Tool Holder Locking Structure for Stable Nut Fastening
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Solution Overview
Problem
Conventional tool holder locking devices fail to stably engage and hold tool holders due to weak engagement between positioning members and notches, leading to slippage during nut fastening or detaching.
Innovation Solution
The tool holder locking device features a horizontal support with a U-shaped holding cavity and engaging rib that corresponds to the gripper groove, and a vertical support with a positioning block that engages with the driving grooves, providing multiple engagement points to securely hold the tool holders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the positioning member engages with the positioning notch in the annular surface of the tool holder, then the tool holder orientation can be confirmed, but the engagement is not strong enough and the tool holder easily slips during nut operations
Solution Approach 1:
The positioning member is divided into two distinct engagement features: a first positioning member that engages with the positioning notch for orientation confirmation, and a second positioning member that engages with the driving groove for strong mechanical retention. This segmentation allows each component to specialize in one function, with the second positioning member providing the additional strength needed to prevent slippage during nut operations.
2Device complexity
If a single positioning member is used to engage with the positioning notch, then the device structure remains simple, but the tool holder is not stably held and easily slips during operations
Solution Approach 1:
The positioning member is segmented into two distinct components: a first positioning member for orientation confirmation and a second positioning member for strong mechanical engagement. This segmentation enables the system to achieve stable holding without significantly increasing overall structural complexity, as both members are integrated into the same support blocks.
Solution Approach 2:
The support blocks serve multiple functions: they provide structural support, house the positioning members for orientation confirmation, and contain the engaging ribs that engage with the gripper groove for strong mechanical retention. This multi-functionality allows the device to achieve reliable holding stability without adding separate dedicated components for each function.
3Stability of the object's composition
If the positioning member engages with the positioning notch, then rotation during nut operations is prevented, but longitudinal movement and slippage still occur
Solution Approach 1:
The positioning system is segmented into two functional components: the first positioning member that engages with the positioning notch to prevent rotation, and the second positioning member that engages with the driving groove to prevent longitudinal movement and slippage. This segmentation allows each component to address a specific stability issue without interfering with the other's function.
Solution Approach 2:
The engaging rib acts as an intermediary element between the support block and the tool holder's gripper groove. This intermediary structure provides the additional mechanical engagement needed to prevent longitudinal slippage while maintaining the rotational stability provided by the first positioning member's engagement with the positioning notch.
Data Source
AI summary
A tool holder locking device has a base, a horizontal support mounted on the base to hold a first tool holder, and a vertical support mounted on the base to vertically hold a second tool holder. The horizontal support has a supporting block having a holding cavity and an engaging rib radially protruding from the holding cavity to engage with a gripper groove of the first tool holder, a first positioning member fixed on the supporting block to engage with a positioning notch of the first tool holder, and a second member fixed on the supporting block to engage with an orientation notch of the first tool holder. The vertical support has a supporting sleeve and a positioning block mounted on a bottom of the supporting sleeve and extending along a radial direction of the supporting sleeve to engage with two driving grooves of the second tool holder.