Abstract
A magnetic gripping tool comprising one tool-change interface, one magnet assembly and one separating element. After the workpiece has reached the set-down position, the workpiece is released by the separating element. The arrangement is a proposed configuration composed from a typed library of mechanism blocks derived from published patents; it has not been constructed.
1. Purpose and arrangement
[0001]This disclosure describes a magnetic gripping tool: one magnet assembly carried on a tool-change interface. It is arranged for separating a workpiece that stays on the face and exchanging the tool without rewiring the cell. One concrete embodiment is described; every connection is stated with the medium it carries, and the operating sequence is given as conditions on named operations.
2. Components, construction and connections
[0002]One tool-change interface. The tool-change interface splits the tool into a robot side and a tool side, so the tool can be exchanged without dismantling it. The tool-change interface has a mechanical lock.
[0003]One magnet assembly. The magnet assembly presents a pole face to the workpiece and holds a ferrous workpiece without any air circuit. The magnet assembly uses a permanent magnet.
[0004]One separating element. The separating element acts on the workpiece directly, so release does not depend on the holding mechanism alone.
[0005]The magnet assembly is carried on the tool side of the tool-change interface.
[0006]The separating element acts on the workpiece held at the magnet assembly and pushes it clear of the face.
[0007]The robot side of the tool-change interface is bolted to the robot flange.
[0008]The separating element is driven from the compressed air supply of the cell.
[0009]The separating element is switched by the cell controller.
3. Operating sequence and conditions
[0010]
- While the magnet assembly is in contact with the workpiece, the workpiece is held by the permanent magnet.
[0011]
- After the workpiece has reached the set-down position, the workpiece is released by the separating element.
[0012]
- The workpiece is held until the separating element has released the workpiece.
[0013]The cell controller commands the separating element; no sensor drives an actuator directly.
4. Parameters and operating assumptions
[0014]Parameter values of this embodiment: locking of the tool-change interface: mechanical (sets what has to be present at the interface for the tool to stay attached); magnet type of the magnet assembly: permanent magnet (sets whether the holding force can be switched off electrically or must be overcome mechanically); timing of the separating element: after set-down (sets when the separating element acts relative to set-down).
[0015]The permanent magnet cannot be switched off; the holding force is present whenever a ferrous workpiece is at the face, and release depends entirely on the separating element.
[0016]The lock is engaged by a manually operated lever on the interface; no supply crosses the interface for the lock, and tool exchange needs an operator at the tool.
5. Provenance and status
[0017]This document is an original combination composed from a typed library of mechanism blocks. Each block was derived from a published patent and carries typed connection points, the parameters its source states, and its own construction and operating description. The combination described here is proposed and has not been constructed. The published documents behind the blocks used in this arrangement are US-10259123-B2, US-11858125-B2, US-8043071-B2; their text is not reproduced, and the description above is generated from the structure of the combination.
6. Correction notice
[0018]This publication supersedes OT-2026-000005934, whose text described this arrangement with defects recorded in the quality register at https://opentechnical.org/qa/. The earlier publication is unchanged and remains public.