Controllable Support Wheels for Offset Floor Saw Drift Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Floor saws with offset cutting blades experience drifting issues due to imbalance, which current compensation methods, such as gear ratios and manual operator adjustments, are not always effective, making the operation inefficient and straining for the operator.
Innovation Solution
A floor saw with a sensor arrangement and control unit that dynamically adjusts wheel forces to compensate for yaw motion, using driven wheels, wheel brakes, and a movable weight to maintain desired yaw motion, allowing for automatic drift correction and optimized cutting speed based on concrete hardness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the cutting blade is mounted offset to one side of the floor saw, then cuts can be made close to walls or obstacles, but the saw drifts towards the side where the blade is mounted
Solution Approach 1:
The system applies a counteracting wheel force to the supporting wheel on the opposite side of the offset blade. The control unit calculates the required counter force based on the offset distance and blade position, then applies this force through the driven supporting wheel to balance the imbalance caused by the offset blade mounting
Solution Approach 2:
The system dynamically adjusts the wheel force based on real-time detection of yaw motion and calculated imbalance. The control unit continuously monitors the situation and adjusts the counteracting force on the supporting wheel to maintain equilibrium, allowing the floor saw to adapt to varying offset conditions
2Ease of operation
If fixed gear ratios are used to compensate for drift, then some drift correction is achieved, but the compensation is seldom perfect and requires manual operator adjustment
Solution Approach 1:
The system uses sensor arrangements to detect the actual yaw motion of the floor saw and feeds this information back to the control unit. The control unit compares the detected yaw motion with the desired yaw motion and automatically adjusts the wheel force on the supporting wheel to eliminate the difference, achieving perfect drift compensation without manual intervention
Solution Approach 2:
The floor saw automatically compensates for its own drift by using its driven supporting wheel to apply the necessary counteracting force. The system monitors its own yaw motion and self-adjusts the wheel forces to maintain the desired cutting path, eliminating the need for manual operator correction
3Ease of operation
If manual body weight compensation is used by the operator, then drift can be corrected, but the operation becomes more difficult and places additional strain on the operator
Solution Approach 1:
The floor saw performs its own drift compensation automatically using the driven supporting wheel to apply the necessary counteracting force. The system detects its own yaw motion through sensors and self-corrects without requiring the operator to manually adjust body weight or position, thereby maintaining operational efficiency and reducing operator strain
Data Source
AI summary
A floor saw (100) for sawing in a concrete surface segment (160), the floor saw comprising a circular cutting blade (110), at least two drive wheels (120) arranged to support the floor saw on the concrete surface segment (160), a sensor arrangement (140) configured to determine a current yaw motion of the floor saw, and a control unit (130) configured to receive a desired yaw motion setting, wherein the at least two drive wheels (120) are arranged to be driven at respective first and second wheel speeds, and wherein the control unit (130) is arranged to control a difference between the first and second wheel speeds to reduce a difference between the current yaw motion of the floor saw and the desired yaw motion setting.