Handheld Abrading Machine Tool Head Articulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Handheld abrading machines face challenges in stability and user comfort due to disturbing forces caused by rigid connections and bending of transmission shafts and casings during pivotal movements, leading to reduced lifespan and impaired handling.
Innovation Solution
The handheld abrading machine features a moving device that allows the tool head to pivot and vary its distance from the holding device via a combination of rotating and displacing mechanisms, including a freewheel coupling and multi-articulated linkage, to minimize disturbing forces and enhance stability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the tool head is rigidly connected to the holding device, then power transmission is effective, but disturbing forces increase and stability decreases
Solution Approach 1:
The patent changes the connection parameter from rigid to articulated, allowing the tool head to pivot about one or more pivotal axes. This enables the system to maintain power transmission while adapting to disturbing forces, thereby improving stability without sacrificing effectiveness.
Solution Approach 2:
The patent introduces dynamic movement capability by allowing the tool head to pivot relative to the holding device. This dynamic adjustment enables the system to respond to disturbing forces during operation, maintaining both power transmission and stability simultaneously.
2Device complexity
If the tool head is rigidly connected, then structural simplicity is maintained, but handling comfort deteriorates
Solution Approach 1:
The articulated connection with pivotal movement adds minimal complexity while dramatically improving handling comfort. The tool head can naturally follow surface contours and adjust to user movements, making the device easier to operate despite the added mechanical complexity.
3Adaptability or versatility
If the transmission shaft bends during pivotal movement, then flexibility is achieved, but component lifespan decreases
Solution Approach 1:
The patent segments the transmission system into modular components (holding device, articulated connection, tool head) that can move independently. This segmentation allows flexibility at the connection point while protecting the main transmission shaft from excessive bending, thereby extending component lifespan.
4Device complexity
If the tool head distance is fixed, then structural simplicity is maintained, but adaptability to different working conditions decreases
Solution Approach 1:
The patent makes the tool head distance variable through pivotal movement about one or more axes. This dynamic adjustment capability allows the tool head to reach different positions and angles, adapting to various working conditions while maintaining relatively simple structural implementation.
Data Source
AI summary
In order to provide a handheld abrading machine which is of robust construction and is easy and comfortable to handle, it is proposed that the handheld abrading machine comprise a holding device for holding the abrading machine, a drive motor and a tool head, wherein the tool head is arranged on the holding device such as to be moveable by means of a moving device, wherein the tool head is pivotal relative to the holding device about one or more pivotal axes by means of the moving device and wherein a distance of the tool head from the holding device is variable by means of the moving device.