Spherical Clay Milling Bit Geometry for Heat and Vibration Reduction
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Solution Overview
Problem
Current milling bits for industrial clay are not geometrically optimized, leading to increased cutting resistance, vibrations, and surface degradation due to heat generation and material adhesion, which limits cutting speed and quality.
Innovation Solution
A milling bit with a spherical ending and specific geometry, featuring a cylindrical, conical, or paraboloid cutting edge with a spherical anterior part and optimized flute design to reduce cutting resistance and facilitate chip evacuation, including a positive rake angle and reduced cutting blade thickness to improve cutting efficiency and surface quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the rotation speed and feed rate of the milling bit are increased to improve productivity, then the cutting speed increases, but the quality of the milling surface degrades due to increased resistance, resonant vibrations, and heat generation causing clay melting and adhesion
Solution Approach 1:
The patent changes the geometric parameters of the milling bit, specifically the helix angle of the cutting edges and the configuration of evacuation passages, to optimize cutting performance at higher speeds while maintaining surface quality
Solution Approach 2:
The patent implements an evacuation system using pneumatic principles, with passages that conduct away chips and cooling air through the milling bit structure, reducing heat accumulation and material adhesion at high cutting speeds
2Productivity
If the milling bit geometry is optimized for high-speed cutting, then cutting efficiency improves, but the tool structure becomes more complex
Solution Approach 1:
The milling bit is segmented into functional zones with cutting edges at different angles and positions, allowing each segment to perform optimized cutting functions while maintaining overall structural efficiency
Solution Approach 2:
The milling bit structure serves multiple functions simultaneously: cutting, chip evacuation, and cooling, integrated into a single tool design that achieves high-speed performance without proportionally increasing complexity
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
The solution reduces cutting resistance and heat generation, enhancing cutting speed and surface quality, thereby improving the productivity and quality of the milling process.
Implementation Method 1
The working sector has one or more longitudinal cutting teeth with helicoidal around the axis of rotation cutting edges
Implementation Method 2
The intensification of the cutting leads to an increase in resistance, appearance of resonant vibrations and melting of the working surface of the thermoplastic clay from the generated heat due to the rising friction
Implementation Method 3
Melting the clay also causes adhesion and accumulation of material on the milling bit
Data Source
Figure 1~2
Figure 3A~3F
Figure 4A~4F
AI summary
The invention refers to rotating cutting tools and more specifically to milling bits with a spherical end and one or more cutting edges designed for cutting industrial clay.The milling bit comprises: a shank (1) and a working sector (2) comprising a cutting anterior part (3), which is a portion of a hollow sphere, a cutting posterior part fixed to the shank (1), located between the shank and the spherical anterior part (3), at least one cutting tooth (5) extending along entire length of the working sector (2)with a cutting edge (8), at least one flute (6) to the cutting tooth (5) extending along length of the working sector (2) following path of the cutting edge (8). The spherical anterior part (3) of the working sector (2) is hollow and at least one cutting tooth (5) in the anterior cavity region has shape of a spherical shell element (7).