Cutting Tool Holding Mechanism for Road Milling Machines
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Solution Overview
Problem
Existing cutting tool holding mechanisms for road milling machines are complex in design, have lower mechanical strength, and are costly due to multiple components, making them difficult to assemble and maintain, especially when changing tools, as they require precise alignment and are affected by reaction forces.
Innovation Solution
A cutting tool holding mechanism featuring a base with a receiving groove and limiting grooves, a handle with positioning surfaces, and a locking assembly with a locking screw and guiding bolt, allowing for auto-centering and secure attachment of the handle to the base, enabling easy tool changes and improved mechanical strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If multiple components (base, clamping portion, handle) are used to provide enough clamping force, then the clamping force is sufficient, but the design becomes complex and manufacturing cost increases
Solution Approach 1:
The patent combines the base and clamping portion into a single integrated component, eliminating the need for separate parts and complex coordination. This unified structure maintains sufficient clamping force while simplifying the design and reducing manufacturing complexity.
2Force
If multiple components are assembled together to provide enough supporting force, then the clamping force is sufficient, but the mechanical strength decreases
Solution Approach 1:
By integrating the base and clamping portion into one piece, the patent eliminates weak points at the interfaces between multiple components. The unified structure provides continuous material support, enhancing overall mechanical strength while maintaining the required supporting force.
3Force
If screws are inserted along the horizontal direction to fasten the cutting tool holding mechanism, then the cutting tool is secured, but the separating operation is affected by other mechanisms and tool change becomes difficult
Solution Approach 1:
The patent inverts the traditional fastening approach by using a locking member that moves vertically along the milling drum axis rather than horizontally. This allows the locking member to be accessed and operated from the end of the milling drum, enabling easy tool changes without interference from adjacent cutting tool holding mechanisms.
4Reliability
If precise coordination of shapes is required for handle, clamping portion and base, then the cutting tool is securely held, but the assembly time increases and productivity decreases
Solution Approach 1:
The patent eliminates the need for precise shape coordination between multiple components by combining them into a unified structure. This reduces assembly complexity and time while maintaining secure holding through the integrated design and locking mechanism.
5Strength
If a one-piece base is used, then the mechanical strength increases and design is simplified, but the locking mechanism becomes more complex
Solution Approach 1:
The patent segments the locking mechanism into distinct functional elements (locking member, guiding groove, guiding bolt, limiting groove) that work together in a coordinated manner. This modular approach to the locking mechanism provides reliable operation while the one-piece base maintains structural strength and design simplicity.
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 mechanism simplifies design and assembly, increases mechanical strength, reduces manufacturing costs, and facilitates easier tool changes and maintenance by allowing parallel alignment with the milling force direction, ensuring secure tool attachment and improved operational efficiency.
Implementation Method 1
The guiding bolt is disposed in the limiting hole and abutted against the guiding groove to inhibit the locking member from rotating
Implementation Method 2
The locking screw includes a head portion and a screwing portion. The screwing portion is for protruding into the limiting groove. The locked member which is received inside the limiting groove includes a screwed hole and a guiding groove. The screwed hole is for securing the screwing portion
Implementation Method 3
The locking member is for moving along the central axis to push against the butting portion
Data Source
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AI summary
A cutting tool holding mechanism (100, 500) includes a base (200, 600), a handle (300, 700) and a locking assembly (400). The base (200, 600) includes an abutting portion (210, 610), a receiving groove (20, 220, 620), at least one limiting groove (230, 630) and at least one limiting hole (231, 631). The limiting hole (231, 631) is disposed at the base (200, 600) and communicated with the limiting groove (230, 630). The handle (300, 700) abutted against the base (200, 600) includes a sleeved portion (310, 710) and a plurality of positioning surfaces (301, 701). The locking assembly (400) includes a packing ring (410), a locking screw (420), a locking member (430) and a guiding bolt (440). The locking member (430) received inside the limiting groove (230, 630) includes a screwed hole (431) and a guiding groove (432). The guiding groove (432) disposed at one side of the locking member (430) and is aligned with the limiting hole (231, 631) when the locking member (430) is disposed inside the limiting groove (230, 630). The guiding bolt (440) is disposed in the limiting hole (231, 631) and is abutted against the guiding groove (432) to inhibit the locking member (430) from rotating.