Chisel Holder With Diverging Angled Stripping Surfaces
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Solution Overview
Problem
Existing chisel holders for soil treatment machines, such as road milling machines, face issues with stability and longevity due to inadequate dissipation of machining forces and exposure to bending stresses, leading to potential breakage and inefficient absorption of transverse forces.
Innovation Solution
A chisel holder design featuring two pairs of angled removal surfaces that diverge from the plug-in attachment side to the machining side, forming a prism-shaped support, which ensures reliable force transmission and reduces load on the plug-in attachment, while also accommodating varying machining forces and transverse forces through optimized angular arrangements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a one-piece molded socket design is used with simple support surfaces, then the device complexity is reduced and ease of manufacture is improved, but the reliability deteriorates due to insufficient force dissipation and rapid cutting surface wear
Solution Approach 1:
The support body is divided into multiple functional surfaces: two first cutting surfaces and two second cutting surfaces arranged at angles to each other. This segmentation allows different surfaces to handle different force components, distributing the machining forces more effectively and preventing concentrated wear on single surfaces, thereby improving reliability while maintaining manufacturing simplicity.
Solution Approach 2:
The invention introduces angularly arranged cutting surfaces in three-dimensional space rather than simple planar support surfaces. The first and second cutting surfaces are positioned at specific angles relative to each other, creating a multi-dimensional force distribution system that enhances the tool holder's ability to dissipate forces from multiple directions, improving reliability without complicating the basic one-piece molded structure.
2Device complexity
If the chisel holder is designed with simple support surfaces, then the device complexity is reduced, but the stability deteriorates due to inability to absorb transverse forces and high bending stresses on the socket
Solution Approach 1:
The support body incorporates segmented cutting surfaces (first and second cutting surfaces) arranged at specific angles. This segmentation creates multiple force transmission paths that stabilize the chisel holder by distributing transverse forces across different surfaces, preventing excessive bending stresses on the socket while maintaining a relatively simple overall structure.
Solution Approach 2:
By arranging cutting surfaces in three-dimensional angular configurations rather than simple planar arrangements, the invention creates a stable geometric structure that resists transverse forces from multiple directions. The angular arrangement of first and second cutting surfaces forms a rigid spatial framework that enhances stability without significantly increasing device complexity.
3Ease of operation
If conventional tool holder designs are used with single support surfaces, then the ease of operation is maintained, but the productivity deteriorates at high feed rates due to insufficient force dissipation and short tool life
Solution Approach 1:
The multiple angularly arranged cutting surfaces enable effective dissipation of high machining forces generated at high feed rates. By distributing force transmission across multiple surfaces, the system maintains stable operation and extends tool life, enabling sustained high-productivity machining without compromising ease of operation.
Solution Approach 2:
The three-dimensional angular arrangement of cutting surfaces creates additional force dissipation pathways that handle the increased loads from high feed rate operations. This multi-dimensional force distribution capability enables the tool holder to maintain reliability and productivity at high speeds while preserving ease of operation through the simple one-piece molded design.
4Ease of manufacture
If the socket is designed with simple geometry, then the ease of manufacture is improved, but the strength deteriorates due to high bending stresses and risk of socket failure from fatigue
Solution Approach 1:
The socket structure is enhanced by introducing multiple angular cutting surfaces that act as additional support elements. These segmented surfaces distribute bending stresses across multiple locations rather than concentrating them, strengthening the socket against fatigue failure while maintaining the simplicity of the one-piece molded manufacturing approach.
Solution Approach 2:
By arranging cutting surfaces in three-dimensional angular configurations, the invention creates a stronger spatial framework that resists bending moments more effectively. The angular arrangement of first and second cutting surfaces forms a rigid structure that strengthens the socket without requiring geometric complexity, allowing simple molded manufacturing while improving strength and fatigue resistance.
Data Source
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AI summary
The invention relates to a chisel holder for a soil treatment machine, especially a road miller, comprising a support base to which an add-on is connected indirectly or directly on an add-on side, the support base having two first and/or two second stripping surfaces that are at angles relative each other, the supporting base having a treatment side with a chisel seat. In order to design a stable and rigid chisel holder, the first and/or second stripping surfaces diverge from the add-on side towards the treatment side.