Miter Angle Stop Mechanism for Precise Saw Pivot Limiting
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Solution Overview
Problem
Existing angle adjustment devices for machine tools, particularly circular saws, have complex designs and imprecise adjustment of the maximum pivoting range (miter angle), making them inefficient for precise angle changes.
Innovation Solution
A device with a clamping block and pivoting lever that includes stop elements and an adjustment mechanism with a lever element and counter-stop element, allowing for easy selection and limitation of the maximum miter angle, along with a display and limiting element to prevent accidental over-rotation, simplifying the adjustment process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex angle adjustment device with multiple components is used, then the adjustment range can be achieved, but the device complexity increases and manufacturing precision becomes difficult to maintain
Solution Approach 1:
The adjustment mechanism is segmented into distinct functional elements: stop elements fixed in the clamping block, a lever element with counter-stop, and a display/limiting element. Each component has a specific function, allowing the system to achieve complex adjustment capabilities through simple, well-defined parts rather than a monolithic complex mechanism.
Solution Approach 2:
The invention extracts the essential function of angle limitation from a complex mechanism and implements it through simple geometric features (stop elements and counter-stop) combined with a visual display system. This separates the limiting function from the adjustment mechanism itself, reducing overall device complexity.
2Device complexity
If a simple adjustment mechanism is used, then device complexity is reduced, but manufacturing precision and accurate angle limitation become difficult to achieve
Solution Approach 1:
The invention replaces complex mechanical angle-limiting mechanisms with a visual display and limiting element system. The scale with angular markings and the elongated recess that guides rotational movement substitute for precision mechanical stops, achieving accurate angle control through geometric constraints and visual feedback rather than complex mechanical interlocking.
Solution Approach 2:
The display and limiting element acts as an intermediary between the simple lever element and the clamping block. It provides both visual indication of the angle (scale) and physical limitation of rotation (elongated recess), mediating between the simple adjustment mechanism and the precision angle requirement.
3Manufacturing precision
If multiple adjustment components are included, then adjustment precision can be improved, but the ease of operation decreases due to more parts to manipulate
Solution Approach 1:
The invention merges multiple functions into a single integrated lever element: angle selection, limitation setting, and visual display are all accomplished through one component. The lever element simultaneously engages with stop elements for limitation, provides visual indication through the display element, and controls the adjustment range, eliminating the need for separate controls for each function.
Solution Approach 2:
The lever element serves multiple purposes: it acts as the adjustment tool, the limiting mechanism (via counter-stop), and the display indicator (through alignment with scale markings). This multi-functional design reduces the number of separate components the operator must manipulate while maintaining precision adjustment capabilities.
Data Source
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AI summary
The invention relates to a device for setting the miter angle of a machine tool, in particular a circular saw, comprising a clamping block having at least one slot, and to a pivot lever, on which the machine tool can be mounted and which is supported such that the pivot lever can be pivoted about a pivot point relative to the clamping block between a minimum miter angle and a maximum miter angle. The slot comprises at least two stop elements positioned so as to be offset relative to one another. A setting mechanism having a lever element for the selection of a maximum miter angle is provided, wherein the lever element comprises a mating stop element which can be aligned in such a way corresponding to the rotational alignment of the lever element that the mating stop element is able to strike the respective stop element in accordance with the selected maximum miter angle, by which means the pivoting movement of the pivot lever relative to the clamping block for setting the maximum miter angle can be limited.