Diameter-Enlarged Hole Cutting Jaw With Integrated Dust Suction
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Solution Overview
Problem
Existing diameter-enlarged hole portion forming devices generate powder dust during cutting, leading to environmental deterioration, component malfunction, and wear due to dust accumulation.
Innovation Solution
A diameter-enlarged hole portion forming device with a bow jaw and cutter blade configuration that includes a suction passage with sloped surfaces and recesses to efficiently remove powder dust through multiple suction ports and grooves, preventing dust accumulation and ensuring smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a hole wall cutting blade moves along a guide groove to form a diameter-enlarged hole portion, then cutting performance is improved, but powder dust is generated causing deterioration of work environment and component malfunction
Solution Approach 1:
The harmful powder dust is extracted and removed from the working area through a suction device with suction ports positioned at strategic locations (guide groove bottom, guide groove side, and distal end surface), separating the dust removal function from the cutting function to resolve the contradiction between maintaining cutting performance and eliminating dust harm
Solution Approach 2:
A suction device acts as an intermediary element between the cutting blade and the environment, capturing powder dust before it can cause harm to the work environment or component malfunction, thus mediating between the cutting operation and its harmful effects
2Reliability
If powder dust enters between components of the diameter-enlarged hole portion forming device, then component malfunction and wear occur, but adding protective measures increases device complexity
Solution Approach 1:
The suction ports are positioned in advance at the guide groove bottom, side, and distal end surface to prevent powder dust from entering between components before it can cause malfunction or wear, protecting components through preliminary dust capture rather than reactive protective measures
Solution Approach 2:
The suction device serves multiple functions simultaneously: it removes powder dust from the work environment, prevents dust from entering between components, and maintains cutting performance by keeping the guide groove clear, thereby protecting reliability without proportionally increasing device complexity
3Productivity
If the distal end surface is inserted in the deeper side of the hole, then powder dust removal efficiency is improved, but the structure becomes more complex
Solution Approach 1:
The distal end surface is merged with the guide structure and equipped with suction ports, combining the guiding function and dust removal function into a single integrated component. This allows the distal end surface to be inserted deeper into the hole for efficient dust capture without requiring a separate complex dust removal mechanism
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 device effectively removes powder dust, preventing component malfunction and improving the work environment by reducing dust exposure and simplifying maintenance, while maintaining efficient cutting performance.
Implementation Method 1
a suction passage (80) that includes a flow passage (81), the flow passage including a suction port (81a) that is open at the distal end surface
Data Source
AI summary
A device for forming a diameter-enlarged hole portion by cutting into a hole that is formed in a workpiece, the device including: a bow jaw including a shaft and a guide, the guide including a distal end surface and an sloped surface, the distal end surface being provided on an opposite side of the guide from the shaft, the sloped surface being sloped from the shaft side of the guide toward the distal end surface side of the guide in a direction away from a center axis of the shaft; and a cutter blade including a cutting portion whose distal end is provided with a cutting edge, the cutting portion being slidable along the sloped surface. The bow jaw further includes a suction passage that includes a flow passage, the flow passage including a suction port that is open at the distal end surface.