Dual Tool Holder Screw Drive for Hand-Held Pulling and Pressing
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Solution Overview
Problem
Existing hand-held pulling and compressing devices have limited connection and/or drive options for interchangeable tools, making them less flexible and reliable for driving a wide range of tools required for various applications.
Innovation Solution
A hand-held pulling and compressing device with a screw drive that transmits rotational movements of the threaded spindle to both a first tool holder for interchangeable tools and a second tool holder, allowing for both tensile and compressive forces to be reliably transmitted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single tool holder is used for interchangeable tools, then the device structure remains simple, but the connection and drive options for different tools are limited
Solution Approach 1:
The tool holder system is segmented into two independent holders: a first tool holder connected to the threaded nut for linear motion tools, and a second tool holder connected to the threaded spindle for rotational motion tools. This segmentation allows each holder to be optimized for its specific function while expanding the overall versatility of the device without requiring a single complex universal interface.
Solution Approach 2:
The device achieves multi-functionality by enabling both pulling and pressing operations through the first tool holder, and rotational operations through the second tool holder. The screw drive mechanism itself serves multiple purposes: it provides both linear motion (through the nut) and rotational motion (through the spindle), allowing a single device to perform diverse tasks requiring different types of tool actuation.
2Adaptability or versatility
If the screw drive only transmits linear motion through the threaded nut, then the coupling unit design is simple, but rotational work cannot be performed
Solution Approach 1:
The screw drive system dynamically adapts its motion transmission mode based on the tool required. When a pulling or pressing tool is installed, the threaded nut transmits linear motion. When a rotational tool is installed, the threaded spindle directly transmits rotational motion. This dynamic capability allows the device to switch between different operational modes without mechanical reconfiguration.
Solution Approach 2:
The second tool holder acts as an intermediary between the threaded spindle and rotational tools. It receives rotational motion from the spindle and transmits it to the appropriate tool, enabling rotational work while maintaining the integrity of the screw drive mechanism. The holder serves as a mediator that adapts the spindle's rotation to the specific requirements of different rotational tools.
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 device enables flexible and reliable operation of different interchangeable tools, allowing for both pulling and pressing work, as well as rotational work, thereby enhancing its applicability in various tasks such as vehicle bodywork and maintenance.
Implementation Method 1
a screw drive with a threaded spindle connected to the electric motor and mounted rotatably on a housing body and a threaded nut mounted rotatably on the threaded spindle
Data Source
AI summary
The invention relates to a hand-held pulling and compressing device for driving interchangeable tools, witha drive unit with a battery operated electric motor,a screw drive with a threaded spindle connected to the electric motor and mounted rotatably on a housing body and a threaded nut mounted rotatably on the threaded spindle and non-rotatably on the housing body via a bearing unit, anda coupling unit connected to a first tool holder for transmitting tensile and compressive forces resulting from the direction of rotation of the threaded spindle from the threaded nut to the first tool holder.In order to provide a hand-held pulling and compressing device that is reliably and flexibly suitable for driving interchangeable tools, it is provided that the screw drive is designed to transmit rotational movements of the threaded spindle to a second tool holder.