Cutter Blade Wedge Angle and Profiling Surface for Composite Materials
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Solution Overview
Problem
Composite materials like FRP, CFRP, and GFRP cause damage to cutting tools due to their characteristics, leading to increased costs and tool wear, necessitating the use of expensive tools and special processing methods.
Innovation Solution
A cutter blade with a large wedge angle and a profiling surface is designed to process composite materials without chipping or breakage, eliminating the need for expensive tools and special methods, and allowing the cutting edge to be restrained from digging into the workpiece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional cutter blades are used to process composite materials, then processing can be performed, but the cutting edge portion suffers from damage such as chipping and breakage
Solution Approach 1:
The invention changes the geometric parameters of the cutter blade by setting the wedge angle to 90 degrees or more, which fundamentally alters how the cutting edge interacts with composite materials. This parameter change distributes stress more effectively, preventing chipping and breakage while maintaining processing capability
Solution Approach 2:
The invention adds a profiling surface that extends in the radial direction from the cutting edge, creating a new dimensional feature. This profiling surface guides the cutter blade along the workpiece surface, preventing the cutting edge from digging in and causing damage to composite materials
2Duration of action of stationary object
If expensive cutter blades and special processing methods are used, then tool lifetime is extended, but processing costs increase
Solution Approach 1:
By changing the wedge angle to 90 degrees or more, the invention creates a cutter blade geometry that is inherently more suitable for composite materials, eliminating the need for expensive specialized tools while achieving extended tool lifetime through reduced damage
Solution Approach 2:
The invention enables the use of standard, more economical cutter blade materials and designs that would normally have short life, but the geometric modifications (wedge angle and profiling surface) extend their effective lifetime sufficiently for cost-effective processing of composite materials
3Productivity
If the cutting edge portion digs into the workpiece, then processing continues, but the cutting edge portion becomes damaged
Solution Approach 1:
The profiling surface extending in the radial direction creates a guiding feature that constrains the cutting edge's interaction with the workpiece. This additional dimensional feature prevents digging in by providing surface contact guidance, maintaining processing continuity while protecting cutting edge integrity
Data Source
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AI summary
A cutter blade and a processing device enable processing of a composite material, for example, FRP, without using an expensive cutter blade and employing a special processing method. In a processing device (1) in which pneumatic cylinders (5A, 5A) are provided in a six-axis vertical articulated robot (3) and a cutter blade (10) is provided in the six-axis vertical articulated robot (3) via the pneumatic cylinders (5A, 5A), the cutter blade (10) includes: profiling portion (10B) that corresponds to a resin molding (20); and a cutting edge portion (10A) including a blade edge positioned in the vicinity of the profiling portion (10B) and having a wedge angle (β) of 15° to 120°, the profiling portion (10B) and the cutting edge portion (10A) being integrated.