Tapered Slotted Tool Retainer for Stronger Road Planer Holding
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Solution Overview
Problem
Existing tool retainers for road planing machines suffer from insufficient holding force, non-optimal retention characteristics, and difficult installation and removal processes.
Innovation Solution
A retainer with an annular body and protruding bosses that can be elastically deformed to fit into a tool holder, allowing for secure axial fixation and radial rotation of tools, featuring a slotted opening that tapers in the circumferential direction and engages with a tool's annular groove for enhanced retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a press fit between the retainer and the bore is used to secure the tool, then the tool is fixed in the axial direction, but the holding or retention force is insufficient
Solution Approach 1:
The retainer utilizes elastic deformation to change its dimensional parameters. The body is elastically deformable into a compressed state wherein the first external diameter and the second external diameter are equal, enabling the retainer to expand and contract for secure engagement while providing improved retention force through elastic recovery.
Solution Approach 2:
The retainer transitions from a static press fit design to a dynamic elastic deformation design. The body can be elastically deformed into a compressed state and then returns to its original shape, providing continuous retention force and improved reliability through the elastic recovery mechanism.
2Ease of operation
If a traditional retainer design is used, then the tool can be secured axially, but the installation and removal processes are unnecessarily difficult
Solution Approach 1:
The retainer's elastic deformability allows it to be compressed into a smaller state for easy insertion into the bore, then expand to provide secure retention. This parameter change enables simple installation and removal processes while maintaining strong holding force.
Solution Approach 2:
The retainer design separates the installation phase (compressed state) from the operational phase (expanded state), allowing easy insertion followed by secure retention. The elastic deformation capability enables the retainer to transition between these states efficiently.
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
The retainer provides improved retention force and ease of installation and removal of cutting tools, ensuring secure attachment while allowing for radial movement, thereby enhancing the operational efficiency of road planing operations.
Implementation Method 1
The body is elastically deformable into a compressed state wherein the first external diameter and the second external diameter are equal
Data Source
AI summary
A retainer for a tool comprises an annular body, a plurality of protruding bosses, and a slot formed through the body in an axial direction. The annular body defines a central opening adapted to receive a tool therein in the axial direction and includes a first end having a first external diameter, and a second end having a second external diameter. The plurality of protruding bosses extend into the opening from an internal side of the body defining the central opening. In a resting state of the body, the first external diameter and the second external diameter are distinct from one another. The body is elastically deformable into a compressed state wherein the first external diameter and the second external diameter are equal.