Universal Depth Adjustment for Hand-Held Cutting Machines
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Solution Overview
Problem
Existing hand-held cutting machines have limited universal depth adjustment capabilities, restricting their functionality to specific types of cutting operations.
Innovation Solution
A universal depth adjustment device that can be fixedly arranged on both the guide device and the drive assembly, incorporating a setting body that provides stop, display, and fixing functionalities, along with a spring-loaded restoring mechanism for automatic adjustment to the upper cutting depth position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a depth adjustment device is constructed for a specific type of manual cutting machine, then it achieves reliable depth control for that specific type, but it lacks universality and cannot be applied to other cutting machine types
Solution Approach 1:
The depth adjustment device is designed with a setting body that can be related to either the guide device or the drive assembly, enabling it to function across different cutting machine types (pendulum hood saws, plunge saws, etc.). The setting body serves multiple functions including stop function, display function, and fixing function, making the device universally applicable while maintaining simplicity.
Solution Approach 2:
The setting body is designed to be movable relative to at least one of the guide device or drive assembly, allowing it to adapt to different machine configurations. This dynamic relationship enables the same setting body to serve different functions depending on which component it is related to, thereby achieving universality without increasing overall device complexity.
2Adaptability or versatility
If the setting body is made movable relative to the guide device and drive assembly, then it provides versatile adjustment functionalities, but it increases the complexity of the depth adjustment device
Solution Approach 1:
The setting body is designed as a multi-functional component that can relate to either the guide device or drive assembly, providing stop function, display function, and fixing function. This universal design allows one component to perform multiple roles, reducing the need for separate dedicated components and thereby limiting the increase in overall device complexity.
Solution Approach 2:
Multiple functions (stop function, display function, fixing function) are merged into a single setting body component. By combining these functions into one movable element, the patent avoids the complexity that would arise from having separate components for each function, thus achieving versatility with minimal complexity increase.
3Measurement precision
If the setting body serves as a stop element for the drive assembly, then it provides precise depth positioning, but it requires additional fixing mechanisms to maintain the position
Solution Approach 1:
The stop function and fixing function are merged into the setting body and its interaction with the drive assembly. The setting body itself serves as the stop element, and its movable nature allows it to be positioned precisely while the same component provides the fixing function when related to the drive assembly, eliminating the need for separate fixing mechanisms.
Solution Approach 2:
The setting body universally provides both positioning (stop) function and fixing function across different machine types. By making the setting body itself multi-functional, the patent avoids adding complex separate mechanisms for each function, thereby maintaining precision while limiting complexity increase.
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
Enables versatile cutting depth adjustments, allowing the hand-held cutting machine to function as both a pendulum hood saw and a plunge saw, with convenient operation and easy handling, while maintaining precise control over cutting depths.
Implementation Method 1
spring-loaded restoring mechanism for automatic adjustment to the upper cutting depth position
Data Source
Figure 1~2A
Figure 3~4
Figure 5~7
AI summary
The invention relates to a manually operated cutting machine (10), more particularly a power saw, comprising a drive unit (11) which has a tool mount (13) for a disc-type cutting tool (14), more particularly a saw blade, and a drive motor (12) for rotationally driving the tool mount (13), and comprising a guide arrangement (20) which can be guided along a base by way of a guide surface (27) and via which the drive unit (11) is pivotally mounted by means of a depth adjustment bearing (36) to pivot about a depth adjustment axis (TA) between an upper cutting depth position and a lower cutting depth position (SU), wherein in the lower cutting depth position (SU) the tool mount (13) is closer to the guide surface (27) than when in the upper cutting depth position (SO), so that the cutting tool (14) projects further beyond the guide surface (27) than when in the upper cutting depth position (SO), wherein for adjustment of the cutting depth positions (SU, SO) the manually operated cutting machine has a depth adjustment arrangement (50) comprising a guide depth adjustment element (70), which is connected to the guide arrangement (20), and a drive depth adjustment element (60), which is connected to the drive unit (11) and is shifted relative to the guide depth adjustment element (70) when the cutting depth position (SU, SO) is shifted, and also comprising an adjustment member (51) which provides at least one adjustment function. The adjustment member (51) is movably mounted for movement relative to the guide depth adjustment element (70) and the drive depth adjustment element (60), and can be releasably secured to the drive depth adjustment element (60) by means of a drive securing arrangement (80) and to the guide depth adjustment element (70) by means of a guide securing arrangement (100).