Tool-Free Die Half Assembly for Rotatable Crimping Pliers
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Solution Overview
Problem
Existing crimping pliers face challenges in the assembly and disassembly of die half units, requiring tools and complex mechanisms, which limits their versatility and reliability in accommodating different workpieces and die contours.
Innovation Solution
The crimping pliers feature a die half unit with a bearing body supported on a pliers jaw, allowing for a releasable assembly and disassembly without tools, and a rotational bearing for orientation adjustment, enabling easy exchange of die half units and accommodating various crimping orientations through a latching or locking device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional assembly methods are used for die half units, then connection reliability is improved, but assembly complexity and tool requirements increase
Solution Approach 1:
The die assembly is segmented into modular die half units that can be independently assembled and disassembled. Each die half unit comprises a die half and an associated bearing body that can be attached to pliers jaws separately, enabling simplified tool-free assembly while maintaining reliable connections through standardized interfaces
Solution Approach 2:
The die half is nested within the bearing body structure, where the bearing body serves as a carrier that holds the die half in a specific orientation. This nested arrangement allows the die half to be securely positioned within the bearing body's die half accommodation, ensuring reliable connection while simplifying the overall assembly process
2Manufacturing precision
If fixed die orientation is used, then manufacturing precision is improved, but adaptability to different workpieces decreases
Solution Approach 1:
The die half unit incorporates a rotational bearing that enables dynamic adjustment of the die half's rotational position relative to the bearing body. This allows the die orientation to be changed according to different workpiece requirements while maintaining precise crimping through the bearing's controlled rotation mechanism
Solution Approach 2:
The bearing body is designed with universal features including a rotational bearing and standardized interface, allowing the same bearing body to accommodate different die halves for various crimping applications. This multi-functional design enables a single tool to handle multiple workpiece types and orientations
3Ease of operation
If tool-free assembly is implemented, then ease of operation is improved, but connection reliability may worsen
Solution Approach 1:
The die half unit employs self-latching features where the die half automatically secures itself within the bearing body through complementary geometric interfaces. The bearing body's die half accommodation is designed to automatically engage and retain the die half without requiring external tools, ensuring both ease of operation and reliable connection
Solution Approach 2:
The interface between the die half and bearing body uses asymmetric geometric features including shaped engagement surfaces and positioning elements that provide directional insertion and automatic latching. This asymmetric design ensures proper orientation during assembly while creating a secure, tool-free connection that maintains high reliability
Data Source
AI summary
The invention relates to crimping pliers wherein a die comprises two die half units. The die half units each comprise a die half and a bearing body. The bearing body is supported in an associated bearing accommodation of a pliers jaw. The die halves are supported by a rotational bearing for being rotated about a crimping axis relative to the bearing body.According to the invention it is possible to assemble and disassemble the bearing body of the die half unit to and from the bearing accommodation of the pliers jaw without the use of any tool. It is also possible that a latching or locking device is used for the assembly.