Rotating Cutting Tool Dovetail Clamping Mechanism
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Solution Overview
Problem
Existing rotating cutting tools require direct screw connections for segment attachment, making the exchange process complex and not easily adaptable for secure, precise positioning.
Innovation Solution
A rotating cutting tool design featuring a double-sided dovetail-shaped clamping piece that engages in recesses of the base body and segments, combined with a wedge-shaped design, allowing for secure attachment and easy release without additional securing means, utilizing web-shaped fitting elements and a screw with different thread pitches for enhanced wedging and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct screw connections are used for segment attachment, then secure connection is achieved, but the exchange process becomes complex and time-consuming
Solution Approach 1:
The attachment mechanism is divided into separate functional elements: a clamping piece for securing the segment, and a wedge element for actuating the clamping piece. This segmentation allows each element to perform its specific function efficiently, simplifying the overall exchange process while maintaining secure connection.
Solution Approach 2:
The wedge element serves as an intermediary between the screw and the clamping piece. Instead of the screw directly securing the segment, it actuates the clamping piece through the wedge, which then applies the clamping force. This intermediary mechanism simplifies the direct attachment process while ensuring secure connection.
2Reliability
If multiple securing means are used for segment attachment, then connection security is improved, but the exchange process becomes more complex
Solution Approach 1:
Multiple securing functions are merged into a single integrated clamping piece that engages with the base body through dovetail-shaped interfaces. The clamping piece combines positioning, clamping, and securing functions in one element, eliminating the need for multiple separate securing means and simplifying the exchange operation.
Solution Approach 2:
The dovetail-shaped interfaces and wedge mechanism create a self-aligning and self-securing system. When the clamping piece is actuated by the wedge, it automatically engages with the base body features and secures the segment without requiring additional alignment steps or multiple securing operations.
3Manufacturing precision
If segments are firmly clamped to the base body, then positioning precision is maintained, but segment removal becomes difficult
Solution Approach 1:
The clamping mechanism transitions from a static fixed position to a dynamic state where the clamping piece can be easily actuated by the wedge element. The dovetail-shaped interfaces allow the clamping piece to move along a predetermined path, enabling firm clamping during operation and easy release when the wedge is actuated, thus achieving both positioning precision and ease of removal.
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
Enables simple, secure, and precise exchangeable attachment of segments to the base body, ensuring reliable positioning and easy removal without altering the alignment, while being easy to manufacture and maintain.
Implementation Method 1
combined with the wedge-shaped design of the clamping piece in the axial direction A, a secure connection between the segment and the base body is achieved
Implementation Method 2
The clamping piece is shifted in the axial direction A in a wedge-shaped direction until it is clamped sufficiently tight. The fitting elements with the mutual contact surfaces between the base body and the segment ensure a precise and secure positioning
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The invention relates to a rotating cutting tool with a base body -1-, to the circumference of which at least one segment -2- is interchangeably attached. The base body -1- and segment -2- have fitting elements -3- with mutual contact surfaces -4-, -5-. The interchangeable attachment is effected by a dovetail-shaped clamping piece -7-, which is additionally wedge-shaped in the axial direction. The first dovetail-shaped part -9- of the clamping piece -7- engages in a corresponding recess in the base body -1-, and the second dovetail-shaped part -10- of the clamping piece -7- engages in a corresponding recess in the segment -2-.