Modular Cutter Head Assembly for Wood Planing Machines
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Solution Overview
Problem
The fabrication of conventional cutter head assemblies for wood planing machines is difficult and costly due to the integral formation of blade mounting blocks with screw holes in a spiral manner on the shaft.
Innovation Solution
A modular cutter head assembly featuring a shaft with cutter-mounting sleeve modules and an angularly variable positioning mechanism, where the cutter modules are secured to the sleeve modules with a guiding mechanism, allowing for easier assembly and a spiral cutting contour without the need for complex and costly fabrication of the shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If blade mounting blocks are integrally formed with the shaft in a spiral manner, then the cutting contour line can be formed, but the fabrication becomes difficult, costly and time consuming
Solution Approach 1:
The blade mounting blocks are separated from the shaft into independent components. The shaft is a simple cylindrical component, while the blade mounting blocks are separate modules that can be manufactured independently and then assembled onto the shaft, eliminating the need for complex integral formation.
Solution Approach 2:
The blade mounting blocks are extracted from the shaft structure. Instead of being integral to the shaft, they are removed as separate components that fit onto the shaft, simplifying the shaft fabrication while maintaining the spiral cutting contour functionality through the assembled configuration.
2Reliability
If blade mounting blocks are integrally formed with screw holes in a spiral manner, then the structure is complete, but the fabrication cost increases
Solution Approach 1:
The structure is segmented into the shaft and separate blade mounting blocks. The shaft is a simple cylindrical component with reduced fabrication cost, while the blade mounting blocks are separate modules that provide the spiral arrangement and screw holes, maintaining structural completeness through assembly rather than integral formation.
3Shape
If blade mounting blocks are arranged in a spiral manner on the shaft, then the cutting contour is formed, but the assembly process becomes complex
Solution Approach 1:
The assembly process is simplified by segmenting the blade mounting blocks from the shaft. The shaft is a simple cylindrical component, and the blade mounting blocks are separate modules that can be independently prepared and then assembled onto the shaft in a standardized manner, reducing the complexity of the overall assembly process.
Solution Approach 2:
The blade mounting blocks are pre-formed with their spiral arrangements and screw holes as separate components before assembly. This preliminary formation of the mounting blocks independently of the shaft simplifies the final assembly process, as the complex spiral geometry is already established in the separate modules rather than requiring complex operation during assembly.
Data Source
AI summary
A cutter head assembly for a wood planing machine includes a shaft, a plurality of cutter-mounting sleeve modules sleeved on the shaft, and a plurality of cutter modules respectively secured to the sleeve modules such that cutting edges of the cutter modules extend beyond outer wall surfaces of the sleeve modules. An angularly variable positioning mechanism includes an axially extending guiding member disposed on the mount segment, and a plurality of axially extending guided members disposed on inner wall surfaces of the sleeve modules to mate with the axially guiding member. By virtue of fitting engagement between the guiding member and a selected one of the guided member of each sleeve module that are sequentially sleeved onto the shaft, the cutting edges together define a cutting contour line that winds around the shaft.