Cutting Insert Wedge Mechanism for Fine Edge Position Adjustment
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Solution Overview
Problem
The existing rotary cutting tool's position adjustment mechanism for the cutting edge can only adjust in fixed pitches, and using a screw member for arbitrary adjustments is hindered by the presence of the cutting insert and wedge member, making it inconvenient to rotate the screw without detaching them.
Innovation Solution
An insert attachment mechanism with a screw member accessible from the outer side of the wedge member, allowing for arbitrary position adjustments of the cutting edge by advancing and retracting an adjustment member along the screw's central axis, while the wedge member maintains the cutting insert's attachment, enabling fine adjustments without detaching it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a screw member is used to adjust the position of the cutting edge by an arbitrary adjustment amount, then the position adjustment capability is improved, but the screw member cannot be rotated by a wrench unless the cutting insert or both the cutting insert and the wedge member are detached
Solution Approach 1:
The screw member is nested within the wedge member structure, with the screw shaft positioned inside the wedge member's internal space. This allows the screw to be accessible for rotation while the wedge member remains in place, resolving the contradiction between arbitrary position adjustment and ease of operation.
Solution Approach 2:
The screw member acts as an intermediary mechanism between the wedge member and the cutting insert, enabling precise position adjustment of the cutting edge without requiring removal of the cutting insert or wedge member. The screw's threaded engagement with the wedge member allows controlled movement while maintaining accessibility.
2Reliability
If the cutting insert is attached using the wedge member, then the cutting insert is securely attached, but the cutting insert or both the cutting insert and the wedge member become an obstacle preventing the screw member from being rotated
Solution Approach 1:
The screw member is positioned inside the wedge member's internal cavity, allowing the screw to be accessed and rotated without removing the wedge member or cutting insert. This nested arrangement maintains secure attachment while enabling adjustment operations.
Solution Approach 2:
The wedge member is designed with an internal space that accommodates the screw member, effectively segmenting the structure to provide access pathways. This allows the screw to be operated independently while the outer wedge member structure remains intact and secure.
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 precise arbitrary position adjustments of the cutting edge, allowing for more accurate placement and sharpening, as the screw member can be rotated without removing the cutting insert or wedge member, improving operational convenience.
Implementation Method 1
a screw member is screwed into at least one threaded hole formed in at least one of the adjustment member and the insert attachment part, the adjustment member being advanceable and retractable in a direction of a central axis of the screw member by rotating the screw member
Implementation Method 2
the wedge member is attached so as to exert a pressing force against the cutting insert and an inner wall surface of the insert attachment part by a wedge attachment member
Data Source
Figure 1
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AI summary
The present invention relates to an insert attachment mechanism (100) for detachably attaching a cutting insert (2) to an insert attachment part (21) of a tool body (3). The insert attachment mechanism comprises an adjustment member (30) and a wedge member (10). The adjustment member (30) is arranged on an inner side of the cutting inset so as to act on the cutting insert in the insert attachment part. The adjustment member is advanceable and retractable in a direction of the central axis of a screw member (40) by rotating the screw member. The wedge member is arranged together with the cutting insert on the outer side of the adjustment member in the insert attachment part and attached so as to exert a pressing force against the cutting insert and an inner wall surface of the insert attachment part. The wedge member (10) is configured such that the screw member (40) is accessible from the outer side of the wedge member (10).