OpenTechnical
This publication supersedes OT-2026-000007427. The earlier publication remains publicly accessible and unchanged.

OT-2026-000011548

Permanent magnet gripper, stripped after set-down

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Classification
Robotics & AutomationEnd EffectorsMagnetic Grippers
Document SHA-256
242f0779f469f3932ee3f35fcf4d888b99ada452e05e09197ec296ab053f9e2d

Abstract

A magnetic gripping tool comprising one mounting flange, 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 mounting flange. It is arranged for separating a workpiece that stays on the face. 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 mounting flange. The mounting flange carries the whole assembly and presents the bolt pattern that meets the robot.

[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 mounting flange.

[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 mounting flange 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: 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.

5. Provenance and status

[0016]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-10549431-B2, US-8043071-B2; their text is not reproduced, and the description above is generated from the structure of the combination.

6. Correction notice

[0017]This publication supersedes OT-2026-000007427, 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. Changes made to reach a consistent configuration: separating element added for the permanent magnet; pump removed: a magnetic face carries no vacuum circuit.

Publication information

Citation

OpenTechnical Publication OT-2026-000011548, “Permanent magnet gripper, stripped after set-down,” published September 17, 2026 at 08:12:23 UTC, https://opentechnical.org/p/OT-2026-000011548.

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Published through OpenTechnical, which means it has been made publicly available here. It is not a statement that the design has been built, tested or independently validated. Content is available under the Creative Commons Attribution 4.0 International licence. See the publication policy.