Circular Saw Laser Alignment Eccentric Adjustment
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Solution Overview
Problem
Existing circular saws with laser beam generators require slow and inaccurate adjustments due to the need for tools and elastic restoring forces from springs, affecting cutting precision.
Innovation Solution
A laser alignment device with a base, laser module, first adjustment unit, and second adjustment unit, featuring eccentric shafts and knobs for tool-free, quick adjustments of the laser beam generator's vertical and horizontal angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If adjustment screws with springs are used to position the laser beam generator, then the laser beam generator can be adjusted to desired position, but the elastic restoring force causes bias or deviation from adjustment position, lowering adjustment accuracy
Solution Approach 1:
The patent removes the spring-based elastic restoring force mechanism from the adjustment system. By eliminating the springs that caused bias and deviation, the laser beam generator can maintain its adjusted position without elastic interference, directly resolving the contradiction between adjustment accuracy and position stability
Solution Approach 2:
The patent applies preliminary anti-action by using gravity as a counterbalancing force against the elastic restoring force. The weight of the laser beam generator is positioned to offset the spring's elastic force, preventing bias and deviation before they can affect adjustment accuracy
2Measurement precision
If tool-based adjustment screws are used to rotate adjustment screws at different locations, then the laser beam generator can be positioned, but the adjustment procedure requires tool usage, resulting in slow adjustment speed
Solution Approach 1:
The patent implements self-service adjustment mechanisms where the laser beam generator automatically returns to its predetermined position when release buttons are pressed. This eliminates the need for operators to manually rotate adjustment screws with tools, dramatically increasing adjustment speed while maintaining positioning precision through the self-aligning gravity-spring mechanism
Solution Approach 2:
The patent transitions from static, tool-based screw adjustment to a dynamic system with release buttons that allow quick positional changes. The laser beam generator can be rapidly repositioned by pressing buttons and will automatically return to its set position, enabling fast adjustments without sacrificing precision
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 rapid and precise alignment of the laser beam generator without tools, enhancing cutting accuracy and simplifying the adjustment process.
Implementation Method 1
The first eccentric shaft has one end thereof eccentrically and fixedly connected to the first knob, and an opposite end thereof coupled to the first elongated slot of the retaining seat
Data Source
AI summary
A laser alignment device for a circular saw includes a base located on a blade guard of the circular saw, and a laser module mounted at the base. The laser module includes a retaining seat pivotally connected to the base, an auxiliary seat mounted at the retaining seat, and a laser beam generator installed in the auxiliary seat. A first adjusting unit includes a first knob and a first eccentric shaft connected to the first knob and coupled to a first elongated slot in the retaining seat for allowing adjustment of the angle of inclination of the laser beam generator by rotating the first knob. A second adjusting unit includes a second knob and a second eccentric shaft connected to the second knob and coupled to a second elongated slot in the auxiliary seat for allowing adjustment of the angular position of the laser beam generator by rotating the second knob.