Modular Carrier Tool Radial Clamping Force Retention
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Solution Overview
Problem
The existing modular carrier tools face a decrease in clamping force over their service life due to reduced elasticity of the clamping webs, leading to inadequate retention of the tool head, which compromises safety and performance.
Innovation Solution
The tool head and carrier components are designed with radially tilted underhead bearing surfaces and bearing surfaces, creating a radial force component that enhances clamping power and automatic centering, along with a fastening pin for precise alignment and a conical shell segment configuration for improved torque transmission and pull-out protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If freely protruding clamping webs are used to clamp the tool head, then the tool head can be easily inserted and exchanged, but the clamping force decreases over service life due to reduced elasticity
Solution Approach 1:
The patent tilts the bearing surfaces by angle α relative to the perpendicular of the carrier's end face. This geometric parameter change creates a radial force component that actively presses the clamping webs against the tool head, compensating for elasticity loss and maintaining reliable clamping force throughout the service life while preserving easy tool head exchangeability
2Force
If clamping webs are pressed against the tool head in axial direction, then initial clamping force is achieved, but misalignment and improper seating occur
Solution Approach 1:
The patent introduces asymmetric tilting of the bearing surfaces at angle α relative to the perpendicular axis. This asymmetric geometry generates a radial force component that automatically centers the tool head during insertion, ensuring precise alignment and proper seating while maintaining the necessary clamping force
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
This design ensures a more secure and long-lasting seating of the tool head, maintaining high clamping power and preventing tool head misalignment, thereby extending the service life and ensuring reliable operation.
Implementation Method 1
the underhead bearing surfaces as well as the bearing surfaces are tilted by a tilt angle α in radial direction relative to the central longitudinal axis, so that a force component is exerted in radial direction onto the clamping webs in a mounted state
Implementation Method 2
the elasticity of the freely protruding clamping webs decreases and with that the clamping force exerted unto the tool head weakens
Data Source
AI summary
The modular carrier tool (2), in particular drilling tool, extends along a central longitudinal axis (4) in axial direction (6) and comprises a carrier (8) as well as a tool head (10) that can be reversibly mounted on the front-end of the carrier (8). The carrier (8) has a head retainer (14) for the insertion of the tool head (10) as well as clamping webs (24), which radially delimit the head retainer (14) and also have bearing surfaces (28). The tool head (10) comprises clamping surfaces (35) extending in axial direction as well as underhead bearing surfaces (34). In a mounted state the clamping webs (24) clamp the tool head (10) in radial direction to the clamping surfaces (35) and the underhead bearing surfaces (34) are pressed against the bearing surfaces (28). In order to generate a force component (K) acting in radial direction unto the clamping webs (24), the bearing surfaces (28) as well as the underhead bearing surfaces (34) are tilted in radial direction towards the central longitudinal axis (4) by a tilt angle α. This particularly supports the radially exerted clamping force of the elastic clamping webs (24).