Nested Hole Saw Arbor for Quick Mounting and Removal
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Solution Overview
Problem
Existing cup-shaped hole saws mounted on arbors for cutting circular holes are inefficient in terms of ease and speed of removal and installation, limiting their usability and versatility.
Innovation Solution
A hole saw system comprising a first and second hole saw, each with a cylindrical cutting wall and mount wall featuring engagement and drive features, allowing for single or nested arrangements on an arbor with locking members for secure mounting, and a storage case for convenient use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional hole saws are mounted on arbors using conventional methods, then the hole saws can be securely held during cutting, but the installation and removal processes are time-consuming and cumbersome
Solution Approach 1:
The arbor is divided into multiple independently operable locking members that can engage with corresponding features on the hole saw. This segmentation allows for quick, tool-free attachment and detachment by simply pushing the hole saw onto the arbor and having the locking members automatically engage, eliminating time-consuming manual fastening operations.
Solution Approach 2:
The locking members are pre-positioned on the arbor in a ready-to-engage state. When a hole saw is pushed onto the arbor, the locking members automatically align and engage with the drive features on the hole saw's mount wall, performing the securing action in advance before the user needs to make any additional movements. This preliminary positioning of locking mechanisms eliminates the need for manual fastening during installation.
2Productivity
If multiple hole saws are stored separately, then each hole saw is easily accessible, but the storage space required and the time to locate specific sizes increase
Solution Approach 1:
The hole saws are designed with nested storage capability where smaller hole saws can be placed inside larger ones when not in use. The arbors also feature nested storage where multiple arbors with mounted hole saws can be stored within each other. This nesting approach consolidates multiple separate storage locations into a single compact unit, allowing users to quickly access any hole saw by simply removing the outer layers of the nested structure.
3Adaptability or versatility
If hole saws are designed with multiple engagement features for versatile mounting configurations, then single and nested saw arrangements are enabled, but the manufacturing complexity of the hole saws increases
Solution Approach 1:
The hole saws are equipped with multiple types of engagement features (first and second engagement features with corresponding drive features) that can interface with different locking member configurations on the arbor. These universal engagement features allow the same hole saw to be used in various mounting arrangements including single saw mounting and nested saw arrangements. The engagement features are designed with standard geometries that can be manufactured using conventional processes, balancing versatility with manufacturing simplicity.
Data Source
AI summary
A hole saw system includes a first hole saw, a second hole saw, and an arbor. The first hole saw is capable of being nested within the second hole saw. Each of the hole saws includes a mount wall having a first engagement feature configured to receive a first drive feature and a second engagement feature configured to receive a second drive feature that is different from the first drive feature. The arbor includes the first drive feature and the second drive feature and is configured to selectively mount each of the hole saws in a single saw arrangement and to selectively mount both of the hole saws in a nested saw arrangement. In the single saw arrangement, the arbor mounts a single one of the hole saws with the first drive feature engaged in the first engagement feature and the second drive feature not engaged with the second engagement feature. In the nested saw arrangement, the arbor mounts both of the hole saws with the first hole saw nested within the second hole saw and the first drive feature engaged in the first engagement feature of the first hole saw and the second drive feature engaged in the second engagement feature of the second hole saw.