Honing Tool Retaining System for Stick Extraction
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Solution Overview
Problem
Honing sticks in honing tools tend to fall out or get forced out during withdrawal from machined bores, especially due to centrifugal forces, leading to a need for reliable and straightforward retaining systems that prevent this issue.
Innovation Solution
A honing tool with a tubular tool body and a honing stick retaining system featuring elastically compressible retaining elements, such as balls or helical compression springs, that engage with the honing stick receiving opening to provide a secure frictional and form-fitting connection, preventing the honing stick from falling out.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If honing sticks are received radially movably in the honing stick receiving opening with exact machining of boundary surfaces to achieve sliding fit, then the honing stick can be manually inserted and held by frictional forces, but the honing stick may fall out or be forced out by centrifugal forces during withdrawal
Solution Approach 1:
The patent introduces a retaining element as an intermediary component between the honing stick and the tool body. This retaining element engages with both the honing stick and the tool body to provide positive retention, preventing the honing stick from falling out during withdrawal while maintaining ease of manual insertion.
2Reliability
If stick catch bushings are used that slide over the cutting region with honing sticks, then retention is provided by inherent weight, but the solution is complex and may not prevent forced out by centrifugal forces
Solution Approach 1:
The patent extracts the retention function from complex mechanical systems like stick catch bushings and implements it through a simpler retaining element that can be integrated into the existing honing stick receiving opening structure. This reduces device complexity while maintaining reliability.
3Reliability
If elastically compressible retaining elements are used to engage with boundary surfaces of honing stick receiving opening, then secure retention is achieved through pressing force, but the design and assembly becomes more complex
Solution Approach 1:
The elastically compressible retaining element is designed to be self-retaining through its elastic properties. When compressed, it generates pressing force against the boundary surfaces of the honing stick receiving opening, automatically securing the honing stick without requiring additional fastening mechanisms or complex assembly procedures.
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 solution ensures the honing stick is securely held in place by generating a pressing force through the compressible retaining elements, providing reliable retention without the need for complex design or assembly, and is resistant to coolants and lubricants used in honing machining.
Implementation Method 1
at least one elastically compressible retaining element... that engages, with a pressing force generated by compressing the retaining element, on a boundary surface of the honing stick receiving opening
Implementation Method 2
The honing stick may possibly also be forced out of the honing stick receiving opening by centrifugal forces if the working spindle still rotates relatively quickly after the withdrawal operation
Implementation Method 3
the honing stick is held in the honing stick receiving opening by frictional engagement
Data Source
AI summary
A honing tool includes a tool body which is tubular at least in certain portions and includes a cutting region with at least one honing stick receiving opening which is continuous from the interior of the tool body to the outside and is intended for receiving a honing stick, wherein dimensions of the honing stick receiving opening and of the honing stick are matched to one another such that the honing stick is received radially movably, and substantially without play in the circumferential direction of the tool body, between boundary surfaces of the honing stick receiving opening. The honing tool comprises a honing stick retaining system designed such that the honing stick is held in the honing stick receiving opening by the honing stick retaining system.