Tool transfer apparatus including gripping force measuring unit for tool holding unit of tool magazine, and machining system

A machining system comprising:

• a machine tool including a tool accommodation apparatus having one or more tool holding unit;
• and
• a tool transfer apparatus which attaches and detaches a tool to and from the tool holding unit of the tool accommodation apparatus, wherein
• the machining system further comprises a communication unit which transmits and receives data between the tool transfer apparatus and the machine tool,
• the tool transfer apparatus includes a load measuring apparatus which measures a load applied to the tool transfer apparatus when the tool is attached to or detached from the tool holding unit, and
• the machine tool includes:
• a storage unit which stores a threshold of the load when the tool is attached or a threshold of the load when the tool is detached;
• and
• a notifying unit which makes a notification when the load measured by the load measuring apparatus of the tool transfer apparatus and transmitted to the machine tool by the communication unit falls below the threshold of the load when the tool is attached or the threshold of the load when the tool is detached, the notification indicating as such.

A tool transfer apparatus which attaches and detaches a tool to and from a tool holding unit of a tool accommodation apparatus included in a machine tool, the tool transfer apparatus comprising:

• a load measuring apparatus which measures a load applied to the tool transfer apparatus when the tool is attached to or detached from the tool holding unit;
• a storage unit which stores a threshold of the load when the tool is attached or a threshold of the load when the tool is detached;
• and
• a notifying unit which compares the load measured by the load measuring apparatus and the threshold of the load and makes a notification when the measured load value falls below the threshold, the notification indicating as such.