Knife Unit Positioning Slot for Fast Cutter Replacement
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Solution Overview
Problem
Disc-type cutting machines face challenges in cutter replacement, calibration, and positioning due to complex and time-consuming processes, leading to increased errors and safety hazards.
Innovation Solution
A cutter module with a cutter plate and knife units featuring inverted trapezoidal positioning slots and knife holders, allowing for quick and accurate cutter replacement, positioning, and adjustment of extension length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional cutter fixation methods are used, then the cutter can be held in place, but the cutter replacement process becomes complex and time-consuming
Solution Approach 1:
The cutter assembly is divided into modular components: the cutter body, the holder with positioning slot, and the positioning protrusion. This segmentation allows the cutter to be quickly detached and replaced by simply removing the holder from the positioning slot, reducing replacement time while maintaining stability through the precise fit of the modular components.
Solution Approach 2:
The positioning protrusion is extracted as a separate functional element from the cutter body and integrated into the holder structure. This extraction allows the cutter to be easily removed from the positioning slot by withdrawing the holder, enabling quick replacement while the protrusion remains embedded in the holder to ensure stable reinstallation.
2Manufacturing precision
If traditional cutter positioning methods are used, then the cutter can be positioned, but the calibration and positioning process becomes complex and time-consuming
Solution Approach 1:
The positioning slot is designed with non-uniform width: narrower at the installation position and wider at the opening. This local quality variation provides precise positioning when the cutter is installed while facilitating easy insertion and removal. The varying width creates a natural stopping point at the narrow section, ensuring accurate positioning without complex calibration mechanisms.
Solution Approach 2:
The positioning slot and positioning protrusion employ asymmetric geometry where the slot width varies along its length. This asymmetric design creates a unique fit orientation, ensuring the cutter can only be installed in the correct position while allowing easy removal by withdrawing from the wider opening end. The asymmetry eliminates the need for complex calibration procedures.
3Adaptability or versatility
If the cutter is designed with fixed length, then the structure is simple, but the processing range is limited
Solution Approach 1:
The cutter length is made dynamically adjustable rather than fixed. The holder can be positioned at different locations along the cutter body, and the positioning slot can accommodate cutters of varying lengths. This dynamic configuration allows the same holder structure to work with multiple cutter lengths, expanding the processing range without requiring multiple specialized holders.
4Adaptability or versatility
If the cutter extension length is made adjustable, then the processing flexibility is improved, but the positioning accuracy becomes difficult to maintain
Solution Approach 1:
The positioning slot incorporates local quality variation with a narrow section at the positioning location and a wider opening. When the cutter is installed, the narrow section provides precise positioning and locates the cutter extension length accurately. The wider opening facilitates easy insertion and removal while the narrow section ensures that once installed, the cutter maintains precise positioning and accurate extension length.
Data Source
AI summary
A cutter module including a cutter plate and at least one knife unit is provided. The cutter plate includes a base and at least one positioning slot. The positioning slots are configured to distribute along the edge of the base. Each positioning slot is sandwiched between two adjacent side walls that protrude from the base. A positioning slot has a first spacing and a second spacing. The second spacing is closer to the edge than the first spacing, and the first spacing is larger than the second spacing. A knife unit is correspondingly disposed in a positioning slot. The knife unit has a first width and a second width and the first width is larger than the second width.