Modular Screw-Drive Hand Tool for Fast Interchangeable Force Tasks
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Solution Overview
Problem
Existing hand-held pulling and pushing devices are limited by their design, particularly the screw drive and drive unit, restricting their versatility and ability to handle various operations requiring different levels of force.
Innovation Solution
A modular hand-held device with a tool unit, screw drive, and battery-operated electric motor, featuring a coupling system that allows easy connection and exchange of tool units, enabling both tensile and compressive force transmission, and a quick coupling mechanism for convenient tool changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed design of screw drive and drive unit is used, then the device structure is simple, but the application possibilities are limited
Solution Approach 1:
The device is divided into separate modular components: a drive unit with screw drive and interchangeable tool units. This segmentation allows different tool units to be attached to the same drive unit, increasing application possibilities without requiring complete device redesign for each application.
Solution Approach 2:
The drive unit with standardized coupling is designed to be universally compatible with multiple different tool units. This multi-functionality allows a single drive unit to perform various operations (pulling, pressing, riveting) by simply changing the tool unit, thereby increasing adaptability without proportionally increasing overall device complexity.
2Adaptability or versatility
If multiple specialized devices are used for different work processes, then each device can be optimized for its specific task, but the overall system complexity and number of devices increase
Solution Approach 1:
A single drive unit is designed with universal coupling that can accommodate multiple specialized tool units for different work processes (pulling tools, pressing tools, riveting tools). This allows one drive unit to replace multiple specialized devices, reducing system complexity while maintaining work process coverage.
Solution Approach 2:
The system is segmented into a common drive unit and interchangeable specialized tool units. This segmentation allows each tool unit to be optimized for its specific task while sharing the common drive mechanism, thereby reducing the total number of devices needed compared to having separate complete devices for each function.
3Adaptability or versatility
If tools are exchanged frequently, then adaptability to different tasks is improved, but maintenance time and operational interruption increase
Solution Approach 1:
Tool units are pre-configured with standardized coupling interfaces that match the drive unit. This preliminary design of standardized connections enables quick attachment and detachment without requiring complex alignment or adjustment procedures, thereby reducing tool exchange time while maintaining adaptability.
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
Enables flexible and efficient operation for diverse tasks by allowing interchangeable tool units and reliable force transmission, enhancing usability and reducing maintenance time in applications like motor vehicle workshops.
Implementation Method 1
a battery-operated electric motor (11) for driving the threaded spindle (4)
Implementation Method 2
The screw drive converts a rotary movement of the electric motor into a linear movement of the pulling or pressing tool
Implementation Method 3
The electric motor and the battery (21) for operating the electric motor (11) are preferably arranged in a base body
Data Source
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AI summary
The invention relates to a handheld pulling and pushing device for driving interchangeable tools. To provide a handheld pulling and pushing device that is easy and flexible to use for different operations, the device comprises a tool unit with a threaded drive and a tool holder. The threaded drive has a threaded spindle rotatably mounted on a housing body and a threaded nut rotatably mounted on the threaded spindle and fixed against rotation to the housing body via a bearing unit. Furthermore, the pulling and pushing device includes a drive unit with a battery-powered electric motor for driving the threaded spindle, which can be connected to the tool unit via a coupling.