Hydraulic Joining Tool With Removable Nose for Threaded Inserts
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Solution Overview
Problem
Existing joining tools are not easily adaptable to deformable elements of different sizes or geometries, and they lack flexibility in accommodating various types of inserts, particularly those with threaded shafts, which limits their versatility and reliability in securing stable connections.
Innovation Solution
A battery-powered joining tool with a hydraulic system and a removable nose piece, featuring a threaded dowel and a contact sensor, allows for easy adaptation to different sizes and geometries of deformable elements, ensuring reliable and stable setting through a combination of rotational and axial movements, and includes a calibration adjustment screw for precise pressure control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed design joining tool is used, then the tool structure is simple, but the adaptability to different deformable elements is poor
Solution Approach 1:
The joining tool is divided into modular components including a removable nose piece, interchangeable threaded dowels, and separate hydraulic system. This segmentation allows different nose pieces and dowels to be exchanged to accommodate various deformable element geometries and sizes, improving adaptability without requiring complete tool redesign.
Solution Approach 2:
The tool is designed with universal features including a standardized mounting interface for different nose pieces, a adjustable threaded dowel system that can accommodate various shaft diameters, and a hydraulic system that can be calibrated for different deformation forces. This enables a single tool to perform multiple joining operations on different deformable element types.
2Adaptability or versatility
If a removable nose piece design is used, then the adaptability to different geometries is improved, but the device complexity increases
Solution Approach 1:
The nose piece is designed to nest within the tool housing, with threaded dowels that can be inserted into and secured by the nose piece structure. This nested arrangement allows compact storage of interchangeable components and simplifies the attachment/detachment process, reducing the operational complexity despite the modular design.
3Manufacturing precision
If a hydraulic system with multiple components is used, then the joining precision is improved, but the ease of operation is reduced
Solution Approach 1:
The hydraulic pump, control valve, and pressure regulation system are integrated into a single compact hydraulic unit mounted on the tool housing. The calibration adjustment screw directly controls the hydraulic pressure without requiring separate adjustment mechanisms. This merging of functions into unified components maintains precise hydraulic control while simplifying the operator interface and reducing the number of separate controls.
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 tool provides a versatile and reliable method for securing deformable elements to workpieces, ensuring efficient and stable connections by adapting to various sizes and geometries, reducing effort in the joining process, and allowing easy removal of stuck elements without damage.
Implementation Method 1
a second drive train comprising a hydraulic system (56) adapted for determining a plastic deformation of a predetermined portion of the deformable element
Implementation Method 2
The pump of the second drive train is drivable by the motor to deliver fluid pressure to the piston chamber
Implementation Method 3
an electrical motor (44) energizable by the electrical battery (B)
Implementation Method 4
a threaded dowel (40) adapted to receive a threaded shaft (34) and being rotatably movable around a longitudinal axis (X-X)
Data Source
AI summary
A power tool for joining a deformable element having a threaded shaft to a workpiece. The joining tool comprising a threaded dowel adapted to receive the threaded shaft and rotatably within the housing. A nose is arranged around the threaded dowel, and the dowel is slidably movable relative to the nose. A motor drives a drive train to rotate the threaded dowel. A hydraulic system drives another drive train to move the threaded shaft and compress the deformable element. The joining tool includes a sliding unit. The nose is attachable to the sliding unit, and in an attached position the nose is slidably connected to the housing so that the hydraulic system may move the nose axially to compress the deformable element.