Elastic Jaw Retaining Element for Machining Tool Tip
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Solution Overview
Problem
Current tool-holding devices for machining tools require complex and costly processes for replacing worn-out tips, involving braze-welding and high material costs, with insertion challenges due to excessive or insufficient elastic restoring forces in existing retaining elements.
Innovation Solution
A retaining element with mutually cooperating jaws that snap-lock the tip in a pincer-like manner, allowing parallel insertion and re-use, utilizing elastic force and specialized shapes to securely hold the tip, reducing material consumption and manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a retaining element with elastic portion is used to hold the tip, then the tip can be retained securely, but the insertion becomes impossible unless an instrument for spreading apart the jaws is used
Solution Approach 1:
The retaining element utilizes elastic deformation dynamically. The jaws are designed to be flexible and can be temporarily deformed during insertion, then automatically return to their original position to secure the tip. This dynamic behavior allows both easy insertion and secure retention without requiring separate instruments.
Solution Approach 2:
The elastic portion of the retaining element provides self-service functionality. The elastic force automatically spreads the jaws apart during insertion and then closes them to secure the tip, eliminating the need for external instruments to assist the insertion process.
2Ease of operation
If the elastic restoring force is too weak, then the insertion becomes easier, but the tip can slip out of the seat
Solution Approach 1:
The design optimizes the elastic force parameter to achieve the right balance. The elastic portion is designed with specific material properties and geometric dimensions that provide sufficient restoring force to secure the tip while allowing easy insertion. This parameter optimization resolves the contradiction between insertion ease and retention security.
3Strength
If braze-welding is used to connect the tip to the base, then sufficient strength is achieved, but the manufacturing process becomes complex and costly
Solution Approach 1:
The invention extracts the complex braze-welding process and replaces it with a simpler mechanical retention system. The tip is held by the elastic retaining element through friction and geometric interference rather than thermal bonding, eliminating the need for brazing operations while maintaining connection strength.
Solution Approach 2:
The design treats the tip as a replaceable component that can be easily inserted and removed without permanent attachment. This disposable approach eliminates complex joining processes and allows for quick replacement, reducing manufacturing complexity and costs.
4Reliability
If the tip is inserted perpendicular to the bases of the retaining element, then the tip can be secured, but the operation becomes uncomfortable and may require additional instruments
Solution Approach 1:
Instead of inserting the tip perpendicular to the bases as in conventional designs, the invention inverts the insertion direction to be parallel to the bases. This inverted approach allows the tip to be inserted along with the retaining element as a unit, making the operation more comfortable and eliminating the need for additional spreading instruments.
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
Facilitates easy and secure replacement of machining tips, reduces material and energy costs, and simplifies manufacturing, while maintaining industrial standards and tool-holder compatibility.
Implementation Method 1
The snap insertion is brought about by the elastic force exerted onto the jaws by an elastic portion of the retaining element
Data Source
AI summary
Tool-holding device (11) for a machining tool, comprising: a tool-holder body (13); a receiving part (15) defined in the tool-holder body (13); a retaining element (17) provided with a pair of mutually cooperating jaws (17a,17b); a female seat (19) between the jaws for an engaging male portion (21) of a machining tip (23), the jaws (17a,17b) being capable of taking a locking configuration, in which the engaging portion (21) of the tool (23) is firmly locked within the seat (19) of the retaining element (17), and a disengaged configuration in which the engaging portion (21) of the tip (23) can be detached from the retaining element (17); a moveable component (25) which bear the main load of holding the retaining element (17) in the receiving part (15) when the retaining element (17) is in the configuration in which it engages the tool (23).