Sawing Unit Oscillating Blade Height Adjustment
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Solution Overview
Problem
Existing circular saws for wood lack a mechanism to vary the blade height efficiently, leading to limitations in mass movement and precision during machining, particularly in adjusting the blade's position relative to the workpiece processing plane.
Innovation Solution
A sawing unit with a movable support and an oscillating body carrying a rotating blade and motor, utilizing a dual flexible-member transmission system to vary the blade's height, allowing the blade to move below or above the workpiece processing plane, while minimizing the motor's vertical movement and ensuring balanced anti-imbalance structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the blade height is varied by moving the drive motor vertically, then the blade height can be adjusted, but the movement of great masses (drive motor) is required which complicates the system
Solution Approach 1:
An oscillating body is introduced as an intermediary component between the drive motor and the blade. The oscillating body converts the motor's rotation into oscillating motion that varies the blade height relative to the workpiece plane, while the motor itself remains substantially stationary, thus avoiding the complexity of moving great masses vertically
Solution Approach 2:
The system employs dynamic motion conversion where the drive motor's continuous rotation is transformed into oscillating motion of the blade assembly. This dynamic transformation allows precise blade height adjustment during the oscillation cycle without requiring the motor to move vertically, simplifying the overall system structure
2Manufacturing precision
If the blade height is varied by complex mechanisms, then precise height adjustment is possible, but the control becomes more difficult and machining quality may deteriorate
Solution Approach 1:
The oscillating body acts as a mediator that simplifies control by converting motor rotation into automatic oscillating motion. The blade height is varied naturally during the oscillation cycle, eliminating the need for complex control mechanisms while maintaining precise height adjustment capability
Solution Approach 2:
The oscillating body performs the height adjustment function automatically through its inherent oscillating motion. The system self-regulates the blade height variation during operation without requiring additional control mechanisms, improving ease of operation while maintaining precision
3Power
If the motor is positioned to rotate the blade, then the blade can be driven, but interference with other elements occurs during height variation
Solution Approach 1:
The system uses dynamic motion conversion where the motor rotates in a fixed position while the oscillating body translates this rotation into blade height variation. This dynamic approach allows the motor to maintain optimal positioning for power transmission without interfering with other elements during blade height adjustment
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
This solution enables precise and efficient height adjustment of the blade, improving machining quality and simplifying control, while maintaining a constructionally simple and cost-effective design that allows for balanced movement of the sawing unit.
Implementation Method 1
a first endless flexible member 17 wound around the drive shaft 11 and around a first end of the transmission shaft 16, and a second endless flexible member 18 is wound around a second end (opposite the first) of the transmission shaft 16 and around the blade shaft 12
Data Source
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AI summary
A sawing unit (5) for machining wooden workpieces or workpieces made of a material equivalent to wood is disclosed, on a horizontal machining plane, comprising an oscillating body (9) that bears a rotating blade (4), a blade-driving motor (8) and a system (16, 1, 18) for transmitting motion from the motor (8) to the blade (4); the oscillating body (9), that is fitted to a movable support (6) below the machining plane, can oscillate in such a manner as to vary the height of the blade (4) in relation to the machining plane.