Honing Tool with Radially Extendable Cutting Bar Groups
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Solution Overview
Problem
Existing honing tools are limited in their ability to accurately and efficiently work bearing seats with varying diameters, particularly struggling to achieve good accuracy and position coaxiality in stepped bores, as they are designed primarily for through bores and require tool changes for different bore types.
Innovation Solution
A honing tool with radially extendable cutting bar groups that can work through bores and stepped bores in a single step without tool changes, using a combination of friction and oscillating honing methods, and centering and guide bar groups to maintain coaxiality and stability, allowing for the use of standard honing machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a honing tool is designed for working through bores with unified diameter, then the tool structure is simple and easy to manufacture, but it cannot work stepped bores with different diameters without tool changes
Solution Approach 1:
The honing tool is divided into multiple cutting bar groups (first cutting bar group and second cutting bar group), each designed to work specific bore types. The cutting bars within each group can be independently adjusted radially, allowing the tool to adapt to different bore configurations without requiring complete tool changes.
Solution Approach 2:
The honing tool is designed with dual functionality to work both through bores and stepped bores using the same tool. The first cutting bar group works through bores while the second cutting bar group works stepped bores, eliminating the need for multiple specialized tools and reducing tool change requirements.
2Productivity
If multiple cutting bar groups with different diameters are arranged on the same tool, then different bore types can be worked without tool changes, but the coordination of cutting bar groups with bore positions becomes complex
Solution Approach 1:
The cutting bars in each cutting bar group are designed with radial adjustability, allowing dynamic positioning during operation. This dynamic adjustment capability enables the cutting bars to be coordinated with the positions of different bores (through bores and stepped bores) without requiring complex fixed positioning mechanisms.
Solution Approach 2:
Guide bars are introduced as intermediary elements to facilitate the coordination between cutting bar groups and bore positions. The guide bars provide reference surfaces that help position and align the cutting bars radially, simplifying the coordination process between multiple cutting bar groups and various bore configurations.
3Manufacturing precision
If bearing seats are worked by a thin and long tool, then the geometric border conditions are met, but the accuracy of measurement and position of bearing seats deteriorates
Solution Approach 1:
The tool structure is segmented into multiple cutting bar groups that can work different bearing seats simultaneously or sequentially. This segmentation allows the use of shorter tool sections for each specific bearing seat while maintaining overall tool functionality, improving measurement and positioning accuracy compared to a single long tool.
Solution Approach 2:
The patent replaces the traditional single long mechanical tool with a modular system of cutting bar groups that can be independently positioned and controlled. This substitution enables better control and measurement accuracy by reducing the effective tool length required for each specific working operation.
Data Source
AI summary
A honing tool for working several separate bores that are arranged coaxially in series and have different diameters. The honing tool includes several cutting bar groups arranged coaxially in series, wherein a diameter of a cutting bar group of the several cutting bar groups, which diameter is formed by radially extendable cutting bars, differs from a corresponding diameter of at least one other cutting bar group of the several cutting bar groups. A centering bar group is arranged in an axial direction to a free end of the honing tool adjacent at least one cutting bar group; or a guide bar group is arranged directly adjacent opposite the free end of the honing tool adjacent the at least one cutting bar group, or both the centering bar group and the guide bar group are arranged accordingly.