Rotatable Milling Tool Holder for Extended Thread Cutting Life
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Solution Overview
Problem
Existing milling bells with interchangeable plate tools require frequent replacement or regrinding when the working area wears out, complicating handling and operation.
Innovation Solution
A milling bell design that allows tools to be rotated into a second operating position, with a holder capable of holding multiple tools and featuring radially arranged working areas, enabling extended use and improved stability, and a clamping screw system for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a milling tool with a single working area is used, then the tool structure is simple, but the tool must be frequently replaced or reground when worn, complicating handling
Solution Approach 1:
The milling tool is divided into multiple working areas (first working area and second working area) that can be used sequentially. When one working area is worn, the tool can be rotated to use another working area, eliminating the need for frequent replacement or regrinding and simplifying handling operations.
Solution Approach 2:
The milling tool is designed with rotational capability around an axis parallel to the device rotation axis, allowing dynamic repositioning between multiple working areas. This dynamic feature enables the tool to adapt to wear conditions by rotating to fresh cutting edges, improving operational ease without requiring complex replacement mechanisms.
2Productivity
If multiple milling tools are held simultaneously in the holder, then productivity increases, but the holder structure becomes more complex
Solution Approach 1:
The holder is designed with multiple tool receptacles (at least two, preferably six) that can simultaneously hold multiple milling tools. This multi-functional holder allows several tools to be stored and accessed, enabling higher feed rates and productivity while maintaining a relatively simple integrated structure that serves both storage and tool presentation functions.
3Adaptability or versatility
If the milling tool is detachably attached to the holder, then tool replacement is enabled, but the attachment mechanism adds complexity
Solution Approach 1:
The milling tool is designed with a detachable attachment mechanism that includes a clamping screw and fastening area. This extraction principle allows the tool to be easily removed and replaced in the holder when needed, providing adaptability for tool changes while keeping the attachment mechanism relatively simple through the use of basic mechanical fastening elements rather than complex locking systems.
Data Source
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AI summary
A milling tool cuts an outer thread and is held in a chuck. The milling tool has two alternative retention positions within the chuck. In the first position the tool is presented to a first part of a workpiece, and in a second position the tool is presented to a second part of the workpiece that cannot be reached from the first position.