Tool Transfer Mechanism for Machining Apparatus
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Solution Overview
Problem
Existing machining apparatus tool changers face inefficiencies in handling procedures, particularly in aligning and transferring tools between holders and a magazine, leading to complex and slow operations.
Innovation Solution
A method and apparatus featuring a 3-axis loader and a double grab transfer arm that allows for centralized computer-controlled tool transfer, enabling simple and fast movement of tools between holders and the magazine, with the double grab pivoting to align and grip tools efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional tool changer with multiple transit stations and slides is used, then tools can be transferred between magazine and tool holder, but the handling procedure becomes complex and slow
Solution Approach 1:
The tool transfer system is divided into distinct functional zones: magazine area, primary transfer position, secondary transfer positions, and tool holder area. The loader and transfer arm operate independently in these segmented zones, allowing parallel operations and reducing interference between components.
Solution Approach 2:
The double grab acts as an intermediary device between the loader and tool holder. It temporarily holds tools during transfer and can independently position tools at secondary transfer positions, simplifying the overall transfer mechanism by eliminating the need for multiple transit stations and slides.
2Ease of operation
If tools are transferred through multiple transit stations, then orientation can be adjusted, but the transfer process takes more time
Solution Approach 1:
The loader is equipped with a 3-axis mechanism that pre-orientates tools to the correct position before transfer. This preliminary orientation action eliminates the need for multiple intermediate orientation adjustments during the transfer process, reducing overall transfer time while maintaining full orientation capability.
Solution Approach 2:
The double grab can dynamically pivot and shift between different positions including primary and secondary transfer positions. This dynamic positioning allows the system to adapt tool orientation requirements on-the-fly without following a fixed multi-station path, significantly reducing transfer time.
3Device complexity
If a simple transfer mechanism is used, then the device is easier to operate, but it cannot handle tools of different orientations
Solution Approach 1:
The double grab serves multiple functions: it can grip tools at the primary transfer position, pivot to secondary transfer positions, release tools at different locations, and work independently of the loader's movements. This multi-functionality allows a single simple mechanism to handle tools of various orientations without requiring complex coordinated movements.
Solution Approach 2:
The double grab autonomously positions and orients tools during transfer without requiring precise coordination with the loader or tool holder movements. It independently manages tool orientation by pivoting to appropriate secondary transfer positions, making the overall system simpler while maintaining full adaptability to different tool orientations.
Data Source
AI summary
A machining apparatus has a frame, a magazine holding a plurality of tools, a loader capable of moving the tools between the magazine and a primary transfer position, first and second tool holders each displaceable horizontally and vertically on the frame, and a transfer arm carrying a grab. Each of the tool holders can move into and out of a respective secondary transfer position for switching a tool, one of the tools is removed from the magazine with the loader and moved by the loader into the primary transfer position, then the one tool is transferred position to the grab of the transfer arm. This arm is them pivoted to move the one tool in the grab from the primary transfer position into one of the secondary transfer positions, and then the tool at the one secondary transfer position is transferred from the grab to the respective holder.