Milling Tool Cutting Element Groove Positioning
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Solution Overview
Problem
Existing routing tools for machining nonmetallic materials face challenges with noise reduction, weight minimization, and optimal utilization of limited construction space, often resulting in poor machining quality and tool life due to vibration issues and inaccurate positioning of cutting elements.
Innovation Solution
A routing tool design featuring a rounded region opposite the blade with a groove at right angles, a radially extending web, and a central tapped hole that allows cutting elements to be laterally positioned via a central groove, reducing weight and noise while maintaining precise alignment and chip space for efficient machining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the supporting body is formed to extend beyond the blade region to accommodate the recess for cutting elements, then the cutting elements can be properly positioned and supported, but the tool weight increases and construction space is reduced
Solution Approach 1:
The supporting body is segmented into a cylindrical main body and a locally extended region. The extension is only where needed to accommodate the recess for cutting element positioning, rather than extending the entire supporting body. This segmentation allows precise cutting element positioning while minimizing unnecessary material and weight.
Solution Approach 2:
The supporting body has non-uniform geometry with a localized extension only in the region where the recess is needed for cutting element accommodation. The cylindrical portion maintains low weight, while the local extension provides the necessary construction space for precise positioning, achieving local quality optimization.
2Strength
If the supporting body is formed to extend beyond the cutting elements to provide support, then cutting elements can be supported against cutting forces, but the tool width exceeds the actual cutting width reducing construction space utilization
Solution Approach 1:
The supporting body structure is segmented into the minimal extension required for recess accommodation and the rest of the tool body. This allows the supporting body to provide necessary support strength only where needed, without unnecessarily increasing the overall tool width, thus optimizing construction space utilization.
Solution Approach 2:
Instead of making the supporting body extend uniformly beyond all cutting elements, the design inverts the approach by having the supporting body remain compact and only locally extending where the recess is absolutely necessary, achieving efficient space utilization while maintaining support capability.
3Weight of moving object
If the blades project only slightly beyond the lateral surface of the supporting body to reduce weight and noise, then the tool weight and noise are reduced, but the tool can be reground less frequently and vibration behavior deteriorates
Solution Approach 1:
The cutting elements are designed with replaceable blades that can be individually replaced when worn, rather than regrounding the entire tool. This dynamic replacement system allows the tool to maintain optimal performance throughout its life, addressing the tool life concern while keeping blades projecting slightly to minimize weight and noise.
Solution Approach 2:
Instead of regrounding blades to extend tool life, the design allows for discarding worn blades and replacing them with fresh ones. This approach accepts limited blade projection for reduced weight and noise, while maintaining effective tool life through blade replacement rather than regeneration.
4Productivity
If the cutting elements are positioned as close to the edge of the supporting body as possible to maximize cutting width, then the cutting width is maximized, but the supporting body must enclose the cutting elements requiring precise grinding and increasing complexity
Solution Approach 1:
The positioning structure is segmented into a localized recess with specific geometric features (flat surface, perpendicular side surface) that simplify the positioning mechanism. This segmented approach allows cutting elements to be positioned close to the edge for maximum cutting width while avoiding the need for complex enclosing structures and precise grinding of the entire supporting body.
Solution Approach 2:
The supporting body has localized geometric features (flat positioning surface, perpendicular side surface) only where needed for cutting element positioning, rather than requiring the entire supporting body to be precisely ground. This local quality approach maximizes cutting width while minimizing overall structural complexity.
Data Source
AI summary
A milling tool for working non-metal materials, in particular wood, engineered wood, and plastic, includes a carrier body, a plurality of cutting elements, which can be inserted into said body on the periphery in a corresponding number of openings extending in the radial direction and can be screwed to the carrier body by way of a bore and which have a plate-shaped and in the cross-section a substantially triangular-shaped design and on a side edge are provided with a blade. The cutting element includes: the region located opposite of the blade is rounded, a groove extending substantially at a right angle to the blade is provided in the bottom, the bore divides the groove preferably into two regions. The opening includes: a web, which extends radially upward from the bottom of the opening serving as a support surface for the cutting element and which corresponds with the groove, a radial threaded bore, which preferably divides the web into two regions, and the cutting element has contact with the opening only with the bottom thereof, a side wall of the groove and part of the region located opposite of the blade.