Adjustable Cassette for Precision Turning and Milling
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Solution Overview
Problem
Existing tools for turn-turn broaching or external milling lack the ability to adjust the position of cutting inserts radially and with respect to the angle of inclination of active cutting edges, limiting their precision and versatility in machining workpieces.
Innovation Solution
The tool features a cassette with an insert seat and adjustable side faces, allowing radial and angular adjustments via an adjusting body and clamping mechanism, enabling precise positioning of cutting inserts, including axial adjustments for tangentially mounted inserts, using double-threaded screws and wedge surfaces for fine-tuned settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If cutting inserts are fixed in cassettes without adjustment capability, then the tool structure is simple, but the machining precision and versatility are limited
Solution Approach 1:
The cassette is designed with adjustable components including an adjusting body with wedge surface that can be displaced radially, and groove walls that can be tilted relative to each other. This dynamic adjustability allows the cutting insert position and angular orientation to be modified, resolving the contradiction between fixed simple structure and adjustable precision machining capability
Solution Approach 2:
The system enables parameter changes by allowing radial displacement of the adjusting body and angular tilting of groove walls through the adjusting screw mechanism. These parameter modifications directly control the position and orientation of cutting inserts, achieving precise machining while maintaining a relatively simple overall tool structure
2Adaptability or versatility
If cutting inserts are made adjustable radially and angularly, then machining versatility is improved, but the device complexity increases
Solution Approach 1:
The cassette design integrates multiple adjustment functions into a single component system. The adjusting body with wedge surface and the groove wall tilting mechanism work together to provide both radial positioning and angular orientation capabilities, achieving multi-functionality without requiring separate adjustment mechanisms for each degree of freedom
Solution Approach 2:
The adjusting body acts as an intermediary element between the adjusting screw and the cutting insert. It translates the linear motion of the adjusting screw into radial displacement and groove wall tilting, thereby controlling the cutting insert position and orientation through a single adjustment mechanism rather than multiple independent mechanisms
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
This solution allows for the production of true-to-size cylindricity or slightly convex surface contours, enabling precise machining of workpieces by adjusting the angular position of cutting edges, enhancing the tool's adaptability and machining accuracy.
Implementation Method 1
The adjusting body (27) has a wedge surface (271) with which the adjusting screw (28) engages
Implementation Method 2
In order to adjust the distances between and inclinations of the groove walls, the cassette has a hole which is disposed vertically to the groove walls and passes through the latter and in which a double-threaded screw is arranged
Data Source
AI summary
The invention relates to a tool for turning/turn broaching or external milling of work pieces rotating about longitudinal axes during machining, comprising a disc-shaped tool support having cassettes (20) disposed peripherally thereon, each of said cassettes containing a cutting insert (12, 13, 14), said cassettes being fastenable to a circular, partially circular or segmented removable support (11) that is fastened either directly to a machine spindle or indirectly to a machine spindle by way of an adapter. According to the invention, the cassette (20) comprises a plate seat with a seating surface (21) and two lateral surfaces (22, 23) as contact surfaces for the cutting insert (12, 13, 14) and can be radially adjusted by way of an adjustment member (27) and can be fastened by way of a clamping member (18); the cassette (20) further comprises a slit-shaped groove (30) parallel to the seating surface (21) for the cutting insert (12, 13, 14), said groove having opposing groove walls with a distance and angle with respect to one another that are adjustable by way of an adjustment screw (33) such that the angular position of the seating surface (20) can be changed.