Blade Mounting Device Impact Force Transmission
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Solution Overview
Problem
Conventional electric carving machines have insufficient cutting ability for large carvings due to small output force and can cause deformation of blades when mounted on impact tools like pneumatic breakers or hammer chisels.
Innovation Solution
A blade mounting device that transmits impact force via complementary tapered surfaces and air cooling to reduce blade deformation, allowing secure mounting and easy removal of blades on impact tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a blade of a pushing cut tool is mounted on an impact tool to increase output force, then cutting ability for large carvings is improved, but the blade may be deformed due to strong impact force
Solution Approach 1:
A blade mounting device is introduced as an intermediary component between the impact tool and the blade. This device includes a blade holder with an inverted tapered hole and a tang holder with a tapered portion, creating a gradual transition zone that mediates the transmission of impact force and reduces direct shock to the blade
Solution Approach 2:
The inverted tapered hole and tapered portion configuration provides beforehand cushioning by distributing impact force gradually through the tang holder before it reaches the blade. The tapered geometry acts as a shock-absorbing mechanism that prepares for and mitigates the harmful effects of impact forces before they can deform the blade
2Manufacturing precision
If the transmission surface of impact force is enlarged to reduce blade deformation, then blade deformation is reduced, but the device structure becomes more complex
Solution Approach 1:
The blade holder and tang holder are merged into a single integrated component that combines multiple functions: securing the blade, holding the tang, providing cooling passages, and distributing impact forces. This merging reduces the number of separate parts while maintaining the enlarged transmission surface for impact force
3Temperature
If air cooling is implemented to reduce temperature rise, then temperature rise is reduced, but the device complexity increases
Solution Approach 1:
The blade holder is designed with multi-functionality, serving both as a mounting structure for the blade and as a cooling device. The through hole and center hole that pass through the blade holder serve dual purposes: structural integrity and air cooling pathways, eliminating the need for separate cooling components
Solution Approach 2:
The cooling function is merged into the mounting structure by incorporating through holes and center holes directly into the blade holder geometry. This integration allows air to flow through the same component that secures the blade, providing cooling without adding separate cooling装置
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
Enhances cutting ability for large carvings by minimizing blade deformation and temperature rise, facilitating the use of blades on impact tools for various applications.
Implementation Method 1
an impact force applied from the impact tool to the blade mounting device is transmitted to the blade via an inner surface of the inverted tapered hole and the inclined shape surface
Implementation Method 2
the air can be supplied through these through hole and center hole, thereby ensuring a reduced temperature rise in a region where the impact force is transmitted by cooling with the supplied air
Data Source
AI summary
A blade mounting device allows a blade of a pushing cut tool that cuts a workpiece by pushing a cutting edge forward to be mounted on an impact tool. This blade mounting device has a blade mounting portion for mounting the blade on the blade mounting device and a tool mounting portion secured to the blade mounting portion in order to mount the blade mounting device on the impact tool. The blade mounting portion has a front end portion where an inverted tapered hole complementary to an inclined shape surface formed on a tang of the blade is formed. The tool mounting portion is provided with a through hole perpendicular to the center axis and a center hole that reaches a through hole from a front side end surface of the tool mounting portion along the center axis.