Bit Holder Removal Tooling With Pry-and-Impact Actuation
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Solution Overview
Problem
The removal of bit holders from the base blocks of milling drums is cumbersome and labor-intensive, often requiring large sledgehammers and prying wedges, and is complicated by the forces generated during milling operations that can tightly secure the bit holders.
Innovation Solution
A tooling system comprising a bracket, a pry tool, and an actuation member is used to remove bit holders from base blocks. The bracket is engaged with the bit holder, and the pry tool is positioned between the bit holder and the base block. The actuation member is used to exert a pushing action on the pry tool, and impacts on the bracket's impact surface transfer force to the pry tool, aiding in the removal of the bit holder.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional removal methods using large sledgehammers and prying wedges are used, then the bit holder can be removed from the base block, but the process becomes labor-intensive and time-consuming
Solution Approach 1:
The patent introduces a specialized removal tool as an intermediary device between the operator and the bit holder. This tool includes a pry wedge positioned between the bit holder and base block, combined with an actuation mechanism that applies controlled force. The intermediary tool translates operator input into effective removal force, making the process easier and faster than direct use of sledgehammers.
Solution Approach 2:
The patent replaces the traditional mechanical system of sledgehammers and manual prying with a more sophisticated actuation mechanism. This mechanism may include mechanical advantage elements such as levers, screws, or hydraulic/pneumatic components that amplify operator input force, reducing the physical effort and time required for removal.
2Productivity
If large sledgehammers are used to remove bit holders, then removal is achieved, but excessive force is required making the process cumbersome
Solution Approach 1:
The patent substitutes the brute-force mechanical system of sledgehammers with a controlled actuation mechanism that uses mechanical advantage. This system may incorporate levers, threaded rods, or fluid power elements that multiply applied force efficiently, achieving the same removal effect with fraction of the input force required by traditional methods.
Solution Approach 2:
The patent changes the force application parameters from impulsive, high-magnitude strikes to controlled, sustained force application. The actuation mechanism allows for gradual force increase and precise control, optimizing the force profile for removal while minimizing peak force requirements and overall operator effort.
3Reliability
If bit holders are tightly forced into base blocks during milling operations, then secure attachment is achieved, but removal becomes difficult and labor intensive
Solution Approach 1:
The patent employs different mechanical approaches for attachment versus removal. During installation, direct force drives the bit holder into the base block for secure attachment. For removal, the actuation mechanism applies force in the opposite direction through a pry wedge, dynamically adapting the force application method to the specific operation while maintaining reliability of attachment during milling.
Solution Approach 2:
The patent introduces a specialized removal tool as an intermediary device between the operator and the bit holder. This tool includes a pry wedge positioned between the bit holder and base block, combined with an actuation mechanism that applies controlled force. The intermediary tool translates operator input into effective removal force, making the process easier and faster than direct use of sledgehammers.
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 tooling system significantly reduces the labor and effort required to remove bit holders, making the process more efficient and operator-friendly compared to traditional methods that rely on large sledgehammers.
Implementation Method 1
The actuation member is actuatable to contact and exert a pushing action on the pry tool to move and advance the portion of the pry tool into an interface defined between the bit holder and the base block
Implementation Method 2
When the impact surface receives the impacts, impact components are correspondingly transferred to the pry tool to supplement the pushing action for a removal of the bit holder from the base block
Data Source
AI summary
A tooling for removing a bit holder from a base block of a milling drum. The tooling includes a bracket, a pry tool, and an actuation member. The bracket is configured to be engaged with the bit holder and defines an impact surface to receive one or more impacts. The pry tool has a portion configured to be positioned between the bit holder and the base block. The actuation member is movably engaged with the bracket and is actuatable to contact and exert a pushing action on the pry tool to move and advance the portion of the pry tool into an interface defined between the bit holder and the base block. When the impact surface receives the impacts, impact components are correspondingly transferred to the pry tool to supplement the pushing action for a removal of the bit holder from the base block.