Damped Tool Body Structure for Torque Drive and Lower Transverse Load
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing tool bodies for cutting tools, such as those described in EP 3300820 A1, are unfavorably loaded during machining, leading to reduced service life due to transverse loads that often result in component failure, as shear strength is typically less than tensile strength.
Innovation Solution
A tool body design featuring a housing with a peripheral wall that surrounds the interior and extends axially, incorporating a damping device and a driver element connected in a torque-locking manner to reduce transverse loads, with a damping mass and a connecting element to enhance torsional rigidity and vibration damping, and a fastening system to secure components without additional lateral force loading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a torque connection between driver element and blade carrier is implemented, then rotational drive is achieved, but transverse loads occur on areas outside the driver element and peripheral wall leading to component failure
Solution Approach 1:
The driver element is segmented into multiple sections distributed around the periphery, with each section independently connected to the peripheral wall. This segmentation distributes the torque transmission load across multiple discrete connection points rather than concentrating it in a single location, reducing the transverse load on any single area of the peripheral wall and driver element assembly.
2Stability of the object's composition
If the peripheral wall is designed to be closed all the way around for torsional rigidity, then torsional rigidity is improved, but device complexity increases
Solution Approach 1:
The peripheral wall is designed with locally reinforced sections at the driver element connection points rather than being uniformly thick throughout. This allows the wall to provide sufficient torsional rigidity where needed (at the torque transmission locations) while maintaining a simpler, lighter overall structure in non-critical areas, optimizing the balance between rigidity and complexity.
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 design extends the service life of the tool body by minimizing transverse loads and providing effective vibration damping, particularly suitable for milling tools where large transverse loads and chatter vibrations are common, resulting in a more robust and cost-effective solution.
Implementation Method 1
a damping device for vibration damping of the housing (1) and arranged at least in sections within the interior space
Implementation Method 2
the driver element (4) being connected to the peripheral wall (3) in a torque-locking manner
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Tool body (100) for a cutting tool (200), wherein the tool body (100) has a housing (1) and a damping device (2), wherein the housing (1) has a circumferential wall (3), wherein the damping device (2) is designed and arranged for vibration damping of the housing (1), wherein the tool body (100) further comprises a drive element (4) for rotational drive of a cutting tool holder (300) with respect to the axis of rotation (101), wherein the drive element (4) is arranged at least partially within the circumferential wall (3) in the direction of view parallel to the axis of rotation (101), is torque-locked to the circumferential wall (3) and projects axially from an end face (5) of the circumferential wall (3) with respect to the axis of rotation (101).