Cut-Off Machine Guard Pivot Offset for Greater Cutting Depth
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Solution Overview
Problem
Existing portable, hand-held cut-off machines achieve cutting depths that are less than the maximum potential due to oversized flange diameters, which restrict the components' distribution and storage space, limiting the achievable cutting depth.
Innovation Solution
The pivot axis of the protective hood is offset from the output axis, allowing for a more efficient distribution of components and the use of a flange with the smallest possible diameter to increase cutting depth, with the protective hood's mounting flange adjustable to accommodate larger diameters, enabling greater cutting depths without additional component limitations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a larger flange diameter is used to ensure safety and component mounting, then component distribution and safety are improved, but the cutting depth is reduced
Solution Approach 1:
The pivot axis of the protective hood is offset from the output axis, creating a dimensional shift that allows the mounting flange to be positioned in a different spatial location. This offset arrangement enables the flange to accommodate larger diameters while maintaining adequate clearance for cutting operations, thus resolving the contradiction between safety (larger flange) and cutting depth (clearance requirement).
2Length of moving object
If a smaller flange diameter is used to increase cutting depth, then cutting depth is improved, but component distribution and safety are worsened
Solution Approach 1:
By offsetting the pivot axis from the output axis, the invention creates additional spatial dimension for flange placement. This allows the use of smaller flange diameters that provide sufficient cutting depth while the offset position ensures proper component distribution and maintains safety requirements through alternative spatial arrangement.
3Length of moving object
If the pivot axis is offset from the output axis, then component distribution and cutting depth are improved, but the mounting complexity increases
Solution Approach 1:
The offset pivot axis configuration utilizes spatial dimensionality to achieve better component distribution and increased cutting depth. While this introduces some mounting complexity, the patent resolves this by providing a mounting flange with adjustable positioning features that simplify the implementation of the offset arrangement, making the increased complexity manageable.
4Adaptability or versatility
If a mounting flange with adjustable diameter is used, then adaptability to different cutting depths is improved, but device complexity increases
Solution Approach 1:
The mounting flange is designed with adjustable positioning capabilities that allow it to adapt to different cutting depth requirements. This dynamic adjustment feature enables the flange diameter and position to be modified based on the specific cutting application, providing versatility while managing complexity through a standardized adjustment mechanism.
Solution Approach 2:
The mounting flange serves multiple functions: it provides structural support, enables adjustable positioning for different cutting depths, and ensures proper component distribution. This multi-functionality increases adaptability while the integrated design keeps the complexity increase manageable by combining multiple functions in a single component.
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3C
AI summary
A hand-held, hand-guided abrasive cutting machine comprising a rotating abrasive cutting disk, a supporting housing part (36), an output shaft (20) which is mounted such that it can rotate about an output axis (40), a drive motor, a transmission device (19) which connects the drive motor to the output shaft (20), a flange (41) and a protective cover (24) which covers the abrasive cutting disk over a covering region (25). The abrasive cutting machine is mounted, by means of the flange (41), on the output shaft (20) for conjoint rotation and is surrounded by the protective hood (24). The protective hood (24) can be rotated about a pivot axis, the pivot axis being offset from the output axis (40) of the output shaft (20) by a distance.