Angle Head Holder Collet Release Using Ball-Groove Threaded Rod
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Solution Overview
Problem
Conventional angle head holders for machining tools are inconvenient to detach the collet, which can lead to damage during the detachment process due to the need for manual knocking, causing potential breakage over time.
Innovation Solution
The angle head holder incorporates a threaded rod with annular grooves and balls, allowing for a threaded connection with the collet, enabling easy detachment by rotating the threaded rod, thereby reducing the risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the fastener is driven to rotate and move backwardly to loosen the threaded connection, then the threaded connection can be loosened, but the collet remains in the cutter spindle and requires knocking to detach
Solution Approach 1:
The patent introduces a knocking rod that can be inserted into the cutter spindle before detachment is needed. This knocking rod preliminarily positions the collet by knocking it backward, so that when the fastener is loosened, the collet is already in a position ready for easy removal without requiring additional knocking that could cause damage.
Solution Approach 2:
The knocking rod acts as an intermediary tool between the operator and the collet. Instead of directly knocking the collet (which could cause damage), the knocking rod mediates the force application, providing controlled positioning that facilitates safe and easy collet removal.
2Ease of operation
If knocking is applied to the rear of the collet to push it out, then the collet can be removed, but the rear of collet may be broken easily after long-term knocking
Solution Approach 1:
The knocking rod performs a preliminary knocking action to position the collet backward in the cutter spindle before the fastener is completely loosened. This preliminary positioning reduces or eliminates the need for repeated knocking after detachment begins, thereby preventing damage from long-term knocking and improving collet durability.
Solution Approach 2:
The knocking rod is integrated into the cutter spindle structure, allowing the spindle itself to provide the positioning function. This self-service approach eliminates the need for external knocking tools and reduces the risk of operator error that could lead to collet damage.
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
Facilitates convenient and safe detachment of the collet from the cutter spindle, minimizing the risk of damage and improving the overall usability of the angle head holder.
Implementation Method 1
The balls are mounted in and arranged in the ball groove
Data Source
AI summary
An angle head holder has a steering assembly and a holder assembly rotatably mounted in the steering assembly. The holder assembly has a cutter spindle, a threaded rod, multiple balls, and a collet. The cutter spindle has a central hole and a first annular groove radially formed in the central hole at a position near a rear end of the cutter spindle. The threaded rod has a second annular groove aligning with the first annular groove to form a ball groove between the threaded rod and the cutter spindle. The balls are arranged in the ball groove. The collet is inserted in the central hole of the cutter spindle from a front end of the cutter spindle and is connected to the threaded rod with threaded connection.