Cutting Blade With Varying Surface Inclination For High-Speed Slicing
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Solution Overview
Problem
Existing cutting blades, including sickle and circular blades, often suffer from cutting defects such as tearing, ripping, folding, or collapsing of food product slices during high-speed slicing operations, leading to inconsistent cutting quality and unsightly or unpackageable portions.
Innovation Solution
The cutting blade features a unique toothing design where each cutting surface is inclined relative to a clamping plane, with varying inclinations along the peripheral edge. This design includes a lead angle for cutting edges, ensuring an uninterrupted cutting edge that improves cutting efficiency and consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional cutting blades (sickle or circular) are used for high-speed slicing, then slicing speed can be achieved, but cutting defects such as tearing, ripping, folding, or collapsing of slices occur
Solution Approach 1:
The cutting blade applies local quality by providing different cutting surface inclinations at different locations along the peripheral edge. The inclination angle varies from one cutting surface to the next, with each cutting surface having a specific inclination relative to the clamping plane. This localized variation in cutting geometry allows the blade to adapt to different cutting conditions along its path, preventing uniform cutting defects while maintaining high-speed operation.
Solution Approach 2:
The cutting blade implements dynamics through its toothing design where cutting surfaces have varying inclinations that create a dynamic cutting action. As the blade rotates, successive cutting surfaces with different inclinations engage the product, creating a progressive cutting effect that adapts to the material being sliced. This dynamic approach prevents the static cutting defects that occur with conventional uniform blade designs.
2Ease of manufacture
If conventional toothing design is used, then manufacturing is simpler, but cutting defects such as tearing and ripping occur
Solution Approach 1:
Rather than using a uniform toothing design throughout the blade, the invention applies local quality by varying the inclination of each cutting surface relative to the clamping plane. Each cutting surface has a specific inclination angle that differs from its neighbors, creating localized variations in cutting action that prevent tearing and ripping while remaining manufacturable through standard grinding or machining processes.
Solution Approach 2:
The invention changes the geometric parameter of cutting surface inclination along the peripheral edge of the blade. By varying this parameter from one cutting surface to the next, the blade creates different cutting angles that prevent consistent defect patterns. This parameter variation can be implemented through controlled manufacturing processes while eliminating the harmful cutting defects.
3Ease of manufacture
If uniform cutting surfaces are used across the peripheral edge, then manufacturing is easier, but cutting quality is inconsistent across the cutting width
Solution Approach 1:
The blade design transitions from uniform to non-uniform by assigning different inclination angles to cutting surfaces at different locations along the peripheral edge. This local quality approach ensures that each region of the blade is optimized for its specific position, improving cutting quality consistency across the entire cutting width while maintaining manufacturability through systematic variation rather than random complexity.
Data Source
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AI summary
The invention relates to a cutting knife, in particular a sickle knife or spiral knife, for a device for slicing food products, in particular for a high-speed slicer, which rotates about a rotary axis during a cutting operation, with a radially outer circumferential edge acting as a cutting edge, which has a curved profile about the rotary axis, and with a plurality of cutting teeth arranged successively distributed along the circumferential edge, wherein each cutting tooth has a cutting edge comprising a cutting surface and a cutting edge radially outward limiting the cutting surface, wherein each cutting surface is inclined relative to a clamping plane perpendicular to the rotary axis and/or a cutting plane, and wherein the inclination of the cutting surfaces varies along the circumferential edge.