a workbench, but it becomes difficult to hold the saw guide at the predetermined position stably with one hand
Solution Approach 1:
The patent introduces a through section (handle opening) that allows the operator's hand to pass through, adding a new dimensional approach to gripping. Instead of holding the device from the sides, the hand passes through the handle opening from top to bottom, creating a more stable grip configuration that distributes force across the palm and fingers while maintaining the guide's position on the floor.
2Adaptability or versatility
If the saw guide is removed after making a notch to enable final-stage cutting while holding the rafter, then cutting can be performed without a workbench, but duplicate efforts are enforced and the guide function is lost
Solution Approach 1:
The patent makes the guide device dynamically adaptable by allowing the operator to transition between two modes: (1) using the guide device with the workpiece placed on the floor for initial cutting, and (2) removing the guide device to hold both the workpiece and saw for final-stage cutting. The through section facilitates this dynamic transition by enabling easy hand passage during guide removal, allowing the operator to adapt the workflow to the specific cutting stage without permanent constraints.
3Ease of operation
If cutting is performed without the guide plate during final-stage cutting, then the workpiece can be held in hand, but the cutting position may be out of position
Solution Approach 1:
The patent applies preliminary action by using the guide device to establish accurate reference marks and initial cuts on the workpiece before removing the guide. The guide plate and scale are used in advance to mark precise cutting positions and create notches that serve as references for subsequent freehand cutting, ensuring that even without the guide during final-stage cutting, the cut remains accurate to the predetermined dimensions.
Data Source
AI summary
An object of the present disclosure is to provide a circular saw guide device enabling reliable cutting in the presence of a guide function even when having no workbench for placing a workpiece thereon. The circular saw guide device 2A includes a base member 6 having a guide end 4 on one end side in the longitudinal direction for guiding a saw blade 34 there along, a tape measure 10 provided with a scale 8 freely movable back and forth having a locking claw 8a to be hooked to an end face 30c of a square timber 30, and a handle 20. A central portion of the base member 6 in the longitudinal direction is a narrow grip section 16, and the tape measure 10 is stored in an end portion in the X2 direction of the handle 20.