Attachment Connector Geometry for Rigid Tool Coupling
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Solution Overview
Problem
Machine tools in the metal parts processing industry face challenges in achieving high rigidity and stability in the connection between the mandrel and processing tools, while allowing for effective chip removal and handling high force torsion components, with existing solutions being costly and requiring complex grinding processes.
Innovation Solution
A high-rigidity attachment connector member with a cylindrical central body and engaging portions of varying configurations, including truncated cones and notches, that can be easily interchanged with different tools, featuring hollow holes for coolant passage and secure fastening, made from materials like steel or aluminum alloys.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional attachment connector members are used to ensure high rigidity and stability, then connection strength is improved, but manufacturing complexity and costs increase due to requiring complex grinding processes
Solution Approach 1:
The connector member is divided into distinct functional zones: a central body portion and peripheral engaging portions with specific geometries. The engaging portions feature standardized profiles (truncated cones, trigonal configurations) that can be manufactured through simpler processes while the central body maintains structural integrity. This segmentation allows different parts to be optimized for their specific functions with appropriate manufacturing methods.
Solution Approach 2:
The connector member incorporates multiple engaging portions with different standardized configurations (upper engaging portion with truncated cone trigonal configuration, lower engaging portion with corresponding geometry) that can interface with various tool types. This multi-functionality allows a single connector design to serve multiple tooling applications while maintaining high rigidity through the standardized interface geometries.
2Manufacturing precision
If complex grinding processes are used to manufacture the connector member, then connection precision is improved, but production costs increase
Solution Approach 1:
The connector member is designed with pre-configured engaging portions that have standardized geometries (truncated cones, trigonal configurations) built into the base material or formed through preliminary shaping processes. This preliminary configuration of the engaging portions with precise standard geometries eliminates the need for complex final grinding operations, as the critical interface dimensions are established during material formation rather than through subsequent expensive grinding processes.
3Stability of the object's composition
If the connector member design is optimized for high rigidity, then stability is improved, but adaptability to different tool types decreases
Solution Approach 1:
The connector member employs asymmetric engaging portion configurations where the upper engaging portion has a specific truncated cone trigonal configuration that differs from the lower engaging portion geometry. This asymmetric design with standardized profiles allows the connector to maintain structural stability while providing complementary fitting interfaces for different tool types, enabling tool interchangeability through standardized asymmetric interfaces.
Solution Approach 2:
The connector member incorporates multiple engaging portions with different standardized configurations that can interface with various tool types. The upper engaging portion with truncated cone trigonal configuration and the lower engaging portion with corresponding geometry create a universal interface system that maintains connector stability while adapting to different tool geometries through standardized multi-functional interfaces.
4Ease of manufacture
If the connector member structure is simplified to reduce costs, then ease of manufacture is improved, but chip removal capability and torsion handling deteriorate
Solution Approach 1:
The connector member applies local quality optimization where the central body maintains simplified geometry for easy manufacture, while the peripheral engaging portions feature specific localized geometries (truncated cones, trigonal configurations) that provide the necessary mechanical interlocking for chip removal and torsion handling. This localized application of complex geometry only where needed maintains manufacturing simplicity overall while ensuring reliability in critical functional areas.
Data Source
AI summary
Attachment connector member (E), especially for the connection of operating parts (B, M, U) of a machine tool (MO), including a cylindric central body (1), from each other opposite bands in relation to said central body (1), a first portion (3) and a second portion (4) branching there-off; the said second portion (4) including a first surface (6a) exhibiting a trigonal truncated cone configuration (116) and a second end surface (6b) with a cylindric configuration (117).