Method for operating a machine tool by adapting a precompiled machine model

A method for operating a machine tool, comprising:

• accessing apps by a control unit of the machine tool via a data bus;
• transferring the apps from an external server device located outside the machine tool to a machine-specific Internet-of-Things (IoT) extension of the machine tool, wherein the external server device comprises a generic first data model of the machine tool without describing details of the machine tool and additionally receives engineering data that contains information specifically relating to the machine tool and knowledge of the machine tool;
• generating a user query regarding an operation of the machine tool to the external server device;
• translating and/or modifying by the external server device, by taking into account in the user query technical data, the generic first data model into a second data model that can be executed on the machine tool in dependence on the engineering data in response to the user query;
• transmitting the second data model from the external server device to the machine tool;
• and
• operating the machine tool in accordance with the second data model.

A machine tool system, comprising:

• an external server device comprising a computing unit configured to translate and/or modify a generic first data model into a second data model outside the machine tool, thereby unburdening the machine tool from translating and/or modifying the generic first data model during operation of the machine tool, wherein the external server device additionally receives engineering data that contains information specifically relating to the machine tool and knowledge of the machine tool;
• and
• a machine tool comprising a machine-specific Internet-of Things (IoT) extension, a first interface for communicating with the external server device, and a control unit configured to
• transmit via the first interface to the external server device the generic first data model that describes the machine tool without details of the machine tool
• to receive via the first interface the second data model which is executable on the machine tool, and
• to operate the machine tool in accordance with the second data model;
• and
• a data bus operatively coupling the control unit to apps, which can be transferred from the external server device to the machine-specific Internet-of Things (IoT) extension.