Ejector Suction Blade Mount Eliminates Separate Vacuum Source
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Solution Overview
Problem
Conventional cutting blade mounting mechanisms require a separate negative pressure generation source, which is not always available, making it inconvenient for replacing cutting blades in cutting apparatuses.
Innovation Solution
A cutting blade mounting mechanism that utilizes an air supply unit to generate negative pressure through an ejector type blade suction section, eliminating the need for a separate negative pressure generation source by using air passages to create suction and fix the cutting blade.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate negative pressure generation source is used to fix the cutting blade, then the blade fixation reliability is improved, but the device complexity increases
Solution Approach 1:
The patent combines the negative pressure generation function into the existing air supply unit that is already present in the cutting apparatus. The air supply unit's air passage is utilized to generate negative pressure through a suction port, eliminating the need for a separate negative pressure generation source while maintaining reliable blade fixation.
Solution Approach 2:
The air supply unit is designed to serve multiple functions: it supplies air for cooling/lubrication during cutting operations and generates negative pressure for cutting blade fixation. This multi-functionality reduces the overall number of components needed in the system.
2Reliability
If manual replacement with tools is used, then the mounting means is protected from damage, but the replacement time increases
Solution Approach 1:
The patent replaces mechanical clamping systems with a pneumatic suction system. The negative pressure generated by the air supply unit through the ejector suction section holds the cutting blade in place, allowing for quicker replacement without the need for manual tool operations while maintaining secure fixation during 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
Enables efficient and convenient replacement of cutting blades without the need for additional equipment, as the air supply unit provides the necessary negative pressure for blade fixation, reducing operational time and complexity.
Implementation Method 1
an ejector type blade suction section having a first air passage connecting a supply port supplied with air from the air supply unit and a discharge port discharging the air, and a second air passage connecting a suction port opening to a side of the support surface of the flange section and the first air passage, and the ejector type blade suction section sucking the cutting blade by a negative pressure applied from the suction port
Data Source
AI summary
A cutting blade mounting mechanism for mounting a cutting blade to a tip portion of a spindle includes: a blade mount mounted to the tip portion of the spindle; and an air supply unit supplying air to the blade mount. The blade mount includes: a columnar boss section inserted into a through-hole provided in an annular base of the cutting blade; a flange section projecting in a radial direction from a side of a base end of the boss section and having a support surface supporting the cutting blade; and an ejector type blade suction section having a first air passage connecting a supply port supplied with air from the air supply unit and a discharge port discharging air, and a second air passage connecting a suction port opening to a side of the support surface of the flange section and the first air passage.