Circular Saw Blade Mount With Radial-Access Flange Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Circular saws often face challenges in attaching and removing blades due to tight clearances, requiring improved blade mounts and attachment methods to facilitate easier blade exchange and operation.
Innovation Solution
The design includes a blade mount with an inner flange that contacts the circular saw blade and an outer flange that extends through the blade's central opening, allowing for face-to-face contact and secure attachment using a fastener, enabling radial movement for blade installation and removal without translational motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional attachment mechanisms are used, then the blade can be securely attached to the saw, but the tight clearances make it challenging to attach and remove blades
Solution Approach 1:
The blade mount is divided into two separate flanges (inner flange and outer flange) that can be positioned independently. The inner flange contacts the inner planar blade surface while the outer flange contacts the outer planar blade surface, allowing each flange to be optimally positioned within the tight clearances without interfering with blade removal operations
Solution Approach 2:
The attachment mechanism transitions from requiring translational motion to requiring only radial movement. The inner flange and outer flange are positioned at different radial distances from the arbor, enabling blade attachment and removal through radial movement alone, which is feasible within the tight clearance constraints
2Reliability
If the inner flange includes structures that project into the central opening, then additional blade control is achieved, but blade removal becomes more difficult due to tight clearances
Solution Approach 1:
All structures that would project into the blade's central opening are extracted from the inner flange design. The inner flange is deliberately kept free of any protruding elements, eliminating the interference that would otherwise prevent easy blade removal while maintaining adequate blade control through the outer flange and fastener
Solution Approach 2:
Instead of using the inner flange to control the blade through projecting structures, the design inverts the approach by using the outer flange and fastener system for primary blade retention. The inner flange's sole function becomes providing a clean contact surface and structural support without interference
Data Source
AI summary
Circular saws that include blade mounts for circular saw blades and methods of attaching circular saw blades to circular saws are disclosed herein. The circular saws include a motor, an arbor, and a blade mount. The motor includes a motor shaft configured to rotate about a shaft rotational axis. The arbor is configured to receive a torque from the motor when the motor shaft rotates about the shaft rotational axis. The blade mount is operatively attached to the arbor and is configured to selectively and operatively attach a circular saw blade to the arbor. The blade mount includes an inner flange that includes an inner flange blade-contacting surface that faces away from the motor. The inner flange is free from any structure that projects away from the motor and also away from the inner flange blade-contacting surface.