Tool Receiving Device Axial Fixation Compact Design
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Solution Overview
Problem
Existing tool receiving devices for portable machine tools, such as angle grinders, lack a compact and cost-effective design that allows for easy tool changes and secure tool fixation without wear during braking operations.
Innovation Solution
The proposed tool receiving device incorporates a receiving unit with a driver element and a mounting element that are rotatably connected via a retaining unit, featuring a screw connection for axial fixation. This design enables a compact, X-lock principle-based tool receiving system with reduced axial displacement and secure tool clamping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a traditional tool receiving device is used, then tool fixation is achieved, but the device lacks compact design and requires complex structures
Solution Approach 1:
The tool receiving device is divided into distinct functional segments: a driver element with protrusion stop elements, a mounting element with wing elements, and a retaining unit with retaining elements. Each segment performs a specific function, allowing for compact integration while maintaining ease of tool changes and secure fixation.
Solution Approach 2:
The driver element and mounting element are nested within the retaining unit structure, with the mounting element rotatably connected to the driver element. This nested arrangement minimizes the overall axial height while maintaining all necessary functional components for tool clamping and fixation.
2Productivity
If traditional tool receiving devices are used, then tool fixation is achieved, but tool changes require time and complexity
Solution Approach 1:
The mounting element is designed to be rotatable relative to the driver element, enabling dynamic adjustment during tool changes. The wing elements can be rotated into position to engage with the protrusion stop elements, allowing quick tool replacement without complex manipulation or multiple steps.
Solution Approach 2:
The retaining elements with screw connections provide self-contained fixation functionality. The system is designed to be self-sufficient for tool clamping and release operations, requiring no external tools or complex mechanisms, thereby reducing tool change time and improving productivity.
3Reliability
If traditional tool receiving devices are used, then tool fixation is achieved, but wear during braking operations occurs
Solution Approach 1:
The wing elements and protrusion stop elements are designed with curved or rounded contact surfaces that distribute pressure evenly during braking operations. This curved geometry reduces stress concentration and prevents wear at specific points, enhancing the reliability of tool fixation during high-stress braking maneuvers.
Solution Approach 2:
The driver element and mounting element can be constructed from composite materials or hardened surfaces that resist wear during braking operations. This material selection maintains secure tool fixation while preventing the harmful wear that occurs in traditional devices during high-stress braking.
4Volume of moving object
If a compact design is implemented, then device size is reduced, but manufacturing complexity may increase
Solution Approach 1:
The device is segmented into modular components (driver element, mounting element, retaining unit) that can be manufactured separately using standard machining processes and then assembled. This segmentation simplifies manufacturing by allowing each component to be optimized independently while achieving a compact overall design.
Solution Approach 2:
The retaining elements with screw connections serve multiple functions: axial fixation, rotational support, and tool clamping. This multi-functionality reduces the number of separate components needed, simplifying manufacturing while maintaining a compact construction diameter.
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 achieves a compact tool receiving device with a small design height and construction diameter, enabling quick and tool-free tool changes while ensuring secure tool fixation and preventing wear during braking operations, thus enhancing operational efficiency and cost-effectiveness.
Implementation Method 1
the retaining unit comprises at least one retaining element configured to be connected to the output unit by means of a screw
Implementation Method 2
the at least one driver element and the at least one mounting element are configured to clamp the at least one tool means by way of an axial displacement of the at least one mounting element with respect to the at least one driver element
Data Source
AI summary
A tool receiving device for an arrangement of at least one tool mechanism, in particular of at least one tool disc, on a portable machine tool, in particular on an angle grinder is disclosed. The tool receiving device has (i) at least one receiving unit on which the at least one tool mechanism can be fixed, and (ii) at least one retaining unit particularly rotatably supported on the receiving unit for at least axially fixing the receiving unit, in particular the tool mechanism, on an output unit. The receiving unit includes at least one driver element and at least one mounting element which are rotatably connectable to each other by the retaining unit. The retaining unit includes at least one retaining element which is configured for a screw connection to the output unit.