Linear Saw Space-Keeping Part Deformation Recovery
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Solution Overview
Problem
Traditional linear saw blades deform during machining, leading to accumulated errors and reduced precision due to uneven stress and lack of rigidity, resulting in deviations and potential breakage.
Innovation Solution
A linear saw design incorporating a space-keeping part that does not contact the machined slot, allowing the saw to recover from deformation and maintain precision by avoiding clamping forces, with a structure where the space-keeping part's length is greater than the workpiece thickness and its width is less than the machining part's maximum width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the saw blade is made thin to reduce size, then the saw blade can be more compact and easier to handle, but the rigidity is insufficient causing the saw blade to bend and deform during machining
Solution Approach 1:
The saw blade is divided into distinct functional segments: a machining part with saw teeth for cutting, and a space-keeping part without saw teeth that maintains structural integrity. This segmentation allows the thin machining part to perform cutting while the space-keeping part provides rigidity support, resolving the contradiction between thinness and rigidity.
Solution Approach 2:
The space-keeping part acts as an intermediary element between the thin machining part and the workpiece. It provides mechanical support and maintains the machining part's position without directly contacting the workpiece, thereby preventing deformation while preserving the thin profile of the active cutting section.
2Productivity
If the saw tooth continuously contacts the workpiece during machining, then cutting action is maintained, but deformation from previous machining accumulates and cannot be eliminated
Solution Approach 1:
The space-keeping part periodically enters and exits the machined slot during reciprocating motion. This periodic action creates intervals where the saw blade is not constrained by the workpiece, allowing deformation to reset and preventing accumulated machining errors, while still maintaining continuous cutting capability through the machining part.
Solution Approach 2:
The space-keeping part discards the deformed state by not contacting the workpiece during its passage through the machined slot, allowing the saw blade to recover its original position. This recovery process eliminates accumulated deformation errors while the machining part continues to perform cutting operations.
3Power
If the saw blade is subjected to unbalanced stress during machining, then cutting action occurs, but the saw blade bends and deviates from the machining position
Solution Approach 1:
The space-keeping part provides a counterbalancing structural support that offsets the unbalanced stress experienced by the machining part during cutting. This counter support prevents the saw blade from bending and deviating from the intended machining position, maintaining position accuracy while allowing cutting forces to be applied.
4Duration of action of moving object
If the saw blade deforms to the highest degree, then previous deformation accumulates, but machining precision deteriorates and service life shortens
Solution Approach 1:
The space-keeping part is designed to periodically reset the saw blade's deformation state before excessive deformation accumulates. This preliminary action prevents the saw blade from reaching critical deformation levels that would compromise machining precision and service life, extending the reliable operating duration of the tool.
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
This design effectively prevents accumulated errors and improves machining precision by allowing the saw to recover from deformation, reducing the likelihood of breakage and maintaining a straight machining path.
Implementation Method 1
the entire linear saw does not contact the machined slot or is not subjected to an acting force from the machined slot when the space-keeping part passes through the machined slot... allowing the saw to recover from deformation
Data Source
AI summary
A linear saw, machining method using the same and numerical controlled machining device. The linear saw has: a machining part (1), for cutting a machining object in a linearly extending direction of the linear saw, and generating a slot on the machining object; and the linear saw further includes a space-keeping part (2) arranged such that the whole linear saw does not contact the slot or is not subject to an acting force of the slot when the space-keeping part passes through the slot. As the linear saw is provided with a space-keeping structure, the linear saw has time and space to recover from a deformation generated by cutting the machining object, thus effectively preventing accumulated errors, and greatly improving the position precision of the machining seam.