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| Rotary blood pump with ceramic members |
| OF THE ILLUSTRATIVE EMBODIMENT Referring to the drawing, an electromagnetically driven ventricular ... |
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| Magnetically driven rotor for blood pump |
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| Decanter centrifuge with a screw conveyor having a varying pitch |
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| Organ stabilizer |
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| Implantable self-inflating attenuation device |
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| Defibrillator electrode |
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| Implantation materials |
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Tool-changing system
| Details |
Inventors: Michael (Gö, ppingen, DE); bisch Gmü, nd, DE);
Assignee: Ex-Cell-O GmbH (Eislingen/Fils, DE)
Primary Examiner: Ashley; Boyer D.
Assistant Examiner: Ross; Dana
Attorney, Agent or Firm: Alston & Bird LLP
The invention discloses a tool-changing concept in which tools are accommodated in a rack and, by means of a storage and retrieval unit located behind the rack, are removed and fed through the rack to a tool changer, by means of which it is possible to remove a tool from a spindle of the machining center and to insert the tool fed by the storage and retrieval unit. |
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DETAILED DESCRIPTION In accordance with the invention, a method of changing tools in a machine tool and also a tool-changing system are provided by means of which the cycle times during tool changing are minimal.
In the method according to the invention, use is made of a tool-changing system in which the tools are accommodated in a tool magazine and are transferred to a tool changer by means of a storage and retrieval unit.
This tool changer can be moved, by the storage and retrieval unit, from a receiving position, for receiving the tool, into a transfer position, in which the tool changer penetrates into an operating space of the machine tool and can receive a tool accommodated in the spindle or can transfer to the spindle the tool previously received by the storage and retrieval unit.
That is to say, the tool changer used is formed such that it can receive a tool from the spindle and feed a replacement tool.
One advantage of the method according to the invention is thus that a replacement tool is applied in each case both by the storage and retrieval unit and by the tool changer, so that, for all practical purposes, a buffer store is formed by two tools and the cycle times are minimal.
Since virtually any desired number of tools can be accommodated in the magazine, it is possible for even extremely complex machining operations to be carried out fully automatically by way of a multiplicity of tool changes.
The tool magazine here is formed such that individual tools accommodated therein can be exchanged or changed around during the main machining time of the machine tool, this ensuring the greatest possible level of flexibility of the machine tool.
The operational reliability of the machine can be further improved if the wear of the tool and the tool type or other tool parameters that are pertinent for machining are sensed and, in dependence on these parameters, tools are removed from, or fed to, the rack by means of the storage and retrieval unit.
In the tool-changing system according to the invention, the tool magazine is preferably configured as a rack in which the tools are disposed one above the other and have their axis oriented parallel to the Z-axis
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