Tool-Spindle Clamping for Automated Workpiece Exchange
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Solution Overview
Problem
Existing clamping devices for workpieces in machine tools are complex and require manual operation for clamping and releasing, which complicates automated handling and processing of workpieces.
Innovation Solution
A clamping device with a base and an operating element that moves between a first and second position along a path around a height axis, allowing for automatic clamping and releasing of workpiece holders by the tool spindle of the machine tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual operation is used for clamping and releasing workpieces, then the clamping device can be simple in structure, but the automation level is reduced and handling becomes complex
Solution Approach 1:
The tool spindle is made multi-functional by enabling it to perform both tool holding and workpiece clamping operations. The spindle adapter can function as either a tool holder or a clamping element, allowing the tool spindle to automatically clamp and release workpieces without requiring separate dedicated clamping mechanisms, thereby achieving automation while maintaining structural simplicity
Solution Approach 2:
The clamping device utilizes the tool spindle's own movements and positioning to automatically perform clamping and releasing operations. The spindle adapter is designed to be automatically positioned and actuated by the tool spindle itself, eliminating the need for external manual operation or additional automated manipulating devices
2Extent of automation
If complex grippers or manipulators are used for workpiece handling, then automated handling is achieved, but the device complexity increases
Solution Approach 1:
The tool spindle is designed to serve multiple functions: holding tools, holding workpieces via the spindle adapter, and performing clamping operations. This multi-functionality eliminates the need for separate grippers or manipulators, achieving automated workpiece handling while avoiding the complexity associated with dedicated handling mechanisms
Solution Approach 2:
The spindle adapter acts as an intermediary component that enables the tool spindle to handle both tools and workpieces. It provides the interface between the tool spindle and workpiece holder, allowing automated handling through the existing spindle mechanism without requiring complex external grippers or manipulators
Data Source
AI summary
A clamping device and a method for handling a workpiece or a unit comprising a workpiece and a workpiece holder. An automatic workpiece exchange is enabled by using a tool spindle. For this a spindle adapter is present that can be releasably connected with the workpiece holder. By means of the spindle adapter, the unit comprising the workpiece and the workpiece holder can be transported. The clamping device can be switched between a release condition and a clamping condition by means of a movement of an operating element. This movement can be carried out by means of the tool spindle, in that the tool spindle engages the operating element directly or indirectly by means of the spindle adapter or an operating tool.