Non-Contact Blade Holding Jig for Washer-Type Cutting Blades
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Solution Overview
Problem
Washer-type cutting blades are difficult to handle mechanically due to the absence of a grippable hub, leading to potential damage during suction-based mounting processes in cutting machines.
Innovation Solution
A blade holding jig that uses an annular flange holding portion to suction the retainer flange and a non-contact suction portion to draw the cutting blade toward the flange without direct contact, utilizing fluid flow to create a negative pressure and hold the blade in place through through holes in the flange, reducing the risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a suction-based mounting process is used to hold washer-type cutting blades, then the blades can be held without mechanical gripping, but the blades may be damaged by pressing during the suction process
Solution Approach 1:
The patent introduces a fluid (air or gas) as an intermediary medium to transfer the suction force from the suction device to the cutting blade. Instead of direct mechanical contact, the fluid creates a suction force that holds the blade without pressing, thus resolving the contradiction between ease of holding and blade damage risk
Solution Approach 2:
The patent applies pneumatic principles by using a fluid flow to create negative pressure (suction) for holding the cutting blade. The suction device generates a fluid flow that creates a pressure difference, allowing the blade to be held securely without mechanical pressing, thereby eliminating blade damage while maintaining ease of operation
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 effectively holds the washer-type cutting blade without direct contact, minimizing the risk of damage and ensuring secure mounting on the spindle, enhancing the reliability and safety of the blade replacement process.
Implementation Method 1
an annular non-contact suction portion arranged on an outer peripheral portion of the flange holding portion and configured to produce a negative pressure by ejecting a fluid toward an outer peripheral portion of the retainer flange held by the flange holding portion and to draw up the cutting blade toward the retainer flange
Implementation Method 2
The cutting blade drawn up toward the retainer flange by the non-contact suction portion is held on the retainer flange by a suction force acting from the flange holding portion via a plurality of through holes disposed through the retainer flange
Data Source
AI summary
A blade holding jig for holding a washer-type cutting blade via an annular retainer flange includes an annular flange holding portion configured to hold a first annular surface of the retainer flange under suction, and an annular non-contact suction portion arranged on an outer peripheral portion of the flange holding portion and configured to produce a negative pressure by ejection of a fluid toward the outer peripheral portion of the retainer flange held by the flange holding portion and to draw up the cutting blade toward the retainer flange. The cutting blade drawn up toward the retainer flange by the non-contact suction portion is held on the retainer flange by a suction force acting from the flange holding portion via a plurality of through holes disposed extending from a second annular surface to the first annular surface of the retainer flange.