Milling Tool Three-Point Support Cutting Element Positioning
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Solution Overview
Problem
Existing milling tools require precise adjustment and frequent equalization of cutting edge lengths and are prone to dirt accumulation in receptacles, complicating the insertion and positioning of cutting elements.
Innovation Solution
A three-point support system between the cutting element and the support member, with three support pads on the cutting element or receptacle, ensures precise positioning and easy cleaning, eliminating the need for edge equalization and reducing dirt-related issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cutting elements are mounted in receptacles with flat bottom contact, then the cutting elements can be easily inserted, but the projecting length of cutting edges cannot be precisely controlled and requires frequent equalization
Solution Approach 1:
The flat bottom contact surface is segmented into three discrete support points arranged in a triangular pattern. This segmentation provides precise positioning (determining the greatest distance of the cutting edge to the bottom) while maintaining ease of insertion, as the three-point support naturally guides the cutting element into the correct position without requiring complex adjustment mechanisms.
Solution Approach 2:
The three-point support structure on the receptacle bottom automatically positions the cutting element correctly upon insertion. The geometry of the three support points self-determines the orientation and projecting length of the cutting edge, eliminating the need for external equalization processes or complex adjustment procedures.
2Manufacturing precision
If the receptacle bottom is cleaned thoroughly to remove dirt particles, then cutting elements can be properly positioned, but the cleaning process is time-consuming and may damage the receptacle or introduce unevenness
Solution Approach 1:
Instead of requiring the entire receptacle bottom to be clean and flat, only three local support points need to be clean and properly formed. This local quality approach reduces cleaning time and effort significantly, as dirt can be present in other areas without affecting positioning precision. It also reduces the risk of damage during cleaning, as aggressive cleaning methods are not needed across the entire surface.
3Productivity
If multiple cutting elements are installed without precise initial positioning, then the tool can be assembled quickly, but the cutting edges will have uneven projecting lengths requiring equalization
Solution Approach 1:
The three-point support structure is pre-formed on the receptacle bottom before cutting elements are installed. This preliminary action establishes the precise positioning geometry in advance, so that when cutting elements are quickly inserted, they automatically assume the correct orientation and projecting length. This eliminates the need for post-assembly equalization while maintaining high assembly speed.
Data Source
AI summary
A milling tool has a support member with an exterior surface with at least one receptacle, wherein the at least one receptacle has a bottom. At least one cutting element provided with a cutter having a cutting edge is positioned in the at least one receptacle. A three-point support is arranged between the at least one cutting element and the bottom of the at least one receptacle for positioning the cutting edge relative to the bottom of the at least one receptacle. The three-point support comprises three support pads arranged at a bottom side of the at least one cutting element and/or three projections arranged at the bottom of the at least one receptacle.