Adjustable Clamping Element for Non-Rotatable Shank Chisel Fixing
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Solution Overview
Problem
Existing shank chisels with rotatable fixing assemblies in chisel holders experience increased wear on both the chisel tip and holder due to friction, and are complicated to install and remove, while new hard materials allow for wear-free tips that could be secured non-rotatably for reduced wear.
Innovation Solution
An adjustable clamping element that deforms to change the securing element's outer contour, allowing simple non-rotatable securing of the shank chisel in a chisel holder, with a connecting element and receptacle design for infinite adjustability and a securing element that can be partially elastic, facilitating easy installation and minimizing wear on the holder.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a rotatable fixing assembly is used for the shank chisel in the chisel holder, then the chisel tip can rotate to achieve more uniform abrasion and extend service life, but the frictional wear on the chisel holder increases and the installation and removal become more complicated
Solution Approach 1:
The clamping element is designed to be adjustable relative to the chisel shank, allowing the securing element to be deformed from an initial state to a final state. This dynamic adjustment enables the chisel to be secured non-rotatably in the chisel holder, eliminating rotational frictional wear on the holder while maintaining secure fixation.
Solution Approach 2:
The volume of the securing element receptacle is changed by adjustment of the clamping element relative to the chisel shank. This parameter change allows the securing element to be compressed or expanded to achieve the desired degree of fixation, enabling non-rotatable securing when wear resistance is prioritized.
2Duration of action of moving object
If a rotatable fixing assembly is used for the shank chisel, then uniform abrasion of the chisel tip is achieved, but the device complexity increases in terms of installation and removal
Solution Approach 1:
The clamping element provides a simple dynamic adjustment mechanism that allows the chisel to be secured in different positions. The adjusting element can be moved relative to the chisel shank to achieve the desired fixation, providing simplicity in installation and removal while enabling non-rotatable securing for wear resistance.
3Object-affected harmful factors
If new hard materials are used for the chisel tip, then wear-free operation is achieved, but the need for rotatable fixing is eliminated and non-rotatable fixing becomes sufficient
Solution Approach 1:
The volume of the securing element receptacle is changed by adjustment of the clamping element, allowing the securing element to be compressed to achieve non-rotatable fixation. This parameter change enables simple non-rotatable securing of the chisel in the holder, which is sufficient when wear-resistant hard materials are used for the chisel tip.
4Manufacturing precision
If the clamping element is made infinitely adjustable relative to the chisel shank, then precise control of the securing element deformation is achieved, but the device complexity increases
Solution Approach 1:
The clamping element is designed with an adjusting element that can be moved relative to the chisel shank within a receptacle. This dynamic design provides sufficient adjustability for precise control of the securing element deformation while maintaining relative simplicity in the connecting element and receptacle structure.
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 solution enables safe, maintenance-optimized installation and operation of shank chisels with reduced wear on the holder and extended service life, as the chisel tip remains stable against wear, and the system can be easily assembled and disassembled without additional tools.
Implementation Method 1
a clamping element (20) is adjustable relative to the chisel shank (16) in such a manner that at least one part of the outer contour of a securing element (40) is changed, in particular, deformed
Implementation Method 2
the volume of the securing element receptacle can be changed by adjustment of the clamping element relative to the chisel shank
Data Source
AI summary
The present invention relates to a shank chisel with a chisel head and a chisel shank, wherein the chisel shank has a securing element receptacle in which a securing element is arranged. In order to be able to make simple installation of the shank chisel in a chisel holder possible in a safe and maintenance-optimized manner of operation, it is provided according to the invention that a clamping element is adjustable relative to the chisel shank in such a manner that at least one part of the outer contour of the securing element is changed. The invention furthermore relates to a corresponding fixing assembly for a shank chisel in a chisel holder.