Mitre Angle Stop With Preselection Mechanism
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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, leading to difficulties in precise angle adjustments.
Innovation Solution
An angle adjustment device with a pivoting element and an angle preselection mechanism, including a stop plate with stop elements, a securing device, a display device, and an anti-twist mechanism, to facilitate precise and secure adjustment of the pivoting range between a minimum and maximum angular position.
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 increased, but the device complexity increases and manufacturing precision deteriorates
Solution Approach 1:
The angle adjustment device is divided into functionally independent modules: a pivoting element for angle adjustment, a clamping block element for securing, and an angle preselection mechanism with stop plate and stop elements. Each module performs a specific function, allowing the system to achieve complex adjustment capabilities through simple, well-defined components rather than a monolithic complex structure.
Solution Approach 2:
The angle preselection mechanism allows the maximum angular position to be preselected before actual use. The stop plate with prepositioned stop elements enables the operator to set the desired angle range in advance, simplifying the operation during actual cutting tasks while maintaining versatility through multiple preselected angle options.
2Adaptability or versatility
If a complex angle adjustment device is used, then the adjustment range can be increased, but the manufacturing precision deteriorates
Solution Approach 1:
By segmenting the device into modular components with simple geometries (pivoting element, clamping block, stop plate), each part can be manufactured with high precision using standard machining processes. The segmentation avoids the need for complex integrated components that would be difficult to manufacture precisely.
Solution Approach 2:
The stop elements on the stop plate are designed with specific local geometric features (spacing, positioning) that enable precise angle determination. Each stop element corresponds to a specific angular position, and the local quality of these elements ensures accurate angle settings without requiring the entire device to be complex.
3Adaptability or versatility
If the maximum swivel range is made adjustable, then the adaptability improves, but the ease of operation deteriorates due to difficult preselection
Solution Approach 1:
The stop plate is pre-equipped with multiple stop elements positioned at predetermined angular intervals. This preliminary arrangement of stopping positions allows the operator to quickly select the desired maximum angle by simply rotating the stop plate to align the appropriate stop element, eliminating complex adjustment procedures and making preselection intuitive and fast.
4Reliability
If the angle preselection mechanism is made secure with locking devices, then the reliability improves, but the ease of operation deteriorates
Solution Approach 1:
The locking function is extracted as a separate, simple mechanism (locking device with retaining element and annular groove) distinct from the angle selection mechanism. This separation allows the angle to be selected and adjusted easily through the stop plate rotation, while the locking device independently secures the position only when needed, maintaining both ease of operation and reliability without mutual interference.
Data Source
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AI summary
An angle-setting device (1) for use in a machine tool (2), especially a saw, said device having a pivot element (20, 120) which can be steplessly pivoted about a pivot point on a clamping block element (10) reversibly between at least a minimum angular position and a maximum angular position; and an angle preselection mechanism (4). The angle preselection mechanism (4) contains a stop plate (50, 150, 350) which can pivot relative to the clamping block element (10) and has at least one stop element (56, 57, 60, 156) for preselecting the maximum angular position of the pivot element relative to the clamping block element, at least one of the stop elements (56, 57, 69, 156) being in the form of an operating lever element (58) for preselecting the maximum angular position of the pivot element (20, 120) relative to the clamping block element (10).