Induction Heating Coil Shielding for Shrink Tool Holder Expansion
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Solution Overview
Problem
Existing induction heating devices for shrink-clamping and unshrink-unclamping of tools face challenges in efficiently heating the tool holder while preventing the tool from heating up, leading to ineffective thermal expansion and potential tool damage.
Innovation Solution
The induction heating device incorporates a magnetic flux conducting unit with movable magnetic flux conducting elements that have predetermined movement paths oriented perpendicularly to the radial and axial directions of the receiving region, allowing for effective shielding of the induction magnetic field, thus heating the tool holder without heating the tool. This configuration includes a bearing unit that supports the magnetic flux conducting elements, enabling flexible adaptation to different tool shapes and sizes while maintaining a low space requirement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the induction magnetic field is applied to heat the tool holder, then the tool holder expands thermally enabling tool insertion/removal, but the tool may also heat up causing potential damage
Solution Approach 1:
The magnetic flux conducting unit is divided into multiple magnetic flux conducting elements (at least three) arranged around the receiving region. Each element independently conducts magnetic flux, creating segmented shielding zones that collectively protect the tool while allowing focused heating of the tool holder.
Solution Approach 2:
The magnetic flux conducting elements act as intermediary components between the induction coil and the tool/tool holder. These elements conduct and redirect the magnetic flux, serving as a mediator that directs energy to the tool holder while shielding the tool from excessive magnetic field exposure.
2Object-affected harmful factors
If magnetic flux conducting elements are positioned close to the tool for effective shielding, then tool protection improves, but the risk of damaging the elements or tool through contact increases
Solution Approach 1:
The magnetic flux conducting elements are designed to be movable relative to the tool holder, with predetermined movement paths that keep them in close proximity for effective shielding while preventing contact. The bearing unit enables dynamic adjustment of element positions to adapt to different tool sizes and shapes.
Solution Approach 2:
The magnetic flux conducting elements are configured as thin, flexible components that can closely follow the contours of the tool holder and tool without making rigid contact. This flexibility allows effective shielding positioning while minimizing damage risk.
3Adaptability or versatility
If the magnetic flux conducting unit is designed to accommodate different tool shapes and sizes, then adaptability improves, but the device complexity increases
Solution Approach 1:
The magnetic flux conducting elements are designed with universal functionality to accommodate various tool shapes and sizes. The same basic element design, when combined with movable mounting and predetermined movement paths, provides adaptability across different tool types without requiring completely different component designs.
Solution Approach 2:
The bearing unit and movable mounting mechanism provide dynamic adaptability, allowing the magnetic flux conducting elements to be repositioned for different tool configurations. This dynamic capability replaces the need for multiple fixed configurations, simplifying the overall design while maintaining versatility.
4Object-affected harmful factors
If the magnetic flux conducting elements are moved radially towards the tool, then shielding effectiveness improves, but the risk of hitting and damaging the tool or elements increases
Solution Approach 1:
Instead of pure radial movement, the elements follow predetermined movement paths that combine radial approach with tangential or axial components. This dynamic movement pattern allows the elements to approach the tool for effective shielding while the non-radial path components prevent direct contact and damage.
Solution Approach 2:
The movement paths extend into multiple dimensions rather than purely radial movement. By adding tangential or axial movement components to the radial approach, the elements can achieve close proximity for shielding while using the additional dimensional space to avoid contact with the tool.
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 ensures effective thermal expansion of the tool holder while preventing the tool from heating up, reducing the risk of damage and allowing for quick and efficient tool insertion and removal, with a high degree of flexibility and energy savings.
Implementation Method 1
an induction coil and is configured, in a shrink-clamping and/or unshrink-unclamping process, to heat-expand at least a portion of a tool holder
Implementation Method 2
heat-expand at least a portion of a tool holder
Implementation Method 3
at least one magnetic flux conducting unit comprising at least one magnetic flux conducting element for a conduction of a magnetic flux generated by the induction coil
Data Source
AI summary
An induction heating device for a shrink-clamping and/or unshrink-unclamping of tools into and/or out of a tool holder, includes: an induction heating unit comprising one induction coil configured, in a shrink-clamping and/or unshrink-unclamping process, to heat-expand a portion of a tool holder arranged in a receiving region of the induction heating unit; a magnetic flux conducting unit comprising one magnetic flux conducting element for conduction of magnetic flux generated by the induction coil; and a bearing unit configured for a movable support of the magnetic flux conducting element, wherein a large portion of all points of the magnetic flux conducting element each have a respective movement path predetermined partially by the bearing unit, wherein each of the movement paths has an essential movement component oriented perpendicularly to a radial direction of the receiving region and at the same time perpendicularly to an axial direction of the receiving region.